ERW WELDED steel pipe and tube

1ERW WELDED steel pipe and tube
2trapezoid pipe
3a*b:27.5*29
4thickness(mm)1.0~2.5
5ISO9001
ERW WELDED steel pipe and tube--trapezoid pipe
a*b:27.5*29
thickness(mm)1.0~2.5
Surface treatment
1.black without surface treatment
2.white without surface treatment
3.hot dipped galvanized
4.zinc-plate
5.made with pre-galvanized steel plate
ISO9001
best price