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Stainless Steel Welded Pipe

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Stainless Steel Welded / ERW Pipe Supplier, Welded Stainless Steel Pipe Exporter

Welded stainless Steel Pipe Supplier

Superior steel Overseas is prominent manufacturer, supplier and distributor of Stainless Steel Welded Pipe. SS Welded Pipes above 40" NB & up to 72" NB can be manufactured with a combination of longitudinal / circumferential joints.Technologies for Production of Welded Pipes used are TIG, Combination of Plasma and TIG , TIG with filler , TIG and SAW , SAW depending up on the wall thickness of input raw material for Pipe manufacturing.These Welded Stainless Steel Pipes used for application in Power generation – Nuclear, Thermal and Solar, Refinery and Petrochemical, Oil and Gas, Chemical and Fertilizer and Process Industries etc. We use the finest quality of raw material to produce SS welded pipes, SS ERW Pipes and SS EFW Pipes which ISO and OHSAS certified. We supply common grades of stainless in standard pipe sizes and schedules including Sch 5, Sch 10, Sch 40s and Sch 80s. We are one of the largest Outside diameter ERW Pipes Manufacturer in India.

Table of Content

  1. Stainless Steel Welded Pipe Specification
  2. Welded Stainless Steel Pipe Tolerances
  3. Nominal Wall Thickness of SS Welded Pipes
  4. ANSI Pipe SCH5 to SCH40 Chart
  5. Five classes of ASTM A358 Pipe

Stainless Steel Welded Pipe Specification

SIZE / RANGE THICKNESS SPECIFICATION
1/8" NB to 1" NB SCH.5S, 10S, 40S ASTM A-312, A-554, A-778,
A-790
API 5LC
Above 1" NB to 2" NB
Above 2" NB to 18" NB
18" NB to 36" NB
Length Up to 6 meters, custom cut lengths
Thickness 1mm to 20mm, SCH 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S as per ANSI B36.19/36.10
Finish No.1 Pickled Finish, No.4 finish, BA Finish, Electropolished Welded Pipes,
Grades TP-304/L/LN/H/N, TP-316/L/LN/H/N/Ti, TP-317L, TP-321/H, TP-347/H,
UNS S31254
UNS N08367
UNS S31500, S31803, S32205, S32750, S32760
Test Reports: PMI Test Reports, EN 10204 3.1 Certificate, NABL Approved Lab Report on Chemical and Mechanical Properties, NDT or Other Test Reports, 100% X-Ray Welding Reports

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 of SS Welded Pipes

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

ANSI Pipe SCH5 to SCH40 Chart

Pipe Size O.D. Inches 5s TRUE 5 10s TRUE 10 20 30 40s & STD TRUE 40 60
1/8 0.405 0.35 0.049 0.049 0.068 0.068
0.1383 0.1863 0.1863 0.2447 0.2447
1/4 0.54 0.049 0.065 0.065 0.088 0.088
0.257 0.3297 0.3297 0.4248 0.4248
3/8 0.675 0.049 0.065 0.065 0.091 0.091
0.3276 0.4235 0.4235 0.5676 0.5676
1/2 0.84 0.065 0.065 0.083 0.083 0.109 0.109
0.5383 0.5383 0.671 0.671 0.851 0.851
3/4 1.05 0.065 0.065 0.083 0.083 0.113 0.113
0.6838 0.6838 0.8572 0.8572 1.131 1.131
1 1.315 0.065 0.065 0.109 0.19 0.133 0.133
0.8678 0.8678 1.404 1.404 1.679 1.679
1 1/4 1.66 0.065 0.065 0.109 0.109 0.14 0.14
1.107 1.107 1.806 1.806 2.273 2.273
1 1/2 1.9 0.065 0.065 0.109 0.109 0.145 0.145
1.274 1.274 2.638 2.638 2.718 2.718
2 2.375 0.065 0.065 0.109 0.109 0.154 0.154
1.604 1.604 2.638 2.638 3.653 3.653
2 1/2 2.875 0.083 0.083 0.12 0.12 0.203 0.203
2.475 2.475 3.531 3.531 5.793 5.793
3 3.5 0.083 0.083 0.12 0.12 0.216 0.216
3.029 3.029 4.332 4.332 7.576 7.576
3 1/2 4 0.083 0.083 0.12 0.12 0.226 0.226
3.472 3.472 4.97 4.97 9.109 9.109
4 4.5 0.083 0.083 0.12 0.12 0.237 0.237 0.281
3.915 3.915 5.613 5.613 10.79 10.79 12.66
4 1/2 5 0.247
12.53
5 5.563 0.109 0.109 0.134 0.134 0.258 0.258
6.349 6.349 7.77 7.77 14.62 14.62
6 6.625 0.109 0.109 0.134 0.134 0.28 0.28
7.585 7.585 9.289 9.289 18.97 18.97
7 7.625 0.301
23.57
8 8.625 0.109 0.109 0.148 0.148 0.25 0.277 0.322 0.322 0.406
9.914 9.914 13.4 13.4 22.36 24.7 28.55 28.55 35.64
9 9.625 0.342
33.9
10 10.75 0.134 0.134 0.165 0.165 0.25 0.307 0.365 0.365 0.5
15.19 15.19 18.65 18.65 28.04 34.24 40.48 40.48 54.74
11 11.75 0.375
45.55
12 12.75 0.156 0.165 0.18 0.18 0.25 0.33 0.375 0.406 0.562
21.07 22.18 24.2 24.2 33.38 43.77 49.56 53.53 73.16
14 14 0.156 0.188 0.25 0.312 0.375 0.375 0.437 0.593
23.06 27.73 36.71 45.68 54.57 54.57 63.67 84.91
16 16 0.165 0.188 0.25 0.312 0.375 0.375 0.5 0.656
27.9 31.75 42.05 52.36 62.58 62.58 82.77 107.5
18 18 0.165 0.188 0.25 0.312 0.437 0.375 0.562 0.75
31.43 35.76 47.39 59.03 82.06 70.59 104.8 138.2
20 20 0.188 0.218 0.25 0.375 0.5 0.375 0.593 0.812
39.78 46.05 52.73 78.6 104.1 78.6 122.9 166.4
24 24 0.218 0.25 0.25 0.375 0.562 0.375 0.687 0.968
55.37 63.41 63.41 94.62 140.8 94.62 171.2 238.1
26 26 0.312 0.5 0.375
85.6 136.2 102.6
28 28 0.312 0.5 0.625 0.375
92.26 146.8 182.7 110.6
30 30 0.25 0.312 0.312 0.5 0.625 0.375
79.43 98.93 98.93 157.5 196.1 118.6
32 32 0.312 0.5 0.625 0.375 0.688
105.6 168.2 209.4 126.7 230.1
34 34 0.312 0.5 0.625 0.375 0.688
112.3 178.9 222.8 134.7 244.8
36 36 0.312 0.625 0.375 0.75
118.9 236.1 142.7 282.3
40 40 0.375
158.7
42 42 0.375
166.7
48 48 0.375
190.7

Five classes of ASTM A358 Pipe

  • class 1 - Pipe shall be double welded by processes employing filler metal in all passes and shall be completely radiographed.
  • Class 2 - Pipe shall be double welded by processes employing filler metal in all passes. No radiography is required.
  • Class 3 - Pipe shall be single welded by processes employing filler metal in all passes and shall be completely radiographed.
  • Class 4 - Same as Class 3 except that the weld pass exposed to the inside pipe surface may be made without the addition of filler metal(see 5.2.2.1 and 5.2.2.2).
  • Class 5 - Pipe shall be double welded by processes employing filler metal in all passes and shall be spot radiographed.

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