CANGZHOU STEEL PIPE & FITTING CO.,LTD
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ASTM A-53B 1/2"-24"
ASTM A106B API 5L GR
API 5L PSL2 Steel Pi
API 5CT Oil Casing P
API 5L PSL1 Steel Pi
Welding Steel Pipe
ERW PIPE
API 5L Line Pipe
ASTM A53 SEAMLESS PI
A106 GRADE B SEAMLES
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