Product Details: Size 1/2 inch, 3/4 inch, 1 inch, 2 inch Range: Socket Weld : 1/2 to 1.25 " upto 9000# 2" upto 6000# Screwed : 1/2 to 1.5" upto 6000# 2" upto 3000# List of Specifications : 1. ANSI/ASME B16.11 Forged- Fittings, Socket Welding & Threading. 2. ANSI B1.20.1 Pipe Threads, General Purpose 3. ASTM A105, A182, A234, A350, A262, A153.