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Stainless Steel Reducing Flange

View ASME B16.5 Reducing Flange & Reducing Weld Neck Flange Weights Chart & Dimension

Flanges are circular rims with projections outwards with a collar or rib sometimes to cause strength at the attachment site. There are different types of flanges and different material grades are used to produce these flanges. Rajveer Stainless And Alloys is a manufacturer and supplier of different flanges. The Carbon Steel Reducing Flange is made up of carbon steel to add to the strength and to make the pipe diameter smaller at connection. Reduction fittings are useful when reducing the volume of fluid flow. There are different dimensions of these flanges. The ASME B16.5 Reducing Flange is a type of flange falling under the specification that covers the outer diameter ranging from ½ inches to 24 inches and including the pressure classes of 150 to 2500.

Stainless Steel Reducing Flange

Carbon Steel Reducing Flange and ANSI B16.5 Reducing Companion Flange Manufacturer

The Reducing Companion Flange carries two functions at once. It reduces the volume of fluid flow and also acts as a coupling between two pipes with threads. The Reducing Flange Dimensions change according to the standards and pipe sizes they are used in. Alloy Steel Reducing Socket Weld Flange has a socket attached to it to hold the pipes so that welding is easier and the connection becomes better. A variation is the Reducing Weld Neck Flange which has a neck like structure welded in and it also makes welding easier. We manufacture different types and sizes of flanges. Please contact us with your inquiries.

 

Specification of Stainless Steel Reducing Flange

Size Charts 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Standards GOST Flange, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092, BS, BS4504, BS 10, EN-1092, DIN, ANSI, ASME, DIN, MSS S44, ISO70051, ANSI/ASME B16.5, ASME/ANSI B16.5/16.36/16.47A/16.47B, B16.47 Series A & B, B16.48, EN
Pressure Rating ANSI Class 1500, Class 150, Class 900, Class 2500, Class 300, Class 600,
Pressure Calculation in DIN 10Bar, 16Bar, 25Bar, 40Bar, 6Bar, / PN16, PN64, PN40, PN25, PN10, PN6
JIS 16 K, 20 K, 5K, 10 K, 40 K, 63 K, 30 K,
UNI 10Bar 16Bar 6Bar 25Bar 40Bar
EN 6Bar 25Bar 40Bar 10Bar 16Bar
Most common Types Threaded / Screwed / Forged / Plate
Production technique
  • Forged, Heat treated and machined
Shapes and Types we produce Large Male-Female (LMF), Ring Type Joint (RTJ), Flat Face (FF), Small Tongue, Small Male-Female (SMF),Raised Face (RF), Large Tongue & Groove, Groove, Lap-Joint Face (LJF)
Test Direct-reading Spectrograph, Magnetic particle detector, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector
Equipment Pushing Machine, Press machine, Bending machine, Sand-blasting machine, electric bevelling machine etc
Uses & application
  • Bitumen upgraders.
  • Petrochemicals and acids.
  • Heavy oil refineries.
  • Nuclear power (mostly seamless).

 

Reducing Flange Dimensions Chart

Nominal Size Type Ø A D Liner
Thickness
DN1 DN2
Inch. Inch. Millimeter Millimeter Millimeter
3/4" 1/2" 1 98.5 30 5
1" 3/4" 1 108 30 5
1" 1/2" 1 108 30 5
1.1/2" 3/4" 1 127 30 5
1.1/2" 1/2" 1 127 30 5
1.1/2" 1" 1 127 30 5
2" 1/2" 3 152 30 5
2" 1" 2 152 30 5
2" 3/4" 2 152 30 5
2" 1.1/2" 1 152 30 5
3" 1" 3 190.5 35 5
3" 3/4" 3 190.5 35 5
3" 1.1/2" 2 190.5 35 5
3" 2" 1 190.5 35 5
4" 1.1/2" 3 228.6 35 5
4" 1" 3 228.6 35 5
4" 2" 3 228.6 35 5
4" 3/4" 3 228.6 35 5
4" 3" 2 228.6 35 5
6" 3" 3 280 40 5
6" 3/4" 3 280 40 5
6" 1.1/2" 3 280 40 5
6" 1" 3 280 40 5
6" 2" 3 280 40 5
6" 4" 2 280 40 5
8" 1" 3 343 35 5
8" 4" 3 343 40 5
8" 2" 3 343 40 5
8" 1.1/2" 3 343 35 5
8" 3" 3 343 40 5
8" 6" 2 343 40 5
10" 1" 3 406 35 2.5
10" 2" 3 406 35 2.5
10" 6" 3 406 35 2.5
10" 1.1/2" 3 406 35 2.5
10" 3" 3 406 35 2.5
10" 4" 3 406 35 2.5
10" 8" 2 406 35 3.5
12" 1" 3 483 35 3.5
12" 1.1/2" 3 483 35 3.5
12" 2" 3 483 35 3.5
12" 6" 3 483 35 3.5
12" 3" 3 483 35 3.5
12" 4" 3 483 35 3.5
12" 8" 3 483 35 3.5
12" 10" 2 483 35 3.5
14" 12" 1 533 40 3.5
16" 14" 2 597 35 3.5
16" 12" 3 597 40 3.5

 

ASME B16.5 Reducing Flange Pressure Ratings

Flanges pressure rating in psig for Reducing Flange ASME
Temperature (F°) 150# 300# 600# 400# 900# 1500# 2500#
-20 to 100 285 740 1480 985 2220 3705 6170
200 260 905 680 1360 2035 3395 5655
300 230 870 655 1310 1965 3270 5450
400 200 845 635 1265 1900 3170 5280
500 170 805 605 1205 1810 3015 5025
600 140 755 570 1135 1705 2840 4730
650 125 730 550 1100 1650 2745 4575
700 110 710 530 1060 1590 2655 4425
750 95 675 505 1015 1520 2535 4230
800 80 550 410 825 1235 2055 3430
850 65 425 320 640 955 1595 2655
900 50 305 230 460 690 1150 1915
950 35 185 135 275 410 685 1145
1000 20 115 85 170 255 430 715

What is the difference between threaded reducing flange and weld neck reducing flange?

The flanges are pipe fittings that are used to connect pieces of pipes together. There are different types of flanges for different purposes. The threaded flanges have threads whereas the weld neck flanges have necks welded onto them. The threads make the flanges easy to install with the threads and they could either be welded or not depending on the need. The weld neck flanges are welded to make the connections. Both the threaded and weld neck reducing flanges are used to reduce the volume of the flow at the connections. The only difference is in the fitting mechanism that there threaded reducing flange can be connected with the threads on the pipes where the weld neck reducing flanges have to be welded onto the pipes.