Supplier of Tongue And Groove Pipe Flange | ANSI/ASME B16.5, B 16.47 Series A & B
A tongue and groove flange is a type of pipe flange with a unique sealing design that includes a raised "tongue" on one flange and a corresponding recessed "groove" on the other. The tongue fits precisely into the groove, creating a tight and leak-proof seal when paired with a gasket. This configuration is particularly effective for systems requiring high sealing integrity under high pressure or vacuum conditions.
groove and Tongue flanges are often used in applications where precise alignment and a reliable seal are critical, such as in chemical processing, oil and gas, and power generation industries. They are typically manufactured in materials like carbon steel, stainless steel, and alloys to meet varying industrial needs. This flange type complies with standards such as ASME B16.5 and ASME B16.47, ensuring compatibility and performance in diverse piping systems.
Ample Alloys is a leading manufacturer, supplier, and exporter of premium industrial piping components, renowned for its commitment to quality and innovation. With decades of experience in the industry, the company specializes in a diverse range of products, including tongue and groove flange, and customized solutions.

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Tongue And Groove Flange Specifications
Size Range
15mm ( 1/2" NPS ) up to 600mm ( 24" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12
Flange Face Type
T—Tongue Face, G—Groove Face
Stainless Steel
ASTM A182 F 304, 304L, 304H, 316, 316L, 316H, 317, 317L, 321, 321H, 310, 310S, 347, 904L, etc.
Standards / Dimension
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN
Carbon Steel
ASTM A105/A105N (SA105N), LTCS A350 LF2, A694
Alloy Steel
ASTM A182 / SA182 - F1 / F5 / F9 / F11 / F12 / F22 / F91
Pressure Class
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64.
Duplex & Super Duplex
ASTM A182 / ASME SA182 - S31803, S32205, 2205, S32750, S32760, S32950, 2507.
MTC
EN 10204 3.2 and EN 10204 3.1, Test Certificates certifying NACE MR0175, NACE MR0103
ANSI B16.5 Tongue and Groove Flange - Dimensions & Weight
NPS | R | S | T | U | W | X | Y | Z |
---|---|---|---|---|---|---|---|---|
1/2 | 35.05 | 18.28 | 35.05 | 25.4 | 36.57 | 19.81 | 36.57 | 23.87 |
3/4 | 42.92 | 23.87 | 42.92 | 33.27 | 44.45 | 25.4 | 44.45 | 31.75 |
1 | 50.8 | 30.22 | 47.75 | 38.1 | 52.32 | 31.75 | 49.27 | 36.57 |
1¼ | 63.5 | 38.1 | 57.15 | 47.75 | 65.02 | 39.62 | 58.67 | 45.97 |
1½ | 73.15 | 44.45 | 63.5 | 53.84 | 74.67 | 45.97 | 65.02 | 52.32 |
2 | 91.94 | 57.15 | 82.55 | 73.15 | 93.72 | 58.67 | 84.07 | 71.37 |
2½ | 104.64 | 68.32 | 95.25 | 85.85 | 106.42 | 69.85 | 96.77 | 84.07 |
3 | 127 | 84.07 | 117.34 | 107.95 | 128.52 | 85.85 | 119.12 | 106.42 |
3½ | 139.7 | 96.77 | 130.04 | 120.65 | 141.22 | 98.55 | 131.82 | 119.12 |
4 | 157.22 | 109.47 | 144.52 | 131.82 | 158.75 | 111.25 | 146.05 | 130.04 |
5 | 185.67 | 136.65 | 172.97 | 160.27 | 187.45 | 138.17 | 174.75 | 158.75 |
6 | 215.9 | 162.05 | 203.2 | 190.5 | 217.42 | 163.57 | 204.72 | 188.97 |
8 | 269.74 | 212.85 | 254 | 238.25 | 271.52 | 214.37 | 255.52 | 236.47 |
10 | 323.85 | 266.7 | 304.8 | 285.75 | 325.37 | 268.22 | 306.32 | 284.22 |
12 | 381 | 317.5 | 361.95 | 342.9 | 382.52 | 319.02 | 363.47 | 341.37 |
14 | 412.75 | 349.25 | 393.7 | 374.65 | 414.27 | 350.77 | 395.22 | 373.12 |
16 | 469.9 | 400.05 | 447.54 | 425.45 | 471.42 | 401.57 | 449.32 | 423.92 |
18 | 533.4 | 450.85 | 511.04 | 488.95 | 534.92 | 452.37 | 512.82 | 487.42 |
20 | 584.2 | 501.65 | 558.8 | 533.4 | 585.72 | 503.17 | 560.32 | 531.87 |
24 | 692.15 | 603.25 | 666.75 | 641.35 | 693.67 | 604.77 | 668.27 | 639.82 |
Tongue And Groove Flange Standards
Tongue and groove flanges are manufactured and designed to comply with a variety of international standards to ensure compatibility, safety, and performance in piping systems.
- ASME/ANSI Standards (American):
- ASME B16.5 – Pipe Flanges and Flanged Fittings (NPS 1/2" to 24").
- ASME B16.47 – Large Diameter Steel Flanges (Series A & B, NPS 26" to 60").
- ASME B16.36 – Orifice Flanges.
- ASME B16.48 – Line Blanks (Spectacle, Spade, and Spacer Flanges).
- ANSI B16.1 – Cast Iron Flanges and Flanged Fittings.
- ANSI B16.42 – Ductile Iron Pipe Flanges and Flanged Fittings.
- ISO Standards (International)
- ISO 7005-1 – Steel Flanges for General Applications.
- ISO 7005-2 – Cast Iron Flanges.
- ISO 7005-3 – Copper Alloy Flanges.
- EN Standards (European)
- EN 1092-1 – Steel Flanges.
- EN 1092-2 – Cast Iron Flanges.
- EN 1092-3 – Copper Alloy Flanges.
- EN 1092-4 – Aluminium Alloy Flanges.
- DIN Standards (German)
- DIN 2527 – Blind Flanges.
- DIN 2576 – Slip-On Flanges (PN 10).
- DIN 2633 – Weld Neck Flanges (PN 16).
- DIN 2634 – Weld Neck Flanges (PN 25).
- DIN 2635 – Weld Neck Flanges (PN 40).
- JIS Standards (Japanese)
- JIS B2220 – Steel Pipe Flanges.
- GOST Standards (Russian)
- GOST 12820 – Flat Flanges for Steel Pipe Joints.
- GOST 12821 – Steel Welded Flanges for High-Pressure Applications.
- GOST 33259 – Flange Connections for Industrial Equipment and Pipelines.
- BS Standards (British)
- BS 4504 – Circular Flanges for Pipes, Valves, and Fittings.
- BS 10 – Specification for Flanges and Bolting.
- API Standards (Oil & Gas)
- API 6A – Wellhead and Christmas Tree Equipment Flanges.
- API 605 – Large-Diameter Carbon Steel Flanges (merged into ASME B16.47 Series B).
- AWWA Standards (Waterworks)
- AWWA C207 – Steel Ring Flanges for Waterworks Service.
- MSS Standards (Manufacturer's Standardization Society)
- MSS SP-44 – Steel Pipe Flanges (merged into ASME B16.47 Series A).
- MSS SP-51 – Flanges for Glass-Lined Equipment.
- Material-Specific Standards (ASTM)
- ASTM A105 – Carbon Steel Forged Flanges.
- ASTM A182 – Alloy and Stainless Steel Forged Flanges.
- ASTM A350 – Carbon and Low-Alloy Steel Flanges for Low-Temperature Service.
- ASTM A694 – High-Strength Carbon and Alloy Steel Flanges for High-Pressure Applications.
- Other Regional and Specialized Standards
- KS B1511 – Korean Standard Flanges.
- NF E29-206 – French Standard Flanges.
- SANS 1123 – South African Standard for Steel Flanges.
Why Ample Alloys For Industrial Tongue And Groove Flange!
Choose Ample Alloys for your tongue and groove flange needs to experience unmatched quality, service, and value.
Global Expertise
With years of experience serving clients across industries, Ample Alloys is a trusted partner for reliable and high-performance flanges.
Timely Deliveries
Our efficient logistics network ensures on-time delivery, supporting your project timelines without compromise.
Advanced Manufacturing
Equipped with state-of-the-art technology, we produce flanges with exact specifications for seamless integration into piping systems.
Comprehensive Material Options
From carbon steel to stainless steel and specialized alloys, we offer flanges suitable for diverse industrial requirements.
They are commonly used in applications requiring high sealing integrity, such as chemical processing, oil and gas, power generation, and water treatment systems.
Their precise fit and sealing design ensure minimal leakage, even under high-pressure or vacuum conditions, making them highly reliable.
While they are durable, reusability depends on the condition of the flanges and gaskets after disassembly. Damaged parts should be replaced to ensure sealing integrity.