Socket Welding Coupling

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Nominal Size		Depth of socket (min.) S	Coupling distance between bottoms of sockets E	Bore diameter of socket (min.) B	Socket wall thickness (min.) C		Bore diameter of fitting d*
Nominal Size		Depth of socket (min.) S	Coupling distance between bottoms of sockets E	Bore diameter of socket (min.) B	3000	6000	3000	6000
in	mm	mm	mm	mm	mm	mm	mm	mm
1/8	6	10	6	10.7	3.2		6.8
1/4	8	10	6	14.1	3.3		9.2
3/8	10	10	6	17.6	3.5		12.5
1/2	15	10	10	21.8	4.1	5.2	15.5	11.8
3/4	20	13	10	27.4	4.3	6.1	21.0	15.5
1	25	13	13	34.1	5.0	7.0	26.5	20.5
1 1/4	32	13	13	42.9	5.3	7.0	35.0	29.5
1 1/2	40	13	13	49.0	5.6	7.8	40.5	34.0
2	50	16	19	61.0	6.1	9.5	52.0	43.0
2 1/2	65	16	19	73.8	7.7	10.4	62.0	54.0
3	80	16	19	89.7	8.3	12.2	78.0	67.0