ASME B16.48/ASTM A516gr. 70 Spectacle Blind 300# RF Flange

October 23, 2023

Model NO.: 150#-2500#
Manufacturing Way: Forging
Coating: as Customers Requirements
Trademark: ST
Transport Package: Pallet, Wooden Case, as Customers Requirements
Specification: SGS, BV, ISO9001, API
Origin: Cang Zhou, China
HS Code: 730791
Model NO.: 150#-2500#
Manufacturing Way: Forging
Coating: as Customers Requirements
Trademark: ST
Transport Package: Pallet, Wooden Case, as Customers Requirements
Specification: SGS, BV, ISO9001, API
Origin: Cang Zhou, China
HS Code: 730791
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


Contact: Ms abby
Hebei Shengtian Pipe-fitting Group Co., Ltd.
Office address: 1605, Yihe Tower, Cangzhou, Hebei, China
Factory address: Xiwang new district-Mengcun county-Hebei province-China
TEL: 0086-0317-5298199
FAX: 0086-0317-5295979
MOBILE: 0086-18631702046
Web Site: http://www.stpipefitting.com
    
         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
 		  
Union Male/female 1/8"-6" Pressure:3000#-9000#  
Outlet Weldolet/threadolet/socko let 1/8"-6" Standard:MSS SP-97  
Cap BW CAP 1/2"-48" Best price&high quality  
Coupling   SW/Threaded 1/8"-6" PLE;PSE;TLE,BSE;TOE  
Plug Square/hex/round 1/8"-4" Large QTY&Lower price  
Bushing Round/Hex/Flush 1/8"-4" Pressure:3000#-9000#  
Swaged nipple Threaded/Plain 1/8"-4" SCH10S-SCH80  
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


Contact: Ms abby
Hebei Shengtian Pipe-fitting Group Co., Ltd.
Office address: 1605, Yihe Tower, Cangzhou, Hebei, China
Factory address: Xiwang new district-Mengcun county-Hebei province-China
TEL: 0086-0317-5298199
FAX: 0086-0317-5295979
MOBILE: 0086-18631702046
Web Site: http://www.stpipefitting.com
    
         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
 		  
Union Male/female 1/8"-6" Pressure:3000#-9000#  
Outlet Weldolet/threadolet/socko let 1/8"-6" Standard:MSS SP-97  
Cap BW CAP 1/2"-48" Best price&high quality  
Coupling   SW/Threaded 1/8"-6" PLE;PSE;TLE,BSE;TOE  
Plug Square/hex/round 1/8"-4" Large QTY&Lower price  
Bushing Round/Hex/Flush 1/8"-4" Pressure:3000#-9000#  
Swaged nipple Threaded/Plain 1/8"-4" SCH10S-SCH80  

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