L360/X52直缝...

ASTM A53/A...

L450/X65直缝...

GR.B无缝管，GR...

L360/X52直缝...

厚壁卷管,大口径厚壁...

无缝化管，热轧无缝化...

ERW直缝石油套管,...

车丝热镀锌管,车丝热...

SY5037螺旋管，...

GR.B无缝管，GR...

L360/X52直缝...

L360/X52直缝...

供应大小头,碳钢大小...

供应弯头,不绣钢弯头...

厚壁卷管,大口径厚壁...

Q235B无缝化焊管...

J55石油套管，K5...

车丝热镀锌管,车丝热...

SY5037螺旋管，...

ASTM A53/A...

L415/X60直缝...

ERW直缝石油套管,...

丝扣热镀锌管,丝扣热...

GR.B无缝管，GR...

Q345无缝管，Q3...

L450/X65直缝...

L415/X60直缝...

ERW直缝石油套管,...

丝扣热镀锌管,丝扣热...