Threaded Coupling

Forged Threaded Couplings connect two pipes of the same or different diameters, providing strong, leak-proof threaded joints without welding. Widely used in high-pressure, small-bore piping systems.

Precision-forged, heat-treated, and CNC-machined per ASME B16.11 and MSS-SP-83 for dimensional accuracy and long-lasting performance.

Types	Full Coupling, Half Coupling, Reducing Coupling, High-Pressure Coupling
Size	1/8" NB To 4" NB
Class	2000#, 3000#, 6000#, 9000#
Stainless Steel	ASTM A182 F304/304L/316/316L/321/904/904L, SUPER DUPLEX
Carbon Steel	ASTM A105/A105N/A350 LF2
Alloy Steel	ASTM A182 F5/F9/F11/F22/F91
Duplex / Super Duplex	ASTM A182 F51/F53/F55/UNS S31803/S32750/S32760
Non-Ferrous / Exotic Grades	Monel, Inconel, Hastelloy, Copper Nickel, 70/30 Copper Nickel, DOW Copper, Aluminium
Standards & Specifications	ASME-B16.11, MSS-SP-79/SP-83/SP-95, BS-3799, NACE-MR0175/MR0103, IBR / PED Certification

Threaded Fittings Dimension Table

Nominal Pipe Size	Center-to-End Elbows, Tees, and Crosses, A			Center-to-End 45° Elbow, C			Outside Diameter of Band, H			Minimum Wall Thickness, G			Minimum Length of Thread B	L2
Nominal Pipe Size	2000	3000	6000	2000	3000	6000	2000	3000	6000	2000	3000	6000	Minimum Length of Thread B	L2
1/8	0.81	0.81	0.97	0.69	0.69	0.75	0.88	0.88	1	0.125	0.125	0.25	0.25	0.2639
1/4	0.81	0.97	1.12	0.69	0.75	0.88	0.88	1	1.31	0.125	0.13	0.26	0.32	0.4018
3/8	0.97	1.12	1.31	0.75	0.88	1	1	1.31	1.5	0.125	0.138	0.275	0.36	0.4078
1/2	1.12	1.31	1.5	0.88	1	1.12	1.31	1.5	1.81	0.125	0.161	0.321	0.43	0.5337
3/4	1.31	1.5	1.75	1	1.12	1.31	1.5	1.81	2.19	0.125	0.17	0.336	0.5	0.5457
1	1.5	1.75	2	1.12	1.31	1.38	1.81	2.19	2.44	0.145	0.196	0.391	0.58	0.6828
1 1/4	1.75	2	2.38	1.31	1.38	1.69	2.19	2.44	2.97	0.153	0.208	0.417	0.67	0.7068
1 1/2	2	2.38	2.5	1.38	1.69	1.72	2.44	2.97	3.31	0.158	0.219	0.436	0.7	0.7235
2	2.38	2.5	3.25	1.69	1.72	2.06	2.97	3.31	4	0.168	0.281	0.476	0.75	0.7565
2 1/2	3	3.25	3.75	2.06	2.06	2.5	3.62	4	4.75	0.221	0.301	0.602	0.93	1.138
3	3.38	3.75	4.19	2.5	2.5	3.12	4.31	4.75	5.75	0.236	0.348	0.655	1.02	1.2
4	4.19	4.5	4.5	3.12	3.12	3.12	5.75	6	6	0.258	0.44	0.735	1.09	1.3

Threaded Fittings Weight Chart

Also Refer: Updated Threaded Fittings Pressure Wise — Class 3000 to 6000

Class 3000 Threaded Fittings Weight (in KG)

Size	Union	Half Couplings	Couplings	Cap	Tee	45° Elbow	90° Elbow	Hex Plug
1/2"	0.34	0.06	0.06	0.11	0.56	0.34	0.43	0.07
3/4"	0.48	0.10	0.10	0.18	0.92	0.56	0.69	0.14
1"	0.77	0.23	0.23	0.37	1.49	0.94	1.14	0.22
1¼"	1.03	0.34	0.34	0.62	1.76	1.03	1.42	0.44
1½"	1.63	0.54	0.54	0.72	3.27	2.05	2.63	0.59
2"	2.43	0.70	0.70	1.09	3.53	2.23	2.92	1.03
2½"	3.63	1.13	1.13	2.22	6.99	3.71	5.99	1.80
3"	5.27	1.68	1.68	3.50	10.19	5.97	8.88	2.60

Class 6000 Threaded Fittings Weight (in KG)

Size	Union	Half Couplings	Couplings	Cap	Tee	45° Elbow	90° Elbow	Hex Plug
1/2"	0.62	0.16	0.32	0.26	0.98	0.63	0.80	0.07
3/4"	0.92	0.22	0.44	0.40	1.65	1.07	1.31	0.14
1"	1.45	0.43	0.86	0.51	2.17	1.27	1.61	0.22
1¼"	1.79	0.92	1.04	0.71	3.74	2.27	2.93	0.44
1½"	3.02	1.16	1.87	1.40	4.71	2.54	3.79	0.59
2"	4.62	1.73	2.81	2.06	7.88	4.37	7.31	1.03
2½"	6.37	2.37	4.21	3.35	13.11	7.01	9.88	1.80
3"	3.43	6.21	5.16	22.50	14.16	16.43	2.60	-

Location