SS 347/347H High Pressure Pipe Fittings

Stainless Steel 347 Pipe Fittings, Stainless Steel 347H Pipe Fittings, Stainless Steel 347 Pipe Fittings Suppliers, Stainless Steel 347H Pipe Fittings Suppliers, DIN 1.4961 High Pressure Pipe Fittings, UNS S34700 High Pressure Pipe Fittings, SS Gr.347 Industrial High Pressure Pipe Fittings Manufacturers in Mumbai, India.

Virgin Engineers is a leading manufacturer, exporter, and supplier of Stainless Steel 347 and 347H High Pressure Pipe Fittings, offering high-quality forged fittings for demanding industrial applications across global markets. The product range includes elbows, tees, reducers, couplings, unions, caps, and other forged fittings manufactured in standard and customized specifications to meet diverse project requirements. Available in multiple sizes, schedules, pressure ratings, and end connections, these fittings are widely used in the oil & gas, petrochemical, fertilizer, power generation, pharmaceutical, and chemical processing industries.

Stainless Steel 347 is a columbium (niobium)-stabilized austenitic stainless steel known for its excellent resistance to general corrosion, oxidation, and intergranular corrosion after exposure to temperatures between 427°C and 816°C. Unlike conventional stainless steel grades, Alloy 347 prevents chromium carbide precipitation by allowing columbium to combine with carbon, preserving chromium at the grain boundaries. This stabilization provides superior corrosion resistance in welded components and high-temperature piping systems, making SS 347 pipe fittings a reliable choice for critical process applications.

Stainless Steel 347H is the higher carbon version of Alloy 347, specifically engineered to deliver improved creep strength and enhanced mechanical properties at temperatures above 538°C (1000°F). Its controlled carbon content of 0.04–0.10% makes it suitable for high-temperature pressure vessels, boilers, heat exchangers, and process piping where long-term thermal stability is essential. Many heats are available with dual certification, simplifying material procurement for industrial projects requiring both grades.

The forged fittings are manufactured in sizes ranging from 1/8" to 4" NPS, available in Schedule 40, 80, and 160, with NPT, BSP, and Socket Weld (SW) end connections. Produced in accordance with ASTM A182 F347/F347H, ASME B16.11, and MSS SP-97 standards, these fittings provide excellent dimensional accuracy, high-pressure performance, and long service life. Every shipment is supplied with complete quality documentation, including hydrostatic test reports, heat analysis certificates, and material test certificates (MTC), ensuring full compliance with international quality standards.

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Properties of the product-
There are several commendable qualities found in the product due to which it has become highly popular and found used in numbers of industrial applications. The high tensile strength, good dimensional accuracy, fine surface finishes, resistance to high temperature, resistance to high pressure, good formability, anti-corrosive body, and long-lastingness are the feature of it. Also, it resists pitting, stress corrosion cracking and general corrosion.

Manufacturing details-
The manufacturing of the product is conducted under the strict guidance of professional experts that are having very good skills and knowledge of product creation. The development of the product is done by using the superior quality of raw materials that are well tested. The use of advanced technology and modern tools has to lead the fabrication of product excellence and it can be thus used at any temperature ranges. The designing of SS 347 / 347H High pressure Pipe Fittings is done as per set manufacturing norms and national and international product standards.

Testing-
The testing of manufactured ranges of pipe fittings is done to check the product quality. The tests done are like positive material identification test, intergranular corrosion test, hardness test, pitting resistance test, chemical test, mechanical test, etc.

Documenting-
To the buyers the documents provide is including raw material test report, NABL approved lab test report, heat treatment chart, material traceability report, packaging list, guarantee letter, etc. Also, the test certifications like MTC as per EN 10204/3.1B, 100% radiography test report, third-party inspection report, raw material certificate, and buyers report, etc. All these are enough to prove the product quality.

Stainless Steel S34700/S34709 High Pressure Pipe Fittings are manufactured and controlled to international standards such as ASTM, ASME, BS, MSS, EN, DIN or WERKSTOFF. Our products undergo stringent quality tests before they are dispatched.

The material tests performed on Stainless Steel 347/347H High Pressure Pipe Fittings are PMI Testing, Ultrasonic Test, Mechanical Testing, Spectro Tests for Chemical Analysis of the grade, Flaring Test, IGC, etc. are some of the tests conducted at our facility. We welcome stage wise inspection from any of your representative or third party inspection agencies.

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