Carbon Steel RTJ Flange (Ring Type Joint Flange) – ASTM A105, ASME B16.5 Class 600–2500-1
Carbon Steel RTJ Flange (Ring Type Joint Flange) – ASTM A105, ASME B16.5 Class 600–2500-2
Carbon Steel RTJ Flange (Ring Type Joint Flange) – ASTM A105, ASME B16.5 Class 600–2500-3
Carbon Steel RTJ Flange (Ring Type Joint Flange) – ASTM A105, ASME B16.5 Class 600–2500-4
Carbon Steel RTJ Flange (Ring Type Joint Flange) – ASTM A105, ASME B16.5 Class 600–2500

Carbon Steel RTJ Flange (Ring Type Joint Flange) – ASTM A105, ASME B16.5 Class 600–2500

Carbon Steel RTJ Flange (Ring Type Joint Flange) – ASTM A105, ASME B16.5 Class 600–2500

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🔹 Product Overview

Carbon Steel RTJ Flanges (Ring Type Joint Flanges) are designed for high-pressure and high-temperature piping systems where maximum sealing performance is required.
They utilize a precision-machined metal ring gasket seated in a groove on the flange face to form a reliable metal-to-metal seal under extreme service conditions.

Manufactured from high-quality carbon steel such as ASTM A105 and ASTM A350 LF2, these RTJ flanges are widely applied in critical pipeline systems for oil & gas, refinery, petrochemical, and power generation industries.

They comply with major international standards including ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS, and GOST 12821 / GOST 33259, ensuring compatibility with global engineering projects.

🔹 Key Features

  • Material: Carbon Steel ASTM A105 / ASTM A350 LF2

  • Sealing Type: Ring Type Joint (RTJ) metal gasket

  • Pressure Rating: Class 600 – Class 2500

  • Facing Type: RTJ groove (R, RX, BX gasket types available)

  • Standards: ASME B16.5, ASME B16.47, EN, DIN, JIS, GOST

  • Forged construction for high mechanical strength

  • Excellent resistance to high pressure, vibration, and thermal cycling

  • Reliable leak-proof performance for critical services

🔹 Materials & Grades

Common carbon steel grades include:

  • ASTM A105

  • ASTM A350 LF2 (low temperature service)

  • ASTM A694 F42 / F52 / F60 (pipeline projects)

  • EN P245GH / P250GH

  • GOST 20, 09G2S

🔹 Size & Technical Range

  • Size range: 1/2” – 60” (DN15 – DN1500)

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

  • Facing: RTJ (R / RX / BX groove)

  • Manufacturing: Forged and CNC machined

  • Custom dimensions according to drawings

🔹 Applications

Carbon Steel RTJ Flanges are commonly used in:

  • Oil & Gas pipelines

  • Refineries and petrochemical plants

  • Offshore platforms

  • Power generation systems

  • High-pressure steam pipelines

  • Pressure vessels and heat exchangers

They are especially suitable for high-pressure and high-temperature service where leakage is not acceptable.

🔹 Quality Control & Certification

  • Chemical and mechanical testing of raw materials

  • Dimensional inspection

  • Visual inspection

  • PMI testing (optional)

  • NDT testing (UT / MT / PT / RT upon request)

  • EN 10204 3.1 / 3.2 certificates available

🔹 Packaging & Delivery

  • Packed in seaworthy wooden cases or pallets

  • Plastic protectors on RTJ grooves

  • Anti-rust oil coating

  • Clear marking: size, pressure class, material grade, heat number

  • Short lead time for standard sizes

🔹 Why Choose Our Carbon Steel RTJ Flanges

  • Professional manufacturer and exporter for global B2B customers

  • Full compliance with ASME / EN / DIN / GOST standards

  • Stable quality and competitive price

  • Custom fabrication based on drawings or project specifications

  • Fast quotation and technical support

🔹 Request a Quote

To receive an accurate quotation, please provide:

  • Size (DN or inch)

  • Pressure rating (Class)

  • Material grade (A105 / LF2, etc.)

  • Standard (ASME / EN / DIN / GOST)

  • Gasket type (R / RX / BX)

  • Quantity

  • Application or project details

Our technical sales team will respond quickly with a professional quotation.