... .0351741317.5-24 SAW/SSAW Spiral Welded Steel PipeQUALITY STANDARD1>SY/T 5040 Spiral submerged arc ... Airport Structure, Shipbuilding, Security Door Frames, Garage Doors, Strengthening Liners of Steel Doors and Windows, Indoor Partition Walls, Cable Bridge ... Handling,Mechanical Parts 4>Traffic Walking Rails, Roll-up Doors, Guardrail, Plaza Structure, Signage, Road Furniture, FencingLogistics Storage ...