ASME B16.5 socket weld flanges, Class 300

Every size in the table, in mm, with a 3D model drawn from the same figures. See socket weld flanges for materials, standards and the marking.

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6" Class 300 socket weld

Dimensions

Standard

Rating

Type

Units

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Socket weld flanges, ASME B16.5 Class 300, dimensions in mm
DNNominal size	OFlange diameter	TfFlange thickness	XHub diameter	YLength through hub	DDepth of socket	RRaised face diameter	TrRaised face height	WBolt circle (PCD)	dBolt hole diameter	nNumber of holes	kgWeight, approx.	Enquiry list
15	95	12.7	38	23	10	34.9	2	66.7	15.9	4	0.7
20	115	14.3	48	26	11	42.9	2	82.6	19	4	1.2
25	125	15.9	54	27	13	50.8	2	88.9	19	4	1.4
32	135	17.5	64	27	14	63.5	2	98.4	19	4	1.9
40	155	19.1	70	31	16	73	2	114.3	22.2	4	2.8
50	165	20.7	84	34	17	92.1	2	127	19	8	3.3
65	190	23.9	100	39	19	104.8	2	149.2	22.2	8	4.6
80	210	27	117	43	21	127	2	168.3	22.2	8	6.3
90	230	28.6	133	45	22	139.7	2	184.2	22.2	8	not listed
100	255	30.2	146	48	24	157.2	2	200	22.2	8	not listed
125	280	33.4	178	51	24	185.7	2	235	22.2	8	not listed
150	320	35	206	53	27	215.9	2	269.9	22.2	12	not listed	In the viewer
200	380	39.7	260	62	32	269.9	2	330.2	25.4	12	not listed
250	445	46.1	321	67	33	323.8	2	387.4	28.6	16	not listed
300	520	49.3	375	73	40	381	2	450.8	31.7	16	not listed
350	585	52.4	425	77	41	412.8	2	514.4	31.7	20	not listed
400	650	55.6	483	83	44	469.9	2	571.5	34.9	20	not listed
450	710	58.8	533	89	49	533.4	2	628.6	34.9	24	not listed
500	775	62	587	96	54	584.2	2	685.8	34.9	24	not listed
600	915	68.3	702	107	64	692.2	2	812.8	41.3	24	not listed

Dimensions in mm, for reference. Tolerances and full requirements as per the applicable standard. Confirm against your specification before ordering.

Source: Shiv Shakti Machine Tools Flange Catalogue, edition 2026 (draft), page 9, weights page 15. “–” means the catalogue lists no value.

[CONFIRM: table checked and signed off by the owners (unverified)][CONFIRM: whether the flange thickness includes the raised face]