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Stainless Steel Welded Pipe

Penn Stainless Products supplies welded pipe, per ASTM A 312, ASTM A 358 or as rolled and welded. We supply common grades of stainless such as 304/304L and 316/316L in standard pipe sizes and schedules including Sch 5, Sch 10, Sch 40s and Sch 80s. We also supply more challenging stainless welded pipe requirements including 304H, 316H, 309/S, 310/S, 317/L, 321/H, 347/H, 410, 410S, Duplex 2205, Duplex 2507 and many other grades of stainless, duplex or nickel alloys.

We can even supply material with wall thicknesses up to 3″ thick! Diameters sizes range from 1/8″ up to 96″. We specialize in quick delivery of non-standard welded pipe. We recently supplied a steel mill with 3 pieces of 11-1/2″ OD x .625″ Wall x 13’ Type 316/316L and delivered the product in 5 days to meet a shut-down requirement. All welded pipe products can be cut to size. Specialty testing, including X-ray, Hydro Testing and more can be supplied upon request.

Stainless Steel Welded Pipe Overview

Overview of Stainless Steel Welded Pipe

Stainless Steel Welded Pipe

Diameter of Stainless Pipe

 11/8″ thru 36″ Get a Quote

300 Series Stainless Steel Grades

304 – 304/L – 304H – 309/S – 309H – 310/S – 310H – 316L – 317L – 321 – 321H – 347 – 347H Get a Quote

400 Series Stainless Steel Grades

 410 – 410S  Get a Quote

Nickel Alloy Grades

 Duplex 2205, Duplex 2507  Get a Quote

Inventory for Stainless Steel Welded Pipe Product Offerings

  • Pipe can be cut to size, threaded or polished per customer specification.
  • Pipe is stocked in 17′ to 24′ R/L sections. Longer lengths can be made to order.
  • Penn Stainless stocks flanges, butt weld fittings, forged fittings and valves.

Click on the size below to see inventory:

1/4″-3/4″, 1″-2″, 2-1/2″-4″, 5″-10″, 12″-16″, 18″

NPS / OD ID Wall Wt /Ft Grade
1/8″ Sch 5 .335 .035 .1425 304/L
.405 OD
1/8″ Sch 10 .307 .049 .1919 304/L
.405 OD 316/L
1/8″ Sch 40 .269 .068 .2521 304/L
.405 OD 316/L
1/8″ Sch 80 .215 .095 .3240 304/L
.405 OD 316/L
1/4″ Sch 5 .442 .049 .2646 304/L
.540 OD
1/4″ Sch 10 .410 .065 .3396 304/L
.540 OD 316/L
1/4″ Sch 40 .364 .083 .4375 304/L
.540 OD 316/L
1/4″ Sch 80 .302 .119 .5511 304/L
.540 OD 316/L
3/8″ Sch 5 .577 .049 .3374 304/L
.675 OD
3/8″ Sch 10 .545 .065 .4362 304/L
.675 OD 316/L
3/8″ Sch 40 .493 .091 .6786 304/L
.675 OD 316/L
3/8″ Sch 80 .423 .126 .7609 304/L
.675 OD 316/L
1/2″Sch 5 .710 .065 .5541 304/L
.840 OD 316/L
1/2″ Sch 10 .674 .083 .6911 304/L
.840 OD 316/L
1/2″ Sch 40 .622 .109 .8765 304/L
.840 OD 309
310
316/L
317/L
321
1/2″ Sch 80 .546 .147 1.121 304/L
.840 OD 316/L
3/4″ Sch 5 .920 .065 .7043 304/L
1.050 OD 316/L
3/4″ Sch 10 .884 .083 .8829 304/L
1.050 OD 316/L
317/L
3/4″Sch 40 .824 .113 1.165 304/L
1.050 OD 309
310
316/L
317/L
321
3/4″ Sch 80 .742 .154 1.518 304/L
1.050 OD 316/L
1″ Sch 5 1.185 .065 .8938 304/L
1.315 OD 316/L
1″ Sch 10 1.097 .109 1.446 304/L
1.315 OD 310
316/L
317/L
321
1″ Sch 40 1.049 .133 1.729 304/L Back to Top
1.315 OD 309
310
316/L
317/L
321
254SMO
1″ Sch 80 .957 .179 2.237 304/L
1.315 OD 316/L
1-1/4″ Sch 5 1.530 .065 1.140 304/L
1.660 OD 316/L
1-1/4″ Sch 10 1.442 .109 .1.860 304/L
1.660 OD 310
316/L
1-1/4″ Sch 40 1.380 .140 2.341 304/L
1.660 OD 310
316/L
317/L
321
1-1/4″Sch 80 1.278 .191 3.086 304/L
1.660 OD 316/L
1-1/2″ Sch 5 1.770 .065 1.312 304/L
1.900 OD 316/L
1-1/2″ Sch 10 1.682 .109 2.147 304/L
1.900 OD 310
316/L
317/L
321
1-1/2″ Sch 40 1.610 .145 2.799 304/L
1.900 OD 309
310
316/L
317/L
321
254SMO
1-1/2″ Sch 80 1.500 .200
1.900 OD
2″ Sch 5 2.245 .065 1.652 304/L Back to Top
2.375 OD 316/L
2″ Sch 10
2.375 OD 2.157 .109 2.717 304/L
310
316/L
317/L
321
254SMO
2″ Sch 40 2.067 .154 3.762 304/L
2.375 OD 309
310
316/L
317/L
321
254SMO
2″ Sch 80 1.939 .218 5.172 304/L
2.375 OD 310
316/L
317/L
2-1/2″ Sch 5 2.709 .083 2.549 304/L
2.875 OD 316/L
2-1/2″ Sch 10 2.635 .120 3.637 304/L
2.875 OD 310
316/L
317/L
321
2-1/2″ Sch 40 2.469 .203 5.967 304/L
2.875 OD 310
316/L
321
2-1/2″ Sch 80 2.323 .276 7.891 304/L Back to Top
2.875 OD 309
310
316/L
317/L
3″ Sch 5 3.334 .083 3.120 304/L
3.500 OD 316/L
321
3″ Sch 10 3.260 .120 4.462 304/L
3.500 OD 309
310
316/L
317/L
321
254SMO
3″ Sch 40 3.068 .216 7.803 304/L
3.500 OD 309
310
316/L
317/L
321
3″ Sch 80 2.900 .300 10.560 304/L
3.500 OD 310
316/L
317/L
321
3-1/2″ Sch 5 3.834 .083 3.576 304/L
4.000 OD 316/L
3-1/2″ Sch 10 3.760 .120 5.123 304/L
4.000 OD 310
316/L
317/L
321
3-1/2″ Sch 40 3.454 .273 11.192 304/L Back to Top
4.000 OD 309
310
316/L
317/L
347
3-1/2″ Sch 80 3.326 .337 13.579 304/L
4.000 OD 310
316/L
4″ Sch 5 4.334 .083 4.033 304/L
4.500 OD 316/L
4″ Sch 10 4.260 .120 5.782 304/L
4.500 OD 309
310
316/L
317/L
321
254SMO
4″ Sch 20 304/L
4.500 OD 316/L
4″ Sch 40 3.954 .273 12.694 304/L
4.500 OD 309
310
316/L
317/L
321
347
410
254SMO
4″ Sch 80 3.826 .337 15.432 304/L
4.500 OD 309
316/L
317/L
321
347
410
5″ Sch 5 5.345 .109 6.539 304/L Back to Top
5.563 OD 316/L
321
5″ Sch 10 5.295 .134 8.002 304/L
5.563 OD 310
316/L
317/L
321
5″ Sch 40 5.047 .258 15.056 304/L
5.563 OD 309
310
316/L
317/L
321
347
5″ Sch 80 4.813 .375 21.401 304/L
5.563 OD 309
310
316/L
317/L
347
6″ Sch 5 6.407 .109 7.813 304/L
6.625 OD 316/L
317/L
321
6″ Sch 10 6.357 .134 9.568 304/L
6.625 OD 309
310
316/L
317/L
321
347
6″ Sch 20 316/L
6.625 OD 317/L
6″ Sch 40 6.065 .280 19.543 304/L
6.625 OD 309
310
316/L
317/L
321
347
410
6″ Sch 80 5.761 .432 29.429 304/L Back to Top
6.625 OD 309
310
316/L
317/L
321
347
6″ Sch 120 5.501 .562 37.482 304/L
6.625 OD 316/L
8″ Sch 5 8.407 .109 10.211 304/L
8.625 OD 316/L
321
347
6″ Sch 10 8.329 .148 13.801 304/L
8.625 OD 309
310
316/L
317/L
321
347
410
6″ Sch 20 8.125 .250 23.031 304/L
8.625 OD 310
316/L
317/L
321
6″ Sch 40 7.981 .322 29.409 304/L
8.625 OD 309
310
316/L
317/L
321
347
410
6″ Sch 60 7.813 .406 36.706 304/L Back to Top
8.625 OD 316/L
6″ Sch 80 7.625 .500 44.688 304/L
8.625 OD 309
310
316/L
317/L
321
347
6″ Sch 100 7.439 .593 52.393 304/L
8.625 OD
6″ Sch 120 7.189 .718 62.450 304/L
8.625 OD 316/L
6″ Sch 160 6.813 .906 76.928 304/L
8.625 OD 316/L
321
10″ Sch 5 10.482 .134 15.648 304/L
10.750 OD 316/L
321
10″ Sch 10 10.420 0.165 19.212 304/L
10.750 OD 309
310
316/L
317/L
321
347
Duplex 2205
10″ Sch 20 10.250 .250 28.875 304/L
10.750 OD 310
316/L
317/L
321
10″ Sch 30 10.136 .307 35.266 304/L
10.750 OD 316/L
10″ Sch 40 10.020 .365 41.696 304/L
10.750 OD 309
310
316/L
317/L
321
347
410
Duplex 2205
10″ Sch 80s 9.750 .500 56.375 304/L Back to Top
10.750 OD 309
310
316/L
317/L
321
347
Duplex 2205
10″ Sch 80 9.564 .593 66.254 304/L
10.750 OD 310
316/L
317/L
321
10″ Sch 100 9.314 .718 79.233 304/L
10.750 OD 316/L
10″ Sch 120 9.064 .843 91.868 304/L
10.750 OD 316/L
321
10″ Sch 140 8.750 1.000 107.250 304/L
10.750 OD 316/L
10″ Sch 160 8.500 1.125 119.109 304/L
10.750 OD 316/L
321
12″ Sch 5 12.420 .165 22.842 304/L
12.750 OD 316/L
317/L
321
12″ Sch 10 12.390 .180 24.889 304/L
12.750 OD 309
310
316/L
317/L
321
347
12″ Sch 20 12.250 .250 34.375 304/L Back to Top
12.750 OD 310
316/L
317/L
321
12″ Sch 30 12.090 .330 45.085 304/L
12.750 OD 316/L
12″ Sch 40s 12.000 .375 51.047 304/L
12.750 OD 309
310
316/L
317/L
321
347
410
12″ Sch 40 11.938 .406 55.128 304/L
12.750 OD 316/L
321
12″ Sch 60 11.626 .562 75.346 304/L
12.750 OD 316/L
12″ Sch 80s 11.750 .500 67.375 304/L
12.750 OD 309
310
316/L
317/L
321
347
12″ Sch 80 11.376 .687 91.160 304/L
12.750 OD 316/L
317/L
321
12″ Sch 100 11.064 .843 110.414 304/L
12.750 OD 316/L
12″ Sch 120 10.750 1.000 129.250 304/L Back to Top
12.750 OD 316/L
321
12″ Sch 160 10.312 1.312 165.073 304/L
12.750 OD 316/L
321
14″ Sch 5 13.688 .156 23.756 304/L
14.000 OD 316/L
14″ Sch 10s 13.624 .188 28.563 304/L
14.000 OD 310
316/L
317/L
321
14″ Sch 10 13.500 .250 37.812 304/L
14.000 OD 310
316/L
317/L
321
14″ Sch 20 13.376 .312 46.977 304/L
14.000 OD 316/L
14″ Sch 40s 13.250 .375 56.203 304/L
14.000 OD 309
310
316/L
317/L
321
347
Duplex 2205
14″ Sch 40 13.126 .437 65.197 304/L
14.000 OD 316/L
14″ Sch 60 12.814 .593 87.454 304/L
14.000 OD 316/L
14″ Sch 80s 13.000 .500 74.250 304/L Back to Top
14.000 OD 309
310
316/L
317/L
321
347
14″ Sch 80 12.500 .750 109.312 304/L
14.000 OD 316/L
321
14″ Sch 120 11.814 1.093 155.181 304/L
14.000 OD 316/L
14″ Sch 140 11.500 1.250 175.312 304/L
14.000 OD
14″ Sch 160 11.188 1.406 194.779 304/L
14.000 OD 316/L
16″ Sch 5 15.670 .165 28.740 304/L
16.000 OD 316/L
16″ Sch 10s 15.624 .188 32.699 304/L
16.000 OD 309
310
316/L
317/L
321
16″ Sch 10 15.500 .250 43.312 304/L
16.000 OD 310
316/L
317/L
321
16″ Sch 20 15.376 .312 53.841 304/L
16.000 OD 316/L
16″ Sch 40s 15.250 .375 64.453 304/L
16.000 OD 309
310
316/L
317/L
321
347
16″ Sch 60 14.688 .656 110.722 304/L Back to Top
16.000 OD 316/L
16″ Sch 80s 15.000 .500 85.250 304/L
16.000 OD 309
310
316/L
317/L
321
16″ Sch 80 14.314 .843 140.551 304/L
16.000 OD 316/L
321
16″ Sch 100 13.938 1.031 169.763 304/L
16.000 OD 316/L
16″ Sch 120 13.564 1.218 198.049 304/L
16.000 OD 316/L
18″ Sch 5 17.670 .165 32.370 304/L
18.000 OD 316/L
18″ Sch 10s 17.624 .188 36.835 304/L
18.000 OD 316/L
317/L
321
18″ Sch 10 17.500 .250 48.812 304/L
18.000 OD 310
316/L
317/L
321
18″Sch 20 17.376 .312 60.705 304/L
18.000 OD 316/L
18″ Sch 40s 17.250 .375 72.703 304/L
18.000 OD 309
310
316/L
317/L
321
347
18″ Sch 40 16.876 .562 107.802 304/L Back to Top
18.000 OD 316/L
18″ Sch 60 16.500 .750 142.325 304/L
18.000 OD 316/L
18″ Sch 80s 17.000 .500 96.250 304/L
18.000 OD 310
316/L
317/L
321
18″ Sch 80 16.126 .937 175.868 304/L
18.000 OD 316/L

Processing for Stainless Steel Welded Pipe

 Long Product Processing Services Overview

Bar & Structural Cutting

Products cut include Round Bar, Flat bar, Hex bar, Square bar, Tubing and Hollow Bar, Pipe, Angles, channels, Beams and Tees.  Thickness range is 1/16″ to 28″ diameter More Information

Production Cutting

Penn Stainless can provide production cutting for product diameters up to 4″.  We utilize Amanda Production Equipment to achieve these precision cuts with tight tolerances. More Information

Pipe Threading

Available thru 2″ in Diameter/All schedules More Information

Tubular Polishing

Products polished included all tubular products, with OD & ID polishing available, Round Bar, Square Bar, Hex & Flat bar, Angles, Uneven Leg Angles, beams, and other shapes. More Information

Value Added Resources for Welded Pipe

Stainless Steel Welded Pipe

Stainless Steel Pipe Polishing

Penn Stainless can polish nearly any stainless steel pipe item to a #4 polish, #6 Polish, #7 polish or a #8 mirror finish.  Stainless steel polished pipe can also be cut to size.

More Information

Technical Question?

Stainless Steel Pipe Beveling

Penn Stainless can bevel stainless steel pipe to prepare for welding or other processes.

More Information

 Technical Question?

Stainless Steel Pipe Honing & Turning

Penn Stainless can hone pipe and tube, using a precision abrasion process in order to obtain a desired finish or close dimensional tolerance.

More Information

 Technical Question?

Heatreating & Annealing

Some grades of stainless steel pipe can be heatreated to change the mechanical properties.

More Information

 Technical Question?

Positive Material Identification (PMI)

Penn Stainless can perform PMI testing in house for most stainless steel grades, or we can work with independent labs to complete PMI in order to meet customer specifications.

More Information

 Technical Question?

UT Testing

In some cases, UT testing of the stainless steel pipe may be required. We can assist you with this requirement.

More Information

 Technical Question?
  • Let Penn Stainless cut your next welded pipe requirement to your exact dimensions.
  • Most schedules stocked or can be supplied with reduced lead times including Sch 5 thru DXH.
  • Take advantage of our stainless welded pipe mills to supply non standard wall thicknesses, lengths or chemistry.
  • Common specifications include:
    • ASTM A 312 – Available with X-ray
    • ASTM A 778
    • ASTM A 358, Class 1, Class 2 & Class 3
    • Rolled & Welded per ASTM A 240
  • Special testing is available upon request.
  • Welded stainless pipe can be polished per customer specifications.

Welded Stainless Steel Pipe Tolerances

NPS Designator Permissible Variations in Outside Diameter
Over In. Under In.
1/8 to 1-1/2, incl 1/64 (0.015) 1/32 (0.031)
Over 1-1/2 to 4, incl 1/32 (0.031) 1/32 (0.031)
Over 4 to 8, incl 1/16 (0.062) 1/32 (0.031)
Over 8 to 18, incl 3/23 (0.093) 1/32 (0.031)

Nominal Wall Thickness:

NPS Designator

Outside Diameter in.

Schedule 5S in.

Schedule 10S in.

Schedule 40S in.

Schedule 80S in.

1/4 0.540 0.065 0.088 0.119
3/8 0.675 0.065 0.091 0.126
1/2 0.840 0.065 0.083 0.109 0.147
3/4 1.050 0.065 0.083 0.113 0.154
1.0 1.315 0.065 0.109 0.133 0.179
1 1/4 1.660 0.065 0.109 0.140 0.191
1 1/2 1.900 0.065 0.109 0.145 0.200
2 2.375 0.065 0.109 0.154 0.218
2 1/2 2.875 0.083 0.120 0.203 0.276
3 3.500 0.083 0.120 0.216 0.300
3 1/2 4.000 0.083 0.120 0.226 0.318
4 4.500 0.083 0.120 0.237 0.337
5 5.563 0.109 0.134 0.258 0.375
6 6.625 0.109 0.134 0.280 0.432
8 8.625 0.109 0.148 0.322 0.500
10 10.750 0.134 0.165 0.365 0.500
12 12.750 0.156 0.180 0.375 0.500

Welded Stainless Steel Pipe Specifications

Stainless Steel Welded Pipe Specifications

ASTM A 240

 This specification covers chromium, chromium-nickel, and chromium-manganese-nickel stainless steel plate, sheet, and strip for pressure vessels and for general applications. More Information

ASTM A312 

This specification covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service. More Information

ASTM A 358

 This specification covers electric-fusion-welded austenitic chromium-nickel stainless steel pipe suitable for corrosive or high-temperature service, or both, or for general applications. More Information 

ASTM A 778

 This specification covers straight seam and spiral butt seam welded unannealed austenitic stainless steel tubular products intended for low and moderate temperatures and corrosive service where heat treatment is not necessary for corrosion resistance.  More Information

Lengths:

  • 20′-0″ uniform or 21′-0″ uniform (mill option)

Call us at 1-800-222-6144 for more information