ASTMA106B無縫鋼管-NPS5SCH120
A106B鋼管-BN100SCH10S
GR.B無縫鋼管-NPS30SCH5S
ASTMA106B美標無縫鋼管-NPS6XXS
ASTMA333-6鋼管-NPS11/2STD
美標低溫鋼管-273.1*25.4
美標無縫鋼管-NPS24STD
A333-6無縫鋼管-355.6*19.05
A106B美標鋼管-NPS1/8SCH80
美標合金鋼管-BN300SCH80S
A106B美標鋼管-BN15SCH10
GR.B無縫管-BN10SCH80S
ASTMA106無縫管-BN900SCH10S
ASTM無縫鋼管-965*15.88
A106B美標無縫管-NPS11/4SCH40
GR.B無縫管-NPS14SCH100
美標無縫鋼管-NPS11/4SCH100
ASTM美標鋼管-NPS36XXS
GR.B無縫鋼管-BN500SCH80
美標無縫鋼管-NPS32SCH5S