32 Inch Hot Rolled C250 AS/NZS 1163 C250 ERW Steel Pipe
ERW is a process where electrical contacts or induction coils are used to manufacture the pipe. Steel strip is uncoiled, leveled and crop-sheared. It is then trimmed on both sides at the same time to correct width and immediately fed into the forming and welding line. This strip is fed into a series of cold forming rolls, where it is formed into a tubular shape, and then joined by high frequency electric resistance welding. The resulting product has a uniform wall thickness, and the welded area is heat-treated by post annealing to ensure adequate ductility at the weld. Once the pipe has been cut to size,
ERW steel pipe used for transporting gas and liquid objects such as oil and gas, could meet the low and high pressure requirement. In recent years, with the development of ERW technology, more and more ERW steel pipe used in the oil and gas fields, automobile industry and so on.
AS/NZS 1163 specifies the requirements for cold-formed, electric resistance-welded, carbon steel hollow sections used for structural purposes. It considers three strength grades, with or without impact properties, that are suitable for welding.
It is applicable to structural hollow sections formed cold without subsequent heat treatment. The standard does not cover submerged arc-welded, helical welded or U’ed and O’ed steel hollow sections. Here apply this standard in the ERW pipes production.
CHEMICAL COMPOSITION
| Grades | Chemical composition( cast or product analysis) %max. |
| C | Si | Mn | P | S | Cr | Mo | Al | Ti | Micro-alloying elements | CE |
| C250,
C250L0 | 0.12 | 0.05 | 0.50 | 0.03 | 0.03 | 0.15 | 0.10 | 0.10 | 0.04 | 0.03 | 0.25 |
| C350,
C350L0 | 0.20 | 0.45 | 1.60 | 0.03 | 0.03 | 0.15 | 0.10 | 0.10 | 0.04 | 0.03 | 0.43 |
Our Advantage:
Huayang specialized in manufacturing welded carbon steel pipes for 14 years. The annual output is around 1,000,000 tons. Our products have been exported to 40 countries and regions till now, such as Canada, Hong Kong, Vietnam, Bangladesh, The U.A.E, America, Spain, Italy, Netherlands, Kuwait, Saudi Arabia etc. So any inquiry or special demands will get fast and most professional reply.
Why choose us?
1. We are API/ISO Certificated manufacturer.
2. Have cooperated with a lot of importers for more than 8 years.
3. Experienced in doing business with big customers.
4. Quick delivery time for decent orders.Near to Tianjin port.
5. Factory audited by SGS.
6. Free samples could be provided.
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32 Inch Hot Rolled C250 AS/NZS 1163 C250 ERW Steel Pipe Images
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