... EN 10219,ASTMA500,GB/T 3094-2000,GB/T 6728-2002,GB/T178-2005,JISG3466 ... Nondestructive InspectionApplicationsWater Pipelines, Waste waterlines , Water supply mainsDeep tube wells casing pipes, Gas/Natural ... non-toxic gas pipelinesIndustrial Purposes, Sewerage system, Industrial water lines/plant piping, Vehicular chassis and frames ... kindly rely . thanks Q195/ Q235B /Q 345 Black Square Pipe /Square pipe