News
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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 -
Calculation formula of theoretical weight of steel
Calculation formula for theoretical weight of various steels...Read more -
Storage of seamless steel pipes
In order to better serve our customers and improve the quality of our products, we have made basic requirements for the storage of seamless tubes produced by our company....Read more -
Why the price of billet remains high
With the gradual recovery of downstream terminal demand, billet prices have risen as a whole, especially after April, billet prices have steadily risen, gradually stabilizing above 3,400 yuan/ton....Read more -
Types and production processes of seamless steel pipes
Types of seamless steel pipes and corresponding production processes...Read more