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SS 347 / 347H Pipes and Tubes

SS 347 / 347H Pipes and Tubes

Stainless Steel 347H Tubing, Stainless Steel 347 Tube, UNS S34700 Pipes and Tubes, DIN 1.4550 Pipes and Tubes, SS 347H Pipes, UNS S34709 Pipes and Tubes, Stainless Steel 347 Pipes, ASTM A213 SS 347H Tube Suppliers, Grade 347H Stainless Steel Seamless Pipes, ASTM A269 SS 347 Welded Tube Manufacturers in Mumbai, India.

At Virgin Engineers, we are committed to manufacturing and supplying top-grade stainless steel 347 pipes and tubes designed for critical industrial requirements. Columbium (niobium) helps these stainless steel grades resist damage from corrosion between the grains, especially after welding. We produce these pipes and tubes in a wide range of sizes, finishes, and thicknesses to cater to industries with elevated temperature and corrosive media challenges.

Our Stainless Steel 347H pipes and tubes are available in seamless, welded, ERW, and EFW variants. Sizes range from 1/8” NB to 36” NB, with wall thickness options covering SCH 5 to SCH XXS, and we also support customized dimensional specifications. All products are manufactured in compliance with global standards, such as ASTM A312, A213, A269, and ASME SA312, SA213, and SA269, with precision in dimensional tolerances, finish, and mechanical strength. Ends are supplied as plain, beveled, or threaded, depending on the client's requirement.

Stainless Steel 347 / 347H Pipe and Tube

DIN 1.4961 Pipes and Tubes, SS 347 Seamless Tube, ASME SA358 SS 347H EFW Pipes, SS 347H Piping Exporters in India, Stainless Steel 347 Welded Pipes, SS 347 ERW Tubes, SS 347 Pipe and Tube Supplier in Mumbai, India.

SS 347 Round Pipes, SS 347 Threaded Pipes and Tubes Stockist, SUS 347 Polished Pipes & Tubes, ASTM A312 SS 347H Seamless Pipes Exporters, Grade 347H SS Coiled Tubing, SS 347H Square Tubes.

Niobium treatment helps the SS 347 grade resist issues such as carbide precipitation and stress-induced corrosion. It is ideal for use in welded constructions. SS 347H, the high-carbon version, offers improved creep strength and is better suited for high-temperature service. At Virgin Engineers, we manufacture and test every product batch with strict metallurgical standards to ensure performance under pressure and thermal stress. Each 347 pipe and tube is marked with a heat number and grade details for traceability.

With a reliable production process and quality-focused workforce, we maintain consistent stock availability of SS 347 and 347H pipes and tubes in both domestic and export packaging. Our infrastructure is capable of handling bulk orders while ensuring timely deliveries. All products undergo dimensional inspection and mechanical tests to ensure conformance with customer specifications and industry benchmarks.

Testing the Product:

Positive Material Identification (PMI): Confirms grade and alloy composition before dispatch.
Hydrostatic Pressure Test: Ensures strength and leak-free performance under internal pressure.
Ultrasonic Testing: Detects internal imperfections or discontinuities in the pipe.
Mechanical & Tensile Testing: Measures elongation, yield, and tensile strength properties.
Dimensional and Visual Inspection: Ensures tolerance, straightness, and surface finish are as per standards.

Documentation:

Mill Test Certificates (EN 10204 3.1): Provided for each batch with chemical and mechanical properties.
Third-Party Inspection Reports (TPIs): Available on request from approved agencies.
Raw Material Traceability Reports: Documenting the material origin and batch tracking.
Heat Treatment Records: Certifying the thermal processing stages as per standard.
Compliance Certificates: Available for NACE, IBR, PED, and other project-based requirements.

Packaging of Product:

Strapped in bundles with protective wrapping: For safe transportation and handling.
Export-quality wooden crates or pallets: This guarantees a delivery without any damage to clients abroad.
End caps on pipes: Prevent dirt, moisture, and impact during shipping.
Waterproof wrapping: Protects against environmental moisture during transit.
Customized packaging options: Provided as per client's logistics and project needs.

Quality Assurance:

Conforms to ASTM, ASME, and international standards: This ensures global reliability and performance.
Batch-wise inspection and full traceability: Maintained through documented control procedures.
The in-house quality control (QC) system, which includes a third-party option, provides a dual assurance system designed to meet buyer requirements.
Certified ISO 9001 Quality System: Backed by quality manuals, SOPs, and inspection plans.

Material Testing:

Spectro Analysis for Chemical Composition: Confirms alloying elements in each batch.
IGC (Intergranular Corrosion) Testing: Checks weld-area corrosion resistance.
Hardness Test: Assesses surface and core hardness.
Flaring & Flattening Tests: Evaluates the pipe's mechanical deformation limits.
Microstructure Examination: Ensures consistent grain flow and freedom from segregation.

Specification

ASTM

ASTM A312, A213, A269, A358, A249, DIN, ASTM, BS and all International Standards.

Type

Seamless, ERW, Welded, Fabricated, LSAW.

Thickness

0.35mm to 6.35mm OD in thickness ranging from 0.1mm to 1.2mm

Pipe Size / Tube Size

1/2" to 16"NB / 1/8" to 30"NB

ERW / EFW Pipe Size

1/2" to 24"NB / 6"NB to 100"NB

Other

Length - Single Random, Double Random and Cut Lenght.
End - Plain End, Beveled End, Threaded etc.

STANDARD	WERKSTOFF NR.	UNS	JIS	EN
SS 347	1.4550	S34700	SUS 347	X6CrNiTi18-10
SS 347H	1.4961	S34709	SUS 347H	X12CrNiTi18-9

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 347	0.08 max	2 max	1 max	0.045 max	0.030 max	17 - 19	0.10 max	9 - 12	5(C+N) – 0.70 max
SS 347H	0.04 – 0.10	2 max	1 max	0.045 max	0.030 max	17 - 19	0.10 max	9 - 12	4(C+N) – 0.70 max

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1457 °C (2650 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %