Product Details: Size 1/2 inch, 3/4 inch, 1 inch, 2 inch Forged Nipples Range : Socket Weld : 1/2 to 4 " upto XXS/6000# Screwed : 1/2 to 4" upto 6000# List of Specifications : 1. ANSI/ASME B16.11 Forged- Fittings, Socket Welding & Threading. 2. ANSI/ASME B16.9 Factory- Made Wrought Steel Butt Welding fittings. 3. BS 3799 Steel Pipe fittings, Screwed & Socket Welding for the petroleum industry. 4. ANSI B1.20.1 Pipe Threads, General Purpose 5. ASTM A105, A182, A234, A350, A106, A335, A262, A312, A153.