STAINLESS STEEL SEAMLESS PIPES 347

Stainless Steel Seamless Pipes347

347 Stainless Steel Seamless pipes | 347 seamless stainless steel pipes | SS 347 Seamless pipes | Exporter of comprehensive range 347 Stainless Steel Seamless pipes | TP347/347H Seamless Stainless Steel Pipe

STAINLESS STEEL SEAMLESS PIPES 347 manufacturer
Suppliers and Exporter of ASTM A312 TP347 STAINLESS STEEL SEAMLESS pipes 347 in India.

Suppliers and Exporters of ASTM A312 TP347 Stainless Steel Pipes in India.

Seamless austenitic stainless steel pipes in TP347H

Specifications : ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
AMS 5512, AMS 5646, AMS 5680
ASME SA 240
ASTM A 240, ASTM A 269, ASTM A 479, ASTM A262 Practice E
MSRR 5632
PWA 300, PWA F17 LCS
UNS S34700, UNS S34709
W. Nr. /EN 1.4550
Sizes (Seamless) : 1/2" NB - 24" NB
Sizes (ERW) : 1/2" NB - 24" NB
Sizes (EFW) : 6" NB - 100" NB
Wall Thickness available : Schedule 5S - Schedule XXS (heavier on request)
Other Materials Testing : NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.
Dimensions : All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.


Alloy 347 1.4550 is a balanced out stainless steel which offers as its principle advantage a magnificent imperviousness to entomb granular erosion taking after presentation to temperature in the chromium carbide precipitation range from 800 to 1500°F (427 to 816°C). Alloy 347 is austenitic chromium steel containing columbium settled by the expansion of columbium and tantalum. 347 Stainless Steel is variation of the essential austenitic 18/8 Grade 304 with included Columbium – the presentation of Columbium balances out the steel and kills carbide precipitation which accordingly causes bury granular erosion. Like 321 stainless, 347 uses columbium as a settling component to amplify its foremost highlight: imperviousness to bury granular erosion. It can be utilized as a part of uses obliging rehashed warming in the scope of 800 and 1650°F (427-899 C).

Sort 347 stainless steel has somewhat enhanced erosion resistance over sort 321 stainless steel in emphatically oxidizing situations. Sort 347 is settled with columbium, it is best for fluid and low temperature situations because of its great imperviousness to inter granular assault. Both 347 and 321 offer great imperviousness to polythionic corrosive anxiety erosion splitting, experienced in oil refineries. The high temperature oxidation resistance of 347 is like that of 304 stainless steel. Helpful to 1500°F

Resistance to General Corrosion :

Sorts 321 and 347 compounds offer comparative imperviousness to general, general erosion as the unstabilized chromium nickel Type 304. Warming for drawn out stretches of time in the chromium carbide precipitation extent may influence the general resistance of Types 321 and 347 in serious destructive media.

The steel has amazing structuring and welding qualities and fantastic durability even at cryogenic temperatures.

Physical Properties

The physical properties of Types 321 and 347 are very comparative and, for all handy purposes, may be thought to be the same. The qualities given in the table may be utilized to apply to both steels.

At the point when appropriately strengthened, the Alloys 321 and 347 stainless steels comprise essentially of austenite and carbides of titanium or columbium. Little measures of ferrite could possibly be show in the microstructure. Little measures of sigma stage may structure amid long time introduction in the 10000F to 15000F (5930C to 8160C) temperature range.

The settled Alloys 321 and 347 stainless steels are not hard enable by warmth treatment.

The general warmth exchange coefficient of metals is dictated by elements notwithstanding warm conductivity of the metal. Much of the time, film coefficients, scaling, and surface conditions are such that not more than 10 to 15% more surface range is needed for stainless steels than for different metals having higher warm conductivity. The capacity of stainless steels to keep up clean surfaces frequently permits preferred warmth exchange over different metals having higher warm conductivity.

Mechanical Properties

Room Temperature Tensile Properties

Least mechanical properties of the balanced out Alloys 321 and 347 chromium-nickel reviews in the tempered condition (20000F [10930C], air cooled) are demonstrated in the table.

Lifted Temperature Tensile Properties

Regular raised temperature mechanical properties for Alloys 321 and 347 sheet/ strip are demonstrated as follows. Quality of these balanced out compounds is unmistakably higher than that of non-settled 304 combinations at temperatures of 10000F (5380C) or more.

High carbon Alloys 321H and 347H (UNS32109 and S34700, separately) have higher quality at temperatures over 10000F (5370C). ASME greatest passable outline stress information for Alloy 347H mirrors the higher quality of this evaluation in correlation to the lower carbon Alloy 347 evaluation. The Alloy 321H is not allowed for Section VIII applications and is constrained to 8000F (4270C) utilization temperatures for Section III code applications.

Heat Treatment

The strengthening temperature range for Alloys 321 and 347 is 1800 to 20000F (928 to 10930C). While the basic role of toughening is to get non-abrasiveness and high malleability, these steels might likewise be push help tempered inside the carbide precipitation run 800 to 15000F (427 to 8160C), with no threat of consequent bury granular consumption. Mitigating strains by toughening for just a couple of hours in the 800 to 15000F (427 to 8160C) territory won't result in any recognizable bringing down in the general consumption resistance, albeit delayed warming inside this reach does have a tendency to bring down the general erosion imperviousness to some degree. As underscored, then again, tempering in the 800 to 15000F (427 to 8160C) temperature reach does not bring about a powerlessness to bury granular assault. For most extreme malleability, the higher tempering scope of 1800 to 20000F (928 to 10930C) is suggested.

Benefits of 347 Stainless Steel

Higher downer stretch and crack properties when contrasted and 304

Perfect for high temperature administration

Overcomes refinement and bury granular erosion concerns

Can be utilized as a part of lifted temperature applications for ASME Boiler and Pressure Vessel Code applications

Because of adjustment the material offers better general consumption resistance when contrasted with 304/304L

Incredible mechanical properties

A high carbon form (347H) is likewise accessible

Pipe Type NB Sizes Sch 5 Sch 10 Sch 40 Sch 80 Sch 160
347 Stainless Steel Seamless Pipes 1/8″
347 Stainless Steel Seamless Pipes 1/4″
347 Stainless Steel Seamless Pipes 3/8″
347 Stainless Steel Seamless Pipes 1/2″
347 Stainless Steel Seamless Pipes 3/4″
347 Stainless Steel Seamless Pipes 1″
347 Stainless Steel Seamless Pipes 1 1/4″
347 Stainless Steel Seamless Pipes 1 1/2″
347 Stainless Steel Seamless Pipes 2″
347 Stainless Steel Seamless Pipes 2 1/2″
347 Stainless Steel Seamless Pipes 3″
347 Stainless Steel Seamless Pipes 4″
347 Stainless Steel Seamless Pipes 5″
347 Stainless Steel Seamless Pipes 6″


Features :

• High creep rupture strength

• Excellent resistance to high-temperature corrosion

• Excellent processing characteristics

Applications :

• Heat exchangers

• High temperature steam service

• High temperature chemical process

• Both 347/347H are used in elevated temperature applications.

Chemical Composition :

Cr Ni Cb+Ta C Si Mn P S Fe
MIN 17.0 9.0 Cb 10xc(Cb 8xc) 0.04 - - - -
MAx 19.0 13.0 1.0 0.08 0.75 2.0 0.045 0.03 Balance