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  • ISO, PED & IBR Approved Manufacturer for Stainless Steel and Nickel Alloy Flange & Fittings in India

Stainless Steel 347/347H Flanges

Stainless Steel 347/347H Flanges

Rio Engineering stands as a leading manufacturer in the industrial flange sector, delivering precision-engineered solutions that meet the demanding requirements of modern industrial applications. With decades of experience in metallurgy and manufacturing, the company has established itself as a trusted partner for industries ranging from oil and gas to chemical processing and power generation.

Rio Engineering specializes in producing a comprehensive range of flanges, including weld neck, slip-on, blind, socket weld, and threaded varieties. Their state-of-the-art manufacturing facility employs advanced CNC machining centers, automated welding systems, and precision forging equipment to ensure consistent quality and dimensional accuracy. The company maintains strict adherence to international standards including ASME B16.5, ASME B16.47, and API 6A specifications.

The company sources premium-grade materials including carbon steel, stainless steel, alloy steel, and exotic materials like Inconel and Hastelloy. Each flange undergoes rigorous quality control processes, including dimensional inspection, material verification, and pressure testing. Rio Engineering's ISO 9001:2015 certified quality management system ensures traceability and reliability throughout the manufacturing process.

Rio Engineering's flanges serve critical applications across multiple sectors. In the petrochemical industry, their products withstand extreme pressures and corrosive environments. Power plants rely on their high-temperature flanges for steam and gas turbine applications. The company also serves the pharmaceutical, food processing, and water treatment industries with sanitary and corrosion-resistant flange solutions.

Beyond manufacturing, Rio Engineering provides comprehensive engineering support, including custom design services and technical consultation. Their experienced team works closely with clients to develop application-specific solutions that optimize performance and reduce lifecycle costs. With a commitment to continuous improvement and customer satisfaction, Rio Engineering continues to set industry standards for flange manufacturing excellence, ensuring reliable connections in critical industrial systems worldwide.

Stainless Steel 347/347H Flanges Specification

Specifications : ASTM A182 / ASME SA182
Size : 1/2″ (15 NB) to 48″ (1200NB)
Standards
: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Types of Flanges

Blind Flanges
Socket Weld Flanges
Lapped joint Flanges

RTJ Flanges
Orifice Flanges
Threaded Flanges

Slip on Flanges
Weld Neck Flange
Long Weld Neck Flange

Equivalent Grades Of Stainless Steel 347/347H Flanges

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 347 1.4550 S34700 SUS 347 08Ch18N12B X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H X6CrNiNb18-12

Chemical Composition Of Stainless Steel 347/347H Flanges

Grade C Mn Si P S Cr Cb Ni Fe
SS 347 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 20.00 10xC – 1.10 9.00 – 13.00 62.74 min
SS 347H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 20.00 8xC – 1.10 9.00 – 13.00 63.72 min

Mechanical Properties Of Stainless Steel 347/347H Flanges

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1454 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Applications Industries

Waste Water Treatment
Oil and Gas
Power Generation

Chemical Processing
Petroleum Refining
Ship Building

USA, China, United Arab Emirates, Saudi Arabia, Germany, United Kingdom, Netherlands, Italy, France, Belgium, Australia, Japan, South Korea, Singapore, Malaysia, Vietnam, Indonesia, Thailand, Bangladesh, Nepal, Sri Lanka, South Africa, Egypt, Kenya, Nigeria, Brazil, Mexico, Canada, Russia, Turkey.

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