Is ssaw steel pipe and sawh steel pipe the same?
2024-10-24
Low pressure fluid conveying welded steel pipe standards include welded steel pipes and galvanized steel pipes;
The GB/T 3091-2015 standard for welded steel pipes for low-pressure fluid delivery specifies the size, shape, weight, technical requirements, test methods, inspection rules, packaging, markings and quality certificates of welded steel pipes for low-pressure fluid delivery. This standard applies to longitudinally welded steel pipes, longitudinally submerged arc welded (SAWL) steel pipes, and spirally welded submerged arc welded (SAWH) steel pipes for the transportation of low-pressure fluids such as water, air, heating steam, and gas, and makes separate requirements for their different requirements.
If not marked, it is also applicable to straight seam high frequency electric welded steel pipes, straight seam submerged arc welded steel pipes and spiral seam submerged arc welded steel pipes. This standard replaces GB/T 3091-2008 "Welded Steel Pipe for Low Pressure Fluid Transport". Compared with GB/T 3091-2008, the main technical changes of this standard are as follows:
The outer diameter and wall thickness of 219.1mm and below steel pipes and their delivery methods have been modified;
The out-of-roundness requirements of steel pipes have been modified ;
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