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

1, Sizes: OD21.3mm –OD660mm;

2, Wall thickness: WT1.8mm – WT 22.2mm

3, Steel Grade: C250, C350

4, Pipe Length: SRL, DRL. Or other fixed length max. to 12.5meters without girth welding.

5, Pipe Ends: beveled ends, plain ends.

6, Zinc Coating: hot-dip galvanized coating applicable in acc. to AS/NZS 4680, AS 4750 or AS/NZS 4792 as appropriate.