... 5L, A53,A106,A333 GR6,Q235,Q345 sell spiral steel pipe Q235 SSAW (Spiral Submerged-arc Welded) Quality standard: API 5L Gas ... Petroleum and natural gas industries--Steel pipe for pipelinesSY/T5037 Spiral submerged arc-welded steel pipe for pipelines for low pressure ... ( Bending Test, Blow Test, Impact Test), ExteriorSize Inspection, Hydrostatic Test, X-ray Test.Mill Test Certificate:EN 10204/3.1B Third ...