GOST 12821 welding neck flange dimensions PN63 6.3Mpa

Author : admin

Update time : 2026-10-20 08:48:39

GOST 12821 welding neck flange dimensions PN63 6.3Mpa

　　The GOST Standard Flanges is a flange that can range from the DIN15 to DIN1600. The GOST Flanges is used in offshore oil industries, oil fields, natural gas industries, and water systems. GOST 12821 80 flange is in different types such as the weld neck, butt weld, blind flanges, and slip-on. GOST 12821 Stainless Steel Flanges range also can be Customized as Per the needs of our clients. Shengtian Group provides a complete range of GOST 12821-80 Flanges, GOST Blind Flanges in Stock in various sizes.

Dn, мм	D, мм	D1, мм	d, мм	Dm, мм	Dn, мм	d1, мм	b, мм	h4, мм	n-￠	кg
15	105	75	14	38	19	12	16	46	4	1,15
20	125	90	18	48	26	18	18	54	4	1,80
25	135	100	18	52	33	25	20	56	4	2,30
32	150	110	22	64	39	31	21	60	4	2,94
40	165	125	22	74	46	37	21	65	4	3,75
50	175	135	22	86	58	47	23	67	4	4,63
65	200	160	22	106	77	64	25	72	8	6,29
80	210	170	22	120	90	77	27	72	8	7,22
100	250	200	26	140	110	94	29	77	8	10,71
125	295	240	30	172	135	118	33	95	8	17,13
150	340	280	33	206	161	142	35	105	8	24,60
200	405	345	33	264	222	198	41	110	12	36,60
250	470	400	39	316	278	246	45	115	12	50,89
300	530	460	39	370	330	294	50	120	16	68,15
350	595	525	39	430	382	342	56	140	16	98,68
400	670	585	45	484	432	386	62	155	16	135,80
500	800	705	52	594	535	485	66	165	20	192,74
600	925	820	56	704	636	585	71	180	20	269,27
800	1165	1050	62	920	826	785	85	225	24	463,87
1000	1415	1290	70	1160	1028	985	92	280	28	980,60
1200	1 665	1 530	78	1386	1 228	1185	95	315	32	1 263,72

Previous : GOST 12821 welding neck flange dimensions PN100 10Mpa

Next : GOST 12821 welding neck flange dimensions PN40 4.0Mpa

GOST 12821 welding neck flange dimensions PN100 10Mpa

Oct .22.2026

GOST 12821 Weld Neck Flanges – Supplied by Shengtian Group. Shengtian Group offers high-quality GOST 12821 Weld Neck Flanges , manufactured in compliance with Russian standards, designed to provide robust, reliable connections in high-pressure and high-temperature applications.

GOST 12821 welding neck flange dimensions PN40 4.0Mpa

Oct .15.2026

We proudly offer a comprehensive range of GOST 12821 welding neck flanges, engineered to withstand high-pressure environments up to PN40 (4.0 MPa).

GOST 12821 welding neck flange dimensions PN25 2.5Mpa

Oct .13.2026

GOST 12821 welding neck flange belongs to the Russian standard flange system. It is one of the manifestations of Russian standard flange (also known as GOST flange), and it is a common flange on equipment or pipeline.

GOST 12821 welding neck flange dimensions PN16 1.6Mpa

Oct .08.2026

GOST flanges are typically made of carbon steel, stainless steel, or alloy steel, and are designed to withstand high pressure and temperature conditions.