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Stainless Steel 347 Pipe & Tube

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Stainless Steel 347H Pipe & Tube Manufacturer and Supplier

Stainless Steel 347 Pipe & Tube

SS 347/347H Pipes & Tubes are high-performance austenitic stainless steel products stabilized with columbium (niobium) for superior corrosion resistance and high-temperature durability. Designed for industrial applications, these pipes and tubes offer excellent strength, toughness, and resistance to intergranular corrosion, even in oxidative environments up to 800°C. Seamless pipes provide higher pressure tolerance and creep strength, while welded versions offer a cost-effective alternative without compromising essential performance. These pipes are composed of chromium, nickel, manganese, molybdenum, columbium, and other elements, providing excellent mechanical properties including tensile strength, yield strength, elongation, and hardness.

Key Features of SS 347/347H Pipes & Tubes

  • High-Temperature Strength: Excellent creep and stress rupture properties make them suitable for elevated temperature service.
  • Corrosion Resistance: Outstanding resistance to oxidation and intergranular corrosion, even in strongly oxidizing environments.
  • Mechanical Properties: Excellent toughness at both high and cryogenic temperatures.
  • Fabrication & Welding: Superior ductility, machinability, and weldability, ensuring ease of forming and joining.
  • Material Composition: Stabilized with niobium (columbium) and tantalum, which enhances intergranular resistance and improves strength at high temperatures.
inverted-commas

SS ASTM A312 TP347H Seamless Pipes, SS 347 Tubing , SS 347 Welded Tube, ASTM A358 Stainless Steel 347H EFW Pipe Supplier, ASTM A213 Stainless Steel 347 Tubes Exporter, Stainless Steel 347 Pipes Manufacturer in India.

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Manufacturing & Supplying SS 347/347H Pipes & Tubes

At Sachin Steel Center, we specialize in manufacturing and supplying high-quality Stainless Steel 347 and 347H Pipes & Tubes, designed to perform reliably under elevated temperatures and demanding environments. With excellent creep strength, high-temperature resistance, and superior corrosion resistance, our SS 347/347H products are widely used across industries that demand durability and precision.

At Sachin Steel Center, we manufacture and supply SS 347 / 347H Pipes & Tubes in a wide range of forms to meet diverse industrial requirements. Our product range includes seamless pipes and tubes for high-strength, leak-proof applications, welded and ERW pipes suitable for heavily welded or large-diameter projects, and round, square, and rectangular pipes in both standard and customized shapes. We also offer custom dimensions to meet specific client specifications. Every product undergoes rigorous testing and inspection to ensure dimensional accuracy, mechanical integrity, and defect-free performance. From careful raw material selection to precise manufacturing and secure packaging, our quality control processes follow strict international standards, delivering pipes and tubes that meet global benchmarks. With state-of-the-art machinery, a wide range of sizes, thicknesses, and standards, Sachin Steel Center is equipped to handle bulk, customized, and urgent orders, offering competitive pricing, safe packaging, and timely delivery to both domestic and international clients.

Types of Stainless Steel 347H Pipe

seamless-pipes

SS 347H Seamless Tube

Welded Pipe

SS TP347 ERW Pipes

seamless-tubes

SS 347 EFW Pipe

Welded Tube

SS 347 Welded Pipes

erw

SS 347 Round Pipe

Square Pipe

SS 347H Square Pipe

Request Quote on Types of SS 347 Pipes
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Stainless Steel UNS S34709 Welded Pipes, UNS S34700 ERW Pipes Dealer, DIN 1.4961 Seamless Tubes, ASTM A213 SS TP347 Tubes Supplier in India, Stainless Steel 347 pipe manufacturer in India, SS 347H Welded Pipes, Stainless Steel 347 Plain End Welded Pipe

Stainless Steel 347H Pipe Specification

Alloy 347 SpecificationStainless Steel 347, DIN 1.4550 SS 347
ASTM A312 Stainless Steel Seamless Pipe Size4 to 219mm W. T.: 0.5 to 20mm
Stainless Steel UNS S34709 Welded Pipe Size5.0 mm – 1219.2 mm
DIN 1.4961 SS 347H EFW Pipe size5.0 mm – 1219.2 mm
WERKSTOFF NR. 1.4550 SS 347 Pipe Swg & Bwg10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
TP347 A312 Pipe ScheduleSCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
SS 347 Swg & Bwg10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
347 Stainless Steel Tube wall thickness0.020″ –0.220″, (special wall thicknesses available)
ASTM A 358 SS 347 LengthSingle Random, Double Random, Standard & Cut length Pipe & Tube
ASTM A312 TP 347 Stainless Steel FinishPolished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
UNS S34700 FormRound, Hydraulic, ‘U’ bent or Hollow,LSAW, Boiler, Straight Pipe, Clad Pipe, Rectangular, Square Pipe Etc
Stainless Steel 347 TypeWelded, Seamless, ERW, EFW, Fabricated Pipe, ‘U’ bent or Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Tube etc
ASTM A 358 SS 347 EndPlain End, Beveled End, Treaded Pipe
ASTM A312 Stainless Steel MarkingAll 347 Stainless Steel Pipe are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
ASTM A 312 SS 347 ApplicationOil Pipe & Tube, Gas Pipe & Tube, Fluid Pipe & Tube, Boiler Pipe & Tube, Heat exchanger Tube
DIN 1.4550 SS 347 Value Added ServiceDraw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc.
TP347 SS Specialize in
  • 347 Stainless Steel Large Diameter Pipe
  • Alloy 347 Capillary Tube
  • GOST 08Ch18N12B Heat Exchanger &
  • SS TP347 Condenser Tube
GOST 08Ch18N12B Test CertificateManufacturer Test Certificate
Laboratory Test Certificate from Govt. Approved Lab.
Under Third Party Inspection

Stainless Steel 347H Pipe Chemical Compositions

Grade C Mn Si P S Cr Mo Ni N
347 min. – – – – – 17.0 2.00 9.0 –
max. 0.08 2.0 1.00 0.045 0.030 20.0 3.00 13.0 –
347H min. 0.04 – – – – 17.0 3.00 9.0 –
max. 0.10 2.0 1.00 0.045 0.030 19.0 4.00 13.0 –

347 Stainless Steel Pipe Mechanical Analysis

GradeTensile Strength (MPa) minYield Strength 0.2% Proof (MPa) minElongation (% in 50mm) minHardness
Rockwell B (HR B) maxBrinell (HB) max
3475152054095201
347H5152054092201

Equivalent Grades for 347 Stainless Steel Pipe

GradeUNS NoOld BritishEuronormSwedish SSJapanese JIS
BSEnNoName
347S34700–X6CrNiNb18-101.4550–––
347HS34709––1.4961–––

Size of Stainless Steel 347/347H Pipe & Tube

ASTM A312 SS 347 Pipe OD
mm		Pipe WT
mm		in.SchKg/m
13.721.651/410S0.50
13.722.241/440S0.64
13.723.021/480S0.81
17.151.653/810S0.64
17.152.313/840S0.86
17.153.203/880S1.12
21.342.111/210S1.02
21.342.771/240S1.29
21.343.731/280S1.65
26.672.113/410S1.30
26.672.873/440S1.71
26.673.913/480S2.23
33.402.77110S2.13
33.403.38140S2.54
33.404.55180S3.29
33.406.352)11604.30
42.162.771¼10S2.73
42.163.561¼40S3.44
42.164.851¼80S4.53
42.166.352)1¼1605.69
48.262.771½10S3.16
48.263.681½40S4.11
48.265.081½80S5.49
60.332.77210S3.99
60.333.91240S5.52
60.335.54280S7.60
60.338.742)216011.29
73.033.052½10S5.35
73.035.162½40S8.77
73.037.012½80S11.59
88.903.05310S6.56
88.905.49340S11.47
88.907.62380S15.51
88.9011.132)316021.67
101.603.053½10S7.53
101.605.743½40S13.78
101.608.083½80S18.92
114.303.05410S8.50
114.306.02440S16.32
114.308.56480S22.67
114.3013.492)416034.05
141.306.55540S22.10
141.309.53580S31.44
141.3015.882)516049.87
168.283.4610S14.04
168.287.11640S28.69
168.2810.97680S43.21
168.2814.27612054.75
168.2818.262)616068.59
219.088.18840S43.20
219.0812.7880S65.63
219.0818.23812091.30
219.0823.012)8160112.97

Dimensions Standard of Stainless Steel 347/347H Pipe & Tube

Nominal Pipe Size Outside Diameter (mm) Nominal Wall Thickness Schedule
NPS DN OD SCH5s SCHl0s SCH 10 SCH 20 SCH 30 SCH40s SCH STD SCH 40 SCH 60 SCH80s SCH XS SCH 80 SCH 100 SCH 120 SCH 140 SCH 160 SCH XXS
1/8 6 10.3   1.24       1.73 1.73 1.73   2.41 2.41 2.41          
1/4 8 13.7   1.65       2.24 2.24 2.24   3.02 3.02 3.02          
3/8 10 17.1   1.65       2.31 2,31 2.31   3.20 3.20 3.20          
1/2 15 21.3 1.65 2.11       2.77 2.77 2.77   3.73 3.73 3.73       4.78 7.47
3/4 20 26.7 1.65 2.11       2.87 2.87 2.87   3.91 3.91 3.91       5.56 7.82
1 25 33.4 1.65 2.77       3.38 3.38 3.38   4.55 4.55 4.55       6.35 9.09
1 1/4 32 42.2 1.65 2.77       3.56 3.56 3,56   4.85 4.85 4.85       6.35 9.70
1 1/2 40 48.3 1.65 2.77       3.68 3.68 3.68   5.08 5.08 5.08       7.14 10.15
2 50 60.3 1.65 2.77       3.91 3.91 3.91   5.54 5.54 5.54       8.74 11.07
2 1/2 65 73 2.11 3.05       5.16 5.16 5.16   7.01 7.01 7.01       9.53 14.02
3 80 88.9 2.11 3.05       5.49 5.49 5.49   7.62 7.62 7.62       11.13 15.24
3 1/2 90 101.6 2.11 3.05       5.74 5.74 5.74   8.08 8.08 8.08          
4 100 114.3 2.11 3.05       6.02 6.02 6.02   8.56 8.56 8.56   11.13   13.49 17.12
5 125 141.3 2.77 3.40       6.55 6.55 6.55   9.53 9,53 9.53   12.70   15.88 19.05
6 150 168.3 2.77 3.40       7.11 7.11 7.11   10.97 10.97 10.97   14.27   18.26 21.95
8 200 219.1 2.77 3.76   6.35 7.04 8.18 8.18 8.18 10.31 12.70 12.70 12.70 15.09 18.26 20.62 23.01 22.23
10 250 273.1 3.40 4.19   6.35 7.80 9.27 9.27 9.27 12.70 12.70 12.70 15.09 18.26 21.44 25.40 28.58 25.40
12 300 323.9 3.96 4.57   6.35 8.38 9.53 9.53 10.31 14.27 12.70 12.70 17.48 21.44 25.40 28.58 33.32 25.40
14 350 355.6 3.96 4.78 6.35 7.92 9.53   9.53 11.13 15.09   12.70 19.05 23.83 27.79 31.75 35.71  
16 400 406.4 4.19 4.78 6.35 7.92 9.53   9.53 12.70 i6.66   12.70 21.44 26.19 30.96 36.53 40.49  
18 450 457.2 4.19 4.78 6.35 7.92 11.13   9.53 14.27 19.05   12.70 23.83 29.36 34.93 39,67 45.24  
20 500 508 4.78 5.54 6.35 9.53 12.70   9.53 15.09 20.62   12.70 26.19 32.54 38.10 44.45 50.01  
22   559 4.78 5.54 6.35 9.53 12.70   9.53   22.23   12.70 28.58 34.93 41.28 47.63 53.98  
24 600 610 5.54 6.35 6.35 9.53 14.27   9.53 17.48 24.61   12.70 30.96 38.89 46.02 52.37 59.54  
26   660     7.92 12.70     9.53       12.70            
28 700 711     7.92 12.70 15.88   9.53       12.70            
30   762 6.35 7.92 7.92 12.70 15.88   9.53       12.70            
32 800 813     7.92 12.70 15.88   9.53 17.48     12.70            
34   884     7.92 12.70 15.88   9.53 17.48     12.70            
36 900 914     7.92 12.70 15.88   9.53 19.05     12.70            
38   965             9.53       12.70            
40 1000 1016           9.53   12.70                  
42   1067       12.70 15.88   9.53 19.05     12.70            
44 1100 1118             9.53       12.70            
46   1168             9.53       12.70            
48 1200 1219             9.53     12.70              
52   1321                                  
56 1422                                    
60 1524                                    

347H Stainless Steel Welded Pipe Weight Chart

Size OD SCH 160S SCH 80S SCH 40S SCH 20S SCH 10S SCH 5S
mm in. mm WT Weight (kg/m) WT Weight (kg/m) WT Weight (kg/m) WT Weight (kg/m) WT Weight (kg/m) in. WT Weight (kg/m)
8 1/4 13.7 – – 3.02 0.82 2.24 0.64 2 0.58 1.65 0.49 0.54 1.2 0.37
6 1/8 10.3 – – 2.41 0.47 1.73 0.37 1.5 0.33 1.24 0.28 0.405 1 0.23
15 1/2 21.3 4.75 1.97 3.73 1.62 2.77 1.29 2.3 1.07 2.11 1.02 0.84 1.65 0.81
10 3/8 17.2 – – 3.2 1.12 2.31 0.87 2 0.74 1.65 0.63 0.675 1.2 0.47
20 3/4 26.7 5.56 2.93 3.91 2.93 2.87 1.71 2.5 1.52 2.11 1.3 1.05 1.65 1.05
32 1¼ 42.2 6.35 5.69 4.85 4.56 3.56 3.44 3 2.9 2.77 2.73 1.66 1.65 1.65
25 1 33.4 6.35 4.3 4.55 3.29 3.38 2.54 2.5 2 2.77 2.13 1.315 1.65 1.03
40 1½ 48.3 7.14 7.35 5.08 5.49 3.68 4.11 3 3.35 2.77 3.11 1.9 1.65 1.93
65 2½ 73.03 9.53 14.91 7.01 11.59 5.16 8.77 4 6.81 3.05 5.26 2.875 2.11 3.7
50 2 60.3 8.74 11.26 5.54 7.6 3.91 5.52 3.5 4.25 2.77 3.99 2.375 1.65 2.4
80 3 88.9 11.13 21.3 7.62 15.51 5.49 11.47 4 8.37 3.05 6.45 3.5 3.5 4.51
125 5 141.3 15.88 49.11 9.53 31 6.55 21.08 5 16.8 3.4 11.6 5.563 2.77 9.5
100 4 114.3 13.49 33.54 8.56 22.66 6.02 16.07 4.5 12.18 3.05 8.36 4.5 2.11 5.85
150 6 168.3 8.24 67.53 10.97 42.56 7.11 28.68 6.35 25.36 3.4 13.82 6.625 2.77 11.35
250 10 273.05 28.58 172.33 12.7 81.55 9.27 60.31 6.35 41.77 4.19 27.8 10.75 3.4 22.61
200 8 219.08 23.01 111.27 12.7 64.64 8.18 43.18 6.35 33.31 3.76 20 8.625 2.77 14.8
300 12 323.85 33.32 238.68 12.7 97.43 9.53 73.85 6.35 49.7 4.57 36 12.75 3.96 31.25
400 16 406.4 – – – – 12.07 123.3 7.92 77.82 4.78 47.34 16 4.19 41.6
350 14 355.6 – – – – 11.13 98.54 7.92 67.9 4.78 41.3 14 3.96 34.35
450 18 457.2 – – – – 14.27 155.86 7.92 87.74 4.78 53.32 18 4.19 46.85
600 24 609.6 – – – – 17.48 255.41 9.53 141.11 6.35 94.52 24 5.54 82.57
500 20 508 – – – – 15.09 183.42 9.53 117.14 5.54 68.64 20 4.78 59.31

Physical Properties of 347/347H Stainless Steel Pipes And Tubes

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 0.12 28 x 106

Pressure Ratings of Stainless Steel 347/347H Pipe & Tube

Schedule of Pipe Size of Seamless Pipe
(inches)		 (°F) Temperature
    200 100 300 500 400 600 700 650 750
80 1″ 3634 4213 3265 2791 3002 2659 2528 2580 2501
40 1″ 2629 3048 2362 2019 2171 1924 1824 1867 1810
40 1.5″ 1947 2257 1750 1496 1608 1425 1354 1383 1340
160 1″ 5296 6140 4759 4068 4375 3876 3684 3761 3646
160 1.5″ 3984 4619 3580 3060 3291 2916 2772 2829 2743
80 1.5″ 2744 3182 2466 2108 2267 2009 1909 1949 1889
80 2″ 2369 2747 2129 1820 1957 1734 1648 1682 1631
40 2″ 1640 1902 1474 1260 1355 1201 1141 1165 1129
40 3″ 1558 1806 1400 1196 1287 1140 1084 1106 1072
160 2″ 3880 4499 3486 2980 3205 2840 2699 2755 2671
160 3″ 3312 3840 2976 2544 2736 2424 2304 2352 2280
80 3″ 2202 2553 1979 1691 1819 1612 1532 1564 1516
80 4″ 1909 2213 1715 1466 1577 1397 1328 1355 1314
40 4″ 1321 1531 1187 1014 1091 967 919 938 909
40 5″ 1158 1342 1040 889 956 847 805 822 797
160 4″ 3106 3601 2791 2386 2566 2273 2161 2206 2138
80 5″ 1709 1981 1535 1312 1411 1250 1189 1213 1176
160 5″ 2945 3414 2646 2262 2433 2155 2049 2091 2027
80 6″ 1650 1913 1483 1267 1363 1208 1148 1172 1136
40 6″ 1052 1219 945 808 869 770 732 747 724
40 8″ 926 1073 832 711 765 678 644 657 637
160 6″ 2836 3289 2549 2179 2343 2076 1973 2014 1953
160 8″ 2738 3175 2460 2103 2262 2004 1905 1944 1885
80 8″ 1459 1692 1311 1121 1205 1068 1015 1036 1005
80 10″ 1388 1609 1247 1066 1147 1016 966 986 956
40 10″ 840 974 755 945 694 615 584 596 578
160 10″ 2714 3147 2439 2085 2242 1986 1880 1927 1868

Applications for Stainless steel 347h pipe

    • Petrochemical Industry
    • Chemical Industry
    • Oil and Gas Industry
    • Pulp & Paper Indusry
    • Power Plant Industry
    • Food Processing Industry
    • Pharmaceuticals Industry
    • Energy Industry
    • Aerospace Industry
Application Industries

Frequently Asked Questions About Stainless steel 347 pipe

The 347 grade belongs to an austenitic stainless steel grade. The Stainless Steel 347 Pipe is designed with an outstanding chemical composition consisting of chromium and nickel. Columbium and tantalum are embedded in these pipes to help stabilize them in the system.

The main difference between 347 and 347H stainless steel lies in the carbon content. 347H has a higher carbon percentage, which provides greater creep strength and better performance in long-term high-temperature service. While both resist intergranular corrosion, 347H is preferred for applications requiring enhanced strength at elevated temperatures.

If you require higher strength and superior resistance to intergranular corrosion, stainless steel 347 should be your first choice. However, if you need resistance to staining and corrosion and have lower strength requirements, stainless steel 316 should be considered.

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