ASME / ANSI B16.5 Blind (Bl) Pipe Flanges Manufacturer In India

Alloy Steel, Carbon Steel Slip-On (SO) Flange

ASME B16.5 Blind Flange

 

Specification Format of ASME B16.5 Blind Flange

Size  1/2″ (15 NB) to 48″ (1200NB)
Standards  ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings.
Pressure Ratings PN6, PN10, PN16, PN25, PN40, PN64 etc.
Pressure class  150#, 300#, 600#, 1500#
Dimensions and Pressure Ratings for Blind Flanges Table D, E, F, & H, MSS- SP-44, BS3293, ANSI, BS4504, PN6, 10, 16, 25, 64 BS10, DIN Standards
Flange Face Type Raised Face (RF), Flate Face (FF), Ring Type Joint (RTJ)
Coating/Surface Treatment Yellow Transparent, Anti-rust Paint, Oil Black Paint, Zinc Plated, Cold and Hot Dip Galvanized.

Dimensions of Class 300 Blind Flange

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

Tolerances Of Carbon Steel Blind Flange

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

Material of Blind Flange

Carbon Steel Blind Flanges: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8

Stainless Steel Blind Flanges: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L

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

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