ASTMA333-6美標低溫鋼管-965*17.48
ASTMA333-6鋼管-NPS18SCH10S
美標合金鋼管-BN1000SCH80S
ASTMA333-6無縫鋼管-BN200SCH5S
ASTM無縫鋼管-NPS48SCH40S
ASTM美標無縫鋼管-508*26.19
GR.B無縫管-NPS4SCH80
美標合金鋼管-114.3*17.12
ASTMA333-6美標無縫鋼管-BN125SCH160
美標無縫鋼管-NPS5STD
A106B美標無縫鋼管-BN100SCH10S
ASTM美標鋼管-323.9*33.32
ASTMA106鋼管-NPS28SCH100
ASTMA333-6鋼管-42.2*9.7
ASTMA106-B美標無縫鋼管-73*7.01
ASTMA106GR.B無縫鋼管-610*17.48
A106B鋼管-NPS21/2SCH40S
美標無縫鋼管-NPS18SCH40
ASTMA333-6無縫管-NPS20XXS
ASTM美標無縫鋼管-BN250SCH80S