China 20X20 Black Annealing Square Tube, 40*80 Rectangular Steel Hollow Section, Find details about China Steel Tube, Steel Square Tube from 20X20 Black Annealing Square Tube, 40*80 Rectangular Steel Hollow Section
Construction Use: Hall Structure, Sea Trestle, Airport Structure, Shipbuilding, Security Door Frames, Garage Doors,
Strengthening Liners of Steel Doors and Windows, Indoor Partition Walls, Cable Bridge Structures and Expressway
Safety Guards, Balustrade, Decorating, Residential, Ornamental Pipes