GB6479-2000/化肥用高压无缝钢管
GB6479-2000 20#/GB6479 48X8 5960<BR>GB6479-2000 20#/GB6479 50X3 5980<BR>GB6479-2000 20#/GB6479 50X3.5 5980<BR>GB6479-2000 20#/GB6479 50X5.5 5980<BR>GB6479-2000 20#/GB6479 50X6 5980<BR>GB6479-2000 20#/GB6479 50X8 5980<BR>GB6479-2000 20#/GB6479 70X6 5960<BR>GB6479-2000 20#/GB6479 70X8 5960<BR>GB6479-2000 20#/GB6479 70X10 5960<BR>GB6479-2000 20#/GB6479 89X4.5 6…
GB6479-2000 20#/GB6479 48X8 5960
GB6479-2000 20#/GB6479 50X3 5980
GB6479-2000 20#/GB6479 50X3.5 5980
GB6479-2000 20#/GB6479 50X5.5 5980
GB6479-2000 20#/GB6479 50X6 5980
GB6479-2000 20#/GB6479 50X8 5980
GB6479-2000 20#/GB6479 70X6 5960
GB6479-2000 20#/GB6479 70X8 5960
GB6479-2000 20#/GB6479 70X10 5960
GB6479-2000 20#/GB6479 89X4.5 6010
GB6479-2000 20#/GB6479 89X6 6010
GB6479-2000 20#/GB6479 89X8 6010