The metal spiral pipe is made of steel strip, formed into spiral seam and welded with double-sided submerged arc welding. Supplied notes show metal spiral pipe ranges such as DN200 to DN4000, while large-diameter projects may use outer diameters above 1000 mm. Common wall thickness in the large pipe file runs from 8 mm to 25 mm, depending on design pressure and trench conditions. The weld gap is controlled around 1 to 3 mm before welding, and the seam can be checked by online ultrasonic inspection when required.
Product Parameters
|
Parameter |
Value |
Notes |
|
Material |
Q235B/Q345B |
Supplied spiral pipe notes |
|
Diameter range |
DN200-DN4000 |
Product process reference |
|
Wall thickness |
8-25 mm |
Large diameter file reference |
|
Weld gap before welding |
1-3 mm |
Forming control |
|
Inspection |
Online ultrasonic test available |
Weld checking option |
Product Advantages
Spiral forming makes wide pipe sizes possible without a very wide steel plate.
Double-sided welding gives a steady seam for long line installation.
Large diameter sections reduce joint quantity on long straight projects.
Coating and end treatment can be arranged after drawings are checked.
Main Applications
1. Water supply and drainage trunk lines where diameter is more important than small bends.
2. Municipal heating routes and low-pressure conveying lines.
3. Piling pipe, bridge work and structural sleeves for civil construction.
4. Oil, gas or slurry lines after the correct coating is confirmed.
FAQ
Q: Can the diameter be changed?
A: Yes. DN200 to DN4000 is listed in the supplied spiral pipe notes, and final size should follow project drawings.
Q: What wall thickness is often used?
A: The large-diameter file mentions 8 mm to 25 mm. The exact value depends on pressure and use.
Q: Can coating be added?
A: Yes. Anti-corrosion coating or end treatment can be arranged after order confirmation.
Q: What should be checked before ordering this metal spiral pipe?
A: Material, size range, wall thickness, surface treatment, test request and delivery length should be checked before production.
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