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Ring Type Joint (RTJ) Flanges
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Ring Type Joint (RTJ) Flanges thumbnail
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Ring Type Joint (RTJ) Flanges

Last Updated: July 18, 2026

Starting From 48Rs/Pcs

A Ring Type Joint (RTJ) flange is a heavy-duty mechanical connection component engineered for high-pressure and high-temperature industrial piping systems. It works by utilizing a deeply machined, concentric metallic groove on its sealing face, which houses a solid metal ring gasket. When the mounting bolts are tightened, the localized compressive force deforms the softer metal ring directly into the flange groove, establishing an absolute, metal-to-metal seal. RTJ flanges are critical safety components in severe-service piping networks, ensuring total structural containment under extreme mechanical stress and volatile pressure spikes.

Technical Specifications of Ring Type Joint (RTJ) Flanges In India

Size Range 1/2" to 24" (Available in Weld Neck, Blind, Slip-On, and Socket Weld configurations)
Material Grades Stainless Steel: ASTM A182 F304, F304L, F316, F316L, F321, F347
Carbon Steel ASTM A105, A350 LF2, A694 F42 to F70
Alloy Steel ASTM A182 F5, F9, F11, F22, F91
High Nickel Alloy Monel 400/K500, Inconel 600/625/718, Incoloy 800/800H/825, Hastelloy C22/C276, Nickel 200/201, Cupronickel (90/10 & 70/30)
Thickness / Pressure Class Pressure Ratings: Class 300, Class 600, Class 900, Class 1500, Class 2500
Dimensional Standard Conforms strictly to ASME B16.5, ASME B16.47 Series A & B, and API 6A
Surface Finish CNC Mirror-Machined Groove (Smooth finish up to 63 µin Ra max), Protective Oil Coated, Zinc Plated, Pickled & Passivated (SS)
Origin Indian / Imported

Sourcing Terms & Timeline

Payment Terms

Letter of Credit / Bank Transfer / Advance

Delivery Package

Mill Test Certificate (MTC) + Inspection Reports

Standard Delivery

2-5 Working Days in Maharashtra region

Custom Cuts Support

Custom length cutting & shearing facilities available

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Benefits and Application of Ring Type Joint (RTJ) Flanges

Benefits

  • Impervious High-Pressure Sealing: The specialized metal-to-metal configuration creates a high-integrity mechanical barrier that easily handles extreme system pressures, preventing hazardous media leaks.

  • Excellent Thermal and Pressure Cycle Resistance: The solid ring assembly expands and contracts uniformly with the flange body, preventing seal blowouts or joint degradation during rapid temperature shifts.

  • Self-Actuating Seal Integrity: Systemic internal pipeline pressure acts directly against the ring gasket, forcing it deeper into the seating groove to reinforce the sealing effect as line pressure increases.

    Applications

    Ring Type Joint (RTJ) flanges are widely deployed across critical industries to secure process connections under severe high-pressure conditions. In upstream oil and gas production, Carbon Steel RTJ flanges are standard on wellheads, Christmas trees, and high-pressure manifold grids to safely contain volatile crude hydrocarbons. Chemical processing complexes rely on Stainless Steel and High Nickel Alloy RTJ flanges to secure reactor vessels and hazardous gas transfer lines, delivering essential protection against extreme localized pitting and volatile chemical corrosion. Within modern thermal power generation stations, heavy-duty Alloy Steel RTJ flanges are integrated into main superheated steam loops, where they manage massive mechanical loads without suffering structural creep. Additionally, offshore marine platforms employ erosion-resistant Cupronickel RTJ configurations in deep-sea drilling lines and high-pressure ballast systems to withstand severe wave vibrations and rapid chloride-accelerated corrosion.

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Procurement Network

Supplying to top industrial contractors

VIVEK INDUSTRIES APEX INFRASTRUCTURE MUMBAI METRO METALLICS GODREJ METALS TATA INFRA
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"Excellent B2B platform. Sourcing high pressure pipe fittings from verified suppliers in Girgaon has saved us massive research hours."

Rajesh K. Shah

SHAH STRUCTURALS LTD.

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