F316 1/2”Raised Face (RF) Blind Flange (BL) Stainless Steel 150-2500# HG/T20622 ASME A182

Pressure Ratings:

150 lbs

300 lbs

600 lbs

900 lbs

1500 lbs

2500 lbs

NPS:

1/2 "

3/4"

1"

1-1/4"

1-1/2"

2"

2-1/2 "

3"

4"

5"

6"

8"

10"

12"

14"

16"

18"

20"

24"

Material：:

304

304L

316

316L

Quantity:

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HG/T20622 Blind Flange (BL)

Standard: HG/T20622
Material Standard: ASME A182
Manufacturing Facility Standard: ISO 9001:2015 , GB/T19001-2016
Certification: Material Test Reports (MTRS) and Certificates of Conformity (COC) are available upon request.

stainless blind flange

Dimensions & Sizes

DN	NPS	D	K	L	n	Th	C
15	1/2	90	60.3	16	4	M14	9.6

20	3/4	100	69.9	16	4	M14	11.2

25	1	110	79.4	16	4	M14	12.7

32	1-1/4	115	88.9	16	4	M14	14.3

40	1-1/2	125	98.4	16	4	M14	15.9

50	2	150	120.7	18	4	M16	17.5

65	2-1/2	180	139.7	18	4	M16	20.7

80	3	190	152.4	18	4	M16	22.3

100	4	230	190.5	18	8	M16	22.3

125	5	255	215.9	22	8	M20	22.3

150	6	280	241.3	22	8	M20	23.9

200	8	345	298.58	22	8	M20	27.0

250	10	405	362.0	26	12	M24	28.6

300	12	485	431.8	26	12	M24	30.2

350	14	535	476.3	30	12	M27	33.4

400	16	595	539.8	30	16	M27	35.0
450	18	635	577.9	33	16	M30	38.1

500	20	700	635.0	33	20	M30	41.3

600	24	815	749.3	36	20	M33	46.1

Class150(PN20) (mm)

DN	NPS	D	K	L	n	Th	C
15	1/2	95	66.7	16	4	M14	12.7
20	3/4	115	82.6	18	4	M16	14.3
25	1	125	88.9	18	4	M16	15.9
32	1-1/4	135	98.4	18	4	M16	17.5
40	1-1/2	155	114.3	22	4	M20	19.1
50	2	165	127.0	18	8	M16	20.7
65	2-1/2	190	149.2	22	8	M20	23.9
80	3	210	168.3	22	8	M20	27.0
100	4	255	200.0	22	8	M20	30.2
125	5	280	235.0	22	8	M20	33.4
150	6	320	269.9	22	12	M20	35.0
200	8	380	330.2	26	12	M24	39.7
250	10	445	387.4	30	16	M27	46.1
300	12	520	450.8	33	16	M30	49.3
350	14	585	514.4	33	20	M30	52.4
350	14	585	514.4	33	20	M30	52.4
400	16	650	571.5	36	20	M33	55.6
400	16	650	571.5	36	20	M33	55.6
450	18	710	628.6	36	24	M33	58.8
450	18	710	628.6	36	24	M33	58.8
500	20	775	685.8	36	24	M33	62.0
600	24	915	812.8	42	24	M39X3	68.3
Class300(PN50) (mm)

DN	NPS	D	K	L	n	Th	C
15	1/2	95	66.7	16	4	M14	14.3
20	3/4	115	82.6	18	4	M16	15.9
25	1	125	88.9	18	4	M16	17.5

32	1-1/4	135	98.4	18	4	M16	20.7

40	1-1/2	155	114.3	22	4	M20	22.3

50	2	165	127.0	18	8	M16	25.4
65	2-1/2	190	149.2	22	8	M20	28.6
80	3	210	168.3	22	8	M20	31.8

100	4	275	215.9	26	8	M24	38.1

125	5	330	266.7	30	8	M27	44.5
150	6	355	292.1	30	12	M27	47.7
200	8	420	349.2	33	12	M30	55.6

250	10	510	431.8	36	16	M33	63.5

300	12	560	489.0	36	20	M33	66.7
350	14	605	527.0	39	20	M36X3	69.9
400	16	685	603.2	42	20	M39X3	76.2
450	18	745	654.0	45	20	M42X3	82.6

500	20	815	723.9	45	24	M42X3	88.9

600	24	940	838.2	51	24	M48X3	101.6
Class600(PN110) (mm)

DN	NPS	D	K	L	n	Th	C
15	1/2	120	82.6	22	4	M20	22.3
20	3/4	130	88.9	22	4	M20	25.4

25	1	150	101.6	26	4	M24	28.6

32	1-1/4	160	111.1	26	4	M24	28.6
40	1-1/2	180	123.8	30	4	M27	31.8
50	2	215	165.1	26	8	M24	38.1

65	2-1/2	245	190.5	30	8	M27	41.3
80	3	240	190.5	26	8	M24	38.1
100	4	290	235.0	33	8	M30	44.5
125	5	350	279.4	36	8	M33	50.8

150	6	380	317.5	33	12	M30	55.6
200	8	470	393.7	39	12	M36X3	63.5
250	10	545	469.9	39	16	M36X3	69.9

300	12	610	533.4	39	20	M36X3	79.4

350	14	640	558.8	42	20	M39X3	85.8
400	16	705	616.0	45	20	M42X3	88.9
450	18	785	685.8	51	20	M48X3	101.6
500	20	855	749.3	55	20	M52X3	108.0

600	24	1040	901.7	68	20	M64X3	139.7
Class900(PN150) (mm)

DN	NPS	D	K	L	n	Th	C
15	1/2	120	82.6	22	4	M20	22.3
20	3/4	130	88.9	22	4	M20	25.4
25	1	150	101.6	26	4	M24	28.6
32	1-1/4	160	111.1	26	4	M24	28.6
40	1-1/2	180	123.8	30	4	M27	31.8
50	2	215	165.1	26	8	M24	38.1
65	2-1/2	245	190.5	30	8	M27	41.3
80	3	265	203.2	33	8	M30	47.7
100	4	310	241.3	36	8	M33	54.0
125	5	375	292.1	42	8	M39X3	73.1
150	6	395	317.5	39	12	M36X3	82.6
200	8	485	393.7	45	12	M42X3	92.1
250	10	585	482.6	51	12	M48X3	108.0
300	12	675	571.5	55	16	M52X3	123.9
350	14	750	635.0	60	16	M56X3	133.4
400	16	825	704.8	68	16	M64X3	146.1
450	18	915	774.7	74	16	M70X3	162.0
500	20	985	831.8	80	16	M76X3	177.8
600	24	1170	990.6	94	16	M90X3	203.2
Class1500(PN260) (mm)

DN	NPS	D	K	L	n	Th	C
15	1/2	135	88.9	22	4	M20	30.2

20	3/4	140	95.2	22	4	M20	31.8

25	1	160	108.0	26	4	M24	35.0

32	1-1/4	185	130.2	30	4	M27	38.1

40	1-1/2	205	146.0	33	4	M30	44.5

50	2	235	171.4	30	8	M27	50.9
65	2-1/2	265	196.8	33	8	M30	57.2

80	3	305	228.6	36	8	M33	66.7

100	4	355	273.0	42	8	M39X3	76.2

125	5	420	323.8	48	8	M45X3	92.1

150	6	485	368.3	55	8	M52X3	108.0

200	8	550	438.2	55	12	M52X3	127.0
250	10	675	539.8	68	12	M64X3	165.1

300	12	760	619.1	74	12	M70X3	184.2

Class2500(PN420) (mm)

Dimensions of the sealing face for Raised Face (RF) flanges

stainless blind flange

DN	NPS	d	≤Class300 (PN50)f1	≥Class600 (PN110)f2
15	1/2	34.9	2	7
20	3/4	42.9
25	1	50.8
32	1-1/4	63.5
40	1-1/2	73.0
50	2	92.1
65	2-1/2	104.8
80	3	127.0
100	4	157.2
125	5	185.7
150	6	215.9
200	8	269.9
250	10	323.8
300	12	381.0
350	14	412.8
400	16	469.9
450	18	533.4
500	20	584.2
600	24	692.2

This precision stainless blind flange provides reliable pipeline termination for small-bore industrial systems. Manufactured from corrosion-resistant F316 stainless steel according to HG/T20622 and ASME A182 standards, this durable blind pipe flange ensures superior pressure containment across ratings from 150 to 2500#. The raised face design of this compact stainless blind flange guarantees optimal gasket compression and leak-proof performance. Ideal for chemical processing, petroleum, and high-corrosion applications, this essential blind pipe flange facilitates system maintenance and inspection access. The robust construction of this reliable stainless blind flange delivers long-term performance in demanding environments. This high-quality blind pipe flange ensures safe pressure isolation where system integrity and reliable sealing are critical requirements in compact piping arrangements.

Production Process:

stainless blind flange

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