By certification 
1. Type: Elbow90, Elbow45, Tee, Cross, Union, Couplings, Half couplings,Cap, Boss, Weldolet, Sockolet, Welding insert, Reducing couplings, Bushing, Straight elbow, Threadolet, Hex head plug, Square head plug, Bull Plug, Round head plug, Hex nipple, Swaged nipple
2. Materials: ASTM A105, ASTM A182-F304, F304L, F316, F316L, F321,ASTM A182-F11, F22, 20#
3. Standard: ANSI/ASME B16.11, MSS SP-79, SP-83, SP-95, SP-97, BS3799 , JIS B2316, GB/T14383, SH3410, HG21634
4. Rating: Threaded fittings: 2000lbs, 3000lbs, 6000lbs.
Socket-weld fittings: 3000lbs, 6000lbs, 9000lbs.
5. Specification: From 1/8" TO 4"
2. Materials: ASTM A105, ASTM A182-F304, F304L, F316, F316L, F321,ASTM A182-F11, F22, 20#
3. Standard: ANSI/ASME B16.11, MSS SP-79, SP-83, SP-95, SP-97, BS3799 , JIS B2316, GB/T14383, SH3410, HG21634
4. Rating: Threaded fittings: 2000lbs, 3000lbs, 6000lbs.
Socket-weld fittings: 3000lbs, 6000lbs, 9000lbs.
5. Specification: From 1/8" TO 4"