Sadra_business, Kish Island, Kish (2025)

15/05/2024

Purchasing Tips for Copper Ingots

When purchasing copper ingots, it's crucial to consider the following factors:
Source from a Reputable and Experienced Supplier: Ensure the authenticity of the copper ingots by procuring them from a trusted and experienced supplier. Here are some ways to identify counterfeit copper ingots:

Visual Inspection: Examine the color, weight, dimensions, markings, surface finish, and texture of the copper ingot.
Verify Quality through Physical and Chemical Analysis: Ensure the copper ingot's quality by checking its physical and chemical properties and obtaining a reliable Certificate of Analysis (COA). Common quality assessment methods for copper ingots include:
Electrolysis
Spectroscopic Analysis
Chemical Analysis
Atomic Analysis
Specify Ingot Type and Purity: Determine the type and purity level of the copper ingot based on its intended application and applicable standards. Copper ingot purity typically ranges from 99% to 99.99%. Higher purity copper ingots exhibit better formability, electrical and thermal conductivity, and corrosion resistance.

Consider Market Price: Factor in the current market price before purchasing copper ingots. Copper ingot prices fluctuate due to various factors, including supply and demand, currency exchange rates, transportation costs, and trade sanctions.

By adhering to these guidelines, you can make informed decisions when purchasing copper ingots and ensure the quality and authenticity of your procurement.

28/04/2024

Calculation of the required amount of alloys for steelmaking
The calculation of the required amount of alloys for steelmaking involves considering the desired chemical composition (or target) of the final steel product, the composition of the base materials (DRI and steel scrap), and the properties of the alloys used.

Here is a general method for calculating the required amount of alloys:

1. Determine the target analysis:
Identify the desired chemical composition of the steel, including the desired percentage of alloying elements (such as manganese, silicon, chromium, etc.) provided by the alloy.
To determine acceptable ranges for each element, carry out necessary investigations based on steelmaking standards or customer specifications.

2. Analyze raw materials:
Analyze the chemical composition of DRI (Direct Reduced Iron) and steel scrap used as raw materials.
Identify the current amount of alloying elements present in the raw materials.

3. Find alloy specifications:
Refer to the specifications provided by the alloy supplier for the specific alloy composition used.

4. Calculate the required amount of alloy:
Calculate the weight of alloy required for each element based on the deficiency or excess calculated in step 2.
Divide the required weight of each alloying element by the relevant composition percentage in the alloy to determine the total weight of alloy required for that element.
Consider the recovery rate or yield of the alloy during the alloying process. Typically, a certain percentage is lost during melting and refining stages, so adjust the calculated weight accordingly.

5. Consider productivity factors
Consider any additional factors that may affect the efficiency or effectiveness of the alloy in achieving the desired composition.
For example, consider the burning or evaporation of volatile elements during the steelmaking process and adjust the calculated weight of the alloy accordingly. For instance, the amount of oxygen in the melt affects the absorption coefficient or efficiency of the alloy directly.

13/04/2024

Points to Consider in the Maintenance and Storage of Rebars.
The production and storage process of rebars are among the most crucial aspects required for a needed product, which must be meticulously and systematically carried out; otherwise, significant losses will be incurred by the organization. Considering that this product has a round and bar-shaped cross-section, it is necessary to follow and execute processes for its construction and production in order to utilize the final product in structures.
It should be noted that these tasks must adhere to a standard and uniform method so that the product can demonstrate the necessary resistance.
Points to Consider in the Maintenance and Storage of Rebars
The most important point to consider is that the type of materials used in the production of this product may cause it to react to chemicals and easily lose its quality. Therefore, it is necessary to prevent these products from chemical materials and reactive substances.
Another important point is to avoid direct sunlight and exposure to UV rays. Since the structure of metal materials makes them susceptible to softening and damage due to heat, it is necessary to devise a solution to counteract this issue.
Iron and metal products react very quickly to moisture and deteriorate. This phenomenon is so common that if it occurs, the rebar not only rusts but also loses its strength.
Therefore, proper attention must be paid to the maintenance of steel components; otherwise, they may deteriorate, resulting in significant financial losses to the organization, which can sometimes be irreparable.

20/03/2024

Happy Nowruz

27/01/2024

White Cement: Uses, Advantages, and Disadvantages

White cement is one of the most common types of cement, mainly used for cladding buildings due to its distinctive color. The production process of white cement differs from regular cement. In the initial stage, high-quality clinker is prepared, followed by reducing the iron and magnesium content to below eight percent. This is done to alter the color of the cement and give it a white hue. Clinker is obtained from cement kilns, and white cement clinker comes in different colors compared to regular cement.

*Key Uses of White Cement*
- Cladding of buildings
- Production of concrete
- Application as a sealer between tiles and ceramics

*Advantages:*
White cement offers cost-effective cladding, resistance to water, thermal insulation, substitutability for lime and white paint, compatibility with various colors, non-crumbling during use, creating a consistent appearance, and the ability to blend with other colors in environmental decoration.

*Disadvantages:*
Drawbacks include a higher price, increased weight, susceptibility to dust absorption, relatively lower resistance, limitations in usage scenarios, low tensile strength, and restricted application in concrete structures.

White cement is commonly used in cladding and specific construction projects, either independently or as part of building materials such as blocks and bricks. The decision to use it alone depends on the nature of the project.

01/01/2024

Happy New Year! We are delighted to have collaborated with you in 2023 and look forward to creating more business relationships with you in 2024. Here's to a year filled with peace, tranquility, and shining successes.

13/12/2023

Base oil is a fundamental component in improving the performance of engines. In the motor oil of modern passenger vehicles, the base oil constitutes 75 to 80 percent of the final product. Additional additives make up another 10 to 20 percent. An improver of viscosity index, which is used to reduce viscosity decline at high temperatures, accounts for an additional 5 to 10 percent, while various inhibitors make up less than 1 percent.
Base oil is produced through the refining of crude oil. A 42-gallon barrel of crude oil can actually yield approximately 45 gallons of refined petroleum products, but only about 4.4 gallons or less than 1 percent of it is used for producing lubricants. The majority is allocated to gasoline, diesel fuel, and jet fuel of the white oil type.
Base oils are classified by the American Petroleum Institute into five groups labeled I-V based on the processing methods of the oils.

07/12/2023

Concrete Blocks
To construct concrete blocks, a mixture of cement, water, fine aggregate (sand), and coarse aggregate (gravel or other suitable stones) is blended. After vibrating and compacting the mixture, it is placed in the designated area.
Concrete blocks are used in both external and internal walls as load-bearing and non-load-bearing elements in panels, ceilings, and other parts of the building.
Advantages of Concrete Blocks:
* Cost Reduction in Material Consumption
* Time Efficiency in Ex*****on
* Easy Transportation
* Relative Resistance to Heat and Sound Transfer, and Ease of Use

26/11/2023

Comparison of Urea Prill and Granule Fertilizers
Urea prill and granule fertilizers are two types of nitrogen fertilizers widely used to increase crop yield and improve the quality of agricultural products. These two types of fertilizers have differences in terms of appearance, production process, properties, and applications. Below, we will examine the differences between urea prill and granule fertilizers.

Appearance:
The main difference between these two types of fertilizers lies in their form and appearance. Urea prill is a type of nitrogen fertilizer produced in powder form. In other words, urea prill consists of small and fine granules that easily dissolve in water. On the other hand, urea granule fertilizer is produced in larger granules and is used for soils with heavy and sandy textures.

Production Process:
Urea prill is obtained through the urea process from natural gas. In this process, natural gas reacts with steam and air to produce urea, which then comes in the form of fine powder particles. However, urea granule fertilizer is a type of nitrogen fertilizer produced in the form of large granules. This fertilizer is obtained through a modified urea process, where urea is modified using substances such as ammonium sulfate or potassium sulfate, resulting in large and granular particles.

Properties:
Urea prill has advantages such as easy solubility in water, the ability to accumulate in the soil, and rapid absorption by plants. On the other hand, urea granule fertilizer has other advantages, including slow release of nitrogen in the soil, reduced risk of soil waterlogging, and decreased environmental pollution.

Applications:
There is also a noticeable difference in the applications of urea prill and granule fertilizers. Both types of fertilizers have their specific uses, and depending on the needs of the agricultural population and soil and environmental conditions, they can be utilized accordingly. Urea prill, as a simple and effective nitrogen source, is commonly used in gardens and greenhouses. However, due to its physical resistance to moisture and rainfall, urea granule fertilizer is more suitable for tougher weather conditions in general.

18/11/2023

What is Silico manganese?
🔍 Silico manganese is one of the key components in the production of steel and metal products. This metal adds high resistance and anti-oxidation properties to the steel-making materials, resulting in high-quality and high-strength products. 🔧🏗

Silico manganese Supply and Export with Sadra:
🛢️ Sadra International Holding proudly serves as the leading supplier of silicomanganese in Iran. By offering high-quality products and utilizing cutting-edge technology, we are at the forefront of the steel and metal products industry.

Collaboration with Sadra:
If you are looking for quality assurance, commitment to delivery timelines, and collaboration with a reliable supplier, join Sadra International Holding. We are always at your service.

01/11/2023

Congratulations on the 7th anniversary of the establishment of Sadra International Holding

12/10/2023

Supply of export bitumen
Bitumen has many uses in industry and construction, this material is responsible for insulating, sealing and insulating various materials in countless industries. Apart from that, bitumen is widely used in road construction as a strong adhesive, it not only reduces the cost of road construction but also helps in its durability and strength for a long time.

Sadra International Holding is one of the suppliers of export bitumen in Iran, which sends to all different parts of the country, and in addition to the neighboring countries, it exports all kinds of mineral, natural bitumen, etc.

Based on the source, bitumen has different grades and is divided into two categories, natural or refined, which have different characteristics and properties. This leads to the classification of bitumen into different grades with different uses.

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