1)widely used in various Industries 2) very useful one in automobile Industries, structure etc. 3)also manufacture Galvanized Size (mm)ThicknessSpecificationEnd Use15 NB to 500 NBSch10 to Sch. 40ASTM A 53 A / BOil and Gas, Chilled water15 NB to 150 NBL, M, HDIN 2440/ BS 1387/ EN10255Water Line, Irrigation15 NB to 150 NBL,M & HIS 1239 (PT-1 2004), ISWater line, Irrigation165.1MM OD to 508 MM OD2. ...