ASTMA333-6美标无缝钢管-323.9*33.32
A333-6低温无缝管-762*40
ASTM无缝钢管-NPS16SCH160
美标无缝钢管-NPS24SCH100
A106B无缝管-BN500SCH60
美标合金钢管-1016*12.7
GRB美标无缝钢管-609.6*17.48
ASTMA106无缝管-457.2*45.24
GR.B无缝管-273.1*6.35
A106钢管-BN20SCH80S
GR.B无缝管-BN1200STD
ASTMA106B无缝管-BN25SCH80S
ASTMA333-6钢管-NPS10STD
A106B无缝管-NPS1/2SCH40
A106B钢管-BN90SCH5S
ASTMA106-B无缝管-BN10SCH10
ASTMA106B美标无缝管-NPS20SCH10S
美标低温钢管-219.1*23.01
ASTM无缝钢管-BN900SCH160
ASTM美标无缝钢管-BN700SCH5S
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