Spiral steel pipe

Spiral steel pipe 1)standard:GB 2)Grade:10# 20# 45# q235 q345 q195 3)usage:conveying fluid,gas and so on 4)od:237-2438m

Spiral steel pipe1. Out Diameter: 21.3mm - 350mm

2. Thickness: 0.6mm -20.0mm

3. Steel Grade: Q195-Q345, 10#-45#

4. Standard: GB/T 3091-2001, BS1387-1985, DIN EN10025, EN10219, ASTM SCH40, ASTM SCH80

 Process

1. Book Review: The coil forming all the pressure level

2. Welding: welding together the forming of sheet

3. Delivery: Delivery to the sheet forming machine

4. Forming: Tube Forming

5. Ultrasonic testing: the forming of the pipe by ultrasonic testing, will pick up the defective pipe

6. Cutting: The different lengths of pipe cut to length

7. Flat: tube ends debarring to smooth pipe end

8. Pressure test: The forming of the pipe by water pressure test, pressure test tube capacity

9. The ultimate test: Check whether the defective pipe surface

10. Standard spray: spray tube identification, production standards, specifications

11. Warehousing: storage weight

Spiral steel pipe