1. What's blind flange usage
Blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. This blind flange is available in various sizes and materials and is used to provide positive closer on the ends of pipes, valves or equipment nozzles. This flange helps in easy access to A Line once it has been sealed. The blind flange is sometimes custom made or machined to accept a nominal sized pipe to which reduction is being made. This reduction can be a threaded reduction or welded reduction.
2. Features of blind flanges: Some important features of blind flanges are as follows:
Blind flanges are sometimes supplied with NPT fittings which allow pressure test connections to be fitted.
They are used to blank off the ends of pipe.
They are also used to blank off the ends of valves and pressure vessel opening.
Considering factors like internal pressure and bolt loading, blind flanges, especially in the larger sizes, are the most highly stressed of all types of flanges.
Since the maximum stresses in a blind flange are bending stresses at the center, they can safely be allowed to be higher than in other types of flanges.
Blind flanges are made to fit standard pipes in all sizes.
3. Blind flange material
Stainless Steel: ASTM A 182, A 240
Grade: F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750
Carbon Steel: ASTM A 105, ASTM A 181
Alloy Steel: ASTM A 182, GR F1, F11, F22, F5, F9, F91
Nickel Alloys: Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22, C276
Copper Alloys: Copper, Brass & Gunmetal
Size: 1/8" NB TO 48"NB.
Class: 150#, 300#, 400 #, 600#, 900#, 1500# & 2500 #.
4. Blind flange standard
ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN: DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B. S: BS4504, BS4504, BS1560, BS10
Descriptions | Size | Remarks |
Pictures |
| Elbow | 45°/60°/90°/180°
| 1/2"-80" | Standard: ANSI; BS; JIS; DIN; MSS; etc |
|
Flanges | PL/SO/WN/SW/BL/IF |
1/2"-80" | Material: Carbon steel; Stainless steel; Alloy steel;
Cast iron; etc |
|
| Reducer | CON/ECC
|
1/2"-80" | Structure Technique: Forged and casting flanges.
|
|
| Tees | Equal/reducer |
1/2"-80" | Surface Coating technique: Sand Blast; Lacquering; |
|
| Nipple | Threaded/Hex/ Round | 1/2"-80" | Surface finishing: black, electro-galvanized, hot-galvanized
|
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| Union | Male/female | 1/8"-6" | Pressure:3000#-9000# |
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| Outlet | Weldolet/threadolet/socko let | 1/8"-6" | Standard:MSS SP-97 |
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| Cap | BW CAP | 1/2"-48" | Best price&high quality |
|
| Coupling | SW/Threaded | 1/8"-6" | PLE;PSE;TLE,BSE;TOE |
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| Plug | Square/hex/round | 1/8"-4" | Large QTY&Lower price |
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| Bushing | Round/Hex/Flush | 1/8"-4" | Pressure:3000#-9000# |
|
| Swaged nipple | Threaded/Plain | 1/8"-4" | SCH10S-SCH80 |
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Hebei Shengtian Pipe-Fitting Group Co., Ltd. Was established in 1989. We are located in MengcunCounty in Hebei Province, covering an area of 100, 000 square meters, with a workshop of 25, 000 square meters and registered capital of $7, 500, 000. Our company has a strong staff team. There are over 360 employees, including over 30 professionals and technicians.
We are capable of manufacturing various pipe fittings. Our main products are elbows, tees, bends, reducers, caps, flanges and sockets. We have been in this line for about 20 years. Our products are exported to many countries and regions in Southeast Asia, the Middle East, Europe and America. Our products enjoy a good reputation in domestic and foreign markets. Every year, our company receives hundreds of foreign visitors and innumerable domestic visitors.
We have first-class inspection devices, perfect detecting means and well-trained specialists. And we stick to ISO9000: 2000 quality system and efficiently control procedure in production. We have confidence that we can supply the best quality products. We would like to take responsibility for any quality uncertainty. Even so, our price is competitive. Besides, we can provide the best service to you.
In order to avoid the policy of the anti-dumping duties imposed on pipe&fittings from the Europe, United States and other countries, We can re-export through other countries like Malaysia, etc, to circumvent the anti-dumping duties, which could make you to win more competitive price.
