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Dimensional tolerance of erw steel pipes
ERW steel pipes means Electric Resistance Welded Pipes. ERW steel pipes and tubes are used. ERW steel pipes and tubes are used in various engineering purposes, fencing, scaffolding, line pipes etc.
Tolerance of outside diameter
| Standard | Out Diameter | Tolerance of Pipe End | Tolerance of Pipe Body |
| API 5L | 219.1-273.1 | +1.6mm, -0.4mm | ±0.75% |
| 274.0-320 | +2.4mm, -0.8mm | ±0.75% | |
| 323.9-457 | +2.4mm, -0.8mm | ±0.75% | |
| 508 | +2.4mm, -0.8mm | ±0.75% | |
| 559-610 | +2.4mm, -0.8mm | ±0.75% |
Tolerance of wall thickness
| Standard | Grade | Out Diameter | Wall Thickness |
| API 5L | / | 219.1-457 | +15%, -12.5% |
| B | 508-610 | +17.5%, -12.5% | |
| X42-X80 | 508-610 | +19.5%, -8% |
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Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.
