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Welded pipe with continuous helical weld seam

Spiral welded steel pipes are produced by spirally winding a steel strip at a predetermined angle, forming a tube that is welded along the seam. This method allows the use of narrower strips to manufacture large diameter pipes, offering a cost-effective solution for various industrial applications.

Industries such as oil and gas, and water supply rely on spiral welded steel pipes due to their ability to handle large volumes of fluid at high pressures. In the chemical industry, they are used for transporting corrosive substances, while in the power generation sector, they carry steam and water in power plants.

Standard

API 5L
GB/T 9711
SY/T5037
SY/T5040
GB/T3091
ASTM A252

Applications

Low Pressure Liquid Delivery Pipe
Piling Pipe

Size

Outside Diameter: 219mm to 2220mm
Wall Thickness: 3mm to 26mm
Length:
Regular length: 5.8m or 6m or 12m
Custom cut-to-length: 3m to 12m

Surface Finish

Galvanized
Spray Painted
Anti-Rust Oiled
Protective Coated

Spiral Welded Steel Pipe Production Process

Decoiling
Welding
Conveying
Forming
Hydrostatic Test
Cut-Off
Ultrasonic Testing
X-ray Inspection
Marking
Storage