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What is plate flange?

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What is plate flange?

plate flange

Plate flange is also named plain flange, flat flange and slip on flange etc. A plate flange is a flat, circular disk that is welded onto the end of a pipe and allows it to be bolted to another pipe. Typically used in fuel and water pipelines, the two plate flanges will be bolted together with a gasket in between them. The plate flange will have bolt holes all around the perimeter and will be used to create junctions, tees and joints.

 

When building a pipeline, the length of the pipes used are not always known. By manufacturing the pipe separate from the plate flange, the welders can cut the pipe to length and weld a plate flange in place to join the pipes at any needed length. The plates can also be welded to the pipe on a slight bias, allowing two pipes to be joined that may not be precisely lined up.

 

plate flange designs are uniform in any given size regardless of materials used to create them. This allows a 6-inch (15 cm) black pipe flange to mate perfectly with a 6-inch stainless steel flange. The plate flanges will have a serrated finish on the inside mating surface, which allows the plate to seat into the gasket material. This ensures a perfect seal between two joining pipes.

 

Product name : plate flange

Size ½” (15 NB) to 48″ (1200NB)
Class  150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.  

Material

Grade

 

Stainless Steel  

ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L  
Duplex Steel   ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61  
Alloy Steel 

ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91  

Carbon Steel  

ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70

In FormSORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle, etc
SpecializeAs per drawing 
Value Added Services» CNC Machining 

» Customized Flanges
StandardANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

Dimensions & Approximate Masses Of B16.5 Plate Flange

B16.5 Plate Flange Dimensions & Approximate Masses

ANSI, ASME, ASA, B16.5 150lb/sq.in. Plate Ring Flange RF
øDbgmJkHoleslKg.
1/2″88,911,134,930,222,360,3415,90,400
3/4″98,412,742,938,127,769,8415,90,700
1″107,914,350,849,234,579,4415,90,800
1 1/4″117,515,963,558,843,288,9415,91,100
1 1/2″127,017,573,065,149,598,4415,91,400
2″152,419,092,177,862,0120,6419,02,200
2 1/2″177,822,2104,890,574,7139,7419,03,600
3″190,523,8127,0107,990,7152,4419,04,100
3 1/2″215,923,8139,7122,2103,4177,8819,05,200
4″228,623,8157,2134,9116,1190,5819,05,600
5″254,023,8185,7163,6143,8215,9822,26,300
6″279,425,4215,9192,1170,7241,3822,27,500
8″342,928,6269,9246,1221,5298,4822,212,600
10″406,430,2323,8304,8276,3361,91225,418,500
12″482,631,7381,0365,1327,1431,81225,528,000
14″533,434,9412,7400,0359,1476,21228,636,000
16″596,936,5469,9457,2410,5539,71628,646,000
18″635,039,7533,4504,8461,8577,81631,750,000
20″698,542,9584,2558,8513,1635,02031,764,000
22″749,346,0641,2609,6564,4692,12034,972,000
24″812,847,6692,1663,6615,9749,32034,989,000
          

NOTE:
1. Class 150 flanges except Lap Joint will be furnished with 0.06 (1.6mm) raised face, which is included in ‘Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).
2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.
3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.
4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).
5. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.


ANSI, ASME, ASA, B16.5 300lb/sq.in. Plate Flange RF
øDbgmJkHoleslKg.
1/2″95,614,334,938,122,366,7415,90,700
3/4″117,515,942,947,627,782,5419,01,100
1″123,817,550,854,034,588,9419,01,400
1 1/4″133,319,063,563,543,298,4419,01,800
1 1/2″155,620,673,069,849,5114,3422,22,600
2″165,122,292,184,162,0127,0819,03,400
2 1/2″190,525,4104,8100,074,7149,2822,24,400
3″209,528,6127,0117,590,7168,3822,26,100
3 1/2″228,630,2139,7133,3103,4184,1822,27,500
4″254,031,7157,2146,0116,1200,0822,210,100
5″279,434,9185,7177,8143,8234,9822,212,500
6″317,536,5215,9206,4170,7269,91222,214,100
8″381,041,3269,9260,3221,5330,21225,424,800
10″444,547,6323,8320,7276,3387,31628,637,100
12″520,750,8381,0374,6327,1450,81631,750,000
14″584,254,0412,7425,4359,1514,32031,770,000
16″647,757,1469,9482,6410,5571,52034,990,000
18″711,260,3533,4533,4461,8628,62434,9112,000
20″774,763,5584,2584,2513,1685,82434,9133,000
22″838,266,7641,2641,2564,4742,92441,3197,000
24″914,469,8692,1701,7615,9812,82441,3208,000

NOTE:
1. Class 300 flanges except Lap Joint will be furnished with 0.06 (1.6mm) raised face, which is included in ‘Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).
2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.
3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.
4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).
5. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.


ANSI, ASME, ASA, B16.5 600lb/sq.in. Plate Flange RF
øDbgmJkHoleslKg.
1/2″95,214,334,938,122,366,7415,90,800
3/4″117,515,942,947,627,782,5419,01,400
1″123,817,550,854,034,588,9419,01,600
1 1/4″133,320,663,563,543,298,4419,02,100
1 1/2″155,622,273,069,849,5114,3422,23,100
2″165,125,492,184,162,0127,0819,03,700
2 1/2″190,528,6104,8100,074,7149,2822,25,400
3″209,531,7127,0117,590,7168,3822,27,300
3 1/2″228,634,9139,7133,3103,4184,1825,48,900
4″273,038,1157,2152,4116,1215,9825,411,800
5″330,244,4185,7188,9143,8266,7828,624,500
6″355,647,6215,9222,2170,7292,11228,629,500
8″419,155,6269,9273,0221,5349,21231,743,000
10″508,063,5323,8342,8276,3431,81634,970,000
12″558,866,7381,0400,0327,1488,92034,986,000
14″603,269,8412,7431,8359,1527,02038,1100,000
16″685,876,2469,9495,3410,5603,22041,3142,000
18″742,982,5533,4546,1461,8654,02044,4175,000
20″812,888,9584,2609,6513,1723,92444,4232,000
22″869,995,2641,2666,7564,4777,92447,6292,000
24″939,8101,6692,1717,5615,9838,22450,8330,000

NOTE:
1. Class 600 flanges except Lap Joint will be furnished with 0.25 (6.35mm) raised face, which is not included in ‘Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).
2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.
3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.
4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).
5. Dimensions of sizes 1/2 through 3 1/2 are the same as for Class 400 Flanges.
6. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option

  • DIN 2573 PN6 Plate Flange (Slip On Flange)
  • DIN 2576 PN10 Plate Flange (Slip On Flange)
  • DIN 2501 PN10 Plate Flange (Slip On Flange)
  • DIN 2501 PN16 Plate Flange (Slip On Flange)
  • DIN 2502 PN16 Plate Flange (Slip On Flange)
  • DIN 2503 PN25 Plate Flange (Slip On Flange)
  • DIN 2503 PN40 Plate Flange (Slip On Flange)
  • DIN 2543 PN16 Plate Flange (Slip On Flange)
  • DIN 2544 PN25 Plate Flange (Slip On Flange)
  • DIN 2545 PN40 Plate Flange (Slip On Flange)
  • EN 1092-1 PN6 Type 01 Plate Flange
  • EN 1092-1 PN10 Type 01 Plate Flange
  • EN 1692-1 PN16 Type 01 Plate Flange
  • EN 2592-1 PN25 Type 01 Plate Flange
  • EN 1092-1 PN40 Type 01 Plate Flange
  • EN 1092-1 PN16 Type 02 Plate Flange
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