... L555 Usage: low pressure liquid delivery, such as water, oil, gas. structural pipe, piling pipe. End: Plain end ... , beveled end Surface: Black oil, Bare, Varnish coating, Antirust oil, Coal Tar Epoxy, Fusion Bond Epoxy, ... strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Third party inspection: ...