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Stainless Steel Welded Pipe

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Sizes & Schedule Specifications
Size Range: 2" - 48"
Schedules: 5S, 10S, STD, XS, 40, 80, 100, 120, 160, XXS


Products: Stainless steel welded pipe, stainless steel erw pipe, stainless steel efw pipe


Grades of Stainless Steel Tube

Austenitic: 201, 304/304L, 316/316L, 317/317L, 347/347H, 321/321H, 904L
Ferritic: 409, 430, 439, 441, 434, 436, 444, 446
Martensitic: 403, 410, 410S, 414/L, 441, 418, 420, 440, 416

Duplex: 2205/S31803, S32750, S32760


Manufacturing process:


Stainless steel welded tube is a steel pipe made of steel plate or strip steel that is crimped and formed by a unit and a mold. The production process of welded steel pipe is simple, the production efficiency is high, the variety and specification are many, and the equipment investment is small, but the general strength is lower than that of seamless steel pipe.



Processing for Stainless Steel Welded Pipe

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 

Production Cutting Stainless can provide production cutting for product diameters up to 4″.
Pipe Threading
Available thru 2″ in Diameter/All schedules
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.


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