Large Spiral Steel Pipe

Product Description:

Spiral welded pipe is manufactured from steel coil. The coil is unwound and then welded while it is being turned into the shape of the pipe. Changing the angle of the spiral and the thickness of the coil is all that is needed to change from one pipe size to another. The two sides of the double submerged arc weld penetrate the full thickness of the steel to ensure the strength of the finished pipe. Full scale tests have shown that high quality spiral welded pipe is as strong as API pipe. The strength and flexible manufacturing of spiral welded pipe make it the product of choice for a variety of applications.

It is made by rolling low-carbon carbon structural steel or low-alloy structural steel strip according to a certain spiral angle (called forming angle) into a tube blank, and then welding the tube seam together. It can be made with a narrower Strip steel produces large diameter steel pipes. Its specifications are expressed by outer diameter * wall thickness, and the welded pipe shall be ensured that the hydraulic test, the tensile strength of the weld and the cold bending performance must meet the requirements.

Usage

1.Widely used in the mechanical treatment field, petrochemical industry, transport and construction field

2.Ordinary structural purposes and mechanic structural purposes, for example in construction field, fulcrum bearing etc;

3.The transportation of fluids in the projects and big equipments, for example transport of water, oil, gas etc

4.Can be used in low and medium pressure boiler for the transportation of fluids, for example steam tube, big smoke tube, small smoke tube, generating tube etc

FAQ

Q: How can we guarantee quality?

A: Always a pre-production sample before mass production;Always final Inspection before shipment.

Q: What is your terms of packing?

A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.

Q: Do you test all your goods before delivery?

A: Yes, we have 100% test before delivery

Q: Could you calculate the shipping cost for me?

A: Of course, we honored to do that! Before freight, please well let us know which seaport or airport near your place.

Q: Can you produce according to the samples?

A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q: Can I place sample order first?

A: Yes, we will quote you different prices for small, medium and large qty. You can order with different price for different qty.

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