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

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.
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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