Large Tongue Flange – Jizhong

(ASTM A105, 304, 316, 310, ASME B16.5, MSS SP-44, DIN86029, EN1092-2, Series A/B, PN10–PN160, #150–#2500)

Large tongue flanges are precision-engineered pipe connection components designed to deliver a secure, leak-proof, and durable joint between pipelines. Each connection involves two complementary parts — a tongue flange with a raised face (tongue) and a groove flange with a matching recess. When bolted together, the tongue fits perfectly into the groove, ensuring a tight seal and superior pressure containment.

At Jizhong, we manufacture and supply a full range of large tongue flanges in compliance with global standards such as ASME B16.5, MSS SP-44, DIN86029, and EN 1092-2. Our materials include ASTM A105 carbon steel, SS304, SS316, and SS310, offering excellent performance across a wide variety of applications and operating conditions.

The interlocking tongue and groove design ensures an exceptional seal, making Jizhong large tongue flanges ideal for high-pressure and high-temperature systems. This precision fit minimizes gasket displacement and prevents fluid leakage — a critical factor in safety-sensitive industries.

Jizhong offers large tongue flanges in various grades to meet the most demanding industrial needs:

• ASTM A105 Large Tongue Flanges – Ideal for carbon steel pipelines.
• 304 & 316 Stainless Steel Large Tongue Flanges – Corrosion-resistant and suitable for aggressive environments.
• 310 Stainless Steel Large Tongue Flanges – Withstands high temperatures and oxidation.

All grades are available in #150, #300, #600, #900, #1500, and #2500 pressure ratings, as well as PN10, PN16, PN40, PN64, and PN160 ratings per international specifications.

Jizhong manufactures large tongue flanges conforming to multiple international standards:

• ASME B16.5 and B16.47 Series A/B
• MSS SP-44 (Pipeline Flange Standard)
• DIN86029 and EN 1092-2 (European Flange Standards)

Customers can request our Large Tongue Flanges Dimensions PDF or schedule chart to find exact sizing, drilling, and dimensional data for integration into existing systems.

• Leak-Proof Reliability: The tongue-groove interlock delivers a mechanical seal with minimal gasket stress.
• High Strength: Designed for systems with extreme mechanical and thermal loads.
• Maintenance Friendly: Easy alignment and gasket replacement reduce downtime.
• Dimensional Accuracy: Precision machining ensures compatibility across pipeline assemblies.
• Compliance: Manufactured to meet ASME, ANSI, DIN, and EN standards.

Jizhong large tongue flanges are widely used in:

• Oil & Gas Pipelines – High-pressure fluid transport and offshore platforms.
• Petrochemical Plants – Process lines handling corrosive and hot chemicals.
• Power Generation – Steam, water, and gas systems requiring high integrity joints.
• Water Treatment & HVAC Systems – Reliable sealing under cyclic pressure and temperature variations.
• Marine & Offshore Systems – Resistance to saltwater corrosion and vibration.

Their ability to maintain integrity under demanding conditions makes them the preferred choice for safety-critical pipelines.

1. Operating Pressure & Temperature – Choose the correct rating (#150–#2500 / PN10–PN160).
2. Material Compatibility – Match flange material to pipeline medium (oil, gas, water, steam, etc.).
3. Standard Compliance – Verify alignment with ASME, DIN, or EN specifications used in your system.
4. Gasket Type – Ensure proper gasket selection for media compatibility and pressure resistance.

Jizhong maintains an extensive inventory of Large Tongue Flanges in standard and custom sizes.

📩 Click “Ask for Quote” or contact our sales team to receive the latest price list, dimensions chart, and ready stock details tailored to your project needs.

Jizhong – Precision Engineering for the World’s Piping Systems.