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1 Scope
This standard specifies dimension, appearance, weight, technical requirements, test method, test rules, packing, and marking and quality certificate of welded steel pipes for low pressure liquid delivery.
This standard is applicable to welded steel pipes for delivering low pressure liquid such as water, air, heating steam and gasses.
This standard comprises longitudinal-seam high-frequency electrical resistance welded (ERW) steel pipes, longitudinal-seam submerged arc welded (SAWL) steel pipe and spiral-seam submerged arc welded (SAWH) steel pipe, and respectively marks different requirements related to them. Those without marks are simultaneously applicable to longitudinal-seam high-frequency electrical resistance welded steel pipe, longitudinal-seam submerged arc welded steel pipe and spiral seam submerged arc welded steel pipe.
2 Normative references
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrigenda contents), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the documents. For undated references, the latest edition of the normative document referred to applies. |
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