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Tianjin Wanlei Steel Pipe Co.,Ltd
TEL: 86-22-65815991
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Large Diameter ERW Steel Pipe
large diameter ERW steel pipe, API 5L large diameter ERW steel pipe, ASTM A53 large diameter ERW Steel pipe, material: PSL1/PSL2 B,X42,X52,X56,X60,X65,X70,X80,Q235,Q345.
Description
Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of large diameter erw steel pipe in China, featured by quality products and low price. If you're going to wholesale durable large diameter erw steel pipe made in China, welcome to get pricelist and free sample from our factory.
Large diameter ERW steel pipe
Description of large diameter ERW steel pipe
Outer diameter: 406.4mm-660.4mm
Wall thickness: 6.4mm-34.9mm
Standard: API 5L, ISO3183, GB/T 9711, DNV-OS-F101, ASTM A671, ASTM A672 etc.
Steel grade: X42-X80, Q235, Q345 etc.
Unit length: 5.8m-12.5m
Annual output: 150,000tons.
Main tolerance of large diameter ERW steel pipe
1.Pipe except the end diameter tolerance
| D≤60.3mm | -0.8mm, +0.4mm |
| 60.3mm＜D≤168.3mm | ±0.0075D |
| 168.3mm＜D≤609.6mm | ±0.0075D Maximum is ±3.2mm |
| 609.6mm＜D≤1422mm | ±0.005D Maximum is ±4.0mm |
2.Pipe end diameter tolerance
| D≤168.3mm | -4mm, +1.6mm |
| 168.3mm＜D≤609.6mm | ±0.005D, Maximum is ±1.6mm |
| 609.6mm＜D≤1422mm | ±1.6mm |
3.Thickness tolerance
| t≤5.0mm | ±0.5mm |
| 5mm＜t＜15mm | ±1.0t |
| 15mm≤t | ±1.5mm |
4.Length
±500mm
5.Straightness
≤0.2%L
6.Out-of roundness
| 60.3mm≤D≤609.6mm | 0.015D |
Surface painting of large diameter ERW steel pipe
No painting/Bare surface
varnish painting
black painting
hot dipped galvanized
3LPE
3PP
FBE
zinc phosphate primer
other painting can be made as per customers' request
Packing of large diameter ERW steel pipe
End protect: plastic end caps, pipe ends protectors
Surface protect: cutton ropes for each ends to avoid friction between pipes.
Other packing ways can be made as per customers' request
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