Articles By zora li

Published 1 Month Ago
Prevention of Heat Treatment Defects of Seamless Pipes
1. Definition: According to different uses, the metal material is heated to a suitable temperature and kept warm, and then cooled in different ways to change the metallographic structure of the metal material and obtain the required microstructural proper

Published 1 Month Ago
Nitriding treatment of seamless steel pipe
Precautions for nitriding treatment of seamless steel pipes include

Published 1 Month Ago
Why does the seamless steel pipe fold?
Inward bending is a common quality problem in the production of seamless steel pipes.

Published 1 Month Ago
Cyclic pickling of seamless carbon steel pipes
Pipeline pickling method and general requirements

Published 1 Month Ago
The difference between ERW steel pipe and SSAW steel pipe
Raw material difference;Differences in production process;Purchasing costs are different;Geometry

Published 1 Month Ago
Production process of SSAW pipes
Submerged arc welding is an important welding method.

Published 1 Month Ago
Standards for seamless steel pipes
1. General purpose seamless steel pipe ASTM A53 GR.B2. ASTM A106 GR.B seamless steel pipe for high temperature service3. Line pipe API SPEC 5L, steel grade4. ASTM A106/A53/API 5L GR.B, steel grade

Published 1 Month Ago
Seamless steel pipe hot extrusion
The hot extrusion process of seamless pipe is a pressure forming method, which is to place the tube blank in a pressure-resistant container, and apply an external force to make the tube blank plastically deform under a three-dimensional compressive stress

Published 1 Month Ago
What is the impact toughness of ERW steel pipe?
How to improve the impact toughness of ERW steel pipe weld is a major problem in pipe making technology.

Published 2 Months Ago
Hardness index of seamless pipe
Seamless steel pipes are commonly used to measure Brinell hardness, Rockwell hardness and Vickers hardness.

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