Common standard for helical steel pipe now is SY5040-83. Piling pipe with spir...
At present, China's foreign trade has entered a new stage, foreign trade’ s traditional. ...
Surface Treatment of SAWH Steel Pipe : 1, clean Used solvent, emulsion clean...
Looking back on the past 2016, it is the crucial year for the structural reform of the supply si...
Spiral welded pipe into the steel unit, multi-channel roll rolling strip gradually r...
The state council information office will held a press conference reference of leading th...
Automatic submerged arc welding was invented in 1940, a new kind of welded pipe metho...
Piling pipe is also known as pipe, welded steel pipe made of steel sheet or strip after ...
Large-diameter welded pipe is the pipe welds, raw materials are mainly steel ...
The American Petroleum Institute specification API 5L steel pipe covers seamles...
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