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Alloy Steel Flanges Manufacturer

Alloy Steel Flanges are made up of different alloys that have different material compositions. Their mechanical properties vary with the composition and the dimensions vary with the standards. There are different types of alloys that belong to ASME A182 grades. The grades can range as F5, F9, F11 and so on. The Alloy Steel Blind Flanges are closed ended flanges that end a pipeline. There are different types of blind flanges and shapes for different types of applications. There are also other types such as socket weld flanges, weld neck flanges, SWRF flanges and Alloy Steel Slip On Flange types.

Alloy Steel Flanges

Alloy Steel Flanges

Astm A182 Flanges

Astm A182 Flanges

Chrome Moly Flanges

Chrome Moly Flanges

The slip on flanges are one of the most used types for the ease of application and the accuracy in connection point. The flanges range in sizes from ½ inches to 48 inches. The AS Pipe Flange dimensions are specified by the ANSI, ASME, ASTM, DIN and all other international standards. Depending on the need for mechanical properties, the high alloy or low alloy flanges can be used. The Low Alloy Steel Flange has low amounts of alloying elements where the high alloy flanges have higher amounts of alloying elements; sometimes, commercially pure elements as well. The different production types such as the Alloy Steel Threaded Flange, plate flange, screwed flange and the forged flanges are used in different types of applications. The applications include oil and gas, petroleum, water lines, high temperature services, low temperature services, chemical plants, food production plants, acid processing plants and other industrial applications.

Table of Content



Specification Chart of Alloy Steel Flanges


Specifications ASTM A182 / ASME SA182
ASME B16.5 size range 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Standards BS4504, BS 10, EN-1092, DIN, ANSI, ASME, ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS, DIN, EN, GOST.
Standard ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Standard DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
Standard JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
Standard UNI 6Bar 10Bar 16Bar 25Bar 40Bar
Standard EN 6Bar 10Bar 16Bar 25Bar 40Bar
Main Types Forged / Threaded / Screwed / Plate
Flange supporting material Gasket, Ring Joint, Flange Bolts
Alloy Steel Pipe Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Most common types of Alloy Steel
  • Socket Weld Ring Flange (SWRF), Alloy Steel
  • Threaded Ring Flange, Alloy Steel
  • Lap Joint Ring Flange (LJRF), Alloy Steel
  • Ring Type Joint Flange (RTJF), Alloy Steel
  • Weld Neck Ring Flange (WNRF), Alloy Steel
  • Slip-On Ring Flange (SORF), Alloy Steel
  • Blind Ring Flange (BLRF), Alloy Steel
Production technique
  • Forged, Heat treated and machined
Connect Type/ Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, , Groove
Special design

As per your drawing

AS, ANSI, BS, DIN and JIS
15 NB (1/2") to 200 NB (8")
Equal and Reducing Configurations

Alloy Steel Threaded, Socketweld, Slip-On, Blind, Weld Neck
Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Equipment Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Specialized manufacturer of
  • DIN 2566 pn16
  • DIN 2566 en 1092 1
  • DIN 2566 pn10
  • Rtj
  • Pn16
  • Alloy Steel Socketweld
  • Alloy Steel Plate
  • Alloy Steel Lap Joint
  • Alloy Steel Loose
  • Alloy Steel Orifice
  • Alloy Steel AS 4087 Water
  • Alloy Steel Large Diameter
  • Alloy Steel Sorf
  • Alloy Steel Blind
  • Alloy Steel Table
  • Alloy Steel Weld Neck
  • Alloy Steel Threaded
  • Alloy Steel Slip-On
Standard

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange

  • B.S: BS4504 , BS3293, BS1560, BS10
  • AS 2129: Table D; Table E; Table H
  • ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
  • ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
  • ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • American standard (ANSI)
  • German (DIN)
  • British standard (BS)
  • Any other specilised
  • DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638
  • The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203;UNI2276
Key markets and industries for
  • Bitumen upgraders.
  • Heavy oil refineries.
  • Nuclear power (mostly seamless).
  • Petrochemicals and acids.
Application
  • To Connect Pipe & Tubes in Chemical, Construction, Petroleum, Shipbuilding Metallurgy, Gas, Power etc
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

Common Types Of Chrome Moly Flanges


Alloy Steel Slip On Flange

Alloy Steel Slip On Flange

Alloy Steel Socket Weld Flange

Alloy Steel Socket Weld Flange

Alloy Steel Blind Flange

Alloy Steel Blind Flange

Alloy Steel Weld Neck Flange

Alloy Steel Weld Neck Flange

Alloy Steel Forged Flange

Alloy Steel Forged Flange

Alloy Steel Raised Face Flange

Alloy Steel Raised Face Flange

Alloy Steel Male and Female Flange

Alloy Steel Male and Female Flange

Alloy Steel Bleed Ring

Alloy Steel Bleed Ring

Alloy Steel Plate Flange

Alloy Steel Plate Flange

Alloy Steel Ring Type Joint Flange

Alloy Steel Ring Type Joint Flange

Alloy Steel Tongue & Groove Flange

Alloy Steel Tongue & Groove Flange

Alloy Steel Reducing Flange

Alloy Steel Reducing Flange


Dimensions of ASTM A182 Alloy Steel Blind Flanges


AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)
  • ASME B1.20.1, Pipe Threads, General Purpose
  • ASME B16.1, Cast Iron Flanges and Flanged Fittings Classes 25, 125 and 250
  • ASME B16.5, Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24
  • ASME B16.11, Forged Fittings, Socket Welding and Threaded
  • ASME B16.25, Buttwelding Ends
  • ASME B16.36, Orifice Flanges
  • ASME B16.47, Large Diameter Steel Flanges NPS 26 Through NPS 60
  • ASME B31.1, Power Piping
  • ASME B31.3, Process Piping
  • ASME B46.1, Surface Texture (Surface Roughness, Waviness, and Lay)

Low Alloy Steel Flanges Weight Chart


Standard
Class
Diameter
Bolt Circle Diameter
Number of Bolts
Bolt Size
Diameter of Bolt Hole
AS4087
PN14
95
67
4
M12
14
AS 2129 Flange
Table C
95
67
4
13
14
Table D
95
67
4
13
14
Table E
95
67
4
13
14
Table F
95
67
4
13
14
Table H
114
83
4
16
17
Table J
114
83
4
16
17
ANSI B16.5
ANSI 150
89
60
4
13
16
ANSI 300
95
67
4
13
16
ANSI 600
95
67
4
13
16
ANSI 900
121
83
4
19
22
ANSI 1500
121
83
4
19
22
ISO 7005 (DIN) Flange
PN6
80
55
4
M10
11
PN10
95
65
4
M12
14
PN16
95
65
4
M12
14
PN20
90
60.5
4
M14
16
PN25
95
65
4
M12
14
PN40
95
65
4
M12
14

Sizes of Alloy Steel Flange


Size Chart Of Alloy Steel Flange

Size Chart Of Alloy Steel Flange

ASTM A182 Alloy Steel Blind Flanges Chemical Formula


Grade
C
Mn
Si
P
S
Cr
Mo
F1
0.15 max
0.3-0.6
0.5
0.03
0.03
4-6
0.44-0.65
F5
0.15 max
0.3-0.6
0.5-1.0
0.03
0.03
4-6
0.44-0.65
F9
0.15 max
0.3-0.6
0.5-1.0
0.03
0.03
8-10
0.9-1.1
F11
0.5-0.15
0.3-0.6
0.5-1.0
0.03
0.03
1.0-1.5
0.44-0.65
F12
0.15 max
0.3-0.6
0.5
0.03
0.03
4-6
0.44-0.65
F22
0.50.15 max
0.3-0.6
0.5
0.03
0.03
4-6
0.44-0.65
F91
0.15 max
0.3-0.6
0.5-1.0
0.03
0.03
8-10
0.9-1.1

Mechanical Behaviour of ASME B16.5 Alloy Steel Flanges


Grade
Tensile Strength
Yield Strength (0.2%Offset)
Elongation
F1
275
485
20 %
F5
275
485
20 %
F9
380
585
20 %
F11
205
415
20 %
F12
275
485
20 %
F22
205
415
20 %
F91
380
585
20 %

Alloy Steel Flanges Application


  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment

Pressure Rating of ASTM A182 Alloy Steel Blind Flanges


ASME/ANSI B 16.5 Welding Neck Flange, Slipon Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Ring Type Joint Flange
PRESSURE CLASS 75, 150, 300, 400, 600, 900
BS 4504 SEC 3.1 Welding Neck Flange, Hubbed Slipon Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Plate Flange,Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.47 Welding Neck Flange, Blind Flange [Series A & B]
PRESSURE CLASS PN 2.5 TO PN 40
ASME/ANSI B 16.36 Welding Neck Flange, Slipon Flange, Threaded Flange
PRESSURE CLASS 300, 400, 600, 900, 1500, 2500
BS 1560 BOSS Welding Neck Flange, Socket Welding Flange, Slip-On Flange, Blind Flange,Screwed Boss Flange, Lapped Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
BS10 Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange
BS 4504[PART 1] Welding Neck Flange, Hubbed Slip-On Hubbed Threaded, Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange
PRESSURE CLASS PN 2.5 TO PN 400
TABLE D, E, F, H
PRESSURE CLASS PN 6 TO PN 100
DIN FLANGES DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636,
2637,2638, 2673

Materials