Chongqing Juyuan Stainless steel Products Co.,Ltd

09/08/2019

As we all know, the stainless steel water pipes known in the market are connected in various ways. Commonly, there are clamp type, flexible type, clamp type, live type fl**ge connection, socket welding type, welding type and welding and traditional connection. A combination of derived series connection methods, etc. But what everyone doesn't know is that stainless steel pipes have emerged in the past few years. The following sources are for you to introduce two new types of connections, press fitting and grooved fitting.

07/08/2019

The difference of stainless steel pipe and copper tube
A few days ago, the Ministry of Housing and Urban-Rural Development of the People's Republic of China and the State Administration of Market Supervision implemented the joint release of the National Standard for Green Buildings (GB/T 50378-2019) on August 1, 2019. Copper or stainless steel pipes are required for the indoor water supply system. Then what is the difference between stainless steel pipe and copper pipe? Chongqing Juyuan will introduce for you one by one.

First, health performance
The sanitary performance of the stainless steel tube is superior, and the problem of “red water, blue-green water, and hidden water” is eliminated. No odor, no scaling, no harmful substances are precipitated, and the water quality is pure and harmless to the human body.
Copper pipes have excessive copper problems, blue-green water problems caused by corrosion, and corrosive bitterness and odor generated, as well as fouling.

Second, the service life
Stainless steel has an aging life of more than 80 years and does not require replacement, while copper tubes can only be used for up to 50 years.

Third, the compressive strength
The compressive strength of the stainless steel pipe is more than 520 MPa, and the degree of compression of the copper pipe is less than 40% of the strength of the stainless steel pipe, which is more likely to leak due to external force.

Fourth, insulation performance
The thermal conductivity of the stainless steel tube is 1/23 of the copper tube. The stainless steel tube has good thermal insulation performance, and is especially suitable for hot water transportation. The copper tube needs a professional insulation layer, otherwise the heat energy is wasted too much.

Fifth, corrosion resistance
The stainless steel tube can be passivated with the oxidant to form a protective film on the surface to effectively prevent oxidation. The copper tube has a low passivation ability. The copper tube has poor corrosion resistance, and the water flow is large and corrosive, and the aging life and harmful When the material is precipitated, the copper tube weld can’t be solid solution, pickled, and passivated on the construction site, and it is difficult to prevent the corrosion of the internal weld of the pipeline, so the weld is easily corroded and easily deteriorated.

Sixth, economic performance
Compared with copper pipes, the price of stainless steel pipes is lower than that of copper pipes. To this extent, stainless steel pipes are almost zero maintenance once used, and the service life is consistent with the service life of the building. The replacement of copper pipes, the overall cost will be 2-4 times than stainless steel pipes.

Therefore, in summary, stainless steel water pipes have been widely used in hotels, hospitals, industrial buildings, residential buildings and national government projects because of their safety, reliability, energy saving and environmental performance. Therefore, stainless steel water pipes are the real green piping in the 21st century.

05/08/2019

The application of thin wall stainless steel pipe
Thin wall stainless steel pipes have been well known in the public in recent years because of the consumer's recognition of food safety, environmental sanitation, and sustainable development.

PPR water pipes are commonly used in the market. In 2002, PPR plastic pipes began to promote tap water pipes in Chinese households because PPR raw materials are cheap, easy to installation, and the profits are considerable. In foreign countries, PPR plastic pipes are only used for industrial water transportation or general purpose water transportation, and are never allowed to be used in households.

Moreover, due to the pursuit of interests by some unscrupulous manufacturers, the PPR tube has actually adopted foreign waste recycling materials! Moreover, due to the limitation of materials, it is easy to hide dirt in the wall of the PPR tube, and it is imperative to replace it with a new type of material.

304 stainless steel, widely used in medical, food processing, etc., hospital scalpels, surgical forceps, needles, and some implanted human body brackets are all made of 304 stainless steel, and the daily use of the tableware, 304 material is more popular welcome.

304 thin wall stainless steel water pipes is the first choice for healthy living. 304 thin wall stainless steel water pipes use one-time processing of 20-40 sheets of outer diameter and wall thickness, which is easy to install and cost-effective.

Therefore, the application range of thin wall stainless steel pipes is gradually expanded: gas, food transportation, heating, cooling water, fire protection, decoration, etc.

02/08/2019

Advantages and characteristics of stainless steel press pipe fittings

Stainless steel press pipe fittings are suitable for using in different environments, have corrosion and anti-aging effects, used for ling, and are very high-end and efficient.

The stainless steel press pipe fittings have been successfully developed after the pressing type. It adopts the principle of high-tech machining, and adopts the principle of sealing of metal materials and the compression ratio of rigid elasticity, and is made by a special process. Unique materials The advanced scientific technology of production technology makes its performance more suitable for this market with such changes and competition.

In fact, the press pipe fittings have several advantages.

First, it has superior resistance to extrusion. It is three times more resistant to normal pipe fittings and is suitable for high-intensity work, such as water facilities for high-rise buildings.

Secondly, its material is made of high-quality stainless steel. It is cut with precision instruments, which makes it very high in dimensional accuracy and increases its adaptability. It is combined with other pipes and don’t damage the o-ring when insert the piping.

Third, the press apron is sealed inside the pipe and protects the rubber ring, greatly increasing its service life. It is also not possible to squeeze the seal from the side of the pipe because the water pressure is too high. Completely make up for the shortcomings of single card pressure and become a good substitute.

Fourth, even at the joint of the pipe, the extrusion causes the pipe to bend and deform, and does not break the seal. It is very safety and reliable.

304 stainless steel pipe fittings produced by Chongqing Juyuan Stainless Steel Products Co., Ltd. is your ideal choice!

31/07/2019

Stainless steel pipe fittings heat treatment's role

Stainless steel pipe’s molecular structure, magnetic properties and physical properties of the metal have changed after processed by molding, welding, etc. The atmosphere-protecting solution treatment process can restore the corrosion resistance that is affected after processing, and at the same time obtain the hardness required for the stainless steel to ensure the optimum performance of the stainless steel. The stainless steel pipe fittings after solution treatment have a good improvement effect:

1. Eliminate the modification phenomenon of stainless steel pipe fittings during processing, reduce the hardness of stainless steel to below 220HV, improve the plasticity and toughness of stainless steel, and make the pipe fittings more convenient and safe in installation.

2. Restoring stress and intergranular changes in the production process of stainless steel pipe fittings, reducing intergranular corrosion and stress corrosion of stainless steel, and enhancing corrosion resistance.

3. Remove stainless steel due to the magnetic properties generated during processing, and stabilize the austenite structure.

4. Restore the natural light on the surface of stainless steel material (natural light is different from polished light)
The stainless steel tube is heated to a certain temperature and held for a while, then allowed to slowly cool and anneal. Annealing of steel is a heat treatment method in which steel is heated to a temperature at which a phase change or a partial phase change occurs, and is slowly cooled after being kept warm.
The corrosion resistance of rust steel decreases with the increase of carbon content. Most stainless steels have low carbon content, the maximum is less than 1.2%, and some steels have Wc even lower than 0.03%. The main alloying element in stainless steel is Cr, and steel has corrosion resistance only when the Cr content reaches a certain value. Stainless steel generally has a Cr content of at least 10.5%. Stainless steel also contains elements such as Ni, Ti, Mn, Si, and Cu.

The surface is beautiful and the possibility of use is diversified. The corrosion resistance is good. It is longer than ordinary steel. It has high corrosion resistance and high strength. Therefore, the thin plate is highly resistant to high temperature oxidation and high strength. Therefore, it can resist fire at room temperature, that is, it is easy to plasticize. Because it does not require surface treatment, the maintenance is simple and clean, and the finish is high and the welding performance is good.
Chongqing Juyuan stainless steel pipe is your best choice!

29/07/2019

29/07/2019

29/07/2019

Will thin wall stainless steel pipes freeze?
Many users think of this problem when selecting a water pipe. Everyone should know that no matter which kind of water pipe is placed outdoors, it will freeze, especially in colder areas. The stability and cold resistance of thin-walled stainless steel pipes are absolutely guaranteed compared to PPR pipes that are prone to cracking in cold temperatures. Water pipe freezing is caused by the principle of thermal expansion and contraction. In the low temperature environment in winter, once the temperature is below zero, the water pipe is easy to freeze.

I. Temperature is the inevitable factor that causes the water pipe to freeze, but there are more than one condition for icing. If the water in the pipeline is in circulation, it is not easy to cause icing, and the water in the quiescent state is likely to cause the water pipe to freeze.
2. The temperature of the water pipe icing is not based on the temperature of tens of degrees in winter. Many people will confuse the two concepts.
When the pipeline is laid, the buried stainless steel water pipe accounts for the vast majority of the pipeline system. The combination of low temperature and temperature affects the underground temperature. When the temperature is below tens of degrees, the ground is only frozen to a depth below. The pipe at the place.
3. The freezing of the pipeline is related to the thermal expansion and contraction and the quality, performance and stability of the pipeline.
In order to greatly reduce the freezing chance of stainless steel pipes, overcome the damage caused by cold environment and physical reasons, and extend the service life of stainless steel pipes. It is recommended that users use high-quality water pipes with product guarantee when purchasing stainless steel water pipes, such as professional giant stainless steel pipes such as Yuanjuyuan stainless steel water pipes.

1. How to do the antifreeze and warmth of water equipment in winter?
The antifreeze of indoor and outdoor water meters, water pipes and faucets can be wrapped with cotton, h**p fabric or warm material.
2. How to do the antifreeze and warmth of the secondary water supply equipment?
Do anti-freeze wrapping of outdoor pipelines: including exposed pipes of pump houses and roof tanks, pipes and valves laid on the roof; pipes and valves in buildings;
If the window is hollow, the bottom floor is only equipped with a hollow security door. If the wind is poor in the corridor, it should be properly thickened to keep warm. Flexible rubber or rock wool products can be used as the thermal insulation material;
For the area where the water meter has been moved out, please do the anti-freeze bandage of the water meter and the surrounding pipeline.
3. The temperature is as low as minus 3 ° C, small measures to prevent freezing
In the cold season, please go before going to sleep: close the corridor and interior doors and windows, keep room temperature;
Close the indoor small water meter valve; open the faucet and drain the remaining water from the water pipe.
4. What should I do if the water meter and water pipe are frozen?
Wrap the faucet with a warm towel, then pour warm water to thaw the faucet;
Unscrew the faucet and slowly pour the water pipe along the faucet with warm water to thaw the water pipe;
If there is no water flowing out to the water meter, the water meter will be frozen, and then wrapped in a hot towel on the water meter. Sprinkle with warm water (not higher than 30 °C) to thaw the water meter. Do not use fire to bake;
The blower can also be used to blow the water meter and the surrounding pipes back and forth.
YUANJUYUAN stainless steel water pipe, the pipeline expert around you.

26/07/2019

How to choose the thickness of stainless steel water pipe?
When buying stainless steel water pipes, many customers think that the wall thickness of the water pipe can determine the quality of the pipe. The thicker the pipe wall, the higher the quality of the stainless steel water pipe. Do you agree?
In fact, this idea is a misunderstanding. For example, the wall of a stainless steel water pipe is generally not thick. The user judges that the quality of the stainless steel water pipe cannot be judged by the senses alone. Deepening the understanding of stainless steel pipes is a good way to distinguish between good and bad pipes.
The thicker the better for stainless steel water pipe?
The quality of home-made stainless steel pipes depends on their temperature resistance and pressure resistance, while the temperature resistance and pressure resistance of stainless steel pipes depend on the thickness of the pipe wall, temperature, pressure and purity of raw materials. The thickness of the pipe wall and the purity of the raw materials are two important factors.
The wall of the stainless steel water pipe should not be too thick, but should be as thin as possible under the guarantee of performance. Because the thicker of the pipe, the smaller the runoff, the thin stainless steel water pipe is generally used for the home-made stainless steel water pipe. When selecting a home-made stainless steel water pipe, the pipe size is determined based on the temperature and pressure of the pipe network system.
Stainless steel water pipes have strict requirements on the thickness of the pipe wall and the uniformity of the wall thickness. If there is no advanced production control machine in the production chain of the pipe, or the technology is not mature enough, it is difficult to ensure the uniform thickness of the pipe wall. This is especially important for hot water piping systems.
Why choose thin-walled stainless steel water pipes?
The quality of domestic water pipes is directly related to the health of domestic water.
Water pipes affect water quality. Commonly used ordinary water pipes are metal pipes and plastic pipes. Many users often hesitate between the two. Compared with the metal galvanized pipe used in the past, the ppr water pipe does not rust, withstand pressure and corrosion resistance. However, when it encounters high temperature water of more than 70 degrees, it will cause deformation, odor and other problems, affecting daily water consumption, and causing harm to the body.
Compared with galvanized pipes, stainless steel pipes have the characteristics of no rust and corrosion resistance, and can work normally in high temperature water environment that stainless steel can’t withstand. It is an ideal home water pipe with high temperature resistance, non-toxicity and long service life. The stainless steel water pipe is the true green pipe.

24/07/2019

Chongqing Juyuan, a stainless steel water pipe quality manufacturer, won the military industry Qualifications

On June 27, 2019, Chongqing Juyuan Stainless Steel Co., Ltd. was awarded the "Weapons and Equipment Quality Management System Certification" issued by Beijing Junyou Integrity Quality Certification Co., Ltd., and became one of the few enterprises in the stainless steel industry that passed the national military standard quality management system certification. . The quality management system meets the requirements of GJB 9001C-2017 and is suitable for the design, development, production and service of thin-walled stainless steel fluid pipes and fittings.

The GJB 9001C "Military Product Quality Management System" standard is the national military standard issued by the General Armament Department of the People's Liberation Army. The standard adopts the A+B model—that is, based on the civilian product ISO 9001 quality system, which increases the special requirements for military quality management and forms a standardized management system with military quality characteristics. Adhering to the company philosophy of “Quality, Efficiency, Responsibility and Benefit”, Chongqing Juyuan successfully completed the establishment of the national military standard system and the trial operation of the three-month system through the concerted efforts of all employees, and obtained the quality management of weapons and equipment through the audit of the certification body. System Certification. With this certification, our quality management system has been further improved and systematically improved, and has met the standards and related requirements for weapons and equipment quality management system.

Chongqing Juyuan now has more than 100 advanced stainless steel decorative pipe production lines and more than 150 sets of sanitary stainless steel drinking water pipes and gas pipe fittings production lines. On the basis of advanced equipment and first-class management, in order to become bigger and stronger in the stainless steel industry, we have set up a research and development team with professional technicians such as Ph.D. and Master of New Materials, and with Chongqing University, Northeastern University, and China Metals. The Materials Flow Association Stainless Steel Branch, Chongqing New Materials Industry Association and other research institutes form an industry-university-research alliance. The R&D team has more than 20 people, R&D equipment has invested more than 50 million yuan, and the R&D base (R&D building and product workshop) covers an area of about 5,000 square meters. It mainly develops cutting-edge products such as ultra-pure ferritic stainless steel, antibacterial stainless steel and medical stainless steel.

The adoption of the national military standard quality management system certification is a major progress made by our company in the construction of the salary quality of the military. It indicates that Chongqing Juyuan has the ability to develop, produce and service military products, which is conducive to promoting our military to expand the military market in the field of stainless steel. Improve the company's comprehensive competitiveness. In the future, Chongqing Juyuan will continue to improve its quality management level, inject higher quality and deeper connotation into the “Source Juyuan” brand, insist on providing customers with quality products, share results with customers, and continue to grow together with customers.

22/07/2019

Stainless steel water pipe, YUANJUYUAN leads the trend of health
Regardless of which country's water pipes are selected, the main principles are: high water quality, low maintenance, and long life.
Is the water pipe material really so important?

The water pipe, because it is concealed below the surface layer, if the pipeline has low pressure resistance and the pipe joint is not reliable, maintenance and replacement are troublesome. If the pipe is prone to bacteria and is easy to pe*****te, it will be seriously harmful to the human body. It is better to destroy the integrity of the decoration in the tinkering, or to use materials that are not healthy and environmentally friendly in the near future. It is better to have a sense of advancement, choose stainless steel water pipes, and invest once and benefit for a long time.

Stainless steel pipe has gradually become the darling of the decoration industry. From the aspects of quality, price and word of mouth, it has the advantages of non-toxic, hygienic, environmentally friendly, pressure-resistant, corrosion-resistant and comprehensive cost-effective.
Advantages of thin-walled stainless steel water pipes
As shown in Figure 1, hygiene: long-term use does not scale, to prevent the water from being completely stained by secondary pollution, fully meet the sanitary standards of drinking water.
Stainless steel is a healthy material that can be implanted into the human body, so the choice of stainless steel tubing is the most beneficial for the water supply pipe. The soaking water test, all the indicators are in line with the national requirements for drinking water standards. The inner wall of the stainless steel pipe is smooth, it will not be fouled for a long time, and it is not easy to be stained by bacteria. It is not necessary to worry about the water quality being affected, and it can prevent the secondary pollution of water.
2, anti-corrosion: the whole tube is solution treated, the surface is acid-washed and passivated, and it is durable.
The thin and dense chromium-rich oxide film on the stainless steel surface makes the stainless steel water pipe have good corrosion resistance in all water quality including soft water, and has excellent corrosion resistance even when buried. The field corrosion test data indicates that the stainless steel water pipe It has a service life of up to 100 years and requires almost no maintenance during the life cycle, avoiding the cost and trouble of piping replacement.

3, high strength: the comprehensive strength is twice that of galvanized steel, which is three times that of copper tubes.
Stainless steel can work safely for a long time at temperatures from -270 ° C to 400 ° C. No matter whether it is high temperature or low temperature, no harmful substances are precipitated, the material properties are quite stable, and it has good ductility and toughness. The high strength of the stainless steel water pipe greatly reduces the possibility of water leakage caused by external forces, significantly reduces the water leakage rate, and enables the water resources to be effectively protected and utilized.
As shown in Fig. 4, energy saving: low thermal conductivity is 1/25 of that of copper pipe, which is 1/4 of carbon steel pipe, which greatly reduces heat energy loss during hot water transportation.
The inner wall of the stainless steel pipe is smooth and the water resistance is very small, which reduces the pressure loss and reduces the transportation cost. Due to the low coefficient of thermal expansion of stainless steel, thermal energy loss is effectively reduced in hot water pipes.
5, environmental protection and longevity: the construction site has no pollutants, does not pollute the environment, the service life of more than 70 years, and the life of the building, "lifetime" exemption.

Stainless steel is 100% recyclable and does not cause environmental hazards. Since humans invented stainless steel in the 20th century, stainless steel is now a common material. At present, among the performance and price ratio of various material water pipes, the highest quality is stainless steel water pipes, which is related to the superior performance of stainless steel materials such as corrosion resistance, high strength and strong impact resistance. Its service life can be said to be the same as the life of the building. One investment, a lifetime benefit, can be described as "one time and for all."

6, a wide range of uses: can be used for municipal water supply pipe network, direct drinking water, hot water transportation and medium and high-grade building water supply, heating water pipes, steam pipes and outdoor pipelines in severe cold areas, urban fire water supply, pump rooms and other occasions . The beautiful appearance can be used for clear or dark, and can also be used underground;

19/07/2019

What are the characteristics of stainless steel pipes and fittings?

Pipe fittings are basically used for piping and tubing systems to connect the joints and help in the direction of the flow that conveys liquid, gas, and occasionally solid materials. The Stainless steel pipes & fittings are strong and durable metal which is manufactured as an alloy of chromium and steel. There are various Characteristics of SS pipes & fittings such as:
•Corrosion resistant
•Highly Durable
•Lightweight
•Low maintenance
•Long lasting materialHealth and Environmental Protection DurableExcellent insulationEasy to use
These features of stainless steel pipe fittings make highly effective and accessible in various applications for automotive, commercial and domestic use. The stainless steel pipe fittings manufacturers make them available in different sizes and types depending upon the preferences.
Chongqing Juyuan Stainless Steel Products Co.,Ltd is specialized in sanitary stainless steel water pipe and fitting.
We have 4 kinds of stainless steel fitting:
compression and adhesive fitting
press connection fitting
annular compression and adhesive connection fitting
grooved fitting fitting

17/07/2019

The stainless steel pipe welding way of ERW and EFW
ERW is electric resistance welding
The welding method of ERW tube and submerged arc welded pipe is significantly different. The pressure welding method without filler metal is adopted. The weld is not filled with other components. The skin effect and the proximity effect of high frequency current are used to instantly heat the edge of the plate. At the soldering temperature, the weld of the forged structure is extruded by a squeeze roll. High-quality steel pipes require heat treatment on the weld line or off-line to refine the microstructure of the weld zone. The weld of the high-quality ERW welded pipe can reach the same level of toughness as the base metal, which cannot be achieved by the submerged arc welding process.
EFW is electric fusion welding
One of submerged arc welding (SAW)-electric welding (EFW) is a process in which metal is heated by one or several consumable electrodes and a workpiece to heat the metal, and the arc is used to make the metal and fill. The material is fully melted and does not require pressurization. The part of the filling metal is all from the electrode.

Chongqing Juyuan stainless steel pipe, all are use ERW welding way! we have 116 products line for stainless steel decorative pipe and 150 product line for stainless steel water pipe.

15/07/2019

The difference between 304 and 316 stainless steel pipe
They are very much similar in appearance. SS304 % SS316 both are austenitic, non-magnetic and non-hardenable by heat treatment.
1. Different chemical composition
SS304 —→ Chromium - 18%, Nickel 8%
SS316 —→ Chromium - 16%, Nickel 10% and Molybdenum 2%
2. Different performance
Added Molybdenum in SS316 helps in corrosion resistance to chlorides such as sea water.
SS304 is generally cheaper and mostly used for kitchen utensil and pots, storage tanks.
SS316 due to its high corrosion resistance it is used in refinery equipment, pharmaceutical equipment, fasteners, bolts etc.
3. Different maintenance methods
304 stainless steel: 18cr-8ni-0.08c good corrosion resistance, oxidation resistance and processability, resistant to strong oxygen acid, can be stamped, can be used to make containers, tableware, metal furniture, building decoration, and medical equipment. 316 stainless steel : 18cr-12ni-2.5Mo is more common in seaside construction, shipbuilding, nuclear electrochemistry and food equipment. It not only improves the corrosion resistance of chemical hydrochloric acid and the ocean, but also improves the corrosion resistance of brine halogen solution.

12/07/2019

Why stainless steel water pipe make PE coated?
Many family who do not have 304/316 stainless steel water pipes or have installed stainless steel water pipes ,but never understood that since they are food grade stainless steel water pipes, why the stainless steel pipe covered with a layer of PE plastic?
1, surface mounted
2, buried
The stainless steel pipe we usually see in engineering is a stainless steel bare pipe of primary color. What is this?
The YUANJUYUAN stainless steel water pipe has both primary and bare stainless steel water pipes. The primary color bare pipes are generally used in engineering installation (external installation), while the plastic coated stainless steel pipes are mainly used in household concealed installations (dark buried waterways).

Plastic coated stainless steel pipe: A thin-walled stainless steel water pipe with a plastic cladding layer on the outer wall. The outer plastic sleeve serves to protect the outer wall of the stainless steel because it is a closed environment in the wall, has a certain humidity, and has a weak current. It may cause corrosion to the outer wall of the stainless steel for a long time. ), so the stainless steel pipes that are generally buried in the wall are to be protected by the outer layer.
3. Stainless steel water pipes, the reasons are:
We know that the hot water supply must be transported by the heating equipment to the place of use through the pipeline. Most of the traditional pipelines have no heat preservation equipment. If the construction site is insulated at the construction site, the construction will be very troublesome. The thin-walled stainless steel coated pipe insulation pipe is made of high-quality stainless steel pipe as the base material, and the stainless steel pipe covered by the integrally formed PE plastic is covered. The outermost layer of this pipe is a protective layer with a stainless steel tube inside. Because the insulation layer is integrated with the stainless steel pipe, the process is excellent, the appearance is beautiful, the pipe trench is shallow, and the construction is very convenient, which is very suitable for the hot water pipe and the heat preservation pipe.
Plastic coated stainless steel pipes are widely used in cold water, hot water, insulation pipes for cold and warm rooms, piping for refrigeration and air conditioning, drainage, ventilation piping, and medical piping.
4､Chongqing Juyuan stainless steel water pipe: Healthy water pipes. To be with a temperature stainless steel water pipes .