ERW pipe is the abbreviation of "high frequency resistance welded steel pipe". Resistance welding has the characteristics of high production efficiency, low cost, material saving, easy automation, ...
ERW pipe is the abbreviation of “high frequency resistance welded steel pipe”. Resistance welding has the characteristics of high production efficiency, low cost, material saving, easy automation, etc., so it is widely used in aviation, aerospace, energy, electronics, automobiles, light industry and other industries Department is one of the important welding processes.
Dimensions, Specifications, Sizes of ERW Steel Pipe
| OD | WT | |||||||||||||||||||||||||
| Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | Inch | mm | |
| 0.157 | 4 | 0.173 | 4.4 | 0.205 | 5.2 | 0.22 | 5.6 | 0.25 | 6.4 | 0.28 | 7.1 | 0.312 | 7.9 | 0.344 | 8.7 | 0.375 | 9.5 | 0.406 | 10.3 | 0.5 | 12.7 | 0.562 | 14.3 | |||
| 8 5/8 | 219.1 | |||||||||||||||||||||||||
| 10 3/4 | 273.1 | |||||||||||||||||||||||||
| 12 3/4 | 323.9 | |||||||||||||||||||||||||
| 14 | 355.6 | |||||||||||||||||||||||||
| 16 | 406 | |||||||||||||||||||||||||
| 18 | 457 | |||||||||||||||||||||||||
| 20 | 508 | |||||||||||||||||||||||||
| 10022 | 559 | |||||||||||||||||||||||||
| 241 | 610 | |||||||||||||||||||||||||
The production process of ERW steel pipe:
Uncoiling— 2. Straightening— 3. End cutting— 4. End shearing and welding— 5. Super convolution— 6. Edge cutting— 7. Ultrasonic testing– – 8. Forming — 9. Induction welding — 10. Weld ultrasonic testing — 11. Welding — 12. Weld ultrasonic testing — 11. Medium frequency heat treatment — 12. Air cooling – — 13. Water cooling — 14. Sizing — 15. Fly cutting — 16. Washing — 17. Cutting — 18. Flatness test — 19. Straightening — 20 . End face and chamfer — 21. Hydrostatic test — 22. Ultrasonic testing of welds — 23. Ultrasonic testing of pipe ends — 24. Visual and dimensional inspection — 25. Weighing and measurement — 26. Marking — 27. Coating — 28. Pipe end protection — 29. Bending — 30. Transportation
ASTM A53 B ERW Steel Pipe Applications
1 Construction: water towers, boilers, hot water transportation, etc. that draw a lot of groundwater under the largest pipelines.
2 Processing categories: bearing sleeves, processing machinery and other accessories.
3 Electrical: gas distribution, hydraulic fluid conduits.
4 Anti-static pipes for wind power plants.
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