美標無縫鋼管-BN6SCH80S
ASTM美標鋼管-BN15SCH140
ASTMA333GR6低溫無縫鋼管-168.3*6.4
GR.B無縫鋼管-457.2*23.83
ASTM美標無縫管-BN1200SCH160
ASTMA106無縫鋼管-NPS11/2SCH30
ASTM美標無縫管-219.1*23.01
ASTMA106-B美標無縫管-NPS8SCH140
GRB美標鋼管-NPS24SCH80S
GR.B無縫管-1168*12.7
美標合金鋼管-NPS21/2SCH100
ASTMA333-6無縫鋼管-BN1200SCH100
ASTMA106-B美標無縫管-914*12.7
A106B無縫鋼管-NPS1/8SCH80
ASTM美標無縫管-BN32XXS
ASTMA106GR.B無縫鋼管-NPS8XXS
ASTMA333-6鋼管-BN6SCH120
ASTMA333-6無縫管-NPS21/2XXS
A106B美標無縫鋼管-610*38.89
ASTM無縫鋼管-BN25XXS
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