ASTM A312 Stainless Steel Seamless Pipe Manufacturer in India

Schedule 40 stainless steel pipe Supplier, Buy Stainless steel round pipe at Factory Price

Stainless Steel Pipe is a type of pipe made up of a material that has non – corroding or less corroding steel. The stainless quality is achieved by the addition of other elements, mainly nickel and chromium. The chromium content has to be 10.5% minimum in a material for it to be considered stainless steel. There are different types of stainless steel pipes according to the manufacturing process. The Stainless Steel Seamless Pipe  is manufactured by a drawing procedure that draws the pipe from a single billet. The welded pipes are made through welding strips of stainless steel from end to end to make the pipes. We stock a Pipe from different Brands such as Jindal Stainless Steel Pipes, Sanyo Stainless Steel Pipe, Nssmc Stainless Steel Pipe in different schedule and sizes.

Stainless Steel Seamless Pipe

Stainless Steel Seamless Pipe

ASTM A312 Stainless Steel boiler pipes

ASTM A312 Stainless Steel boiler pipes

ASME B36.19 Stainless Steel Pipe

ASME B36.19 Stainless Steel Pipe

Ready Stock of Stainless Steel Seamless Pipe, Check Electropolished Stainless Steel Pipes Price Per Kg

There are electric resistance weld and electric fusion weld pipes as well. The different standards and specifications cover different attributes of the pipes. The asme b36.19 stainless steel pipe is a standard that governs the wall thickness, the outer diameter and the weights of the pipes. The pipes in this standard range from 1/8 inches to 12 inches with schedules ranging from 5S to 80S. The specification ASTM A312 Stainless Steel boiler pipe stands for boiler pipe classes that are intended for high temperature and high pressure services. There are different finishes such as the electropolished stainless steel pipe which uses an electrochemical process to polish the surface of the pipes. The high temperature stainless steel pipe can be any grade of pipe that can operate under high temperatures. Austenitic Stainless Steel Pipe is one type of stainless steel that has austenite in their crystalline structure. The 304,316 and the 300 series pipes are all austenitic. We are leading stainless steel seamless pipe supplier in different countries like UAE, South Africa, USA, Indonesia etc. Contact us if you are looking for Stainless Steel Pipe Manufacturer in India.

Stainless Steel Pipe

Stainless Steel Pipe

 

Specification of Stainless Steel Pipe

Specification ASME SA312 / ASTM A312
Finish Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
Origin European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material)
Test
  • Hardness Test
  • Flattening Test
  • Pitting Resistance Test
  • Chemical Analysis – Spectro Analysis
  • Micro and MacroTest
  • Flaring Test
  • Intergranular Corrosion (IGC) Test
  • Mechanical Testing Such as Tensile of Area
  • Positive Material Identification – PMI Testing
Marking All Stainless Steel Seamless Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
Thickness exact 0.25, 0.28, 0.32, 0.37, 0.41, 0.51, 0.61, 0.71, 0.91, 1.11, 1.15, 1.41 mm
size 5.0 mm – 1219.2 mm
Outside Diameter 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Thickness Range 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Type Seamless / ERW / Welded / Fabricated / CDW
Form Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
Length Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded
End Protection Plastic Caps
Surface Finish: 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
Delivery Condition Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Inspection, Test Reports Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
Packing Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials Sizes and Specifications other than above can be manufactured on request
Our Presence USA, Canada, Australia, UK, Malaysia, Poland, Iran, Italy, Singapore, UAE
Material Test Certificates (MTC) Material Test Certificates (MTC) as per EN 10204/ 3.1B and EN 10204 3.2
Seamless Pipe size 5.0 mm – 1219.2 mm
Schedule SCH5, SCH10, SCH40, STD, SCH80, SCH160
Pipe End Plain End, Beveled End, Treaded.
Size 4 to 219mm W. T.: 0.5 to 20mm
We can also cut, thread, and groove Stainless Steel Pipes to meet your specifications, jindal stainless steel pipes stockist, We Also Stock sanyo stainless steel pipe, nssmc stainless steel pipe

Stockholder of high temperature stainless steel pipes, ASTM A312 SS Pipes.

Dimensions of Stainless Steel Seamless Pipe

PIPE SCHEDULES WALL THICKNESS (Inches)
Nominal
O.D. Inches
10s
10
40s & Std
40
80s & E.H.
80
160
1/8
.405
.049
.049
.068
.068
.095
.095
1/4
.540
.065
.065
.088
.088
.119
.119
3/8
.675
.065
.065
.091
.091
.126
.126
1/2
.840
.083
.083
.109
.109
.147
.147
.187
3/4
1.050
.083
.083
.113
.113
.154
.154
.218
1
1.315
.109
.109
.133
.133
.179
.179
.250
1 1/4
1.660
.109
.109
.140
.140
.191
.191
.250
1 1/2
1.900
.109
.109
.145
.145
.200
.200
.281
2
2.375
.109
.109
.154
.154
.218
.218
.343
2 1/2
2.875
.120
.120
.203
.203
.276
.276
.375
3
3.500
.120
.120
.216
.216
.300
.300
.437
3 1/2
4.000
.120
.120
.226
.226
.318
.318
4
4.500
.120
.120
.237
.237
.337
.337
.531
4 1/2
5.000
.247
.355
5
5.563
.134
.134
.258
.258
.375
.375
.625
6
6.625
.134
.134
.280
.280
.432
.432
.718
7
7.625
.301
.500
8
8.625
.148
.148
.322
.322
.500
.500
.906
9
9.625
.342
.500
10
10.750
.165
.165
.365
.365
.500
.593
1.125
11
11.750
.375
.500
12
12.750
.180
.180
.375
.406
.500
.687
1.312
14
14.000
.188
.250
.375
.437
.500
.750
1.406
16
16.000
.188
.250
.375
.500
.500
.843
1.593
18
18.000
.188
.250
.375
.562
.500
.937
1.781

Available Types of Stainless Steel Pipe

1 Inch Stainless Steel Pipe
1-1/4 in. Schedule 10 Welded Stainless Steel Pipe
Stainless Steel Square Pipe
Schedule 40 Stainless Steel Pipe
3/8 x 18 in. Threaded Schedule 40 Stainless Steel Pipe
2 in. Schedule 160 Stainless Steel Seamless Pipe
1 in. Weld Schedule 40 A312 Stainless Steel Pipe
6 in. Stainless Steel Polished ID and OD Pipe
3 Inch Stainless Steel Pipe
Electropolished Stainless Steel Pipe
Stainless Steel Rectangular Pipe
Stainless Steel Round Pipe
2 x 24 in. Weld Stainless Steel Pipe
Polished Stainless Steel Pipe
Schedule 10 Stainless Steel Pipe
Astm B36.19 Stainless Steel Pipe
1-1/2 in. Schedule 40 Welded Stainless Steel Pipe
Stainless Steel Pipe Asme Sa312
3 in. Schedule 10 Stainless Steel Pipe
Astm A312 Stainless Steel Pipe
Leading Supplier of ASME B36.19 Stainless Steel Pipe, Stockist of Stainless Steel Seamless Round Pipe

Austenitic Stainless Steel Pipe Stock List

Stainless Steel Pipes 4 inch Ferritic SS Seamless Pipes
Ferritic SS Pipes SS Seamless Pipes
ASTM A312 Stainless Steel Pipes Schedule 5S Chromium SS Seamless Pipes
ASTM B36.19 Stainless Steel Pipes Schedule 40 Super Ferritic SS Pipes
Chromium SS Cold Drawn Seamless Pipes Austenitic SS Precision Pipes
SS Seamless Precision Pipes High pressure SS Pipes
Super Ferritic Cold Drawn Seamless Pipes Chromium SS Electropolished Pipes
Austenitic SS Custom Pipes SS Cold Drawn Pipes
Super Austenitic Stainless Steel Round Pipes Martensitic Stainless Steel Exhaust Pipes
Chromium SS Square Pipes Super Austenitic SS Thin Wall Pipes
Super Austenitic SSRectangular Pipes Small diameter Super Ferritic SS pipes
SS Cold Drawn Pipes Cold Drawn SS Pipes
Schedule 10 Stainless Steel Pipe Schedule 40 Stainless Steel Pipe
Polished Stainless Steel Pipe Electropolished Stainless Steel Pipe
3 Inch Stainless Steel Pipe 1 Inch Stainless Steel Pipe
Stainless Steel Rectangular Pipe Stainless Steel Square Pipe

Price List of Stainless Steel Seamless Pipe

Price list of Stainless Steel Seamless Pipe ASTM A312 Stainless Steel Pipes Price in India (INR) ASTM A312 Stainless Steel Pipes Price in USD ASTM A312 Stainless Steel Pipes Price in UAE Dirham

ASTM A 312 GRADE: TP-304L SIZE(3 INCH X 88.9 MM OD X 3.05 MM THK)

INR 144 1.92 USD 7.06 UAE Dirham

ASTM A 312 GRADE: TP-304L SIZE(1 INCH X 33.4 MM OD X 4.55 MM THK)

INR 144 1.92 USD 7.06 UAE Dirham

ASTM A312 TP 316/316L (NPS 2)(SCH 10) (OD MM 60.32)(W.T.MM2.77)(LENGHT/PC 5-6M)

INR 313 4.18 USD 15.35 UAE Dirham

STAINLESS STEEL PIPES : SIZE - OD : 21.3M, 1/2, PIPE SCH 40S, A312 GR.TP316/316L

INR 436 5.82 USD 21.38 UAE Dirham

ASTM A312 Stainless Steel Pipe Dimensions And Weights

PIPE SIZE OD IN INCHES A.S.A. Pipe Schedules
5s 5 10s 10 40s & Std. 40 60 80s & E.H. 80 120 160 DBL E.H.
1/8 .405   .035.1383 .049.1863 .049.1863 .068.2447 068.2447   0.95.3145 0.95.3145      
1/4 .540   .049.2570 .065.3297 .065.3297 .088.4248 088.4248   .119.5351 .119.5351      
3/8 .675   .049.3276 .065.4235 .065.4235 .091.5676 .091.5676   .126.7338 .126.7338      
1/2 .840 .065.5383 .065.5383 .083.6710 .083.6710 .109.8510 .109.8510   .1471.088 .1471.088   .1871.304 .2941.714
3/4 1.050 .065.6838 .065.6838 .083.8572 .083.8572 .1131.131 .1131.131   .1541.474 .1541.474   .2181.937 .3082.441
1 1.315 .065.8678 .065.8678 .1091.404 .1091.404 .1331.679 .1331.679   .1792.172 .1792.172   .2502.844 .3583.659
1-1/4 1.660 .0651.107 .0651.107 .1091.806 .1091.806 .1402.273 .1402.273   .1912.997 .1912.997   .2503.765 .3825.214
1-1/2 1.900 .0651.274 .0651.274 .1092.085 .1092.085 .1452.718 .1452.718   .2003.631 .2003.631   .2814.859 .4006.408
2 2.375 .0651.604 .0651.604 .1092.638 .1092.638 .1543.653 .1543.653   .2185.022 .2185.022   .3437.444 .4369.029
2-1/2 2.875 .0832.475 .0832.475 .1203.531 .1203.531 .2035.793 .2035.793   .2767.661 .2767.661   .37510.01 .55213.70
3 3.500 .0833.029 .0833.029 .1204.332 .1204.332 .2167.576 .2167.576   .30010.25 .30010.25   .43714.32 .60018.58
3-1/2 4.000 .0833.472 .0833.472 .1204.973 .1204.973 .2269.109 .2269.109   .31812.51 .31812.51     .63622.85
4 4.500 .0833.915 .0833.915 .1205.613 .1205.613 .23710.79 .23710.79 .28112.66 .33714.98 .33714.98 .43719.01 .53122.51 .67427.54
4-1/2 5.000         .24712.53     .35517.61       .71032.53
5 5.563 .1096.349 .1096.349 .1347.770 .1347.770 .25814.62 .25814.62   .37520.78 .37520.78 .50027.04 .62532.96 .75038.55
6 6.625 .1097.585 .1097.585 .1349.290 .1349.290 .28018.97 .28018.97   .43228.57 .43228.57 .56236.39 .71845.30 .86453.16
7 7.625         .30123.57     .50038.05       .87563.08
Medium Type = Wall thickness in inches Bold Type = Steel weight per foot in pounds
SS Seamless Boiler Pipes stockist, Importer of Stainless Steel Seamless Pipes

Chemical Composition of Chromium Stainless Steel Pipe

Grade C Mn Si P S Cr Mo Ni N Ti Fe
304 min. 18.0 8.0
max. 0.08 2.0 0.75 0.045 0.030 20.0 10.5 0.10
304L min. 18.0 8.0
max. 0.030 2.0 0.75 0.045 0.030 20.0 12.0 0.10
304H min. 0.04 18.0 8.0
max. 0.010 2.0 0.75 0.045 0.030 20.0 10.5
SS 310 0.015 max 2 max 0.015 max 0.020 max 0.015 max 24.00 26.00 0.10 max 19.00 21.00 54.7 min
SS 310S 0.08 max 2 max 1.00 max 0.045 max 0.030 max 24.00 26.00 0.75 max 19.00 21.00 53.095 min
SS 310H 0.04 0.10 2 max 1.00 max 0.045 max 0.030 max 24.00 26.00 19.00 21.00 53.885 min
316 min. 16.0 2.03.0 10.0  
max. 0.035 2.0 0.75 0.045 0.030 18.0 14.0  
316L min. 16.0 2.03.0 10.0    
max. 0.035 2.0 0.75 0.045 0.030 18.0 14.0  
316TI 0.08 max 10.00 14.00 2.0 max 0.045 max 0.030 max 16.00 18.00 0.75 max 2.00 3.00
317 0.08 max 2 max 1 max 0.045 max 0.030 max 18.00 20.00 3.00 4.00 57.845 min
SS 317L 0.035 max 2.0 max 1.0 max 0.045 max 0.030 max 18.00 20.00 3.00 4.00 11.00 15.00 57.89 min
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 19.00 9.00 12.00 0.10 max 5(C+N) 0.70 max
SS 321H 0.04 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 19.00 9.00 12.00 0.10 max 4(C+N) 0.70 max
347/ 347H 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 20.00 9.0013.00
410 min. 11.5
max. 0.15 1.0 1.00 0.040 0.030 13.5 0.75
446 min. 23.0 0.10
max. 0.2 1.5 0.75 0.040 0.030 30.0 0.50 0.25
904L min. 19.0 4.00 23.00 0.10
max. 0.20 2.00 1.00 0.045 0.035 23.0 5.00 28.00 0.25

Mechanical Properties of Ferritic Stainless Steel Pipe

Grade Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
304/ 304L 8.0 g/cm3 1400 °C (2550 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 35 %
304H 8.0 g/cm3 1400 °C (2550 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 40 %
310 / 310S / 310H 7.9 g/cm3 1402 °C (2555 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 40 %
306/ 316H 8.0 g/cm3 1400 °C (2550 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 35 %
316L 8.0 g/cm3 1399 °C (2550 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 35 %
317 7.9 g/cm3 1400 °C (2550 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 35 %
321 8.0 g/cm3 1457 °C (2650 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 35 %
347 8.0 g/cm3 1454 °C (2650 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 35 %
904L 7.95 g/cm3 1350 °C (2460 °F) Psi 71000 , MPa 490 Psi 32000 , MPa 220 35 %

Equivalent Grade of Super Ferritic Stainless Steel Pipe

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 304 1.4301 S30400 SUS 304 304S31 08Х18Н10 Z7CN18‐09 X5CrNi18-10
SS 304L 1.4306 / 1.4307 S30403 SUS 304L 3304S11 03Х18Н11 Z3CN18‐10 X2CrNi18-9 / X2CrNi19-11
SS 304H 1.4301 S30409
SS 310 1.4841 S31000 SUS 310 310S24 20Ch25N20S2 X15CrNi25-20
SS 310S 1.4845 S31008 SUS 310S 310S16 20Ch23N18 X8CrNi25-21
SS 310H S31009
SS 316 1.4401 / 1.4436 S31600 SUS 316 316S31 / 316S33 Z7CND17‐11‐02 X5CrNiMo17-12-2 / X3CrNiMo17-13-3
SS 316L 1.4404 / 1.4435 S31603 SUS 316L 316S11 / 316S13 03Ch17N14M3 / 03Ch17N14M2 Z3CND17‐11‐02 / Z3CND18‐14‐03 X2CrNiMo17-12-2 / X2CrNiMo18-14-3
SS 316H 1.4401 S31609
SS 316Ti 1.4571 S31635 SUS 316Ti 320S31 08Ch17N13M2T Z6CNDT17‐123 X6CrNiMoTi17-12-2
SS 317 1.4449 S31700 SUS 317
SS 317L 1.4438 S31703 SUS 317L X2CrNiMo18-15-4
SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9
SS 347 1.4550 S34700 SUS 347 08Ch18N12B X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H X6CrNiNb18-12
SS 904L 1.4539 N08904 SUS 904L 904S13 STS 317J5L Z2 NCDU 25-20 X1NiCrMoCu25-20-5

Stainless Steel Round Pipe Pressure Rating

Pressure Rating (psig)
Pipe Size
(inches)
Pipe Schedule Temperature (oF)
100 200 300 400 500 600 650 700 750
1" 160 6140 5296 4759 4375 4068 3876 3761 3684 3646
80 4213 3634 3265 3002 2791 2659 2580 2528 2501
40 3048 2629 2362 2171 2019 1924 1867 1824 1810
1 1/2" 160 4619 3984 3580 3291 3060 2916 2829 2772 2743
80 3182 2744 2466 2267 2108 2009 1949 1909 1889
40 2257 1947 1750 1608 1496 1425 1383 1354 1340
2" 160 4499 3880 3486 3205 2980 2840 2755 2699 2671
80 2747 2369 2129 1957 1820 1734 1682 1648 1631
40 1902 1640 1474 1355 1260 1201 1165 1141 1129
3" 160 3840 3312 2976 2736 2544 2424 2352 2304 2280
80 2553 2202 1979 1819 1691 1612 1564 1532 1516
40 1806 1558 1400 1287 1196 1140 1106 1084 1072
4" 160 3601 3106 2791 2566 2386 2273 2206 2161 2138
80 2213 1909 1715 1577 1466 1397 1355 1328 1314
40 1531 1321 1187 1091 1014 967 938 919 909
5" 160 3414 2945 2646 2433 2262 2155 2091 2049 2027
80 1981 1709 1535 1411 1312 1250 1213 1189 1176
40 1342 1158 1040 956 889 847 822 805 797
6" 160 3289 2836 2549 2343 2179 2076 2014 1973 1953
80 1913 1650 1483 1363 1267 1208 1172 1148 1136
40 1219 1052 945 869 808 770 747 732 724
8" 160 3175 2738 2460 2262 2103 2004 1944 1905 1885
80 1692 1459 1311 1205 1121 1068 1036 1015 1005
40 1073 926 832 765 711 678 657 644 637
10" 160 3147 2714 2439 2242 2085 1986 1927 1880 1868
80 1609 1388 1247 1147 1066 1016 986 966 956
40 974 840 755 694 645 615 596 584 578

3 Inch Stainless Steel Pipe Sch5 To Sch40 Chart

Pipe Size O.D. Inches 5s TRUE 5 10s TRUE 10 20 30 40s & STD TRUE 40 60
1/8 0.405   0.35 0.049 0.049     0.068 0.068  
    0.1383 0.1863 0.1863     0.2447 0.2447  
1/4 0.54   0.049 0.065 0.065     0.088 0.088  
    0.257 0.3297 0.3297     0.4248 0.4248  
3/8 0.675   0.049 0.065 0.065     0.091 0.091  
    0.3276 0.4235 0.4235     0.5676 0.5676  
1/2 0.84 0.065 0.065 0.083 0.083     0.109 0.109  
  0.5383 0.5383 0.671 0.671     0.851 0.851  
3/4 1.05 0.065 0.065 0.083 0.083     0.113 0.113  
  0.6838 0.6838 0.8572 0.8572     1.131 1.131  
1 1.315 0.065 0.065 0.109 0.19     0.133 0.133  
  0.8678 0.8678 1.404 1.404     1.679 1.679  
1 1/4 1.66 0.065 0.065 0.109 0.109     0.14 0.14  
  1.107 1.107 1.806 1.806     2.273 2.273  
1 1/2 1.9 0.065 0.065 0.109 0.109     0.145 0.145  
  1.274 1.274 2.638 2.638     2.718 2.718  
2 2.375 0.065 0.065 0.109 0.109     0.154 0.154  
  1.604 1.604 2.638 2.638     3.653 3.653  
2 1/2 2.875 0.083 0.083 0.12 0.12     0.203 0.203  
  2.475 2.475 3.531 3.531     5.793 5.793  
3 3.5 0.083 0.083 0.12 0.12     0.216 0.216  
  3.029 3.029 4.332 4.332     7.576 7.576  
3 1/2 4 0.083 0.083 0.12 0.12     0.226 0.226  
  3.472 3.472 4.97 4.97     9.109 9.109  
4 4.5 0.083 0.083 0.12 0.12     0.237 0.237 0.281
  3.915 3.915 5.613 5.613     10.79 10.79 12.66
4 1/2 5             0.247    
              12.53    
5 5.563 0.109 0.109 0.134 0.134     0.258 0.258  
  6.349 6.349 7.77 7.77     14.62 14.62  
6 6.625 0.109 0.109 0.134 0.134     0.28 0.28  
  7.585 7.585 9.289 9.289     18.97 18.97  
7 7.625             0.301    
              23.57    
8 8.625 0.109 0.109 0.148 0.148 0.25 0.277 0.322 0.322 0.406
  9.914 9.914 13.4 13.4 22.36 24.7 28.55 28.55 35.64
9 9.625             0.342    
              33.9    
10 10.75 0.134 0.134 0.165 0.165 0.25 0.307 0.365 0.365 0.5
  15.19 15.19 18.65 18.65 28.04 34.24 40.48 40.48 54.74
11 11.75             0.375    
              45.55    
12 12.75 0.156 0.165 0.18 0.18 0.25 0.33 0.375 0.406 0.562
  21.07 22.18 24.2 24.2 33.38 43.77 49.56 53.53 73.16
14 14 0.156   0.188 0.25 0.312 0.375 0.375 0.437 0.593
  23.06   27.73 36.71 45.68 54.57 54.57 63.67 84.91
16 16 0.165   0.188 0.25 0.312 0.375 0.375 0.5 0.656
  27.9   31.75 42.05 52.36 62.58 62.58 82.77 107.5
18 18 0.165   0.188 0.25 0.312 0.437 0.375 0.562 0.75
  31.43   35.76 47.39 59.03 82.06 70.59 104.8 138.2
20 20 0.188   0.218 0.25 0.375 0.5 0.375 0.593 0.812
  39.78   46.05 52.73 78.6 104.1 78.6 122.9 166.4
24 24 0.218   0.25 0.25 0.375 0.562 0.375 0.687 0.968
  55.37   63.41 63.41 94.62 140.8 94.62 171.2 238.1
26 26       0.312 0.5   0.375    
        85.6 136.2   102.6    
28 28       0.312 0.5 0.625 0.375    
        92.26 146.8 182.7 110.6    
30 30 0.25   0.312 0.312 0.5 0.625 0.375    
  79.43   98.93 98.93 157.5 196.1 118.6    
32 32       0.312 0.5 0.625 0.375 0.688  
        105.6 168.2 209.4 126.7 230.1  
34 34       0.312 0.5 0.625 0.375 0.688  
        112.3 178.9 222.8 134.7 244.8  
36 36       0.312   0.625 0.375 0.75  
        118.9   236.1 142.7 282.3  
40 40             0.375    
              158.7    
42 42             0.375    
              166.7    
48 48             0.375    
              190.7    

Stainless Steel Seamless Pipe Marking

  1. Nominal Pipe Size (Nominal Bore)
  2. Schedule (Wall Thickness)
  3. Specification
  4. Grade
  5. Method of Manufacture (Seamless or Welded)
  6. Heat Number
  7. Manufacturer’s Name or Symbol – Optional

Sample: ASTM A 312 Pipe 304 12″ NB SCH 40S SMLS HEAT NO. XXXX

Manufacturing Specification of stainless steel seamless pipe

ASTM A312 Seamless and straight-seam welded austenitic pipe intended for high temperature and general corrosive service. Filler metal not permitted during welding
ASTM A358 Electric fusion welded austenitic pipe for corrosive and/or high temperature service. Typically only pipe up to 8 inch is produced to this specification. Addition of filler metal is permitted during welding
ASTM A790 Seamless and straight-seam welded ferritic/austenitic (duplex) pipe intended for general corrosive service, with a particular emphasis on resistance to stress corrosion cracking
ASTM A409 Straight-seam or spiral-seam electric fusion welded large diameter austenitic light-wall pipe in sizes 14” to 30” with walls Sch5S and Sch 10S for corrosive and/or high
ASTM A376 Seamless austenitic pipe for high temperature applications
ASTM A813 Single-seam, single- or double- welded austenitic pipe for high temperature and general corrosive applications
ASTM A814 Cold-worked welded austenitic pipe for high temperature and general corrosive service

Stainless Steel Pipe Wall Thickness Tolerances

NPS ASTM A312 WT Tolerance, %
+
1/8-2 1 /2 20 12.5
3~18, t/D≤ 5% 22.5 12.5
3~18, t/D> 5% 15 12.5
≥ 20, welded 17.5 12.5
≥ 20, seamless, t/D≤ 5% 22.5 12.5
≥ 20, seamless, t/D> 5% 15 12.5

Outside Diameter Tolerance of Stainless Steel Pipe

NPS ASTM A312 OD Tolerance
+
inch mm inch mm
1/8~1 1 /2 1/64(0.015) 0.4 1/32(0.031) 0.8
> 1 1 /2~4 1/32(0.031) 0.8 1/32(0.031) 0.8
> 4~8 1/16(0.062) 1.6 1/32(0.031) 0.8
> 8~18 3/32(0.093) 2.4 1/32(0.031) 0.8
> 18~26 1/8(0.125) 3.2 1/32(0.031) 0.8
> 26~34 5/32(0.156) 4 1/32(0.031) 0.8
> 34~48 3/16(0.187) 4.8 1/32(0.031) 0.8

Stocking Distributor Of Following Manufacturer

Sanyo Special Stainless Steel Pipe Dealer
Jindal Stainless Steel Pipe Dealer
Schoeller Bleckmann Stainless Steel Pipe Dealer
Kobe Steel Stainless Steel Pipe Dealer
Salzgitter Mannesmann Stainless Steel Pipe Dealer
Nippon Steel & Sumitomo Metal SS Pipe Dealer

Application of Stainless Steel Pipes

  • Chemical Industries
  • Thermal & Nuclear Power Plants
  • Fertilizer Plant
  • Aerospace
  • Food & Dairy Plants
  • Paper Industries
  • Oil & Gas Exploration
  • Desalination Plant
  • Pharmaceutical Plant