The inspection of oil pipe thread is more complicated, which is divided into coupling thread inspection and pipe body thread inspection.1 Coupling thread InspectionAfter the thread is machined, the si...

In the steel tube production, the steel billet heating process is actually heat transfer process, temperature difference is the basic condition of heat transfer, there is temperature difference will ...

In April 4th, the official website of Nippon Steel announced that in order to meet the demand for tin-coated sheets for containers from local customers mainly consisting of can factories, it has decid...

On March 4, European Commission President von der Leyen convened the key leaders of the EU steel industry, social partners and stakeholders to hold a "steel strategic dialogue", focusing on ...

Heat treatment of metal materials is divided into whole heat treatment, surface heat treatment and chemical heat treatment. Heat treatment of steel tube generally adopts whole heat treatment. General...

Usually the stainless steel tube has three kinds of characteristics: weldability, corrosion resistance, polishing performance (BQ).Weldability: The different requirements for the welding performance o...

The steel ingot can be divided into rimmed steel, killed steel and semi-killed steel according to the different deoxidation degree of the steel.Rimmed steel is a steel without deoxidation or full deox...

Welding is a local rapid heating and cooling process of the heat cycle on welded steel pipes, the heating process causes the metal to melt rapidly into the weld area, and the parent material close to ...

The Competition Commission of India (CCI) has approved Nippon Steel and JFE Steel's proposal to jointly buy a 30 per cent stake in the Blackwater Mine in Queensland, Australia.According to a state...

On-line normalizing is a kind of heat treatment technology developed in recent years, that is also called deformation normalizing. It is the seamless steel pipe just rolling the continuous rolling mi...

Almost all seamless steel tubes require straightening at some point in their production process, regardless of the production process, such as drawing, extrusion, hot rolling, or any other process.The...

1) Chemical compositionThe requirements for the content of hazardous chemical elements such as As Sn Sb Bi Pb and gas N,H,O are proposed, in order to improve the uniformity of chemical composition and...