The introduction of black hollow steel square tube

Black hollow square steel pipe parameters:

Wall thickness: 0.5mm-16mm

Length: 5.5 meters, 5.8 meters, 6 meters, 11.8 meters, 12 meters, etc., other length can be selected according to user requirements.

External diameter: 6.5 x6.5mm - 400 x400mm

Tolerance: wall thickness ± 0.05mm length ±6mm diameter ± 0.3mm

Blacksteel pipe nipples shape: round, square, rectangle, oval, etc.

Material: Q195-Q345, 10 # -45 #, 195-Q345, Gr.B-GR.50, din - s235jr

Technology: cold rolling, hot rolling.

Black hollow square steel tube packing:

Packing with steel straps or loose non-woven fabric or according to customer's requirement

Black hollow square steel pipe application:

Civil engineering, construction, steel tower, shipyard, scaffold, pillar, anti - landslide pile and other structures