... ; Hydrostatic Test, Dimensional and Visual Inspection, Also With Nondestructive InspectionUsage/ApplicationMechanical & manufacture, Steel structure,Shipbuilding, ... lines, LPG & other non-toxic gas pipelinesIndustrial Purposes, Sewerage system, Industrial water lines/plant piping, Vehicular ... selling of square, round, rectangular pipe surfaced with galvanized coating, polish, black painting and oiled ...