profile

Channel steels

Flat steel

Angle

I-beams

Square steel

H-beams

wire

Spiral steel

GB701-65

ZBH4403-88

GB4354-84

ZBH44002-88

Wire rod

pipe

Spiral welded pipe

Seamless pipe

Galvanized

pipe

Welded pipe

GB/T3091-1993

ERW welded

Carbon steel pipe

GB/T 12771-1991

GB/T 12770-1991

GB/T 14291-1992

ratio-frequency welded tube

GB8163-99

others

sheet

Steel strip

Steel rod

Spiral steel

Spring roll

And so on