... ASTM BS GB JIS APISize(O.D)Wall thickness (W.T.)15mm*15mm-600mm*600mm0.5mm-30mmLength2m-12m ,by customer’s ... supply mainsDeep tube wells casing pipes, Gas/Natural gas pipe lines, Oil pipe lines, LPG & other non-toxic gas pipelinesIndustrial Purposes, ... establishment, we have always adhered to the business policy as "Quality for Survival, Product for Development, Credibility for Cooperation and Service ...