A M Industries is a leading name in the metal industry, recognized for delivering exceptional Stainless Steel 347H Pipes Manufacturers. Renowned for their strength, durability, and exceptional resistance to extreme conditions, these pipes and tubes are indispensable across various industries. This blog delves into the specifics of Stainless Steel 347H Pipes, shedding light on their advantages, applications, and types.

Close-up of Stainless Steel 347H Pipes showing smooth, seamless structure.

Stainless Steel 347H is a high-carbon variant of grade 347, specifically designed for high-temperature and high-stress environments. Pipes and tubes made from this alloy exhibit superior corrosion resistance, especially against intergranular corrosion. This makes them ideal for prolonged use in heat-intensive industries.

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Being a high-carbon version, Stainless Steel 321H attains greater resistance to creep and strength and hence find their application in conditions encountered in the industrial environment at higher temperatures. Normally, tubes and pipes made of such alloy contain 0.04 to 0.10% carbon content with the addition of other mentioned elements to give the element strength and make it highly durable. These features have easily positioned A M Industries to be one of the largest worldwide Stainless Steel 347H Pipes Suppliers.

Stainless Steel 347H Pipes Manufacturers in India, Stainless Steel 347H Pipes Suppliers in India, Stainless Steel 347H Pipes Stockists in India, Stainless Steel 347H Pipes Exporters in India

Another unique factor about Stainless Steel 321H tubes is their dimensions. The outer diameter of the tubes ranges from 6mm to 250mm, while the thickness ranges from 0.3mm to 50mm. Such a wide range of sizes enables the industries to choose the exact dimensions for specific applications. They find application in petroleum refineries, boiler tubing, high-pressure steam lines, heavy-duty exhaust systems, and manifolds. A M Industries is one of the leading stockists that has been consistently availing a widely appreciated inventory of Stainless Steel 347H Pipes, which are demanded by various customers.

stainless steel 321H pipes are seamless and welded. Seamless pipes manufactured from a single piece of steel have higher tensile strength and yield strength than 515MPa and 205MPa, respectively.On the other hand, the welded ones are cost-effective and resistant to corrosion. The improved techniques of fusion welding in making UNS S32109 ERW pipes enhance the strength and capabilities of elongation, which ensure a very long service life. As a result of this, such welded pipes are in demand from industries all over the world, and hence, A M Industries becomes a name among the exporters of Stainless Steel 347H Pipes.

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The AISI 321H Schedule 40 Pipe is specially liked for its workability concerning weldability by standard techniques, hence able to meet all sorts of project demands. Cold-rolled polished pipes in this grade show a smooth surface finish that adds corrosion resistance and imparts a fine polished appearance to make them suitable even for visible installations. These pipes and tubes are customized according to each client's specifications by A M Industries in the best manner to function suitably in all application fields.

Stainless Steel 347H Pipes Specifications

Trade Name

Stainless Steel 347H Pipe & tube

Stainless Steel 347H Seamless Pipe (OD)

21.3 - 660mm ( Inch 1/2” – 26”)

SS 347H SAW

16" - 100" NB

Stainless Steel 1.4961 ERW and HFW

1/2” NB – 24” NB

347H Stainless Steel LSAW / DSAW

16’OD TO 54" OD (8 MM TO 50 MM THK)

Additional Services and Facility

Cutting, Tapping, Threading, Polishing, Beveling, Sawing, Laser/ Water Jet Cutting

Material Test Certificate (MTC) provided by Stainless Steel 347H Pipe suppliers

Ultrasonic Testing (UT), ISO 9001:2005, EN 10204 3.1, IBR, NDE, ISO 14001:2015, PED, Radiographic Testing (RT), EIL

Equivalent Standards

GB, CSA, AWWA, AISI, KS, NFA, IS, SAE, ASTM, UNI, BS, EN, JIS, API, ANSI, SS, ISO, DIN, GOST

347H SS Pipe end

BLE -Bevel large end, BE -Beveled end, BOE-Beveled One End, BSE -Bevel small end, BBE -Bevel both ends, POE -Plain One End, TOE -Treaded One End, PBE -Plain Both Ends, TBE -Treaded Both Ends

ASTM A312 TP 347H Pipe Length

Single Random Length (SRL), 40FT, SRL, DRL, Custom Length, Double Random Length (DRL), 6000mm, 3000mm, 2000mm, 20FT, 12000mm

347H Wall Thickness

SCH-80S, SCH-STD, SCH-80, SCH-40, SCH-5S, SCH-XS, SCH-10, SCH160, SCH-40S, SCH-5, SCH-XXS, SCH-10S

Marking of Stainless Steel 347H Pipe suppliers

Specification of Stainless Steel 347H Pipe
Material Grade
Nominal Pipe Sizes (NPS)
Wall Thickness or Schedule No.
Manufacturing Process (Seamless/ EFW/ ERW/ Welded)
Heat Number
Dealer/ Supplier or Manufacturer’s Name or Custom Logo - as required

Surface Finish & Delivery Condition

Annealed & Pickled, Mirror, Polished, Bright Annealed, NO.1, Polish, 8K, HL, BA, Cold Drawn, 4K, NO.4, 2B

Different methods used by Stainless Steel 347H Pipe manufacturers

Submerged Arc Welded (SAW), Longitudinally Submerged Arc Welded (LSAW), Cold Drawn Seamless (CDS), Electro Fusion Seam Welded (EFSW), CDW, Seamless, Welded, Fabricated, Horizontal Submerged Arc Welded (HSAW), Hot Finish Seamless (HFS), Electric Resistance Welded (ERW), 100% X Ray/ Gamma Ray Welded, Extrusion

Origin of SS 347H Pipe material

Japan, Asian, Africa, Gulf, Indian, USA, Korean, European, Latin-American, UK, Japanese, Chinese, American, Ukraine, Russian

Certificate

IBR, EN-10204:3.2, Sour-Service, SSC, NACE, HIC, EN-10204:3.1

Dual certified supplier

Dual certified SS 347H Pipe suppliers in India, accordance to certify ASTM A312 TP347H and ASME SA 312 TP347H American specifications

Test

Flux Leakage examination or Magnetic Flaw detection, H2 SERVICE, HIC- Hydrogen-induced Cracking, Micro, Bend TestBend test / Guided Bend, Surface Roughness Test, Impact, Hydro test, Metallurgical & Stereo Microscopy, Ultrasonic Test, Non Destructive Testing , Tensile, Stress , Eddy current, NACE MR0175, Salt Spray Test to test Phosphating, Positive Material Identification (PMI), Hardness Test, IBR, Ultrasonic, TM0177, Fine Grain, Radiography, Chemical, SSC- Sulfide Stress Corrosion Cracking, Ferrite, Hardness, Mechanical, TM0284, Charpy V Impact Test, Creep, Macro, Charpy V-Notch Test, Straightness, Burst Test, IGC- Intergranular Corrosion Test

STANDARD	WERKSTOFF NR.	UNS	JIS	GOST	EN
SS 347H	1.4961	S34709	SUS 347H	–	X6CrNiNb18-12

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 347H	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 - 19.00	0.10 max	9.00 - 12.00	5(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 %

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