Stainless Steel : ASTM A182 F304/ 304L/ 304H/ 316/ 316L/ 317/ 317L/ 321/ 310/ 347/904L/ etc. Carbon Steel : ASTM A105/ A105N/A694F42/46/52/56/60/65/ 70 / A350 LF3/ A350 LF2, etc. Alloy Steel : ASTM A182 F1/ F5/ F9/ F11/ F22/ F91/ etc. Others : Monel, Nickel, Inconel, Hastalloy, Copper, Brass, Bronze, Titanium, Tantalum, Bismuth, Aluminium, High Speed Steel, Zinc, Lead, etc. Types : Weldneck , Slipon, Blind, Socket Weld , Lap Joint, Spectacles, Ring Joint, Orifcae, Long Weldneck, Deck Flange, etc. Size : 1/8' NB TO 48' NB Class : 150#, 300#, 400#, 600#, 900#, 1500# & 2500#. Also as per National & International Standard &Specification http://www.ashtapad.co.in/