Backing Ring Flange Dimensions

Size Pipe	Overall	Internal	PCD	Thick	Thick	Hole	No of	Approx.
NB	Dia.	Dia.		ness	ness	Dia.	Holes	Wgt
Tube				Standard	86037
(mm)	mm	mm						(Kg)
250 / 267	406	280	356	22	22	22	12	11.57
300 /324	457	341	406	25	24	26	12	14.37
50 / 57	152	69	114	10	16	17.5	4	1.44
65 / 76	165	88	127	10	16	17.5	4	1.51
80 / 89	184	101	146	11	18	17.5	4	1.97
100 / 108	216	120	178	13	18	17.5	8	2.54
125 / 133	254	145.5	210	13	18	17.5	8	2.58
20 / 25	102	33	73	6	16	14	4	0.67
25 / 30	114	40	83	7	16	14	4	0.85
32 / 38	121	48	87	8	16	14	4	0.90
40 / 44.5	133	54.5	98	9	16	14	4	1.13
150 /159	279	171.5	235	17	18	22	8	4.39
200 / 219	337	232	292	19	20	22	8	7.39