Spiral welded pipe production uses hot rolled coil.
The alloy content of the coil is often lower than similar grades of steel plate, improving the weldability of the spiral welded pipe. Due to the rolling direction of spiral welded pipe coil is not perpendicular to the pipe axis direction, the crack resistance of the spiral welded pipematerials.
Because of the unique performance of the spiral pipe, when spiral welded pipe blasting occurred, the weld suffered stress and co-stress is relatively small, blasting the mouth is generally not the origin of the spiral weld, so the higher security. Spiral weld near the defect with parallel spiral weld force is smaller, so the risk of expansion is not.
Steel pipe subjected to internal pressure, usually in the wall on the two main application of force, the radial stress δY and axial stress δX. Weld resultant stress δ = δY (l/4sin2α + cos2α) 1/2, which, α is the helix angle of the spiral weld pipe.
Because of the unique performance of the spiral pipe, when spiral welded pipe blasting occurred, the weld suffered stress and co-stress is relatively small, blasting the mouth is generally not the origin of the spiral weld, so the higher security. Spiral weld near the defect with parallel spiral weld force is smaller, so the risk of expansion is not.
Steel pipe subjected to internal pressure, usually in the wall on the two main application of force, the radial stress δY and axial stress δX. Weld resultant stress δ = δY (l/4sin2α + cos2α) 1/2, which, α is the helix angle of the spiral weld pipe.
The helix angle of the spiral weld pipe is generally 50-75 degrees, so the spiral weld large resultant stress. In the same work under the pressure of the same diameter spiral welded pipe wall thickness can be reduced a lot, spiral pipe plant can be made into a small caliber.
 |
<
>
|
Related information of weld steel pipes:
- ASTM A53 Standard Specifications
- ASTM A252-89 Standard specification
- Welded pipe Manufacturing Processes
- Electric resistance welding at a glance
- Difference between ERW, SSAW, LSAW
- What is welding steel tube?
- Spiral welded steel pipe
- Type of anti-corrosion steel pipe
- The Purpose Guidance Of Welded Steel Pipe
- IPN8710 Water pipe inner wall
- 2PP/3PP Anti-corrosion pipe
- Pipe cement mortar lining
- Single-layer anti-corrosion epoxy powder pipe
Related Products :
- ASTM A179 for Heat Exchanger and Condensers
- ASTM A192 Steel Tubes for High-pressure Steel Boiler Tube
- ASTM A511/A511M Standard Specification for Mechanical
- ASTM A335 Pipe Specifications
- ASTM A333 Standard Specification
- ASTM A213M-09 Standard Specication
- ASTM A210/ASME SA210 Standard Specification
- How to calculate a steel pipe theoretic weight
- packing seamless pipe, Pipe beveling
- ASTM Standards for steel pipes
- Cold drawn seamless steel tube process
- DIN17175 ST35.8, ST45.8 Specifications
- ASTM A179 Cold Drawn Low Carbon Steel Pipe
- ASTM A192 Steel Tubes for High-pressure Steel Boiler Tube
- ASTM A106 Seamless carbon steel tube for high temperature service
- Tubes in small calibers for boilers and petro chemical industry
