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螺旋钢管

   螺旋钢管    标准:SY/T5037-2000,GB/T9711.1-1997,GB/T9711.2-97,API5L PSL1,API5CT PSL2    用途:石油、煤气、天然气、输水管道、热力发电等普通流体工程    规格:Φ219--2220mm,壁厚6--18mm    材质:Q235B / Q345B/L245 / L290 / L360/L415 / L450 / L485/20# / B / X42-70

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J55 无缝套管
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B级钢无缝碳钢钢管 公司产品一览表 螺旋焊管 口径 219--2220mm 壁厚 6--18mm 标准 SY/T5037-2000 GB9711.1 GB9711.2 API5L 材质 Q235B/Q345B/L245/L290/L360/L415/L485/20#/API 5L.B/X42/X46/X...
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