Forged Blind Flange Manufacturer Changrun Supplies Forged BL Flanges,
Dimension: 8 Inch (DN200)
Class rating: 300lb
Flange face: RF, FF, RTJ, TF, GF.
Certificates: CE, ISO, PED, TS, BV, CQC.
Forged Blind Flange
A blind flange (also called a ‘closure plate flange’) is installed at the end of a piping system to terminate a pipe. It has no centre hole (bore), so there is no flow through the flange. A blind flange may be used for isolating a pipe, valve, or pressure vessel. This type of flange is available in all sizes and classes, and may use a flat, raised, or ring-type joint face
ASME B16.5 Class 300
RF Blind Flange
| Nominal Pipe Size |
OD of Flange (D) |
Thickness of Flange (B) |
Dia of Raised Face (G) |
No of Bolt Holes |
Dia of Bolt Holes (L) |
Dia of Bolt (inches) |
Dia of Bolt Circle (K) |
Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 95.3 | 14.2 | 35.1 | 4 | 15.7 | 1/2 | 66.5 | 1 |
| 3/4 | 117.3 | 15.7 | 42.9 | 4 | 19.1 | 1/2 | 82.6 | 1 |
| 1 | 124 | 17.5 | 50.8 | 4 | 19.1 | 1/2 | 88.9 | 1 |
| 1-1/4 | 133.4 | 19.1 | 63.5 | 4 | 19.1 | 1/2 | 98.6 | 2 |
| 1-1/2 | 155.4 | 20.6 | 73.2 | 4 | 22.4 | 1/2 | 114.3 | 3 |
| 2 | 165.1 | 22.4 | 91.9 | 8 | 19.1 | 5/8 | 127 | 4 |
| 2-1/2 | 190.5 | 25.4 | 104.6 | 8 | 22.4 | 5/8 | 149.4 | 5 |
| 3 | 209.6 | 28.4 | 127 | 8 | 22.4 | 5/8 | 168.1 | 7 |
| 3-1/2 | 228.6 | 30.2 | 139.7 | 8 | 22.4 | 5/8 | 184.2 | 10 |
| 4 | 254 | 31.8 | 157.2 | 8 | 22.4 | 5/8 | 200.2 | 12 |
| 5 | 279.4 | 35.1 | 185.7 | 8 | 22.4 | 5/8 | 235 | 16 |
| 6 | 317.5 | 36.6 | 215.9 | 12 | 22.4 | 3/4 | 269.7 | 23 |
| 8 | 381 | 41.1 | 269.7 | 12 | 25.4 | 3/4 | 330.2 | 37 |
| 10 | 444.5 | 47.8 | 323.9 | 16 | 28.4 | 1 | 387.4 | 56 |
| 12 | 520.7 | 50.8 | 381 | 16 | 31.8 | 1-1/8 | 450.9 | 84 |
| 14 | 584.2 | 53.8 | 412.8 | 20 | 31.8 | 1-1/8 | 514.4 | 113 |
| 16 | 647.7 | 57.2 | 469.9 | 20 | 35.1 | 1-1/4 | 571.5 | 134 |
| 18 | 711.2 | 60.5 | 533.4 | 24 | 35.1 | 1-1/4 | 628.7 | 179 |
| 20 | 774.7 | 63.5 | 584.2 | 24 | 35.1 | 1-1/4 | 685.8 | 229 |
| 24 | 914.4 | 69.9 | 692.2 | 24 | 41.1 | 1-1/2 | 812.8 | 358 |
Wuxi Changrun manufactures forged flanges and various forgings for various boilers and pressure vessels according to international and national standards (ASME, ASNI, DIN, GB, JB/T, SH, HG, DG, etc.) with various materials (carbon steel, alloy steel including steel used for high-temperature and low-temperature, stainless steel including duplex steel and etc.). The products are widely used in petroleum & chemical industry, electric industry (nuclear power, wind electricity, thermal power), light manufacturing, machinery, metallurgy, ship craft and etc.
The company has equipped facilities for manufacturing. Now it has five forging machines, one of which is forging machine whose capacity reaches 3600-ton, one is numerical control ring roll whose capacity reaches 6300 mm (Diameter), one is 1.5 ton hammers and the other two are 1-ton air hammers. There are 7 gas generators used for forge heating, 16 industrial resistance furnaces for heat treatment and more than 80 metal processing equipment among which there is a numeric control Standing Lathe whose processing diameter can reach 5meters. The company has an annual production capacity of 50,000 tons of middle and high-pressure flanges and various steel forgings for boilers and pressure vessels. The maximum pressure of manufactured flanges can reach 2500Lb, the maximum diameter can reach about 6 meters and the maximum weight of unit forging can reach 30 tons.
Specification:
Size Range: DN15-DN2000, 1/2 Inch-80 Inch
Face Finish: RF, FF, RTJ, TF, GF
Standard & Pressure Ratings:
1. ANSI/ASME/ASTM B16.5/B16,47: 150 LB, 300 LB, 600 LB, 900 LB, 1500 LB, 2500 LB
2. DIN/UNI: PN6, PN10, PN16, PN25, PN40, PN64
Material:
| Carbon Steel |
ASTM A105, ASTM A350 LF1, ASTM A350 LF2, S235JR, P245GH, P250GH, P280GH, ASTM A694 F42, ASTM A694 F46, ASTM A694 F52, ASTM A694 F56, ASTM A694 F60, ASTM A694 F65, ASTM A694 F70, etc |
| Stainless Steel |
ASTM A182 F304, ASTM A182 F304L, ASTM A182 F304H, ASTM A182 F316, ASTM A182 F316L, ASTM A182 F317, ASTM A182 F317L, ASTM A182 F321, ASTM A182 F310, ASTM A182 F347, etc. |
| Alloy Steel |
ASTM A182 F1, ASTM A182 F5, ASTM A182 F9, ASTM A182 F11, ASTM A182 F22, ASTM A182 F91, etc. |
| Duplex and super duplex steel |
ASTM A815 UNS S31803, ASTM A815 UNS S32205, ASTM A815 UNS S32750, ASTM A815 UNS S32760 |
Service:
Surface Treatment: Black painting, anti-rust varnish, anti-rust oil, hot-galvanized
Non-destructive Testing: penetration test, ultrasonic test, radiographic test
Certificate: CE, ISO, PED, TS, BV, CQC Certificate
Packing: Plywood Case or Pallet
Forged Blind Flange Manufacturer Changrun Supplies Forged BL Flanges, Dimension: 5 Inch (DN125) Class rating: 150lb Material: ASTM A815 UNS S31803 Flange face: RF, FF, RTJ, TF, GF. Certificates: CE, ISO, PED, TS, BV, CQC.
Forged Blind Flange Manufacturer Changrun Supplies Forged BL Flanges, Dimension: DN15-DN2000 (1/2-80 Inch), Class rating: 150-2500 LB (PN6-PN420), Flange face: RF, FF, RTJ, TF, GF. Certificates: CE, ISO, PED, TS, BV, CQC.
Forged Blind Flange Manufacturer Changrun Supplies Forged BL Flanges, Dimension: 8 Inch (DN200) Class rating: 300lb Flange face: RF, FF, RTJ, TF, GF. Certificates: CE, ISO, PED, TS, BV, CQC.
Forged Blind Flange Manufacturer -Changrun Supplies Forged BL Flanges, DN15-DN2000 (1/2-80 Inch), 150-2500 LB (PN6-PN420), Flange face: RF, FF, RTJ, TF, GF. Materials: Carbon Steel: ASTM A105, ASTM A350 LF1, ASTM A350 LF2.
Forged Blind Flange Manufacturer Changrun Supplies Forged BL Flanges, Dimension: 3/4 Inch (DN20) Class rating: 150lb Material: ASTM A815 UNS S32205 Flange face: RF Certificates: CE, ISO, PED, TS, BV, CQC.
Forged Blind Flange Manufacturer Changrun Supplies Forged BL Flanges, DN15-DN2000 (1/2-80 Inch), 150-2500 LB (PN6-PN420), Flange face: RF, FF, RTJ, TF, GF. Certificates: CE, ISO, PED, TS, BV, CQC.
Forged Blind Flange Manufacturer -Changrun Supplies Forged BL Flanges, DN1500 (42 Inch), 300 LB (PN6-PN420), Flange face: RF. Materials: Carbon Steel: ASTM A105, ASTM A350 LF1, ASTM A350 LF2.
Forged Blind Flange Manufacturer Changrun Supplies Forged BL Flanges, Dimension: 2 Inch (DN50) Class rating: 150lb Material: ASTM A182 F316 Flange face: RF Certificates: CE, ISO, PED, TS, BV, CQC.
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