Top Manufacturer of Tongue and Groove Flanges in India – Supplied in all major global standards including JIS, BS, EN, ISO & ANSI. Series A/B Tongue & Groove Flanges in Class 150 to 2500, MSS SP-44 T&G Flange.
We are a trusted and ISO 9001:2015 certified manufacturer and supplier of Tongue and Groove Flanges, catering to global industries with precision-engineered flange solutions. These flanges are manufactured in accordance with international standards such as ASME B16.5, ASME B16.47 Series A & B, EN 1092-1, DIN, and BS. Available in materials like Stainless Steel, Carbon Steel, Alloy Steel, and Mild Steel, our Tongue & Groove Flanges ensure tight and reliable connections, especially where gasket alignment is critical.
Tongue and Groove Flanges consist of two matched surfaces—one with a raised ring (tongue) and the other with a matching depression (groove). This design ensures proper gasket seating and helps maintain alignment under pressure. These flanges are available in pressure classes ranging from Class 150 to Class 2500 and PN6 to PN40. Face types include Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ), depending on the application. The precise machining ensures leak-proof performance in high-pressure and high-temperature environments.
We supply Tongue and Groove Flanges in sizes ranging from ½ inch to 48 inches in both standard and custom dimensions. Available in various thicknesses and face finishes, our flanges meet the needs of industries such as oil & gas, petrochemicals, water treatment, power plants, and offshore platforms. We also offer forged and machined versions with full traceability, material test certificates (MTC), and PED/EN certification upon request.
Tongue and Groove Flanges are ideal for applications requiring accurate alignment and consistent sealing—such as heat exchangers, valve systems, and pressure vessels. They offer excellent resistance to internal pressure and mechanical stress while minimizing the risk of gasket displacement. Their ability to maintain sealing integrity even under fluctuating loads makes them a preferred choice for critical and high-integrity piping systems. These flanges also support easier maintenance and disassembly, saving time during servicing.
High-Quality Tongue and Groove Flanges – Manufactured to ASME B16.47, ASME B16.5, Table D & Table E Standards – Available in EN 1092-1 Specifications for global supply, Large Tongue and Groove Flange.
Technical Index
Tongue and Groove Flange Standard Specifications
| Product Name | Tongue and Groove Flanges | T&G Flange |
|---|---|
| Flange Size Availability | ½” (15 NB) to 48” (1200 NB) |
| Flange Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500, PN6, PN10, PN16, PN25, PN40, PN64 |
| Applicable Flange Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605 |
| Flange Facing Types | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap Joint, Male & Female (M&F), Tongue & Groove (T&G) |
| Custom Fabrication | Manufactured as per AS, BS, ANSI, DIN, JIS standards | Custom designs available | Equal and Reducing Configurations |
| Material Test Certifications | EN 10204 3.1 & EN 10204 3.2 | Compliance with NACE MR0175, NACE MR0103 |
| Testing & Inspection Reports | 100% Radiography Test Report, EN 10204/3.1B, Raw Material Certification, Third-Party Inspection Reports |
| Testing Procedures | Hydrostatic Testing, Direct-Reading Spectrograph, Ultrasonic Flaw Detection, X-ray Examination, Magnetic Particle Inspection |
| Manufacturing Equipment | Hydraulic Press Machines, Induction Heating, Bending Machines, Sand-Blasting Units, CNC Machining, Beveling Machines |
| Flange Coating Options | Anti-Rust Paint, Black Oil Paint, Yellow Transparent Coating, Zinc Plating, Hot-Dip & Cold-Dip Galvanization |
| Material Sourcing Regions | India, USA, Japan, West Europe, South Korea |
| Global Export Markets | UAE, Jordan, Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, USA, Singapore, Malaysia, Azerbaijan, Armenia, Georgia, Egypt, Nigeria, South Africa, Kenya, Morocco, Ethiopia, Ghana, Tanzania, Sudan, Uganda, Angola |
Tongue and Groove Pipe Flange Standards
| ANSI/ASME B16.47 Flanges | ANSI/ASME B16.36 Flanges | ANSI/ASME B16.5 Flanges | Pr. EN1902-1 Flanges |
| DIN Flanges | JIS Flanges | BS 4504 Flanges | BS 10 Flanges |
| MSS SP-44 Flanges | JIS B2220 Flanges | KS B1503 Flanges | UNI Flanges |
| SABS/SANS 1123 Flanges | AS 2129, AS 4087 Flanges | ISO 9624, ISO 7005-1 Flanges | AWWA Flanges Standard |
| GOST Standard Flanges | API Flanges | AS/ANZ 4331.1 Flanges | Series A Flange |
| Series B Flange | SAE J518 Flanges | GB Flange | Norwegian Standard Flanges |
Tongue and Groove Flange Material Grades and Standards
| Stainless Steel Tongue and Groove Flanges | ASTM/ASME A/SA182: F304, F304L, F316, F316L | ASTM/ASME A/SA351: CF3, CF3M, CF8, CF8M | DIN: 1.4306, 1.4301, 1.4404, 1.4401, 1.4408, 1.4308, 1.4409 |
|---|---|
| Duplex Steel Tongue and Groove Flanges | ASTM A182: S31803 / S32205 | Grades: F51, F52, F53, F54, F55, F57, F59, F60, F61 |
| Super Duplex Steel Tongue and Groove Flanges | ASTM A182: S32750 / S32760 | Grades: F51, F52, F53, F54, F55, F57, F59, F60, F61 |
| Copper Nickel Tongue and Groove Flanges | ASTM/ASME SB 61 / 62 / 151 / 152 | UNS: C70600 (90/10), C71500 (70/30), C71640 |
| Titanium Tongue and Groove Flanges | ASTM B381 / ASME SB381: Gr.1, Gr.2, Gr.4, Gr.5, Gr.7 | UNS: R50250 (Gr.1), R50400 (Gr.2), R50550 (Gr.3), R50700 (Gr.4), R52400 (Gr.7), R53400 (Gr.12), R56320 (Gr.9), R56400 (Gr.5) |
| Copper Tongue and Groove Flanges | Grades: TP1, TP2, C10100 – C12300, TU1, TU2, C12500, C14200, C14500 – C14530, C17200, C19200, C21000, C23000, C26000, C27000, C28000, C33000, C37000, C44300 – C44500, C60800, C63020, C68700, C70400, C70600, C71500, C71640 |
| Incoloy Tongue and Groove Flanges | ASTM B564 / ASME SB564: Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 |
| Inconel Tongue and Groove Flanges | ASTM B564 / ASME SB564: Inconel 600, 601, 625, 718, 783, 690, X750 |
| Nickel Alloy Tongue and Groove Flanges | ASTM B564 / ASME SB564: Nickel 200, Nickel 201, Nickel 205, Nickel 205LC |
| Hastelloy Tongue and Groove Flanges | ASTM B564 / ASME SB564: Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X |
| Monel Tongue and Groove Flanges | ASTM B564 / ASME SB564: Monel 400 (UNS N04400), Monel 500 (UNS N05500) |
| Carbon Steel Tongue and Groove Flanges | ASTM/ASME A/SA105, A/SA105N, A/SA216-WCB | DIN: 1.0460, 1.0402, 1.0619 | ASTM A105N, ASTM A350 LF2, ASTM A694 (F52, F56, F60, F65, F70, F80) |
| Alloy Steel Tongue and Groove Flanges | ASTM A182 / ASME SA182: F5, F9, F11, F12, F22, F91 |
| Alloy 20 Tongue and Groove Flanges | ASTM B462 / ASME SB462: Carpenter® 20 Alloy, Alloy 20Cb-3 |
| SMO 254 Tongue and Groove Flanges | ASTM A182 / ASME SA182: SMO 254/6Mo, UNS S31254, DIN 1.4547 |
| Aluminium Tongue and Groove Flanges | Grades: 5052, 6061, 6063, 2017, 7075 |
| Brass Tongue and Groove Flanges | Grades: 3602, 2604, H59, H62 |
| Other Specialty Tongue and Groove Flanges | Materials: Tin Bronze, Aluminum Bronze, Lead Bronze, Nimonic 75, Nimonic 80A, Nimonic 90, AISI 4140, AISI 4130, Mild Steel, Al6XN |
ASME B16.5 Flanges Types
ANSI B16.5 Tongue and Groove Flange Industries & Applications
ASME B16.5 Tongue And Groove Flange Dimensions
| DN | D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | F1 | F2 |
|---|---|---|---|---|---|---|---|---|---|---|
| ½” | 1,38 (35,1) |
1,44 (36,6) |
1,38 (35,1) |
1,44 (36,6) |
1,00 (25,4) |
0,94 (23,9) |
1,81 (46,0) |
1,75 (44,5) |
0,25 (6,4) |
0,19 (4,8) |
| ¾” | 1,69 (42,9) |
1,75 (44,5) |
1,69 (42,9) |
1,75 (44,5) |
1,31 (33,3) |
1,25 (31,8) |
2,12 (53,8) |
2,06 (52,3) |
0,25 (6,4) |
0,19 (4,8) |
| 1″ | 2,00 (50,8) |
2,06 (52,3) |
1,88 (47,7) |
1,94 (49,3) |
1,50 (38,1) |
1,44 (36,6) |
2,44 (62,0) |
2,25 (57,2) |
0,25 (6,4) |
0,19 (4,8) |
| 1¼” | 2,50 (63,5) |
2,56 (65,0) |
2,25 (57,2) |
2,31 (58,7) |
1,88 (47,8) |
1,81 (46,0) |
2,94 (74,7) |
2,62 (66,6) |
0,25 (6,4) |
0,19 (4,8) |
| 1½” | 2,88 (73,2) |
2,94 (74,7) |
2,50 (63,5) |
2,56 (65,0) |
2,12 (53,8) |
2,06 (52,3) |
3,31 (84,1) |
2,88 (73,2) |
0,25 (6,4) |
0,19 (4,8) |
| 2″ | 3,62 (92,0) |
3,69 (93,7) |
3,25 (82,6) |
3,31 (84,1) |
2,88 (73,0) |
2,81 (71,4) |
4,06 (103,1) |
3,62 (92,0) |
0,25 (6,4) |
0,19 (4,8) |
| 2½” | 4,12 (104,6) |
4,19 (106,4) |
3,75 (95,2) |
3,81 (96,8) |
3,38 (85,8) |
3,31 (84,1) |
4,56 (115,8) |
4,12 (104,6) |
0,25 (6,4) |
0,19 (4,8) |
| 3″ | 5,00 (127,0) |
5,06 (128,5) |
4,62 (117,5) |
4,69 (119,1) |
4,25 (108,0) |
4,19 (106,4) |
5,44 (138,2) |
5,00 (127,0) |
0,25 (6,4) |
0,19 (4,8) |
| 4″ | 6,19 (157,2) |
6,25 (158,8) |
5,69 (144,5) |
5,75 (146,1) |
5,19 (131,8) |
5,12 (130,0) |
6,62 (168,1) |
6,19 (157,2) |
0,25 (6,4) |
0,19 (4,8) |
| 5″ | 7,31 (185,7) |
7,38 (187,5) |
6,81 (173,0) |
6,88 (174,8) |
6,31 (160,3) |
6,25 (158,8) |
7,75 (196,9) |
7,31 (185,7) |
0,25 (6,4) |
0,19 (4,8) |
| 6″ | 8,50 (215,9) |
8,56 (217,5) |
8,00 (203,2) |
8,06 (204,7) |
7,50 (190,5) |
7,44 (189,0) |
8,94 (227,0) |
8,50 (215,9) |
0,25 (6,4) |
0,19 (4,8) |
| 8″ | 10,62 (269,8) |
10,69 (271,5) |
10,00 (254,0) |
10,06 (255,5) |
9,38 (238,3) |
9,31 (236,5) |
11,06 (281,0) |
10,62 (269,8) |
0,25 (6,4) |
0,19 (4,8) |
| 10″ | 12,75 (323,5) |
12,81 (325,4) |
12,00 (304,8) |
12,06 (306,3) |
11,25 (285,8) |
11,19 (284,2) |
13,19 (335,0) |
12,75 (323,5) |
0,25 (6,4) |
0,19 (4,8) |
| 12″ | 15,00 (381,0) |
15,06 (382,5) |
14,25 (362,0) |
14,31 (363,5) |
13,50 (342,9) |
13,44 (341,4) |
15,44 (392,2) |
15,00 (381,0) |
0,25 (6,4) |
0,19 (4,8) |
| 14″ | 16,25 (412,8) |
16,31 (414,3) |
15,50 (393,7) |
15,56 (395,2) |
14,75 (374,7) |
14,69 (373,1) |
16,69 (423,9) |
16,25 (412,8) |
0,25 (6,4) |
0,19 (4,8) |
| 16″ | 18,50 (469,9) |
18,56 (471,5) |
17,62 (447,6) |
17,69 (449,3) |
16,75 (425,5) |
16,69 (423,9) |
18,94 (481,0) |
18,50 (469,9) |
0,25 (6,4) |
0,19 (4,8) |
| 18″ | 21,00 (533,4) |
21,06 (535,0) |
20,12 (511,0) |
20,19 (512,8) |
19,25 (489,0) |
19,19 (487,4) |
21,44 (544,6) |
21,00 (533,4) |
0,25 (6,4) |
0,19 (4,8) |
| 20″ | 23,00 (584,2) |
23,06 (585,8) |
22,00 (558,8) |
22,06 (560,3) |
21,00 (533,4) |
20,94 (531,9) |
23,44 (595,4) |
23,00 (584,2) |
0,25 (6,4) |
0,19 (4,8) |
| 24″ | 27,25 (692,2) |
27,31 (693,7) |
26,25 (666,8) |
26,31 (668,3) |
25,25 (641,4) |
25,19 (639,8) |
27,69 (703,3) |
27,25 (692,2) |
0,25 (6,4) |
0,19 (4,8) |
Class 150 Tongue & Groove Flange Dimensions
| Nominal Pipe Size | ASME B16.5 Large Tongue | ASME B16.5 Large Tongue | Gasket Table | Number | Size of | Bolt Torque | Comp Force | Maximum Gasket | Internal | Minimum Rec’d | Minimum Rec’d | Maximum Rec’d/Avail. | Preferred |
| Pipe Sizes | Contact Inside Daimeter | Contact Outside Daimeter | Contact Area | Of | Bolts | at 60ksi Stress | Per Bolt @ 60ksi | Stress Avail. | Pressure Class | Gasket Stress | Bolt/Torque | Stress Of Gasket | Bolt/Torque |
| (inches) | (inches) | (inches) | (sq.inches.) | Bolt | (inches) | (ft.lbs.) | (psi) | (psi) | (psig) | (psi) | (ft.lbs.) | (psi) | (ft.lbs.) |
| 0.5 | 1.00 | 1.38 | 0.71 | 4 | 0.50 | 60 | 7560 | 42594 | <300 | 4800 | 7 | 10000 | 14 |
| 0.75 | 1.31 | 1.69 | 0.89 | 4 | 0.50 | 60 | 7560 | 33791 | <300 | 4800 | 9 | 10000 | 18 |
| 1 | 1.50 | 2.00 | 1.37 | 4 | 0.50 | 60 | 7560 | 22013 | <300 | 4800 | 13 | 10000 | 27 |
| 1.25 | 1.88 | 2.50 | 2.13 | 4 | 0.50 | 60 | 7560 | 14186 | <300 | 4800 | 20 | 10000 | 42 |
| 1.5 | 2.12 | 2.88 | 2.98 | 4 | 0.50 | 60 | 7560 | 10137 | <300 | 4800 | 28 | 10000 | 59 |
| 2 | 2.88 | 3.62 | 3.78 | 4 | 0.63 | 120 | 12120 | 12839 | <300 | 4800 | 45 | 10000 | 93 |
| 2.5 | 3.38 | 4.12 | 4.36 | 4 | 0.63 | 120 | 12120 | 11128 | <300 | 4800 | 52 | 10000 | 108 |
| 3 | 4.25 | 5.00 | 5.45 | 4 | 0.63 | 120 | 12120 | 8902 | <300 | 4800 | 65 | 8902 | 120 |
| 3.5 | 4.75 | 5.50 | 6.03 | 8 | 0.63 | 120 | 12120 | 16067 | <300 | 4800 | 36 | 10000 | 75 |
| 4 | 5.19 | 6.19 | 8.93 | 8 | 0.63 | 120 | 12120 | 10854 | <300 | 4800 | 53 | 10854 | 120 |
| 5 | 6.31 | 7.31 | 10.69 | 8 | 0.75 | 200 | 18120 | 13558 | <300 | 4800 | 71 | 13558 | 200 |
| 6 | 7.50 | 8.50 | 12.56 | 8 | 0.75 | 200 | 18120 | 11541 | <300 | 4800 | 83 | 11541 | 200 |
| 8 | 9.38 | 10.62 | 19.47 | 8 | 0.75 | 200 | 18120 | 7446 | <300 | 4800 | 129 | 7446 | 200 |
| 10 | 11.25 | 12.75 | 28.26 | 12 | 0.88 | 320 | 25140 | 10675 | <300 | 4800 | 144 | 10675 | 320 |
| 12 | 13.50 | 15.00 | 33.56 | 12 | 0.88 | 320 | 25140 | 8990 | <300 | 4800 | 171 | 8990 | 320 |
| 14 | 14.75 | 16.25 | 36.50 | 12 | 1.00 | 490 | 33060 | 10868 | <300 | 4800 | 216 | 10868 | 490 |
| 16 | 16.75 | 18.50 | 48.42 | 16 | 1.00 | 490 | 33060 | 10923 | <300 | 4800 | 215 | 10923 | 490 |
| 18 | 19.25 | 21.00 | 55.29 | 16 | 1.13 | 710 | 43680 | 12639 | <300 | 4800 | 270 | 12639 | 710 |
| 20 | 21.00 | 23.00 | 69.08 | 20 | 1.13 | 710 | 43680 | 12646 | <300 | 4800 | 269 | 12646 | 710 |
| 24 | 25.25 | 27.25 | 82.43 | 20 | 1.25 | 1000 | 55740 | 13525 | <300 | 4800 | 355 | 13525 | 1000 |
Class 300 Tongue & Groove Flange Dimensions
| Nominal Pipe Sizes | ASME B16.5 Large Tongue | ASME B16.5 Large Tongue | Gasket Table | No. | Size of | Torque Of Bolt | Comp Force | Maximum Gasket | Internal | Minimum Rec’d | Minimum Rec’d | Maximum Rec’d/Avail. | Preferred |
| NPS | Contact Inside Daimeter | Contact Outside Daimeter | Contact Area | Of | Bolts | at 60ksi Stress | Per Bolt @ 60ksi | Stress Avail. | Pressure | Stress Of Gasket | Bolt/Torque | Gasket Stress | Bolt/Torque |
| (inech) | (inech) | (inech) | (sq.inech.) | Bolts | (inech) | (ft.lbs.) | (psi) | (psi) | (psig) | (psi) | (ft.lbs.) | (psi) | (ft.lbs.) |
| 0.5 | 1.00 | 1.38 | 0.71 | 4 | 0.50 | 60 | 7560 | 42594 | <800 | 6200 | 12 | 10000 | 14 |
| 0.75 | 1.31 | 1.69 | 0.89 | 4 | 0.63 | 120 | 12120 | 54174 | <800 | 6200 | 21 | 10000 | 22 |
| 1 | 1.50 | 2.00 | 1.37 | 4 | 0.63 | 120 | 12120 | 35290 | <800 | 6400 | 28 | 10000 | 34 |
| 1.25 | 1.88 | 2.50 | 2.13 | 4 | 0.63 | 120 | 12120 | 22742 | <800 | 6400 | 43 | 10000 | 53 |
| 1.5 | 2.12 | 2.88 | 2.98 | 4 | 0.75 | 200 | 18120 | 24298 | <800 | 6400 | 64 | 10000 | 82 |
| 2 | 2.88 | 3.62 | 3.78 | 8 | 0.63 | 120 | 12120 | 25679 | <800 | 6400 | 46 | 10000 | 47 |
| 2.5 | 3.38 | 4.12 | 4.36 | 8 | 0.75 | 200 | 18120 | 33273 | <800 | 6400 | 60 | 10000 | 60 |
| 3 | 4.25 | 5.00 | 5.45 | 8 | 0.75 | 200 | 18120 | 26618 | <800 | 6400 | 88 | 10000 | 75 |
| 3.5 | 4.75 | 5.50 | 6.03 | 8 | 0.75 | 200 | 18120 | 24021 | <800 | 6400 | 99 | 10000 | 83 |
| 4 | 5.19 | 6.19 | 8.93 | 8 | 0.75 | 200 | 18120 | 16227 | <800 | 6400 | 125 | 10000 | 123 |
| 5 | 6.31 | 7.31 | 10.69 | 8 | 0.75 | 200 | 18120 | 13558 | <800 | 6400 | 156 | 10000 | 148 |
| 6 | 7.50 | 8.50 | 12.56 | 12 | 0.75 | 200 | 18120 | 17312 | <800 | 6400 | 131 | 10000 | 116 |
| 8 | 9.38 | 10.62 | 19.47 | 12 | 0.88 | 320 | 25140 | 15496 | <800 | 6400 | 205 | 10000 | 207 |
| 10 | 11.25 | 12.75 | 28.26 | 16 | 1.00 | 490 | 33060 | 18718 | <800 | 6400 | 219 | 10000 | 262 |
| 12 | 13.50 | 15.00 | 33.56 | 16 | 1.13 | 710 | 43680 | 20826 | <800 | 6400 | 319 | 15000 | 511 |
| 14 | 14.75 | 16.25 | 36.50 | 20 | 1.13 | 710 | 43680 | 23933 | <800 | 6600 | 287 | 15000 | 445 |
| 16 | 16.75 | 18.50 | 48.42 | 20 | 1.25 | 1000 | 55740 | 23021 | <800 | 6600 | 401 | 15000 | 652 |
| 18 | 19.25 | 21.00 | 55.29 | 24 | 1.25 | 1000 | 55740 | 24194 | <800 | 6400 | 439 | 15000 | 620 |
| 20 | 21.00 | 23.00 | 69.08 | 24 | 1.25 | 1000 | 55740 | 19365 | <800 | 6400 | 484 | 15000 | 775 |
| 24 | 25.25 | 27.25 | 82.43 | 24 | 1.50 | 1600 | 84300 | 24546 | <800 | 6400 | 662 | 15000 | 978 |
Major Tongue and Groove Flanges Export Countries
United Arab Emirates (UAE), Jordan, Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, United States of America (USA), Singapore, Malaysia, Azerbaijan, Armenia, Georgia, Egypt, Algeria, Nigeria, South Africa, Kenya, Morocco, Ethiopia, Ghana, Tanzania, Sudan, Uganda, Angola.