Specifications
1. Blind flange is used for closing end of piping system
2. Carbon steel, alloy are available
3. Good quality short delivery time
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
| FLANGE STANDARD | PRESSURE RATING | TYPE | FACING | MATERIAL |
| ANSI B16.5 | CLASS 150 300 400 600 900 1500 2500 LBS | SO WN SW TH LJ BL LWN | RF
FF
RTJ
etc | ASTM SA105/105N
A350 LF2 CL1/CL2
A694 F45/52/65,
s235jr C22.8;
A182 F304/304L
A182 F316/316L
A182 F317L
A182 F310 F321 F347;
A182 F5 F9 F11
F51 F53 F55 F60
F304H F316H F317H,
C276
INCONEL 600 625;
and etc.. |
| ANSI B16.47-A MSS | CLASS 150 300 400 600 900 LBS | WN BL |
| ANSI B16.47-B API | CLASS 75 150 300 400 600 900 LBS |
| ANSI/ASME B16.36 | CLASS 300 400 600 900 1500 2500 LBS | ORIFICE |
| ANSI/ASME B16.48 | CLASS 150 300 400 600 900 1500 2500 LBS | FIG.8
SPACER AND BLANK
SPECTACLE |
| AWWA C207 | CLASS B & D TABLE 2/3, CLASS E TABLE 4 | SO PL BL |
| EN 1092-1 | PN 2.5 6 10 16 25 40 63 100 160 250 320 400 | PL LOO BL WN SO TH |
| BS 4504 | PN 2.5 6 10 16 25 40 | PL WN TH BL SO |
| DIN | PN 6 10 16 25 40 | PL WN TH BL LOO SO |
| UNI | PN 6 10 16 25 40 | PL WN TH BL LOO |
| SABS/SANS 1123 | CLASS 600 1000 1600 2500 4000 KPA | WN PL TH SO BL |
| JIS B2220/KS | 5K 10K 16K 20K 30K 40K | SOP/PL SOH/SO BL |
| GOST | PN 1 1.6 2.5 4 6.3 10 | PL WN BL |
| AS | TABLE D E F H | PL SO BL |
Tianjin Golden Hugeline Co., Ltd., located in Tianjin city, is one of the biggest steel groups. Golden Hugeline Group are specialized in producing and exporting all kinds of steel pipe and fittings, flanges, valves in China. Our group is established in 1995 and We have over 15 years' Experience in steel market.
Our group have four branches. The factories of steel pipe and pipe fitting are located in Hebei Province, one flange factory is located in Shanxi Province, and the last one is our sea shipping company in Tianjin. Our main products are pipe fittings, pipes, flanges, valves and so on. We can manufacture according to ANSI/ASTM, JIS, DIN, API, GOST and non-standard. The sizes are 1/2" up to 72" for pipe fittings, 1/2" up to 32" for flanges, 1/2" up to 24" for pipes, 1/2"up to 24" for valves.
Our products have been widely used in many projects. Also we are a good supplier of SGS and have passed ISO, API, TUV, EC and so on. Till now, we have exported to Vietnam, British, Sweden, Japanese, Korea, India, Brazil, Germany, Africa and Middle East counties. We have good reputation from our customers and have long term cooperation with them.
We sincerely hope to cooperate with new and old friends and warmly welcome you to visit our factory.
SKYPE: Huweiyan001 whats APP and wechat: 0086-13752320560
