SSAW Pipe

Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of ssaw pipe in China, featured by quality products and low price. If you're going to wholesale durable ssaw pipe made in China, welcome to get pricelist and free sample from our factory.

SSAW PIPE 

SSAW pipe, spiral welded steel pipe

Size range: 219.1mm to 2320mm

Length: 6m to 14m

Manufacturing process of SSAW pipe

PLATE

The raw material–pieces of flat steel plate–is received into our manufacturing plant.

CUTTING

A single flat sheet of steel plate is cut on a burning table, using plasma or cutting gases. This plate

is cut according to the required width and length for the cylinder it will be rolled into.

BEVELING

After the plate is cut, it is transferred to the beveling station where different bevel angles are cut into the plate edge for welding.

BENDING

After beveling, the plate is transferred to the bending rolls. WANLEI uses a 4-roll system to produce a true cylinder, also referred to as a can.

WELDING

The can is then staged for longitudinal welding (Long Seam). During this process, the seam between the two plates is welded on both the inside and outside, using a tandem wire submerged arc welding process.

QUALITY CONTROL

Once the welding is complete, the can is visually inspected by Quality Control (QC) and, if required, Ultrasonic (UT) testing is performed to ensure the weld is defect-free.

CIRCUMFERENTIAL WELDING

During this last step of the manufacturing process, cans are fit together and the pipe is manufactured using the submerged arc process, according to customer requirements for specific lengths.

FINISHED PIPE

The finished pipe, produced according to the customer’s specifications, is then removed and ready for delivery.

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