Stainless Steel 347 / 347h Pipe & Tube Manufacturer, Supplier, and Stockists in India

Stainless Steel 347 / 347H Pipe & Tube products are high-performance austenitic stainless steel grades known for their exceptional resistance to intergranular corrosion, high-temperature strength, and excellent mechanical properties. These alloys are stabilized with columbium (niobium), which helps prevent carbide precipitation during welding and prolonged exposure to high temperatures. The 347H variant contains a higher carbon content than 347, offering better high-temperature creep resistance, making it ideal for heat exchangers, furnace parts, and high-temperature chemical processing.

Samay Steel and Engineering Co. is a prominent manufacturer, stockist, and exporter of Stainless Steel 347 / 347H Pipe & Tube. Known for precision manufacturing and strict quality control, the company delivers these products in seamless, welded, ERW, and fabricated forms. Samay Steel and Engineering Co. serves industries such as petrochemical, oil and gas, thermal, marine, and power generation, offering customized solutions that meet international standards like ASTM A312, A213, and A269.

With an extensive global reach, Samay Steel and Engineering Co. exports Stainless Steel 347 / 347H Pipe & Tube to countries across the Middle East, including Oman, Qatar, Saudi Arabia, UAE, and Kuwait. Their commitment to timely delivery and top-tier quality has earned them a solid reputation in these regions, especially where high-performance and heat-resistant piping materials are critical to infrastructure and energy projects.

In Europe, the company has expanded its presence in countries like Spain and Germany by supplying durable and corrosion-resistant piping solutions that meet the stringent requirements of European markets. Similarly, in North America, Samay Steel and Engineering Co. supplies Stainless Steel 347 / 347H Pipe & Tube to major clients in the USA and Canada, fulfilling both small-scale and bulk industrial orders with precision.

Stainless Steel 347 / 347h Pipe & TubeP Specifications

Samay Steel and Engineering Co. caters to several regions in Africa and other parts of the world, strengthening its position as a global leader in stainless steel piping solutions. The company ensures all its Stainless Steel 347 / 347H Pipe & Tube products undergo rigorous inspection and testing before shipment, ensuring quality compliance and maximum customer satisfaction.

Whether for high-pressure applications or environments requiring superior corrosion resistance, Stainless Steel 347 / 347H Pipe & Tube from Samay Steel and Engineering Co. offers the reliability, performance, and global supply chain support needed to meet demanding industrial needs worldwide.

Chemical Composition of Stainless Steel 347 / 347h Pipe & Tube

Specification	Details
Grades	Stainless Steel 347 / 347H
UNS Number	S34700 / S34709
Standards	ASTM A312, A213, A269, A358, A249
Form	Seamless, Welded, ERW, Fabricated
Pipe & Tube Size Range	1/8” NB to 24” NB (for pipes), 6.35 mm OD to 101.6 mm OD (for tubes)
Thickness	0.5 mm to 20 mm
Length	Single Random, Double Random & Cut Length
Schedules (Wall Thickness)	SCH 5, SCH 10, SCH 40, SCH 80, SCH 160, XXS
Type	Round, Square, Rectangular
Finish	Annealed & Pickled, Bright Annealed, Polished
End Types	Plain End, Beveled End, Threaded
Manufacturing Process	Cold Drawn, Hot Finished, Welded
Testing & Certification	PMI Test, Hydro Test, Third Party Inspection, Mill Test Certificates (MTC)
Applications	Heat exchangers, Power plants, Petrochemicals, Refineries, Aerospace

Element	SS 347 (% by weight)	SS 347H (% by weight)
Carbon (C)	≤ 0.08	0.04 – 0.10
Manganese (Mn)	≤ 2.00	≤ 2.00
Phosphorus (P)	≤ 0.045	≤ 0.045
Sulfur (S)	≤ 0.030	≤ 0.030
Silicon (Si)	≤ 1.00	≤ 1.00
Chromium (Cr)	17.0 – 19.0	17.0 – 19.0
Nickel (Ni)	9.0 – 13.0	9.0 – 13.0
Niobium (Cb/Nb)	≥ 10 x C (min 0.30%)	≥ 10 x C (min 0.30%)
Iron (Fe)	Balance	Balance

Mechanical Properties of Stainless Steel 347 / 347h Pipe & Tube

Property	Stainless Steel 347	Stainless Steel 347H
Tensile Strength (min)	515 MPa (75 ksi)	515 MPa (75 ksi)
Yield Strength (min)	205 MPa (30 ksi)	205 MPa (30 ksi)
Elongation (min)	35%	35%
Hardness (max)	95 HRB	95 HRB
Modulus of Elasticity	~193 GPa	~193 GPa
Melting Range	1398 – 1446°C	1398 – 1446°C
Density	7.96 g/cm³	7.96 g/cm³
Impact Strength	Good	Good

Types of Pipes and Tubes

Cities we supply Pipes & Tubes in India :-

Countries we export Pipes & Tubes worldwide :-