美標(biāo)合金鋼管-BN300SCH160
美標(biāo)無縫鋼管-BN40SCH40
ASTMA106-B美標(biāo)無縫管-BN700SCH120
ASTMA333-6無縫鋼管-BN65SCH10
A106B無縫管-BN6SCH20
ASTMA333-6無縫鋼管-NPS30SCH30
A106B美標(biāo)鋼管-NPS31/2SCH40
ASTM無縫鋼管-BN6SCH30
ASTMA106-B美標(biāo)無縫管-BN700XS
ASTMA106-B美標(biāo)無縫管-NPS46SCH10
GR.B無縫鋼管-NPS21/2SCH20
ASTMA333-6鋼管-NPS42SCH5S
ASTMA106B無縫鋼管-BN10XXS
ASTMA333-6無縫鋼管-219.1*20.62
A106B美標(biāo)無縫管-NPS16SCH40
ASTMA106無縫鋼管-BN600SCH80S
美標(biāo)合金鋼管-NPS42SCH20
ASTMA333-6鋼管-NPS30SCH10
ASTM美標(biāo)無縫管-BN65SCH10
ASTMA106無縫管-BN250SCH20