... ASTM BS GB JIS APISize(O.D)Wall thickness (W.T.)15mm*15mm-600mm* ... wells casing pipes, Gas/Natural gas pipe lines, Oil pipe lines, LPG & other non-toxic ... industry, Food Processing, Pharmaceutical, Petrochemical, Chemical, Machine Building, Automobile.Main marketNorth America South America Eastern ... always adhered to the business policy as "Quality for Survival, Product for Development, Credibility for ...