Rigid Coupling

Rigid couplings create a non-flexible, integral connection with steel pipes. This enables the pipeline to maintain self-support over longer spans using its own rigidity.

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Rigid Coupling

Rigid Coupling

Standard: ANSI/UL 213C

Housing Material: Ductile iron conforming to ASTM A-536, Grade 65-45-12.

Bolt & Nut: Grade 8.8 carbon steel electroplated bolts.

Gasket: EPDM, nitrile, silicone rubber, etc.

Rated pressure: 300PSI.

Surface: Hot dip galvanizing / Epoxy powder painting/Dip Coating, etc.

Color: Variable colors for choice.

Rigid couplings create a non-flexible, integral connection with steel pipes. This enables the pipeline to maintain self-support over longer spans using its own rigidity.

Nominal Size mm/in	Pipe OD. mm/in	Working Pressure psi/Mpa	Dimensions mm/in			Bolt Size
Nominal Size mm/in	Pipe OD. mm/in	Working Pressure psi/Mpa	A mm/in	B mm/in	C mm/in	No.-Size mm
25 1	33.7 1.327	300 psi 2.07 Mpa	55 2.165	98 3.858	44 1.732	M10*45-2
32 1¼	42.4 1.669		62 2.441	106 4.173	44 1.732	M10*45-2
40 1½	48.3 1.9		68 2.677	113 4.449	45 1.772	M10*45-2
50 2	60.3 2.375		84 3.30	128 5.039	45 1.772	M10*55-2
65 2½	73 2.875		95 3.74	140 5.52	45 1.772	M10*55-2
65 2½	76.1 3		97 3.819	142 5.59	46 1.811	M10*55-2
80 3	88.9 3.5		110 4.331	156 6.142	46 1.811	M10*55-2
100 4	108 4.25		129 5.079	179 7.047	47 1..85	M12*65-2
100 4	114.3 4.5		137 5.394	188 7.402	48 1..89	M12*65-2
125 5	133 5.25		160 6.299	213 8.38	50 1.969	M12*70-2
125 5	139.7 5.5		165 6.496	217 8.543	50 1.969	M12*70-2
125 5	141.3 5.563		170 6.693	218 8.583	50 1.969	M12*70-2
150 6	159 6.25		190 7.48	241 9.48	50 1.969	M12*75-2
150 6	165.1 6.5		194 7.638	246 9.685	50 1.969	M12*75-2
150 6	168.3 6.625		198 7.795	250 9.843	50 1.969	M12*75-2
200 8	219.1 8.625		250 9.843	316 12.441	57 2.244	M16*85-2
250 10	273 10.75		316 12.441	390 15.354	60 2.362	M20*100-2
300 12	323.9 12.750		360 14.173	450 17.716	63 2.48	M20*100-2