... Co., Ltd offers independent lab test reports for our Spiral steel pipes when required. Test reports are from a well ... , two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, ... Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.Third party inspection:SGS, ...