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Black antirust UV paint for petroleum steel pipe

Petroleum steel pipe plays an important role in petroleum industry, not only for its huge output, but also for its quality and performance. Petroleum steel pipe mainly includes oil well pipe (drill pipe, drill collar, casing, tubing, etc.) and oil and gas transmission pipe.

2020-05-11T12:50:52+08:00 May 11th, 2020|

Production process of hot rolled seamless steel pipe

There are 11 steps in the production process of hot-rolled seamless steel pipe, which are preparing the pipe blank, heating the pipe blank, piercing, rolling the pipe, reheating, reducing the diameter, conducting heat treatment, straightening the finished pipe, further finishing, and inspecting the seamless steel pipe.

2020-02-25T17:49:21+08:00 February 25th, 2020|

Product standard of mechanical steel pipe

The blank of welded steel pipe is steel plate or strip steel. Due to different welding processes, it can be divided into steel pipe for furnace machinery (welded pipe), electric welding (resistance welding) pipe and steel pipe for automatic arc machinery (welded pipe).

2020-01-13T14:56:25+08:00 January 13th, 2020|

Corrosion protection of stainless steel

Corrosion of stainless steel is a very complex electrochemical process, especially in the sea water environment by biological, physical, chemical and other factors. There are many anti-corrosion technologies for stainless steel.

2020-01-06T16:00:47+08:00 January 6th, 2020|

Corrosion mechanism of stainless steel in seawater

The corrosion resistance of stainless steel mainly depends on the isolation of passive film. The passivation film on the surface of stainless steel consists of two parts, the inner layer is mainly composed of chromium oxide, which has strong blocking effect on corrosive ions, while the outer layer is mainly composed of iron oxide and hydroxide.

2019-12-30T20:45:44+08:00 December 30th, 2019|