Forged Flanges
Our industrial flanges are ideal for diverse high pressure and temperature applications. Designed with precision for easy installation, we offer standard and custom-designed flanges in a variety of grades, materials, and finishes to meet specific requirements.
Slip-On Flanges (SORF) Specialization
Our Slip-On Flanges are slipped over the pipe and welded both inside and outside to provide sufficient strength and prevent leakage. Often chosen over weld necks for their exceptional value, they require less accuracy when cutting pipe to length, making installation significantly easier.
Flange Material Specifications
Standards & Ratings
Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Pressure Ratings: Class 150, 300, 400, 600, 900, 1500, 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.
Form Factors & Facing
Faces: Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), Large Tongue & Groove, Small Tongue & Groove
Coatings: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold/Hot Dip Galvanized
Material Grade Overviews
- Carbon Steel: ASTM A105/A105N, A350 LF1-LF3, A694 F42-F70, A516.60-70. Includes Spectacle Blind & Spacer Rings. RST37.2, C22.8
- Stainless Steel: ASTM A182 F202, F304/L/H, F316/L/H/Ti, F310, F321, F904L
- Alloy Steel: ASTM A182 F1, F5, F9, F11, F22, F91
- Special Alloys: Duplex, Super Duplex, Nickel Alloys
Slip-On Flanges Dimensions (150 Lbs)
| Nominal Bore | Dia.(D) | Thick.(E) | Dia.(F) | Dia.(B) | Dia.(A) | Height(H) | Drilling | ||
|---|---|---|---|---|---|---|---|---|---|
| Nbr Holes | Dia.(C) | Dia. Pitch Circle | |||||||
| 1/2″ | 90 | 9.6 | 35.05 | 30 | 22.2 | 14 | 4 | 15.87 | 60.3 |
| 3/4″ | 100 | 11.2 | 42.93 | 38 | 27.7 | 14 | 4 | 15.87 | 69.9 |
| 1″ | 110 | 12.7 | 50.80 | 49 | 34.5 | 16 | 4 | 15.87 | 79.4 |
| 1 1/4″ | 115 | 14.3 | 63.50 | 59 | 43.2 | 19 | 4 | 15.87 | 88.9 |
| 1 1/2″ | 125 | 15.9 | 73.15 | 65 | 49.5 | 21 | 4 | 15.87 | 98.4 |
| 2″ | 150 | 17.5 | 91.95 | 78 | 61.9 | 24 | 4 | 19.05 | 120.7 |
| 2 1/2″ | 180 | 20.7 | 104.65 | 90 | 74.6 | 27 | 4 | 19.05 | 139.7 |
| 3″ | 190 | 22.3 | 127.00 | 108 | 90.7 | 29 | 4 | 19.05 | 152.4 |
| 3 1/2″ | 215 | 22.3 | 139.70 | 122 | 103.4 | 30 | 8 | 19.05 | 177.8 |
| 4″ | 230 | 22.3 | 157.22 | 135 | 116.1 | 32 | 8 | 19.05 | 190.5 |
| 5″ | 255 | 22.3 | 185.67 | 164 | 143.8 | 35 | 8 | 22.22 | 215.9 |
| 6″ | 280 | 23.9 | 215.90 | 192 | 170.7 | 38 | 8 | 22.22 | 241.3 |
| 8″ | 345 | 27.0 | 269.75 | 246 | 221.5 | 43 | 8 | 22.22 | 298.5 |
| 10″ | 405 | 28.6 | 323.85 | 305 | 276.2 | 48 | 12 | 25.40 | 362.0 |
| 12″ | 485 | 30.2 | 381.00 | 365 | 327.0 | 54 | 12 | 25.40 | 431.8 |
| 14″ | 535 | 33.4 | 412.75 | 400 | 359.2 | 56 | 12 | 28.57 | 476.3 |
| 16″ | 595 | 35.0 | 469.90 | 457 | 410.5 | 62 | 16 | 28.57 | 539.8 |
| 18″ | 635 | 38.1 | 533.40 | 505 | 461.8 | 67 | 16 | 31.75 | 577.9 |
| 20″ | 700 | 41.3 | 584.20 | 559 | 513.1 | 71 | 20 | 31.75 | 635.0 |
| 24″ | 815 | 46.1 | 692.15 | 663 | 616.0 | 81 | 20 | 34.92 | 740.0 |
* All dimensions are in mm unless otherwise specified.
Flange Materials Portfolio
Stainless & Duplex Steel Flanges
Range: 15 NB UP TO 600 NB.
Classes: 150 LBS - 2500 LBS / Tables 2.5 - 400.
Stainless Grades: ASTM / ASME SA 182 F 304/L/H, 309H, 310H, 316/L/H/LN, 317/L, 321/H, 347H.
Duplex Grades: ASTM / ASME SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61.
Slip On, Socket Weld, Blind, Lapped, Screwed, Weld Neck, Reducing, Spectacle, Slip On Boss, Plate, Plate Blank, Screwed Boss.
Carbon & Alloy Steel Flanges
Carbon Steel Grades: ASTM/ASME A 105, ASTM/ASME A 350 LF 2.
Alloy Steel Grades: ASTM/ASME A 182 GR F 5, F 9, F 11, F 12, F 22, F 91.
Available in identical expansive forms (Slip On, Blind, Weld Neck, Spectacle, etc.) and full pressure classifications as stainless configurations.
- 150, 300, 400, 600 LBS
- 900, 1500, 2500 LBS
- TABLE 2.5, 6, 10, 16, 25
- TABLE 40, 64, 160, 320, 400
Nickel & Copper Alloy Flanges
Nickel Alloy ASTM/ASME Specs:
- SB 564 UNS 2200 (Nickel 200)
- SB 564 UNS 4400 (Monel 400)
- SB 564 UNS 8825 (Inconel 825)
- SB 564 UNS 6600 (Inconel 600)
- SB 564 UNS 6601 (Inconel 601)
- SB 564 UNS 6625 (Inconel 625)
- SB 564 UNS 10276 (Hastelloy C276)
- SB 160 UNS 2201 (Nickel 201)
- SB 472 UNS 8020 (Alloy 20/20 CB 3)
Copper Alloy ASTM/ASME Specs:
- SB 61 UNS C 92200
- SB 62 UNS C 83600
- SB 151 UNS 70600 (CU-NI-90/10)
- SB 151 UNS 71500 (CU-NI-70/30)
- SB 152 UNS C 10100/10200/10300/10800/12000/12200
Hastelloy
Grades: Hastelloy C-22, C-276, C-2000
Size: 1/2"NB - 12"NB
Highly resistant to severe corrosion. Superior durability in acidic environments.
Titanium
Grades: Grade 1, 2, 3, 4, 5, 7, 9, 23
Standard: DIN, ASTM, BS
Outstanding strength-to-weight ratio and low density. Perfect for marine and aerospace applications.
Inconel
Grades: 600, 601, 625, 625LCF, 686, 718, 800, 825, X-750
Size: 1/2" - 48" (15mm - 1200mm)
Available Forms:
SW, Slip On, Blind, Lapped, Screwed, WNRF, LWN, Reducing, Spectacle, RTJ.
Incoloy
Grades: 800, 825, 925, a-286, DS
Class Ratings: Complete range Class 50 through 3000.
High temperature strength and excellent oxidation resistance.
Monel
Grades: Monel 400, Monel k500
Size Range: 1/2" NB - 60" NB
Outstanding resistance to sea water and high velocity brackish water.
Custom Flange Requirements?
Beyond standard Slip-On and Weld Neck flanges, we utilize CNC machining to forge customized profiles per client drawings across exotic metallurgy.
Speak With Our Engineers