Product News
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What are the classifications of stainless steel tees
Due to the large equipment tonnage required for the hydraulic bulging process of stainless steel tee, it is mainly used for the manufacture of stainless steel tee with standard wall thickness less than dn400 in China. The applicable forming materials are low carbon steel, low alloy steel a...Read more -
What’s the background of black steel pipe?
History of Black Steel Pipe William Murdock made the breakthrough leading to the modern process of pipe welding.In 1815 he invented a coal burning lamp system and wanted to make it available to all of London. Using barrels from discarded muskets he formed a continuous pipe delivering the coal ga...Read more -
Non-destructive testing of LSAW steel pipe
1.Basic requirements for the appearance of LSAW welds Before the non-destructive testing of LSAW steel pipes, the inspection of the weld appearance shall meet the requirements. The general requirements for the appearance of LSAW welds and the surface quality of welded joints are as follows: the a...Read more -
The difference between cold forging and hot forging flange
The forging process of flange can be divided into hot forging and cold forging. The differences are as follows: In the hot forging of flange, the large flange with complex shape can be forged due to the small deformation energy and deformation resistance. In order to obtain the flange with...Read more -
Difference between ERW and SAW steel pipe
ERW is a electric-resistance welded steel pipe, Resistance welded steel pipe is divided into exchange of welded steel pipe and DC welded steel pipe in two forms. AC welding in accordance with different frequencies are divided into low-frequency welding, IF welding, welding of ultra-IF and high-fr...Read more -
ERW carbon steel pipe vs spiral pipe
ERW carbon steel pipe vs spiral pipe: First, the difference between the production process ERW carbon steel pipe is the hot rolled coil through the continuous roll forming, the use of high-frequency current skin effect and proximity effects, so that the edge of the coil heat fusion, pressure in t...Read more