800-222-6144

Stainless Steel Seamless Pipe

Penn Stainless supplies common grades of stainless such as 304, 304L, 316, and 316L in standard seamless pipe sizes and schedules, including Sch 5, Sch 10, Sch 40s and Sch 80s. We also cater to less common stainless grades like 304H, 316H, 309S, 310S, 317L, 321H, 347H, 410, and 410S, in addition to Duplex and Nickel Alloy grades.

We supply off the shelf product, as well as non standard sizes of stainless seamless pipe. Specialty testing–including x-ray, hydro testing and more– can be supplied upon request.  See our Processing Services and Testing Services pages.

Stainless Steel Seamless Pipe

Diameter of Stainless Pipe

 1/4″ thru 24″.  Also, Penn Stainless can provide non standard sizes. Get a Quote

300 Series Stainless Steel Grades

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

400 Series Stainless Steel Grades

410 - 410S Get a Quote

Stainless Steel Seamless Pipe Supply Highlights

Quick Ship of off the shelf Seamless Tube

Penn Stainless can offer same day ship for many of our seamless pipe and tube products.   Get a Quote More Info Technical Question?

Custom Sizes

If you need quick delivery on a non-standard size, let us know! More Info Technical Question?

Stainless Pipe and Tube Cutting Services 

Penn Stainless has in-house tubular cutting services for diameters ranging from 1/16″ to 28″. Products with larger diameters can be cut with our partner pipe and tube mills. More Info Technical Question?

Stainless Pipe and Tube Value Added Services

Polishing, beveling, honing/turning, heat treating and annealing, and more. Pipe and tube can be polished in #4 polish, #6 polish, #7 polish and/or #8 mirror finish. Some ID Sizes can also be polished. More Info Technical Question?

Testing Services for Stainless Pipe and Tube

Positive material identification, liquid penetrant testing, radiographic testing, ultrasonic testing, charpy impact testing, corrosion testing, and more. More Info Technical Question?

Stainless Pipe and Tube Technical Resources

Penn Stainless has over 30 years of technical service and project management experience. Our resources include metallurgists, welding experts, specification developers, a rapid delivery team, and inventory management services. More Info Technical Question?

Stainless Steel Pipe & Tube Grades

Stainless 304/304L

With 18 percent chromium and 8 percent nickel, 304 is the most common stainless steel grade. 304L is the low carbon version of 304. All tubular products are readily available in 304 and 304L stainless steel Data Sheet Technical Question? Get a Quote

Stainless 304H

Like standard 304, this grade is also an 18 percent chromium and 8 percent nickel stainless steel. This grade requires a minimum carbon content of .04. The higher carbon content gives 304H greater heat resistant qualities, higher yield strength, and better short term and long term creep strength. Longer lead times could be required to deliver 304H in some tubular forms. Data Sheet Technical Question? Get a Quote

Stainless 316/316L

This grade has more nickel than 304 and 304L and includes molybdenum. 316 and 316L have superior corrosion resistance to 304 and 304L in most instances.  316 and 316L stainless steel is readily available in all product forms. Data Sheet  Technical Question?  Get a Quote

Stainless 317/317L

317 and 317L contain more molybdenum and has overall better corrosion resistance resistance than 304, 304L, 316, and 316L stainless steels. 317L offers higher resistance to chloride pitting compared 304L and 316L. 317 and 317L is available in seamless pipe. Other tubular products can be provided, but a larger lead time could be required. Data Sheet  Technical Question?  Get a Quote

Stainless 309

309 stainless steel has good strength and resistance to oxidation at high temperatures. This grade has better overall corrosion resistance than 304 stainless steel. Data Sheet  Technical Question?  Get a Quote

Stainless 309S

309S has lower carbon content than regular 309 and is recommended for applications where sensitization and subsequent corrosion by high temperature gases or condensates during shutdown may pose a problem. In some cases, tubular products may be dual certified to 309 and 309S. Data Sheet  Technical Question?  Get a Quote

Stainless 310

This grade combines excellent high temperature properties with good ductility. 310 stainless is designed for high temperature service applications. In most applications, 310 stainless resists oxidation at high temperatures.  Data Sheet  Technical Question?  Get a Quote

Stainless 310S

Stainless grade 310S calls for lower carbon content than standard 310 stainless. In many cases, 310 and 310S are dual certified. See full data sheet for comparison.  Data Sheet  Technical Question?  Get a Quote

Stainless 310H

Stainless steel grade 310H has higher carbon content and is often selected for high temperature applications. 310H is used in environments that produce sulfur dioxide gas at high temperatures.  Data Sheet  Technical Question?  Get a Quote

Stainless 321

321 Stainless Steel is an austenitic chromium-nickel stainless steel that contains titanium. This is best for use in welded parts that cannot be annealed. Data Sheet   Technical Question?  Get a Quote

Stainless 321H

321H grade stainless steel is the higher carbon version of grade 321. It possesses enhanced creep resistance and higher strength at temperatures above 10,000F (537°C). Usually, the plate’s carbon content allows dual certification. Data Sheet   Technical Question?  Get a Quote

Stainless 347

347 Stainless Steel is a stabilized austenitic stainless steel similar to type 304, but it also contains columbium and tantalum.  Data Sheet  Technical Question?  Get a Quote

Stainless 347H

347H Stainless Steel is a columbium-stabilized austenitic stainless steel plate. It has good general corrosion resistance, as well as slightly better resistance in strong oxidizing conditions than grade 321. Data Sheet   Technical Question?  Get a Quote

Penn Stainless also supplies non-standard seamless pipe, and so let us know if you have a requirement that is not listed below.

NPS / OD

ID

Wall

Wt /Ft

Grade

1/8″ Sch 10 .307 .049 .1863 304/L
.405 OD 316/L
1/8″ Sch 40 .269 .068 .2447 304/L
.405 OD 310
316/L
321
1/8″ Sch 80 .215 .095 .3145 304/L
.405 OD 310
316/L
321
347
1/4″ Sch 10 .410 .065 .3297 304/L Back to Top
.540 OD 310
316/L
1/4″ Sch 40 .364 .088 .4248 304/L
.540 OD 309
310
316/L
317/L
321
347
Duplex 2205
Alloy 20
1/4″ Sch 80 .302 .119 .4248 304/L
.540 OD 309
310
316/L
317/L
321
347
3/8″ Sch 10 .545 .065 .4235 304/L
.675 OD 316/L
3/8″ Sch 40 .493 .091 .5676 304/L
.675 OD 309
310
316/L
317/L
321
347
3/8″ Sch 80 .423 .126 .7388 304/L
.675 OD 309
310
316/L
317/L
321
347
1/2″ Sch 5 .710 .065 .5383 304/L Back to Top
.840 OD 316/L
1/2″ Sch 10 .674 .083 .671 304/L
.840 OD 310
316/L
317/L
321
347
1/2″ Sch 40 .622 .109 .851 254SMO
.840 OD 304/L
304H
309
310
316/L
317/L
321
347
410
Duplex 2205
1/2″ Sch 80 .693 .147 1.088 304/L
.840 OD 304H
309
310
316/L
317/L
321
347
1/2″ Sch 160 .652 .188 1.309 304/L
.840 OD 310
316/L
321
347
1/2″ Sch DXH .546 .294 1.714 304/L
.840 OD 316/L
321
347
3/4″ Sch 5 .920 .065 .6838 304/L Back to Top
1.050 OD 316/L
3/4″ Sch 10 .884 .083 .8572 304/L
1.050 OD 310
316/L
317/L
321
3/4″ Sch 40 .824 .113 1.131 254SMO
1.050 OD 304/L
304H
309
310
316/L
317/L
321
347
410
Duplex 2205
3/4″ Sch 80 .742 .154 1.474 304/L
1.050 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
3/4″ Sch 160 .612 .219 1.944 304/L
1.050 OD 309
310
316/L
317/L
321
347
Duplex 2205
3/4″Sch DXH .434 .308 2.441 304/L
1.050 OD 310
316/L
321
347
1″ Sch 5 1.185 .065 .8678 304/L Back to Top
1.315 OD 316/L
1″ Sch 10 1.097 .109 1.404 304/L
1.315 OD 309
310
316/L
317/L
321
347
Duplex 2205
1″ Sch 40 1.049 .133 1.679 304/L
1.315 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
1″ Sch 80 .957 .179 2.172 304/L
1.315 OD 304H
309
310
316/L
317/L
321
347
410
254SMO
Duplex 2205
1″ Sch 160 .815 .250 2.844 304/L
1.315 OD 310
316/L
317/L
321
347
Duplex 2205
1″Sch DXH .599 .358 3.659 310
1.315 OD 316/L
321
347
Duplex 2205
1-1/4″ Sch 5 1.530 .065 1.107 304/L Back to Top
1.660 OD 316/L
1-1/4″ Sch 10 1.442 .109 1.806 304/L
1.660 OD 309
310
316/L
317/L
321
1-1/4″ Sch 40 1.380 .140 2.273 304/L
1.660 OD 304H
309
310
316/L
317/L
321
347
Duplex 2205
1-1/4″ Sch 80 1.278 .191 2.997 304/L
1.660 OD 304H
309
310
316/L
317/L
321
347
1-1/4″ Sch 160 1.160 .250 3.765 304
1.660 OD 309
310
316/L
321
347
1-1/4″ Sch DXH .896 .382 5.214 304/L
1.660 OD 310
316/L
321
347
1-1/2″ Sch 5 1.770 .065 1.247 304/L Back to Top
1.90 OD 316/L
1-1/2″ Sch 10 1.682 .109 2.085 304/L
1.90 OD 309
310
316/L
317/L
321
347
Duplex 2205
1-1/2″Sch 40 1.610 .145 2.781 304/L
1.90 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
1-1/2″ Sch 80 1.500 .200 3.631 304/L
1.90 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
1-1/2″ Sch 160 1.338 .281 4.859 304/L Back to Top
1.90 OD 304H
310
316/L
317/L
321
347
410
Duplex 2205
1-1/2″ Sch DXH 1.100 .400 6.408 304/L
1.90 OD 304H
310
316/L
321
347
2″ Sch 5 2.245 .065 1.604 304/L Back to Top
2.375 OD 316/L
2″ Sch 10 2.157 .109 2.638 304/L
2.375 OD 309
310
316/L
317/L
321
347
Duplex 2205
2″ Sch 40 2.067 .154 3.653 304/L
2.375 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
2″ Sch 80 1.939 .218 5.022 304/L
2.375 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
254SMO
Duplex 2205
2″ Sch 160 1.687 .344 7.462 304/L
2.375 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
2″ Sch DXH 1.503 .436 9.029 304/L
2.375 OD 304H
309
310
316/L
317/L
321
347
410
2-1/2″ Sch 5 2.709 .083 2.475 304/L Back to Top
2.875 OD 316/L
2-1/2″ Sch 10 2.635 .120 2.475 304/L
2.875 OD 309
310
316/L
317/L
321
347
2-1/2″ Sch 40 2.469 .203 3.531 304/L
2.875 OD 309
310
316/L
317/L
321
347
410
Duplex 2205
2-1/2″Sch 80 2.323 .276 5.793 304/L
2.875 OD 304H
309
310
316/L
317/L
321
347
Duplex 2205
2-1/2″ Sch 160 2.125 .375 7.661 304/L
2.875 OD 304H
310
316/L
317/L
321
347
Duplex 2205
2-1/2″ Sch DXH 1.801 .552 10.01 304/L
2.875 OD 304H
310
316/L
321
347
3″ Sch 5 3.334 .083 3.029 304/L Back to Top
3.50 OD 316/L
321
3″ Sch 10 3.260 .120 4.332 304/L
3.50 OD 309
310
316/L
317/L
321
347
410
Duplex 2205
254SMO
3″ Sch 40 3.068 .216 7.576 304/L
3.50 OD 304H
309
310
316/L
317/L
321
347
Duplex 2205
254SMO
3″Sch 80 2.900 .300 10.25 304/L
3.50 OD 304H
309
316/L
317/L
321
347
Duplex 2205
254SMO
3″ Sch 160 2.624 .438 14.32 304/L
3.50 OD 304H
309
310
316/L
317/L
321
347
Duplex 2205
3″ Sch DXH 2.300 .600 18.58 304/L
3.50 OD 316/L
317/L
321
347
410
3-1/2″ Sch 10 3.760 .120 4.973 304/L Back to Top
4.00 OD 309
310
316/L
317/L
321
347
3-1/2″ Sch 40 3.548 .226 9.109 304/L
4.00 OD 304H
309
310
316/L
317/L
321
347
3-1/2″ Sch 80 3.364 .318 12.50 304/L
4.00 OD 304H
309
310
316/L
321
347
3-1/2″ Sch 160 3.000 .500 19.251 304/L
4.00 OD 316/L
3-1/2″Sch DXH 2.728 .636 22.85 304/L
4.00 OD 304H
316/L
347
4″ Sch 10 4.260 .120 5.613 304/L Back to Top
4.50 OD 309
310
316/L
317/L
321
347
Duplex 2205
4″ Sch 40 4.026 .237 10.790 304/L
4.50 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
4″ Sch 80 3.826 .337 14.98 304/L
4.50 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
4″ Sch 120 3.624 .438 19.00 304/L
4.50 OD 304H
310
317/L
321
347
Duplex 2205
4″ Sch 160 3.438 .531 22.51 304/L
4.50 OD 304H
309
310
316/L
317/L
321
347
Duplex 2205
4″Sch DXH 3.152 .647 27.54 304/L
4.50 OD 304H
310
316/L
317/L
321
347
5″ Sch 10 5.295 .134 7.77 304/L Back to Top
5.563 OD 310
316/L
317/L
321
5″ Sch 40 5.047 .258 14.62 304/L
5.563 OD 304H
309
310
316/L
317/L
321
347
Duplex 2205
5″ Sch 80 4.813 .375 20.78 304/L
5.563 OD 304H
309
310
316/L
317/L
321
347
Duplex 2205
5″ Sch 120 4.563 .500 27.04 304/L
5.563 OD 304H
316/L
321
347
5″ Sch 160 4.313 .625 32.96 304/L
5.563 OD 304H
310
316/L
321
347
5″ Sch DXH 4.063 .750 38.55 304/L
5.563 OD 304H
316/L
321
347
6″Sch 10 6.3578 .134 9.289 304/L Back to Top
6.625 OD 304H
309
310
316/L
317/L
321
347
Duplex 2205
6″ Sch 40 6.065 .280 18.97 304/L
6.625 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
254SMO
6″ Sch 80 5.761 .432 28.57 304/L
6.625 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
6″ Sch 120 5.501 .562 36.39 304/L
6.625 OD 304H
310
316/L
317/L
321
347
Duplex 2205
6″ Sch 160 5.187 .719 45.35 304/L
6.625 OD 304H
310
316/L
317/L
321
347
Duplex 2205
6″ Sch DXH 4.897 .864 53.160 304/L
6.625 OD 304H
310
316/L
321
347
Duplex 2205
8″ Sch 10 8.329 .148 13.60 304/L Back to Top
8.625 OD 310
316/L
317/L
321
347
Duplex 2205
8″ Sch 20 8.125 .250 22.360 304/L
8.625 OD 316/L
321
8″ Sch 40 7.981 .322 58.55 316/L
8.625 OD 317/L
321
347
Duplex 2205
8″ Sch 60 7.813 .406 35.64 316/L
8.625 OD 317/L
8″ Sch 80 7.625 .500 43.39 304/L
8.625 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
8″ Sch 100 7.437 .594 50.95 304/L
8.625 OD 316
321
347
8″ Sch 120 7.187 .719 60.71 304/L
8.625 OD 317/L
321
347
Duplex 2205
8″ Sch 140 7.001 .812 72.42 304/L
8.625 OD 316/L
321
347
8″Sch 160 6.813 .906 74.69 304/L
8.625 OD 310
316/L
317/L
321
347
Duplex 2205
8″ Sch DXH 6.875 .875 72.42 304/L
8.625 OD 316/L
321
10″ Sch 10 10.42 .165 18.70 304/L Back to Top
10.75 OD 310
316/L
317/L
321
10″ Sch 20 10.250 .250 28.040 304/L
10.75 OD 316/L
317/L
321
10″Sch 40 10.02 .365 40.48 304/L
10.75 OD 304H
309
310
316/L
317/L
321
347
410
Duplex 2205
10″ Sch 80S 9.75 .500 54.740 304/L
10.75 OD 310
316/L
317/L
321
347
410
10″ Sch 80 9.564 .594 364.43 304/L
10.75 OD 316/L
321
347
10″ Sch 100 9.314 .719 77.03 304/L
10.75 OD 316/L
321
10″ Sch 120 49.064 .844 89.29 304/L
10.75 OD 316/L
321
347
10″ Sch 140 8.75 1.00 104.13 304/L
10.75 OD 316/L
317/L
321
347
10″ Sch 160 8.500 1.125 115.64 304/L
8.625 OD 310
316/L
317/L
321
347
12″ Sch 10 12.39 .180 24.20 304/L Back to Top
12.750 OD 316/L
317/L
321
12″ Sch 20 12.250 .250 33.380 304/L
12.750 OD 316/L
321
12″ Sch 40S 12.00 .375 49.560 304/L
12.750 OD 304H
310
316/L
317/L
321
347
410
Duplex 2205
12″ Sch 40 11.938 .406 53.53 304/L
12.750 OD 304H
310
316/L
12″ Sch 60 11.626 .562 73.15 304/L
12.750 OD 316/L
321
12″ Sch 80S 11.750 .500 65.42 304/L
12.750 OD 304H
310
316/L
317/L
321
347
410
12″ Sch 80 11.376 .688 88.63 304/L
12.75 OD 316/L
321
347
12″ Sch 100 11.064 .844 107.32 304/L
12.75 OD 316/L
321
347
12″ Sch 120 10.75 1.00 125.49 304/L
12.75 OD 316/L
317/L
321
347
12″ Sch 140 10.50 1.125 139.67 304/L
12.750 OD 316/L
321
12″ Sch 160 10.126 1.312 160.27 304/L
12.75 OD 316/L
321
347
14″ Sch 10 13.500 .250 36.71 304/L Back to Top
14.00 OD 316/L
14″Sch 20 13.376 .312 45.61 304/L
14.00 OD 316/L
14″ Sch 40S 13.25 .375 54.57 304/L
14.00 OD 316/L
317/L
321
347
14″ Sch 40 13.124 .438 54.57 304/L
14.00 OD 316/L
14″ Sch 60 12.812 .594 85.05 304/L
14.00 OD 316/L
321
14″ Sch 80S 13.00 .500 82.77 304/L
14.00 OD 316/L
317/L
321
14″ Sch 80 12.50 .750 106.13 304/L
14.00 OD 316/L
317/L
321
347
14″ Sch 100 12.124 .938 130.85 304/L
14.00 OD 316/L
321
14″ Sch 120 11.812 1.094 150.90 304/L
14.00 OD 316/L
321
14″ Sch 140 11.50 1.250 170.21 316/L
14.00 OD 321
14″ Sch 160 11.188 1.406 189.10 316/L
14.00 OD 321
347
16″ Sch 10 15.50 .250 42.05 304/L Back to Top
16.00 OD 316/L
16″ Sch 40 15.25 .375 62.58 304/L
16.00 OD 316/L
317/L
321
16″ Sch 60 14.688 .656 107.50 304/L
16.00 OD 316/L
321
16″ Sch 80S 15.00 .500 82.77 304/L
16.00 OD 316/L
321
16″ Sch 80 14.314 .844 136.61 304/L
16.00 OD 316/L
321
16″ Sch 100 13.938 1.031 164.82 304/L
16.00 OD 316/L
321
16″ Sch 120 13.564 1.219 192.43 304/L
16.00 OD 316/L
321
16″ Sch 140 13.124 1.438 223.64 304/L
16.00 OD 321
16″ Sch 160 12.814 1.594 245.25 304/L
16.00 OD 316/L
321
347
18″ Sch 10 17.50 .250 47.39 304/L Back to Top
18.00 OD 316/L
18″ Sch 20 17.376 .312 59.03 304/L
18.00 OD 316/L
18″ Sch 40S 17.25 .375 70.59 304/L
18.00 OD 316/L
317/L
321
18″ Sch 40 16.876 .562 104.67 316/L
18.00 OD
18″ Sch 60 16.500 .750 138.17 304/L
18.00 OD 316/L
18″ Sch 80S 17.00 .500 93.45 304/L
18.00 OD 316/L
321
18″ Sch 80 16.126 1.00 125.49 304/L
18.00 OD 316/L
321
18″ Sch 100 15.688 1.156 207.95 304/L
18.00 OD 316/L
18″ Sch 120 15.25 1.375 244.14 304/L
18.00 OD 316/L
18″ Sch 140 14.876 1.562 274.22 304/L
18.00 OD
18″Sch 160 14.438 1.781 308.50 304/L
18.00 OD 316/L
321
20″ Sch 10 19.50 .275 52.73 304/L Back to Top
20.00 OD 316/L
20″ Sch 40S 19.25 .375 78.60 304/L
20.00 OD 316/L
317/L
321
20″ Sch 40 18.814 .593 123.11 304/L
20.00 OD 316/L
20″ Sch 60 18.376 .812 166.40 304/L
20.00 OD 316/L
20″ Sch 80S 19.00 .500 104.13 304/L
20.00 OD 316/L
321
20″ Sch 80 17.938 1.031 208.87 304/L
20.00 OD 316/L
20″ Sch 100 17.438 1.281 256.10 304/L
20.00 OD 316/L
20″ Sch 120 17.000 1.500 296.37 304/L
20.00 OD 316/L
20″ Sch 140 16.500 1.750 341.09 304
20.00 OD
20″ Sch 160 16.062 1.969 379.17 304/L
20.00 OD 316/L
321
24″ Sch 10 23.500 .250 63.41 304/L Back to Top
24.00 OD 316/L
24″ Sch 40S 23.25 .375 94.62 304/L
24.00 OD 316/L
24″ Sch 40 22.626 .687 171.29 304
24.00 OD
24″ Sch 60 22.062 .969 238.35 304
24.00 OD
24″ Sch 80S 23.00 .500 125.49 304/L
24.00 OD 316/L
24 Sch 80 21.564 1.218 296.58 304/L
24.00 OD 316/L
24″ Sch 100 20.938 1.531 367.39 304
24.00 OD
24″ Sch 120 20.376 1.812 429.39 304
24.00 OD
24″ Sch 160 19.312 2.344 542.13 304
24.00 OD

Stainless Steel Seamless Pipe Specifications

ASTM A312

ASTM A312 discusses  standard specification for seamless, straight-seam welded, and cold worked welded austenitic stainless steel pipe made for high-temperature and general corrosive service. More Info

ASTM A376

This specification covers seamless austenitic steel pipe intended for high-temperature central-station service. More Info

ASTM A943

This specification covers spray-formed seamless austenitic stainless steel pipe intended for high-temperature and general corrosive service. More Info

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