News
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15NiCuMoNb5-6-4 seamless steel tubes successfully delivered
On September 7, 2020, our company successfully delivered EN10216-2 15NiCuMoNb5-6-4 Seamless Steel Tubes. Specification:244.5 * 20 * 8000MM...Read more -
Cold-drawn process of precision seamless steel tube
Precautions for cold-drawn of precision seamless steel tubes...Read more -
Cracking analysis of cold drawn seamless steel pipe
In the cold drawing process of seamless steel pipes, there are cold work hardening and hydrogen embrittlement, which are the main causes of steel pipe cracking...Read more -
Improve the accuracy of seamless pipe wall thickness
The control of the wall thickness of seamless steel pipes is a difficult point in the production of steel pipes. The measures to improve the wall thickness accuracy in production mainly include the fol...Read more -
Common defects of thick-walled seamless steel pipes
The unevenness of thick-walled seamless steel pipes is mainly manifested as uneven spiral wall, uneven linear wall thickness, and thick and thin wall thickness at the head and tail....Read more -
Phosphorization of seamless steel pipe
Phosphorization is a commonly used pretreatment technology. In principle, it should be a chemical conversion film treatment. It is mainly used for Phosphorization on the surface of steel. Non-ferrous m...Read more -
Pickling of seamless steel pipes
Pickling of seamless steel pipes In the rolling of seamless steel pipes, especially in the production process of precision seamless steel pipes, the pickling process is very important to remove the oxi...Read more -
Inspection of seamless steel pipe before delivery
Surface quality inspection, geometric dimensions; chemical composition, mechanical properties, process performance, high and low magnification structure inspection; non-destructive inspection inspectio...Read more