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Stainless Steel Seamless Tubes

Stainless Steel 310 Seamless Tubes Supplier USA | SS 310 Seamless Pipe

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Standard
ASTM A312 / ASTM A213
Grade
TP310
UNS Number
UNS S31000
OD Range
1/2" to 24" NB
Type
Seamless

USA Piping Solutions is a leading stainless steel 310 seamless tubes supplier and manufacturer in USA. ASTM A312 TP310 seamless tubes and ASTM A213 TP310 seamless tubes are readily available in all standard sizes and wall thicknesses from 1/2" to 24" NB; Sch 5S to XXS wall thickness; made to ASTM A213, A269 and A268 specifications. The excellent OD tolerance and uniform mechanical properties of our SS 310 seamless pipe stock allows us to deliver the most challenging project requirements that engineering contractors and procurement teams around the world require. We are a certified UNS S31000 seamless tube exporter who exports to refineries, petrochemical plants, power stations and OEMs of furnaces worldwide. All of our tubes are manufactured in strict compliance with the quality control process and are tested at various stages throughout the manufacturing process, and all tubes are solution annealed and hydrotested to comply with all of the requirements of ASTM and ASME with full mill test certification provided on each shipment.

Stainless Steel 310 Seamless Tubes Specification

Specification Details
Standard ASTM A312 / ASTM A213
ASME Equivalent ASME SA312 TP310 / ASME SA213 TP310
Grade TP310
UNS Number UNS S31000
DIN / EN 1.4845
Type Seamless
OD Range 1/2" to 24" NB (Seamless)
Wall Thickness Sch 5S through XXS
Tube OD (A213) 6 mm to 101.6 mm
Form Round Tubes and Pipes

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Stainless Steel 310 Seamless Tubes Types

310 stainless steel capillary tube
310 stainless steel capillary tube
310 Stainless Steel Round Tube
310 Stainless Steel Round Tube
310 Stainless Steel Tube
310 Stainless Steel Tube
ASTM A213 TP 310 Rectangular Tube
ASTM A213 TP 310 Rectangular Tube
SA 213 TP 310 Stainless Steel Condenser Tube
SA 213 TP 310 Stainless Steel Condenser Tube
SS 310 High Precision Tube
SS 310 High Precision Tube
Stainless Steel 310 Seamless Tubes
Stainless Steel 310 Seamless Tubes
Stainless Steel 310 Welded Tube
Stainless Steel 310 Welded Tube

SS 310 vs 310S Comparison
Property SS 310 Seamless SS 310S Seamless Key Difference
Carbon Max 0.25% 0.08% 310 higher C for strength; 310S better weldability
ASTM Spec A312 TP310 / A213 A312 TP310S / A213 Different TP designation
Max Service Temp ~1150°C continuous ~1150°C intermittent 310S preferred for cycling
Sensitization Risk Higher (welded form) Lower (lower C) Both fine as seamless
Primary Use Furnace tubes, retorts HX, cycling thermal Different duty cycles

Weight Chart of Stainless Steel 310 Seamless Tubes

Weights are calculated for seamless SS 310 pipe per ASTM A312 / A213. Actual weights may vary slightly with mill tolerance.

NPS (in) Outside Diameter (in / mm) Wall Thickness (in) Wall Thickness (mm) Schedule Weight (kg/Mtr) Weight (lb/ft) Notes
1/2" 0.840 / 21 0.109 2.769 40 STD 1.268 0.851  
    0.147 3.734 80 XHY 1.621 1.088  
3/4" 1.050 / 27 0.113 2.870 40 STD 1.684 1.131  
    0.154 3.912 80 XHY 2.195 1.474  
1" 1.315 / 33 0.133 3.378 40 STD 2.501 1.679  
    0.179 4.547 80 XHY 3.325 2.172  
1-1/4" 1.660 / 42 0.140 3.556 40 STD 3.385 2.273  
    0.191 4.851 80 XHY 4.464 2.997  
1-1/2" 1.900 / 48 0.145 3.683 40 STD 4.048 2.718  
    0.200 5.080 80 XHY 5.409 3.361  
2" 2.375 / 60 0.154 3.912 40 STD 5.441 3.653  
    0.218 5.537 80 XHY 7.480 5.022  
2-1/2" 2.875 / 73 0.203 5.516 40 STD 8.629 5.793  
    0.276 7.010 80 XHY 11.411 7.661  
3" 3.500 / 89 0.216 5.486 40 STD 11.284 7.576  
    0.300 7.620 80 XHY 15.272 10.253  
4" 4.500 / 114 0.237 6.020 40 STD 16.073 10.790  
    0.337 8.560 80 XHY 22.318 14.983  
6" 6.625 / 168 0.188 4.775 — 19.252 12.924  
    0.203 5.516 — 20.739 13.923  
    0.219 5.563 — 22.318 14.983  
    0.250 6.350 — 25.354 17.021  
    0.280 7.112 40 STD 28.263 18.974  
    0.312 7.925 — 31.334 21.036  
    0.375 9.525 — 37.285 25.031  
    0.432 10.973 80 XHY 42.561 28.573  
    0.500 12.700 — 48.719 32.708  
8" 8.625 / 219 0.188 4.775 — 25.233 16.940  
    0.203 5.156 — 27.198 18.259  
    0.219 5.563 — 29.286 19.661  
    0.250 6.350 20 33.308 22.361  
    0.277 7.036 30 36.786 24.696  
    0.322 8.179 40 42.352 28.554  
    0.375 9.525 — 49.216 33.041  
    0.406 10.312 60 53.085 35.638  
    0.500 12.700 80 XHY 64.627 43.388  
10" 10.750 / 273 0.188 4.775 — 31.588 21.207  
    0.219 5.563 — 36.689 24.631  
    0.250 6.350 20 41.759 28.035  
    0.307 7.798 30 51.002 34.240  
    0.344 8.738 — 56.946 38.231  
    0.365 9.271 40 STD 63.301 40.483  
    0.438 11.125 — 71.852 48.238  
    0.500 12.700 60 XHY 81.530 54.735  
    0.594 15.088 80 95.969 64.429  
12" 12.750 / 324 0.188 4.775 — 37.570 25.222  
    0.219 5.563 — 43.657 29.309  
    0.250 6.350 — 49.713 33.375  
    0.281 7.137 — 55.739 37.420  
    0.312 7.925 — 61.735 41.445  
    0.375 9.525 — 73.824 49.562  
    0.406 10.312 — 79.727 53.525  
    0.500 12.700 — 97.438 65.415  
    0.562 14.275 — 108.966 73.154  
14" 14.000 / 356 0.188 4.775 — 41.308 27.732  
    0.219 5.563 — 48.012 32.233  
    0.250 6.350 20 54.685 36.713  
    0.281 7.137 — 61.327 41.172  
    0.312 7.925 — 67.939 45.611  
    0.375 9.525 STD 81.281 54.568  
    0.438 11.125 40 94.498 63.441  
    0.500 12.700 XHY 107.381 72.090  
    0.625 15.875 — 132.983 89.278  
16" 16.000 / 406 0.188 4.775 — 47.290 31.748  
    0.219 5.563 — 54.980 36.910  
    0.250 6.350 10 62.639 42.053  
    0.281 7.137 — 70.268 47.174  
    0.312 7.925 20 77.866 52.275  
    0.344 8.738 — 85.677 57.519  
    0.375 9.525 30 STD 93.213 62.578  
    0.438 11.125 — 108.433 72.797  
    0.500 12.700 40 XHY 123.289 82.770  
18" 18.000 / 457 0.219 5.563 — 61.948 41.588  
    0.250 6.350 — 70.593 47.393  
    0.281 7.137 — 79.208 53.176  
    0.312 7.925 20 87.792 58.939  
    0.375 9.525 STD 105.144 70.588  
    0.438 11.125 30 122.369 82.152  
    0.500 12.700 XHY 139.198 93.450  
    0.562 14.275 40 155.904 104.666  
    0.625 15.875 — 172.754 115.978  
20" 20.000 / 508 0.250 6.350 — 78.547 52.733  
    0.282 7.163 — 88.458 59.386  
    0.312 7.925 — 97.719 65.604  
    0.375 9.525 20 STD 117.075 78.598  
    0.438 11.125 — 136.305 91.508  
    0.500 12.700 30 XHY 155.106 104.130  
    0.594 15.088 40 183.378 123.110  
    0.625 15.875 — 192.640 129.328  
    0.688 17.475 — 211.368 141.901  
24" 24.000 / 610 0.250 6.350 — 94.456 63.413  
    0.281 7.137 — 106.029 71.183  
    0.312 7.925 — 117.573 78.932  
    0.375 9.525 20 STD 140.938 94.618  
    0.438 11.125 — 164.176 110.219  
    0.500 12.700 XHY 186.923 125.490  
    0.625 15.875 — 232.410 156.028  
    0.688 17.475 40 255.148 171.293  
    0.750 19.050 — 277.401 186.233  
30" 30.000 / 762 0.250 6.350 — 118.318 79.433  
    0.281 7.137 — 132.851 89.189  
    0.312 7.925 10 147.353 98.925  
    0.375 9.525 STD 176.731 118.648  
    0.438 11.125 — 205.983 138.286  
    0.500 12.700 20 XHY 234.647 157.530  
    0.625 15.875 30 292.066 196.078  
    0.688 17.475 — 320.817 215.380  
    0.750 19.050 — 348.988 234.293  
36" 36.000 / 914 0.250 6.350 — 142.180 95.453  
    0.281 7.137 — 159.672 107.196  
    0.312 7.925 10 177.133 118.918  
    0.375 9.525 STD 215.525 142.678  
    0.438 11.125 — 247.790 166.353  
    0.500 12.700 20 XHY 282.372 189.570  
    0.625 15.875 — 351.723 236.128  
    0.688 17.475 — 386.487 259.467  
    0.750 19.050 — 420.576 282.353  
42" 42.000 / 1067 0.312 7.925 — 206.914 138.911  
    0.375 9.525 STD 248.319 166.708  
    0.500 12.700 XHY 330.097 221.610  
    0.750 19.050 — 492.163 330.413  
48" 48.000 / 1219 0.375 9.525 STD 284.112 190.738  
    0.438 11.125 — 331.404 222.487  
    0.500 12.700 XHY 377.822 253.650  
    0.750 19.050 — 563.750 378.473  
    0.875 22.225 — 655.969 440.383  

SS 310 Seamless Tube / Pipe Pressure Rating (ASTM A312 / A213)

Pressures in PSI (pounds per square inch). Values apply to both SS 310 Seamless Pipe (ASTM A312 TP310) and SS 310 Seamless Tube (ASTM A213 TP310) of the same OD and wall thickness.

Note: Cells highlighted in yellow with red text indicate pressure ratings below 1,000 PSI. Schedule 160 shown as heavy wall reference. Ratings per ASME B31.3 allowable stress basis.

Pipe Size(NPS) Schedule 100°F 200°F 300°F 400°F 500°F 600°F 650°F 700°F 750°F
1" 40 3,048 2,629 2,362 2,171 2,019 1,924 1,867 1,824 1,810
1" 80 4,213 3,634 3,265 3,002 2,791 2,659 2,580 2,528 2,501
1" 160 6,140 5,296 4,759 4,375 4,068 3,876 3,761 3,684 3,646
1.5" 40 2,257 1,947 1,750 1,608 1,496 1,425 1,383 1,354 1,340
1.5" 80 3,182 2,744 2,466 2,267 2,108 2,009 1,949 1,909 1,889
1.5" 160 4,619 3,984 3,580 3,291 3,060 2,916 2,829 2,772 2,743
2" 40 1,902 1,640 1,474 1,355 1,260 1,201 1,165 1,141 1,129
2" 80 2,747 2,369 2,129 1,957 1,820 1,734 1,682 1,648 1,631
2" 160 4,499 3,880 3,486 3,205 2,980 2,840 2,755 2,699 2,671
3" 40 1,806 1,558 1,400 1,287 1,196 1,140 1,106 1,084 1,072
3" 80 2,553 2,202 1,979 1,819 1,691 1,612 1,564 1,532 1,516
3" 160 3,840 3,312 2,976 2,736 2,544 2,424 2,352 2,304 2,280
4" 40 1,531 1,321 1,187 1,091 1,014 967 938 919 909
4" 80 2,213 1,909 1,715 1,577 1,466 1,397 1,355 1,328 1,314
4" 160 3,601 3,106 2,791 2,566 2,386 2,273 2,206 2,161 2,138
5" 40 1,342 1,158 1,040 956 889 847 822 805 797
5" 80 1,981 1,709 1,535 1,411 1,312 1,250 1,213 1,189 1,176
5" 160 3,414 2,945 2,646 2,433 2,262 2,155 2,091 2,049 2,027
6" 40 1,219 1,052 945 869 808 770 747 732 724
6" 80 1,913 1,650 1,483 1,363 1,267 1,208 1,172 1,148 1,136
6" 160 3,289 2,836 2,549 2,343 2,179 2,076 2,014 1,973 1,953
8" 40 1,073 926 832 765 711 678 657 644 637
8" 80 1,692 1,459 1,311 1,205 1,121 1,068 1,036 1,015 1,005
8" 160 3,175 2,738 2,460 2,262 2,103 2,004 1,944 1,905 1,885
10" 40 974 840 755 694 645 615 596 584 578
10" 80 1,609 1,388 1,247 1,147 1,066 1,016 986 966 956
10" 160 3,147 2,714 2,439 2,242 2,085 1,986 1,927 1,880 1,868

SS 310 Seamless Tube Pressure Rating
Pipe Size(NPS) Schedule 38°C 93°C 149°C 204°C 260°C 316°C 343°C 371°C 399°C
1" 40 3,048 2,629 2,362 2,171 2,019 1,924 1,867 1,824 1,810
1" 80 4,213 3,634 3,265 3,002 2,791 2,659 2,580 2,528 2,501
1" 160 6,140 5,296 4,759 4,375 4,068 3,876 3,761 3,684 3,646
1.5" 40 2,257 1,947 1,750 1,608 1,496 1,425 1,383 1,354 1,340
1.5" 80 3,182 2,744 2,466 2,267 2,108 2,009 1,949 1,909 1,889
1.5" 160 4,619 3,984 3,580 3,291 3,060 2,916 2,829 2,772 2,743
2" 40 1,902 1,640 1,474 1,355 1,260 1,201 1,165 1,141 1,129
2" 80 2,747 2,369 2,129 1,957 1,820 1,734 1,682 1,648 1,631
2" 160 4,499 3,880 3,486 3,205 2,980 2,840 2,755 2,699 2,671
3" 40 1,806 1,558 1,400 1,287 1,196 1,140 1,106 1,084 1,072
3" 80 2,553 2,202 1,979 1,819 1,691 1,612 1,564 1,532 1,516
3" 160 3,840 3,312 2,976 2,736 2,544 2,424 2,352 2,304 2,280
4" 40 1,531 1,321 1,187 1,091 1,014 967 938 919 909
4" 80 2,213 1,909 1,715 1,577 1,466 1,397 1,355 1,328 1,314
4" 160 3,601 3,106 2,791 2,566 2,386 2,273 2,206 2,161 2,138
5" 40 1,342 1,158 1,040 956 889 847 822 805 797
5" 80 1,981 1,709 1,535 1,411 1,312 1,250 1,213 1,189 1,176
5" 160 3,414 2,945 2,646 2,433 2,262 2,155 2,091 2,049 2,027
6" 40 1,219 1,052 945 869 808 770 747 732 724
6" 80 1,913 1,650 1,483 1,363 1,267 1,208 1,172 1,148 1,136
6" 160 3,289 2,836 2,549 2,343 2,179 2,076 2,014 1,973 1,953
8" 40 1,073 926 832 765 711 678 657 644 637
8" 80 1,692 1,459 1,311 1,205 1,121 1,068 1,036 1,015 1,005
8" 160 3,175 2,738 2,460 2,262 2,103 2,004 1,944 1,905 1,885
10" 40 974 840 755 694 645 615 596 584 578
10" 80 1,609 1,388 1,247 1,147 1,066 1,016 986 966 956
10" 160 3,147 2,714 2,439 2,242 2,085 1,986 1,927 1,880 1,868

Heat Treatment of SS 310 Seamless Tubes

Solution annealing is mandatory for stainless steel 310 seamless tubes after cold drawing or hot extrusion. The recommended annealing temperature range is 1040°C to 1150°C, followed by water quenching or rapid air cooling. This treatment dissolves any chromium carbides formed during working and restores the fully austenitic microstructure required for service. All tubes from our stock ship in the solution annealed condition per ASTM/ASME requirements. For compatible system components, explore our Stainless Steel 310 Flanges range.

Applications of Stainless Steel 310 Seamless Tubes

The outstanding high temperature strength and oxidation resistance of stainless steel 310 seamless tubes make them the preferred choice for:

  • Furnace radiant tubes and retorts operating up to 1150°C continuous.
  • Pyrolysis furnace tube banks in ethylene cracking plants.
  • Heat treatment baskets, fixtures, and trays for carburizing furnaces.
  • Flue gas heat exchangers and waste heat recovery systems.
  • High temperature chemical reactors and sulphur recovery unit (SRU) process tubes.
  • Kiln components and high temperature conveyor assemblies.

For related high temperature grade options, see Stainless Steel 321 Pipes & Tubes. For boiler and heat exchanger specific forms, visit Boiler & Heat Exchanger Tubes.

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Frequently Asked Questions

Q1: ASTM A312 vs A213 for SS 310: which for heat exchanger tubes?

A213 covers seamless tubes for boiler, superheater, and heat exchanger service. A312 covers seamless and welded pipe. For HX tubing needing close OD tolerance and ASME Sec VIII compliance, ASTM A213 is the correct specification to call out.

Q2: SS 310 vs 316H for high temperature service?

SS 310 (25Cr 20Ni) outperforms 316H above 900°C thanks to higher Cr and Ni. 316H is limited to roughly 800°C. For furnace and pyrolysis service above 900°C, SS 310 seamless is the industry standard choice.

Q3: Is SS 310 seamless tube available in IBR specification?

Yes. We supply SS 310 seamless tubes with certification. Tubes are manufactured to ASTM A213 and carry third party IBR stamping for boiler and pressure vessel use.

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