Collection: RTJ Flange (Ring Type Joint Flange)

Overview

RTJ Flange (Ring Type Joint Flange) is specially designed for high-pressure and high-temperature piping systems.
It uses a metal ring gasket seated in a precision-machined groove to achieve metal-to-metal sealing, ensuring extremely reliable leak prevention under severe service conditions.

RTJ Flanges are widely used in oil & gas pipelines, refineries, petrochemical plants, offshore platforms, and power generation systems where safety and performance are critical.

Product Features

• Metal-to-Metal Sealing: Ring gasket provides superior sealing compared to flat face and raised face flanges.

• High Pressure Resistance: Suitable for ASME Class 600 – 2500 pressure ratings.

• Precision Groove Machining: Ensures perfect gasket seating and sealing performance.

• Ring Types Available: R, RX, BX profiles according to ASME B16.20.

• Material Options: Carbon Steel, Stainless Steel, Alloy Steel.

• Custom Fabrication: Available per drawings and project specifications.

• Excellent Reliability: Designed for critical service pipelines and harsh operating conditions.

Standards Compliance

Our RTJ Flanges are manufactured according to international standards:

• ASME B16.5 / ASME B16.47

• ASME B16.20 (Ring Gasket Standard)

• API 6A (for oil & gas applications)

• EN 1092-1 (RTJ type on request)

• GOST Standards (RTJ Flange available upon request)

Full dimensional accuracy and strict quality control ensure compatibility with global pipeline systems.

Materials & Grades

• Carbon Steel: ASTM A105, ASTM A350 LF2

• Stainless Steel: ASTM A182 F304 / F316 / F321

• Alloy Steel: ASTM A182 F11 / F22 / F91

• Special Materials: Duplex Stainless Steel, Inconel, Monel (optional)

Ring Joint Gasket Types

RTJ Flanges are compatible with the following gasket profiles:

• R Type (Oval & Octagonal) – Standard for most RTJ applications

• RX Type – Higher sealing pressure than R type

• BX Type – Designed for very high pressure (Class 900 and above)

Size & Pressure Range

• Size Range: DN15 – DN1200 (1/2" – 48")

• Pressure Class: ASME Class 600 / 900 / 1500 / 2500

• Face Type: Ring Type Joint (RTJ)

• Surface Finish: Precision machined sealing groove

Applications

RTJ Flanges are widely used in:

• Oil & Gas transmission pipelines

• Petrochemical and refinery systems

• Offshore platforms and FPSO projects

• Power plants (high-pressure steam lines)

• High-pressure process pipelines

Especially suitable for environments with high pressure, high temperature, and high safety requirements.

Why Choose Our RTJ Flanges

• High Precision CNC Machining for RTJ grooves

• Strict Quality Inspection: Dimensional check, hardness test, PMI

• Full Standards Coverage: ASME, API, EN, GOST

• Custom Manufacturing: Drawing-based production available

• Global Export Experience: Trusted supplier for international EPC and distributors