STAINLESS STEEL PIPES 347

ss pipe 347 b

Stainless Steel 347/347H Pipes Supplier, Stockholder And Exporter of Quality Stainless Steel 347/347H Pipes.

Stainless Steel 347/347H Pipes Specification, Chemical Compositions, Price List, Application, Stainless Steel 347/347H Pipes stockiest supplier & exporter.

317/317L Stainless Steel Pipes Product Range

Chemtech Alloys Stainless Steel India Exporters Stainless Steel 347/347H Seamless Pipes

Chemtech Alloys Stainless Steel India Exporters Stainless Steel 347/347H Welded Pipes

Chemtech Alloys Stainless Steel India Exporters Stainless Steel 347/347H Square Pipes

Chemtech Alloys Stainless Steel India Exporters Stainless Steel 347/347H Rectangular Pipes

STAINLESS STEEL PIPES 347 manufacturer
Stainless Steel 347 is a balanced out, austenitic, chromium steel containing columbium which considers the disposal of carbide precipitation, and, subsequently, inter granular erosion. Alloy 347 is settled by the augmentations of chromium and tantalum and offers higher crawl and anxiety break properties than compound 304 and 304L which might likewise be utilized for exposures where sharpening and inter granular erosion are of concern. The expansion of columbium likewise permits Alloy 347 to have fantastic consumption resistance, even better than that of combination 321. 347H is the higher carbon organization type of Alloy 347 and exhibits enhanced high temperature and drag properties.

We have practical experience in the assembling and supply of SS 347 pipe in both standard and non-standard sizes, with curving sweep of 1D to 10D and some other custom bending range. We offer ex-stock conveyance of different standard size and sort SS 347 pipe fittings, SS 347 flanges and SS 347 pipe bends. Our strength is to fabricate and supply huge size created 100% radiography tried SS 347 elbows, SS 347 reducers, SS 347 tees and SS 347 vast distance across manufactured pipes.

Application :

High temperature chemical processes, Furnace parts, Heat exchanger tubes, Pressure vessels and tanks, High temperature steam service, Industrial boilers, High pressure steam pipes, Pulp and paper processing equipment, Radiant super heaters, Oil and petrochemical refineries, Boiler tubes, Heavy duty exhaust systems, General refinery piping.

Key Properties :

High temperature creep properties, inter granular corrosion resistance, Superior corrosion resistance, Superior high temperature properties.

SS 347 Pipe Fittings Production Range :

Specification: ASTM A182 / A403 & ASME SA182 / SA403
Type: Seamless / Welded / Fabricated
Variants: 347, 347H
Bending Radius: R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Range: ½”NB to 48”NB in Sch 10s, 40s, 80s, 160s, XXS.
Dimensions: ANSI/ASME B16.9, B16.28, MSS-SP-43.


Trade Name Grade UNS# Welded Pipe(without Filler Metal) Welded Pipe(with Filler Metal)
347 TP347 S34700 A312 / SA312 A358 / SA358
347H TP347H S34709 A312 / SA312 A358 / SA358

Table 1. Chemical Composition

C Cr Mn Ni P S Si Cb/Ta
347 0.08 max min: 17.0
max: 20.0
2.0 max min: 9.0
max: 13.0
0.04 max 0.30 max 0.75 max min: 10x C
max: 1.0
347H min: 0.04
max: 0.10
min: 17.0
max: 20.0
2.0 max min: 9.0
max: 13.0
0.03 max 0.30 max 0.75 max min: 10x C
max: 1.0

Table 2. Mechanical Properties


Grade Tensile Strength ksi (MPa) min Yield Strength 0.2% ksi offset ksi (MPa) min Elongation (% in 50mm) min Hardness (Brinell) MAX Hardness (Rockwell B) MAX
347/347H 75(515) 30(205) 40 201 95

Table 3. Physical Properties

Density lbm/in3 Coefficient of Thermal Expansion (min/in)-°F Thermal Conductivity BTU/hr-ft-°F Specific Heat BTU/lbm -°F Modules of Elasticity (annealed)2-psi
at 68 °F at 68 – 212°F at 68 – 1832°F 68-932°F at 32 – 212°F in tension (E)
0.288 9.2 11.4 14.7 .12 28 x 106