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JIS G3444 ERW Steel Pipe
JIS G3444 ERW steel pipe is a welded or seamless carbon steel pipe for general structure, civil engineering, anti-slide pile, construction, struts, scaffolding, steel tower and other structures specified in G3444.
Description
Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of jis g3444 erw steel pipe in China, featured by quality products and low price. If you're going to wholesale durable jis g3444 erw steel pipe made in China, welcome to get pricelist and free sample from our factory.
JIS G3444 ERW steel pipe
Details of JIS G3444 ERW steel pipe
Chemical composition:
| Grade | C | Si | Mn | P | S |
| STK290 | - | - | - | 0.050 max | 0.050 max |
| STK400 | 0.25 max | - | - | 0.040 max | 0.040 max |
| STK500 | 0.24 max | 0.35 max | 0.30 to 1.30 | 0.040 max | 0.040 max |
| STK490 | 0.18 max | 0.55 max | 1.50 max | 0.040 max | 0.040 max |
| STK540 | 0.23 max | 0.55 max | 1.50 max | 0.040 max | 0.040 max |
Tolerance on outside diameter:
| Classification | Tolerancce | |
| Class 1 | under 50mm 50mm or over | ±0.5mm ±1% |
| class 2 | under 50mm 50 mm or over | ±0.25mm ±0.5% |
remarks:
1.The tolerance on the outside diameter of electric resistance welded and arc welded steel tubes exceeding 350mm in outside diameter shall follow class 1 in table 3.and the tolerance thereof at tube ends shall be within ±0.5%
2.The outside diameter of tubes exceeding 350mm in outside diameter may be determined by the length of circumference.
Length:6m,12m or specified by customer
Product show of Details of JIS G3444 ERW steel pipe

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