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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 the 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.

Pipe and Tube Products
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Product Variations
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Choose Table:
304/304L Stainless Steel Swipe/scroll horizontally to view full table
304/304L Stainless Steel
Sch
5
Sch
10
Sch
20
Sch
40
Sch
80
NPS
.125"
 C C C C
NPS
.25"
 C C C
NPS
.375"
 C C C C
NPS
.5"
 C
NPS
.75"
 C
NPS
1"
 C
NPS
1.25"
 C
NPS
1.5"
 C
NPS
2"
 C
NPS
2.5"
 C
NPS
3"
 C
NPS
3.5"
 C
NPS
4"
 C
NPS
5"
 C C C C C
NPS
6"
 C C
NPS
7"
 C C C C C
NPS
8"
NPS
9"
 C C C C C
NPS
10"
 C C
NPS
11"
 C C C C C
NPS
12"
 C C
NPS
14"
 C C C C C
NPS
16"
 C C C C
NPS
18"
 C C C C C
NPS
20"
 C C C C C
NPS
22"
 C C C C C
NPS
24"
 C C C C C
NPS
26"
 C C C C C
NPS
28"
 C C C C C
NPS
30"
 C C C C C
NPS
32"
 C C C C C
NPS
34"
 C C C C C
NPS
36"
 C C C C C
NPS
42"
 C C C C C
NPS
48"
 C C C C C
Sch
5
Sch
10
Sch
20
Sch
40
Sch
80
316/316L Stainless Steel Swipe/scroll horizontally to view full table
316/316L Stainless Steel
Sch
5
Sch
10
Sch
20
Sch
40
Sch
80
NPS
.125"
 C C C C C
NPS
.25"
 C C C C
NPS
.375"
 C C C C
NPS
.5"
 C
NPS
.75"
 C C C
NPS
1"
 C C
NPS
1.25"
 C
NPS
1.5"
 C
NPS
2"
 C
NPS
2.5"
 C C C
NPS
3"
 C C
NPS
3.5"
 C C
NPS
4"
 C C
NPS
5"
 C C C C C
NPS
6"
 C C C
NPS
7"
 C C C C C
NPS
8"
 C C
NPS
9"
 C C C C C
NPS
10"
 C C C
NPS
11"
 C C C C C
NPS
12"
 C C C
NPS
14"
 C C C C C
NPS
16"
 C C C C C
NPS
18"
 C C C C
NPS
20"
 C C C C C
NPS
22"
 C C C C C
NPS
24"
 C C C C C
NPS
26"
 C C C C C
NPS
28"
 C C C C C
NPS
30"
 C C C C C
NPS
32"
 C C C C C
NPS
34"
 C C C C C
NPS
36"
 C C C C C
NPS
42"
 C C C C C
NPS
48"
 C C C C C
Sch
5
Sch
10
Sch
20
Sch
40
Sch
80
321/321H Stainless Steel Swipe/scroll horizontally to view full table
321/321H Stainless Steel
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
NPS
.125"
 C
NPS
.25"
 C C
NPS
.375"
 C
NPS
.5"
 C C
NPS
.75"
 C C C C
NPS
1"
 C C C C
NPS
1.25"
 C C C C
NPS
1.5"
 C C C C
NPS
2"
 C C C C
NPS
2.5"
 C C C C
NPS
3"
 C C C C
NPS
3.5"
 C C C C
NPS
4"
 C C C C
NPS
5"
 C C C C
NPS
6"
 C C C C
NPS
8"
 C C C C
NPS
10"
 C C
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
347/347H Stainless Steel Swipe/scroll horizontally to view full table
347/347H Stainless Steel
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
NPS
.125"
 C
NPS
.25"
 C C
NPS
.375"
 C
NPS
.5"
 C C
NPS
.75"
 C C C C
NPS
1"
 C C C C
NPS
1.25"
 C C C C
NPS
1.5"
 C C C C
NPS
2"
 C C C C
NPS
2.5"
 C C C C
NPS
3"
 C C C C
NPS
3.5"
 C C C C
NPS
4"
 C C C C
NPS
5"
 C C C C
NPS
6"
 C C C C
NPS
8"
 C C C C
NPS
10"
 C C
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
Duplex 2205 Swipe/scroll horizontally to view full table
Duplex 2205
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
NPS
.125"
 C
NPS
.25"
 C C
NPS
.375"
 C
NPS
.5"
 C C
NPS
.75"
 C C C C
NPS
1"
 C C C C
NPS
1.25"
 C C C C
NPS
1.5"
 C C C C
NPS
2"
 C C C C
NPS
2.5"
 C C C C
NPS
3"
 C C C C
NPS
3.5"
 C C C C
NPS
4"
 C C C C
NPS
5"
 C C C C
NPS
6"
 C C C C
NPS
8"
 C C C C
NPS
10"
 C C
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
317L Stainless Steel Swipe/scroll horizontally to view full table
317L Stainless Steel
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
NPS
.125"
 C
NPS
.25"
 C C
NPS
.375"
 C
NPS
.5"
 C C
NPS
.75"
 C C C C
NPS
1"
 C C C C
NPS
1.25"
 C C C C
NPS
1.5"
 C C C C
NPS
2"
 C C C C
NPS
2.5"
 C C C C
NPS
3"
 C C C C
NPS
3.5"
 C C C C
NPS
4"
 C C C C
NPS
5"
 C C C C
NPS
6"
 C C C C
NPS
8"
 C C C C
NPS
10"
 C C
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
310/310H/310S Swipe/scroll horizontally to view full table
310/310H/310S
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
NPS
.125"
 C
NPS
.25"
 C C
NPS
.375"
 C
NPS
.5"
 C C
NPS
.75"
 C C C C
NPS
1"
 C C C C
NPS
1.25"
 C C C C
NPS
1.5"
 C C C C
NPS
2"
 C C C C
NPS
2.5"
 C C C C
NPS
3"
 C C C C
NPS
3.5"
 C C C C
NPS
4"
 C C C C
NPS
5"
 C C C C
NPS
6"
 C C C C
NPS
8"
 C C C C
NPS
10"
 C C
Sch
.165"
Sch
.365"
Sch
5
Sch
10
Sch
40
Sch
80
Processing
Bar & Structural Cutting
More Info
Production Cutting
More Info
Tubular Polishing
More Info
Specifications
ASTM A312
Value-Added Services
Beveling

Beveling Stainless Steel tubes contain one end angled,  so that it mates with a complementary tube end. Tubes can be beveled for certain applications in order to make welding of stainless steel tubes easier, which saves weld prep time and money compared to hand cutting.

Heat Treating & Annealing

Penn Stainless Products can heat treat some 400 series stainless steel seamless tube. Heat treating realizes stress as a result of hardening, depending upon the chemistry of the metal being treated. Heat treating is also used for tempering, quenching, normalizing, and solution annealing.

Honing & Turning

During the honing/turning process, an abrasive rotating tool removes metal from the interior surface of a cylinder, pipe, or tube. The main purpose of honing is to finish the surface to a particular diameter and/or desired cylindrical geometric design. Honing is typically a secondary machining operation that completes a produce/part,  relieves stress created during production, or corrects features of the finished product. A typical production cycle is to drill, ream, heat treat, then hone.

Polishing

Positive Material Identification (PMI)

In some cases, it may be necessary to complete additional positive material identification testing. Penn Stainless Products can complete this testing in house or we can work with an independent laboratory to complete the testing. Please contact us for specific requirements.

UT Testing

Ultrasonic Testing (UT) utilizes sound energy at high frequencies, in order to provide examinations and measurements of the stainless steel product. This aids in flaw detection/evaluation, dimensional measurements, etc.

Tolerances

Welded Stainless Steel Pipe Tolerances:

NPS DesignatorPermissible 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 DesignatorOutside Diameter in.Schedule 5S in.Schedule 10S in.Schedule 40S in.Schedule 80S in.
1/40.540.0650.0880.119
3/80.6750.0650.0910.126
1/20.840.0650.0830.1090.147
3/41.050.0650.0830.1130.154
11.3150.0650.1090.1330.179
1 1/41.660.0650.1090.140.191
1 1/21.90.0650.1090.1450.2
22.3750.0650.1090.1540.218
2 1/22.8750.0830.120.2030.276
33.50.0830.120.2160.3
3 1/240.0830.120.2260.318
44.50.0830.120.2370.337
55.5630.1090.1340.2580.375
66.6250.1090.1340.280.432
88.6250.1090.1480.3220.5
1010.750.1340.1650.3650.5
1212.750.1560.180.3750.5