Blind Flanges Manufacturer, BLRF Flanges Suppliers

ANSI b16.5 blind flange

Carbon steel blind flange, ASME b16.5 class 150 blind flange price list

RTJ blind flange, Stainless Steel Blind Flanges supplier at best price in India

ANSI B16.5 Blind Flanges

ANSI B16.5 Blind Flanges

Stainless steel Blind Flanges

Stainless steel Blind Flanges

Carbon steel Blind Flanges

Carbon steel Blind Flanges

Dinesh Industries is a specialised manufacturer of high quality ASME/ANSI/DIN industrial blind flanges in India. We offer immediate delivery programs for standard size of carbon steel blind flanges and stainless steel blind flanges. Plate blind flanges manufactured in special stainless steel grades, nickel alloy and alloy steel can be supplied with just in time programs.

Commonly referred as blanking flanges, Blind pipe flanges are widely used in high pressure applications. Blind flanges are generally used to seal the end of a piping system to prevent flow of liquids or gases. The use of blind flanges allows ease of access to a piping system once it has been closed.Our blind flanges are available with raised or RTJ faces and also with female threads. Blind flanges can be supplied with or without hub as per the customer requirements.

Blind flange specification

Type Blind Flanges, BL Flanges, ASME 16.5 Blind Flanges / BLRF Flanges
Size ½” (15 NB) to 48″ (1200NB)
Pressure Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Material Stainless Steel Blind Flanges: ASTM A182 F202, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 316LN, 310S, 317L, 321, 410, 420, 440C, 202. F904L

Carbon Steel Blind Flanges: ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70

Duplex Steel Blind Flanges: ASTM / ASME SA 182 F 44 , F 45 , F51 , F 53 , F 55 , F 60 , F 61.

Alloy Steel Blind Flanges: ASTM A182 F1, F5, F9, F11, F22, F91

Special Alloy Blind Flanges: Duplex, Super Duplex, Nickel Alloys

Nickel Alloy Blind Flanges: Cupro Nickel (90/10, 70/30, 66/30/2/2), Hastelloy (C-4, C-22, C276, B-2), Nickel (200 / 201 / 205), Monel 400 & K500), Inconel (600, 601, 625 & 825), Incolloy (800, 800H), Alloy 20, Duplex Steel, SS 904L, Titanium (1 & 2) Etc.

Specialize As per drawing
Standard ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278, DIN
Connection Type Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female, Large Tongue & Groove, Small Tongue & Groove.
Flanges Forms Blind Raise Face -BLRF, Weld Neck Flanges – WNRF, Socket Weld Flanges – SWRF, Slip On Raise Face – SORF, Spectacle Blind, Ring Joint, Large Dia Flanges, Orifice Flanges, Girth Flange, Lap Joint Flanges, Screwed (Threaded) Flanges, Long Weld Neck Flanges, Reducing.

 

Blind flange ansi b16 5 material:

Dimensions Base Material Pressure Rating
ASME B16.5 ASTM A182 (Forgings) ASTM A240 (Plate) 150#. 300#. 400#. 600#. 900#. 1500#. 2500#.
API 605 ASTM A182 (Forgings) ASTM A240 (Plate) 150#. 300#. 400#. 600#. 900#. 1500#. 2500#.
ASME B16.47series A & B ASTM A182 (Forgings) ASTM A240 (Plate) 150#. 300#. 400#. 600#. 900#. 1500#. 2500#.
EN1092-1 ASTM A182 (Forgings) PN2.5. PN6. PN10. PN16. PN25. PN40. PN63. PN100. PN160. PN250. PN320. PN400.
BS4504 BS970 (Bar)ASTM A240 (Plate) ASTM A182 (Forgings) PN2.5. PN6. PN10. PN16. PN25. PN40. PN63. PN100. PN160.
BS10 BS970 (Bar)ASTM A240 (Plate) ASTM A182 (Forgings)

Typical Stainless Steel 18/8 Grade Designations:

ASTM
BS
DIN
EURONORM
304
304S15
X5 Cr Ni 18 10
1.4301
304L
304S11
X2 Cr Ni 18 9
1.4307
316
316S31
X5 Cr Ni Mo 17 12 2
1.4401
316L
316S11
X2 Cr Ni Mo 17 13 2
1.4404
321
321S31
X6 Cr Ni 18 10
1.4541
316Ti
320S31
X6 Cr Ni Mo Ti 17 12 2
1.4571
SMO
254SMO
X1 Cr Ni Mo Cu N 20 18 7
1.4547

Technical Information – Specifications, Dimensions Blind Flanges

ANSI ASME B16.48 Spectacle Blind flange Dimensions

  • ANSI ASME B16.48 Class 150 Spectacle Blind Flange
  • ANSI ASME B16.48 Class 300 Spectacle Blind Flange
  • ANSI ASME B16.48 Class 600 Spectacle Blind Flange
  • ANSI ASME B16.48 Class 900 Spectacle Blind Flange
  • ANSI ASME B16.48 Class 1500 Spectacle Blind Flange
  • ANSI ASME B16.48 Class 2500 Spectacle Blind Flange

ANSI ASME B16.5 Blind flange Dimensions

  • ANSI ASME B16.5 Class 150 Blind Flanges
  • ANSI ASME B16.5 Class 300 Blind Flanges
  • ANSI ASME B16.5 Class 400 Blind Flanges
  • ANSI ASME B16.5 Class 600 Blind Flanges
  • ANSI ASME B16.5 Class 900 Blind Flanges
  • ANSI ASME B16.5 Class 1500 Blind Flanges
  • ANSI ASME B16.5 Class 2500 Blind Flanges
API 6A Type 6B WN & BL flange Dimensions

  • API 6A Type 6B 2000 PSI Weld Neck & Blind Flange
  • API 6A Type 6B 3000 PSI Weld Neck & Blind Flange
  • API 6A Type 6B 5000 PSI Weld Neck & Blind Flange

EN1092-1 Blind flange Type 05 Dimensions

  • EN1092-1 PN6 Blind flange Type 05
  • EN1092-1 PN10 Blind flange Type 05
  • EN1092-1 PN16 Blind flange Type 05

 

DIN2527 Blind flange Dimensions

  • DIN2527 PN6 Blind flange
  • DIN2527 PN10 Blind flange
  • DIN2527 PN16 Blind flange
  • DIN2527 PN25 Blind flange
  • DIN2527 PN40 Blind flange
  • DIN2527 PN64 Blind flange
  • DIN2527 PN100 Blind flange
API 6A Type 6BX WN & BL flange Dimensions

  • API 6A Type 6BX 2000 PSI Blind Flange
  • API 6A Type 6BX 3000 PSI Blind Flange
  • API 6A Type 6BX 5000 PSI Blind Flange
  • API 6A Type 6BX 10000 PSI Blind & Weld Neck Flanges
  • API 6A Type 6BX 15000 PSI Blind & Weld Neck Flanges
  • API 6A Type 6BX 20000 PSI Blind & Weld Neck Flanges
AWWA C207 SO & BL flange Dimensions

  • Table 2 AWWA C207 Class B Ring & Blind Flange
  • Table 2 AWWA C207 Class D Ring & Blind Flange
  • Table 3 AWWA C207 Class D Hub Flanges
  • Table 4 AWWA C207 Class E Hub Flanges
  • Table 5 AWWA C207 Class E Ring & Blind Flange
  • Table 6 AWWA C207 Class F Ring & Blind Flange

Blind flange dimensions

Dimension of Blind Flanges
Class 150 300 400 600 900 1500 2500
Diameter – D 90 95 95 95 120 120 135
Height – B 9.6 12.7 14.3 14.3 22.3 22.3 30.2
11.2 14.3 20.7 20.7 28.7 28.7 36.6
Diameter – G 35.1 35.1 35.1 35.1 35.1 35.1 35.1
Diameter – K 60.3 66.7 66.7 66.7 82.6 82.6 88.9
Bolt Holes 4 4 4 4 4 4 4
Diameter – L 15.9 15.9 15.9 15.9 22.2 22.2 22.2
Stud Bolts Diameter x Length
Diameter (in) 1/2 1/2 1/2 1/2 3/4 3/4 3/4
Length (mm) 55 65 75 75 110 110 120

 

Blind flange weight / Blind flange standard 

Pipe Normal Diam.
O.D. Flange
Thk. Of Flange Min
Diameter of Raised Face
Diam.of BoltCircle
Diam.of BoltHoles
Numberof Bolts
Diam. ofBolts(inch)
KG
LB
inch
dn
O
C
G
BC
BH
BN
BD
1/2″
15
89.00
11.20
35.10
60.50
15.80
4
1/2″
0.5
1.1
3/4″
20
98.50
12.70
42.90
69.90
15.80
4
1/2″
0.8
1.8
1″
25
108.00
14.20
50.80
79.30
15.80
4
1/2″
0.9
2
1-1/4″
32
117.50
15.70
63.50
88.90
15.80
4
1/2″
1.3
2.9
1-1/2″
40
127.00
17.50
73.20
98.60
15.80
4
1/2″
1.6
3.5
2″
50
152.50
19.10
91.90
120.70
19.10
4
5/8″
2.6
5.7
2-1/2″
65
178.00
22.40
104.60
139.70
19.10
4
5/8″
4.1
9
3″
80
190.50
23.90
127.00
152.40
19.10
4
5/8″
5..1
11.2
3-1/2″
90
216.00
23.90
139.70
177.80
19.10
8
5/8″
6.5
14.3
4″
100
228.50
23.90
157.20
190.50
19.10
8
5/8″
7.5
16.5
5″
125
254.00
23.90
185.70
215.90
22.40
8
3/4″
9.2
20.3
6″
150
279.50
25.40
215.90
241.30
22.40
8
3/4″
11.8
26
8″
200
343.00
28.40
269.70
298.50
22.40
8
3/4″
20.4
45
10″
250
406.50
30.20
323.90
362.00
25.40
12
7/8″
31
68
12″
300
482.50
31.80
381.00
431.80
25.40
12
7/8″
47
103
14″
350
533.50
35.10
412.80
476.30
28.50
12
1″
60
132
16″
400
597.00
36.60
469.90
539.80
28.50
16
1″
81
178
18″
450
635.00
39.60
533.40
577.90
31.80
16
1 1/8″
93
205
20″
500
698.50
42.90
584.20
635.00
31.80
20
1 1/8″
127
280
24″
600
813.00
47.80
692.20
749.30
35.10
20
1 1/4″
190
419

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

300 lb blind flange dimensions

Pipe Normal Diam.
O.D. Flange
Thk. Of Flange Min
Diameter of Raised Face
Diam.of BoltCircle
Diam.of BoltHoles
Numberof Bolts
Diam. ofBolts(inch)
Approx. Weight
inch
dn
O
C
G
BC
BH
BN
BD
KG/PCS
LB/PCS
1/2″
15
95.5
14.2
35.1
66.5
15.7
4
1/2″
0.8
1.8
3/4″
20
117. 5
15.7
42.9
82.6
19.1
4
5/8″
1.2
2.6
1″
25
124. 0
17.5
50.8
88.9
19.1
4
5/8″
1.5
3.3
1-1/4″
32
133. 5
19.1
63.5
98.6
19.1
4
5/8″
2
4.4
1-1/2″
40
155. 5
20.6
73.2
114.3
22.4
4
5/8″
2.9
6.4
2″
50
165. 0
22.4
91.9
127
19.1
8
5/8″
3.5
7.7
2-1/2″
65
190. 5
25.4
104.6
149.4
22.4
8
3/4″
5.3
11.7
3″
80
209. 5
28.4
127
168.1
22.4
8
3/4″
7.2
15.9
3-1/2″
90
228. 5
30.2
139.7
184.2
22.4
8
3/4″
9.2
20.3
4″
100
254. 0
31.8
157.2
200.2
22.4
8
3/4″
12.2
26.8
5″
125
279. 5
35.1
185.7
235
22.4
8
3/4″
16
35.2
6″
150
317. 5
36.6
215.9
269.7
22.4
12
3/4″
22
48.4
8″
200
381. 0
41.1
269.7
330.2
25.4
12
7/8″
36
79.5
10″
250
444. 5
47.8
323.9
387.4
28.4
16
1″
55
121
12″
300
520. 5
50.8
381
450.9
31.8
16
1 1/8″
82.5
182
14″
350
584. 0
53.8
412.8
514..4
31.8
20
1 1/8″
108
238
16″
400
647. 5
57.2
469.9
571.5
35.1
20
1 1/4″
139
306
18″
450
711. 0
60.5
533.4
628.7
35.1
24
1 1/4″
178
392
20″
500
774. 5
63.5
584.2
685.8
35.1
24
1 1/4″
228
503
24″
600
914. 5
69.9
692.2
812.8
41.1
24
1 1/2″
350
772

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

600# blind flange dimensions:

Pipe Normal Diam.
O.D. Flange
Thk. Of Flange Min
Diameter of Raised Face
Diam.of BoltCircle
Diam.of BoltHoles
Numberof Bolts
Diam. ofBolts(inch)
Approx. Weight
inch
dn
O
C
G
BC
BH
BN
BD
KG/PCS
LB/PCS
1/2″
15
95.5
14.2
35.1
66.5
15.7
4
1/2″
0.8
1.8
3/4″
20
117. 5
15.7
42.9
82.6
19.1
4
5/8″
1.4
3.1
1″
25
124. 0
17.5
50.8
88.9
19.1
4
5/8″
1.7
3.7
1-1/4″
32
133. 5
20.6
63.5
98.6
19.1
4
5/8″
2.4
5.3
1-1/2″
40
155. 5
22.4
73.2
114.3
22.4
4
3/4″
3.4
7.5
2″
50
165. 0
25.4
91.9
127
19.1
8
5/8″
4.4
9.7
2-1/2″
65
190. 5
28.4
104.6
149.4
22.4
8
3/4″
6.8
15
3″
80
209. 5
31.8
127
168.1
22.4
8
3/4″
8.9
19.7
3-1/2″
90
228. 5
35.1
139.7
184.2
25.4
8
7/8″
12.7
28
4″
100
273. 0
38.1
157.2
215.9
25.4
8
7/8″
18.6
41
5″
125
330. 0
44.5
185.7
266.7
28.4
8
1″
30.8
68
6″
150
355. 5
47.8
215.9
292.1
28.4
12
1″
38
83.6
8″
200
419. 0
55.6
269.7
349.3
31.8
12
1 1/8″
62.2
137
10″
250
508. 0
63.5
323.9
431.8
35.1
16
1 1/4″
102
225
12″
300
559. 0
66.5
381
489
35.1
20
1 1/4″
132
291
14″
350
603. 5
69.9
412.8
527.1
38.1
20
1 3/8″
158
348
16″
400
686. 0
76.2
469.9
603.3
41.1
20
1 1/2″
225
496
18″
450
743. 0
82.6
533.4
654.1
44.5
20
1 5/8″
285
628
20″
500
813. 0
88.9
584.2
723.9
44.5
24
1 5/8″
365
805
24″
600
940. 0
101.6
692.2
838.2
50.8
24
1 7/8″
532
1170

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

1500 blind flange dimensions:

Pipe Normal Diam.
O.D. Flange
Thk. Of Flange Min
Diam.ofHub
Diam.of BoltCircle
Diam.of BoltHoles
Numberof Bolts
Diam. of Bolts(inch)
Approx. Weight
inch
dn
O
C
X
BC
BH
BN
BD
KG/PCS
LB/PCS
1/2″
15
120.7
22.4
38.1
82.6
22.4
4
3/4″
1.9
4.2
3/4″
20
130
25.4
44.5
88.9
22.4
4
3/4″
2.7
6
1″
25
149.4
28.4
52.3
101.6
25.4
4
7/8″
3.7
8.1
1-1/4″
32
158.8
28.4
63.5
111.3
25.4
4
7/8″
4.3
9.5
1-1/2″
40
177.8
31.8
69.9
124
28.4
4
1″
5.9
13
2″
50
215.9
38.1
104.6
165.1
25.4
8
7/8″
11.3
24.9
2-1/2″
65
244.3
41.1
124
190.5
28.4
8
1″
16
35.2
3″
80
266.7
47.8
133.4
190.5
25.4
8
7/8″
19.5
43
4″
100
311.2
53.8
162.1
235
31.8
8
1 1/8″
33
72.8
5″
125
374.7
73.2
196.9
279.4
35.1
8
1 1/4″
60
132
6″
150
393.7
82.6
228.6
317.5
31.8
12
1 1/8″
75
165
8″
200
482.6
91.9
292.1
393.7
38.1
12
1 3/8″
125
275
10″
250
584.2
108
368.3
469.9
38.1
16
1 3/8″
215
474
12″
300
673.1
124
450.9
533.4
38.1
20
1 3/8″
316
697
14″
350
749.3
133.4
495.3
558.8
41.1
20
1 1/2″
16″
400
825.5
146.1
552.5
616
44.5
20
1 5/8″
18″
450
914.4
162.1
596.9
685.8
50.8
20
1 7/8″
20″
500
984.3
177.8
641.4
749.3
53.8
20
2″
24″
600
1168.4
203.2
762
901.7
66.5
20
2 1/2″

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

2500 lb blind flange dimensions:

Pipe Normal Diam.
O.D. Flange
Thk. Of Flange Min
Diam.of BoltCircle
Diam.of BoltHoles
Numberof Bolts
Diam. ofBolts(inch)
KG
LB
inch
dn
O
C
BC
BH
BN
BD
1/2″
15
133.4
30.2
88.9
22.4
4
3/4″
3
7
3/4″
20
139.7
31.8
95.3
22.4
4
3/4″
4.5
10
1″
25
158.8
35.1
108
25.4
4
7/8″
5
12
1-1/4″
32
184.2
38.1
130
28.4
4
1″
8
18
1-1/2″
40
203.2
44.5
146.1
31.8
4
1 1/8″
11
25
2″
50
235
50.8
171.5
28.4
8
1″
17
38
2-1/2″
65
266.7
57.2
196.9
31.8
8
1 1/8″
25
55
3″
80
304.8
66.5
228.6
35.1
8
1 1/4″
39
86
4″
100
355.6
76.2
273.1
41.1
8
1 1/2″
60
133
5″
125
419.1
91.9
323.9
47.8
8
1 3/4″
101
223
6″
150
482.6
108
368.3
53.8
8
2″
156
345
8″
200
552.5
127
438.2
53.8
12
2″
242
533
10″
250
673.1
165.1
539.8
66.5
12
2 1/2″
465
1023
12″
300
762
184.2
619.3
73.2
12
2 3/4″
665
1463

Note: 1) Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

Blind flange tolerances

Outside Diameter ≤ 24 = 1.6 mm | > 24 = ± 3.2 mm Inside Diameter not applicable
Diameter of Contact Face 1.6 mm Raised Face = ± 0.8 mm6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm Outside Diameter of Hub ≤ 12 = + 2.4 mm / – 1.6 mm | ≥ 14 = ± 3.2 mm
Diameter of Counterbore not applicable Drilling Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mmEccentricity of Bolt Circle with Respect to Facing≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Thickness ≤ 18 = + 3.2 mm / – 0 | ≥ 20 = + 4.8 mm / – 0 Length thru Hub ≤ 18 = + 3.2 mm / – 0.8 mm | ≥ 20 = + 4.8 mm / – 1.6 mm

 

ANSI/ASME Blind flanges

EN/DIN Blind flange

  • DIN2573, DIN2576 carbon steel plate flanges
  • DIN2527 blind flanges
  • DIN2573, DIN2576 plate flange, backing flange,gasket
  • EN1092-1 F304/F304L plate flange
  • DIN2634 steel weld neck flanges

BS 3293 blind flange

JIS blind flange

Flange Standard

Ready stock of blind flange class 150, SS blind flange as per client requirement

Stockholder of blind flange raised face, flat face blind flange in Mumbai, Maharashtra
Check Raised Faced Blind Flanges, BLRF flange dimensions, blind flange rating

 

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