ERW STEEL PIPESTD :API-5L PSL1/PSL2 GB/T3091-2001 GB/T9711 -1997 SY/T5037-2000MATERIAL : L245~L485 J55 Q235 Q345 20# API GrB , X42~X100W.T : 6~14mmO.D : 21.3mm-1220mmLength : 5.8 m , 6m ,8m ,9m ,10m ,11.8m,12mApplying fields:offshore oil...
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