Ring Type Joint Flange (RTJ) China Manufacturer

Name: Ring Type Joint Flange (RTJ)
Brand: Guangxin PipeTech Co., Ltd.
Availability: InStock

RTJ flanges use a metal ring gasket in a machined groove to ensure high-pressure, leak-tight seals.

Contact us

Ring Type Joint Flange (RTJ) Specification

Sizes: ½” to 24”, pressure ratings 300# to 2500#.

RTJ Flange Standards: ASME B16.5, API 6A.

Materials: ASTM A182 F316, A105, and duplex steel.

Used with R-type or RX ring gaskets. Compatible with weld neck and blind flanges.

Specification	Description
Product Name	Ring Type Joint Flange (RTJ)
Size Range	½” to 24”
Pressure Rating	300# to 2500#
Standard Compliance	ASME B16.5, API 6A
Materials	ASTM A182 F316, A105 Carbon Steel, Duplex Steel
Gasket Type	R-type or RX ring gaskets
Compatible Flange Types	Weld Neck, Blind
Connection	Welded
Temperature Range	Depends on material and service conditions
Face Type	Ring Type Joint groove
Surface Finish	Machined as per standard
Testing	Hydrostatic testing; NDT on request
Certification	Material Test Reports (MTR); third-party inspection optional
Applications	Oil & gas, high-pressure piping systems, refineries, petrochemical plants
Customization	Sizes, materials, and pressure ratings to customer requirements

RTJ flanges are designed for high-pressure and high-temperature environments and are used with R-type or RX ring gaskets for metal-to-metal sealing.

Features of Ring Type Joint Flange (RTJ)

The Ring Type Joint Flange (RTJ) is a precision-engineered pipe flange designed for high-pressure and high-temperature applications. The RTJ flange features a specially machined groove that accommodates a metal ring gasket, ensuring a tight and leak-proof seal under extreme conditions. This makes the Ring Type Joint Flange the preferred choice in the oil & gas, petrochemical, and offshore industries, where sealing integrity is critical.
We supply Ring Type Joint Flanges manufactured from premium stainless steel and nickel alloy materials. These materials provide outstanding resistance to corrosion, oxidation, and thermal stress. Whether you require a stainless steel RTJ flange for chemical processing systems or a nickel alloy RTJ flange for sour gas environments, we offer dependable solutions tailored to your specifications.
Our RTJ flanges conform to global standards such as ASME B16.5, API 6A, and MSS-SP-44, ensuring compatibility and safety in demanding installations. They are available in a wide range of sizes and pressure classes, typically from Class 150 to Class 2500, to suit the most rigorous project requirements.
Choosing our Ring Type Joint Flange means you’re selecting a product built for precision, strength, and long-term durability. Our RTJ flanges are widely recognized for their sealing performance, especially in pipelines transporting hazardous or high-pressure media. Trust our stainless steel and nickel alloy Ring Type Joint Flanges for your critical operations.

RTJ Flange Installation

RTJ flange (Ring Type Joint flange) is a high-performance flange designed for high-pressure and high-temperature applications, widely used in industries such as oil & gas, petrochemical, and power generation. The sealing surface of a ring type joint flange features a precision-machined groove that accommodates a metal ring gasket, creating a metal-to-metal seal when the flange bolts are tightened. This design provides exceptional leak resistance and reliability under extreme operating conditions.

Proper RTJ flange installation is critical to ensure optimal sealing performance and system safety. During installation, the ring gasket must be correctly positioned in the groove, and bolts should be tightened in a cross-pattern sequence to achieve uniform load distribution. Surface cleanliness and accurate alignment are also essential to prevent leakage.

As experienced RTJ flange manufacturers, we provide high-precision RTJ flange products manufactured according to international standards such as ASME and API. Our ring type joint flange solutions deliver superior sealing performance, durability, and long service life for demanding industrial environments.

RTJ Flange vs RF Flange

In industrial piping systems, RTJ flange vs RF flange (Raised Face flange) are two widely used sealing face designs. While both are standardized under ASME B16.5, they differ significantly in sealing mechanism, pressure capability, and application environment. Understanding these differences helps engineers select the correct RTJ flange vs RF flange e for specific operating conditions.

A ring type joint flange (RTJ flange) features a precision-machined groove that accommodates a metallic ring gasket. When bolts are tightened, the ring plastically deforms into the groove, forming a highly reliable metal-to-metal seal suitable for extreme pressure and temperature environments. In contrast, RF flanges use soft gaskets such as spiral-wound, PTFE, or graphite that are compressed against the raised sealing surface to achieve sealing.

Feature	RTJ Flange (Ring Type Joint)	RF Flange (Raised Face)
Sealing mechanism	Metal ring gasket compressed in groove	Soft gasket compressed on raised face
Typical pressure class	Class 600–2500	Class 150–300 (most common)
Temperature capability	Very high, suitable for extreme conditions	Moderate, limited by gasket material
Applications	Oil & gas, wellhead, high-pressure pipelines	Chemical plants, utilities, general piping
Cost	Higher due to precision machining	Lower and widely used

Because RTJ flanges provide superior sealing performance in critical services, they are commonly used in upstream oil & gas, offshore platforms, and high-pressure process systems. As professional RTJ flange suppliers and manufacturers, we provide high-precision ring type joint flange solutions designed for demanding industrial environments and compliant with international RTJ flange standards.