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30/04/2024

FEATURE|Comparison of Common Mold Steel Grades in China and Other Countries

Mold steel is a type of steel used to make molds, such as cold stamping dies, hot forging dies, and die-casting dies. Molds are the main processing tools for manufacturing parts in industrial sectors such as machinery manufacturing, radio instruments, motors, and electrical appliances. Since the production standards of various countries are different, this has caused certain difficulties for customers in international trade. CSMC will organize and display the Chinese grades and other countries' grades to help customers conduct trade more smoothly.

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29/03/2024

FEATURE|The Brief Summary of Common Container Knowledge

Container refers to a large loading container with a certain strength, stiffness, and specifications specially designed for turnover use. The characteristics of containers are that they have a uniform format and can be stacked layer by layer. Therefore, they can be placed in large numbers on ocean-going ships. It can provide manufacturers around the world with high-volume shipping services that are cheaper than air freight.

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01/03/2024

FEATURE|The Shipping Company Indispensable in International Trade

In short, shipping companies help facilitate the smooth flow of international trade by providing comprehensive cargo transportation services. They play a key role in global supply chains, facilitating the flow of cross-border goods and supporting the globalized economy.

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29/01/2024

FEATURE|Common Stainless Steel Types References

Common stainless steel classifications include martensitic steel, ferritic steel, austenitic steel, duplex stainless steel, etc. There are many different stainless steel models under each classification. This article lists the model names of various stainless steel materials.

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29/12/2023

FEATURE| Common Stainless Steel Surface Processing (Treatment) Technologies

The stainless steel surface treatment process plays an important role in the manufacturing of stainless steel products, and it has a significant impact on the appearance, corrosion resistance, mechanical properties, and service life of the product.

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30/11/2023

FEATURE| Common Metal Surface Processing Technologies

In this article, CSMC will focus on seven surface treatment technologies. At the same time, CSMC will use pictures and text to illustrate these seven surface treatment processes. We hope this will be helpful to our customers.

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27/10/2023

FEATURE|Coating Color Reference for Prepainted Steel Plates--RAL Color Card

In this article, CSMC marks the colors of pre-painted steel plates commonly used in the steel trade according to the different coating materials on the surface of the pre-coated steel plates, hoping to help to customers.

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Short News

22/12 16:54

< On December 22, the price of carbon steel round bars in Guangzhou rose slightly. 45# (ASTM 1045) Shaogang Φ131-170 (hot rolling) 523.98, up 1.42. (USD/ton)

22/12 16:52

< On December 22, the price of cold heading steel in Jiaxing did not increase significantly. 35K (SWRCH35K) Zhongtian Φ6.5-24 (hot rolling) 501.26, up 1.42. (USD/ton)
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22/12 16:51

< On December 22, the price of medium-thick stainless steel plate in Wuxi saw a slight decrease. 316L/NO.1 TISCO 25.0*1500*6000 (slit edge) 3748.80, down 28.40. (USD/ton)
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22/12 16:49

< On December 22, the price of stainless steel angle in Wenzhou remained stable. 316L Qingshan 60*60*5mm, 3408.00. (USD/ton)

22/12 16:48

< On December 22, the price of stainless steel strip coil in Foshan remained stable. 304/NO.1 Shangtai 3.0*603-620 (hot rolled, slit edge) 1718.20. (USD/ton)

22/12 16:46

< On December 22, the price of duplex stainless steel coil in Wuxi remained stable. 2205/NO.1 (S32205/NO.1) Dingxin 8.0*1520*C (mill edge, hot rolled) 3606.80. (USD/ton)

Answers

What is the standard thickness of the anti-corrosion coating for anti-corrosion steel pipes?
The 3PE anti-corrosion coating consists of an epoxy powder layer, an adhesive layer, and a polyethylene layer. The epoxy powder layer provides adhesion and chemical resistance. The thickness of the epoxy powder layer varies depending on the pipe diameter and grade requirements: no less than 120 μm for DN≤500 mm and no less than 150 μm for DN>500 mm; the total thickness can reach 2.7–2.9 mm in reinforced anti-corrosion applications.
What are the standards and specifications for shaped steel pipes?
1. Dimensional Tolerance: This refers to the allowable dimensional deviation range during the production of shaped steel pipes. The size of the dimensional tolerance directly affects the quality and performance of the shaped steel pipe. Generally, the smaller the dimensional tolerance, the higher the quality of the shaped steel pipe.
2. Appearance Quality: This refers to the absence of obvious defects on the surface of the shaped steel pipe, such as cracks, inclusions, and rust. Good appearance quality not only improves the aesthetics of the product but also reduces problems during subsequent processing and use.
3. Mechanical Properties: This refers to the good strength, toughness, and hardness of the shaped steel pipe. The levels of these properties directly determine the safety and reliability of the shaped steel pipe during use.
4. Chemical Composition: This refers to the content of each element in the shaped steel pipe meeting specific standard requirements. A reasonable chemical composition not only ensures that the performance indicators of the shaped steel pipe meet the requirements but also improves its corrosion resistance and wear resistance.
Regarding the classification of special-shaped pipes:
https://www.chinasteelmarket.com/feature-pages/featureinfo/FEATURE%7C-The-Knowledge-Summary-of-Seamless,-Welded-Steel-Pipes,-Stainless-Steel-Pipes,-and-Special-shaped-Steel-Pipes_1166.html
What is the difference between Q235b seamless steel pipe and Q235d seamless steel pipe?
The core distinction between Q345B and Q345D seamless steel pipes lies in Q345D's superior low-temperature impact toughness at -20°C, achieved through stricter composition control and heat treatment processes. This makes it suitable for critical engineering projects in cold environments, whereas Q345B is primarily used in ambient temperature scenarios. Their differing performance characteristics result in distinct pricing and application boundaries.


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