Stainless Steel Instrumentation Tubing
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Stainless Steel Hydraulic Tubing & SS 316 Flexible Instrument Tubes Manufacturer in India
Nishra Overseas is a leading manufacturer, stockist, supplier and exporter of Stainless Steel Instrumentation Tubing in India, supplying affordable, good-quality SS Instrumentation Tubes to industries including natural gas, power generation, and performance-critical OEM sectors nationwide, from our manufacturing facility in Mumbai. Every Stainless Steel Instrumentation Tubing solution we supply is customized to match the client's intended application, wall thickness, and pressure requirement.
As one of the most renowned Stainless Steel Hydraulic Tubing manufacturers in India, we produce thin-walled tubes to strict dimensional tolerances, which is what allows our SS Hydraulic Tubing to operate leak-free during fluid transfer in demanding hydraulic and instrumentation circuits. Our stock of SS Instrumentation Tubing is rated to withstand pressures up to 60,000 psi, combined with high tensile strength for safe operation in critical process lines across refineries, power plants, and OEM facilities throughout the country.
We offer Welded Stainless Instrumentation Tubing in multiple grades, each suited to a specific industrial application, and every tube leaves our facility with the highest surface finish quality. Our Seamless Instrumentation Tubing can be custom-dimensioned to international standards for precise, application-specific use. Tell us your requirement and intended application, and we will engineer SS Flexible Instrumentation Tubing with the correct wall thickness and heat treatment for optimal in-service performance — including 304 SS Instrumentation Tubing in larger-than-standard dimensions on request.
Clients across India seeking high-quality, reasonably priced SS 316 Instrumentation Tubing can contact us directly for fast, responsive service. Our tubing is manufactured using the latest technology, and every batch of SS Instrumentation Coiled Tube is certification-tested at government-approved, third-party labs before dispatch, with pan-India delivery available to project sites and industrial buyers in every state.
Table of Contents
- What is Stainless Steel Instrumentation Tubing
- Stainless Steel Instrumentation Tubing Specification
- Pressure Rating of SS Hydraulic Tubing
- SS Instrumentation Tubing Weight Chart
- Applications of SS Instrumentation Tubing
- Stainless Steel Instrumentation Tubing Manufacturer in India
- Stainless Steel Instrumentation Tubing Supplier in India
- Stainless Steel Instrumentation Tubing Exporter in India
- Why Choose Nishra Overseas
- FAQs
What is Stainless Steel Instrumentation Tubing
Stainless Steel Instrumentation Tubing is precision-manufactured small-bore tubing used to carry gas, liquid, or hydraulic fluid in instrumentation, control, and measurement systems where dimensional accuracy and leak-tight performance are critical. Unlike standard process piping, instrumentation tubing is held to tight outer diameter and wall thickness tolerances, allowing it to be used with compression and flare fittings without leakage even under high pressure and vibration — a requirement that has made Indian-manufactured tubing increasingly competitive for both domestic infrastructure projects and export markets.
Our tubing is available as Welded SS Instrumentation Tubing, supplied in both coiled and straight lengths at factory-direct pricing, and as Seamless SS Instrumentation Tubing for applications demanding the highest pressure integrity. Grades include 304, 304L, 316, 316L, 321, and 904L, delivered in Polished, Annealed & Pickled, Mechanically Polished, Bright Annealed, or Cold Drawn / Mechanically Finished condition, depending on the application. Every length is fully traceable, marked with size, specification, grade/material, and heat number for quality assurance.
Stainless Steel Instrumentation Tubing Specification
Flexible Instrumentation coiled tube available in Grade 304/304L, 316/316L.
|
Parameter |
Specification |
|
Delivery Condition |
Polished, Annealed & Pickled, MP, Bright Annealed, Cold Drawn, MF |
|
Standards |
ASTM A269, ASTM A270, ASTM A213, EN 10216-5, DIN 2391, GB/T 14976, GB/T 13296 |
|
Sizes |
3.18 mm to 63 mm |
|
Thickness |
0.5 mm to 8 mm |
|
Processing Services |
Bending, Decoiling, Welding, Cutting, Punching, Moulding |
|
Technique |
Cold Rolled, Cold Drawn, Extrusion Tube, Hot Rolled |
|
Marking on Tubes |
Size, Specification, Grade/Material, Heat Number |
|
Maximum Pressure Rating |
15,000 psig |
Pressure Rating of SS Hydraulic Tubing
Stainless Steel Seamless Instrumentation Tubing stock available in Grade 904L, 304, 304L, 321, 316, 316L. Allowable stress (psi) shown by temperature (°F).
|
Pipe Size |
Schedule |
OD (in) |
Wall Thickness (in) |
100°F |
300°F |
500°F |
700°F |
750°F |
|
1″ |
40 |
1.315 |
0.133 |
2205 |
2205 |
1902 |
1703 |
1664 |
|
1″ |
80 |
1.315 |
0.179 |
3061 |
3061 |
2640 |
2365 |
2310 |
|
1″ |
160 |
1.315 |
0.250 |
4493 |
4493 |
3874 |
3471 |
3390 |
|
1-1/2″ |
40 |
1.900 |
0.145 |
1629 |
1629 |
1404 |
1258 |
1229 |
|
1-1/2″ |
80 |
1.900 |
0.200 |
2303 |
2303 |
1986 |
1779 |
1738 |
|
1-1/2″ |
160 |
1.900 |
0.281 |
3362 |
3362 |
2899 |
2597 |
2536 |
|
2″ |
40 |
2.375 |
0.154 |
1371 |
1371 |
1182 |
1059 |
1034 |
|
2″ |
80 |
2.375 |
0.218 |
1985 |
1985 |
1712 |
1534 |
1498 |
|
2″ |
160 |
2.375 |
0.344 |
3283 |
3283 |
2831 |
2536 |
2477 |
|
3″ |
40 |
3.500 |
0.216 |
1301 |
1301 |
1122 |
1005 |
982 |
|
3″ |
80 |
3.500 |
0.300 |
1844 |
1844 |
1590 |
1425 |
1391 |
|
3″ |
160 |
3.500 |
0.438 |
2787 |
2787 |
2403 |
2153 |
2103 |
|
4″ |
40 |
4.500 |
0.237 |
1102 |
1102 |
950 |
851 |
831 |
|
4″ |
80 |
4.500 |
0.337 |
1596 |
1596 |
1377 |
1233 |
1204 |
|
4″ |
160 |
4.500 |
0.531 |
2611 |
2611 |
— |
2017 |
1970 |
|
5″ |
40 |
5.563 |
0.258 |
965 |
965 |
832 |
746 |
728 |
|
5″ |
80 |
5.563 |
0.375 |
1428 |
1428 |
1231 |
1103 |
1077 |
|
5″ |
160 |
5.563 |
0.625 |
2474 |
2474 |
2133 |
1911 |
1866 |
|
6″ |
40 |
6.625 |
0.280 |
877 |
877 |
756 |
677 |
661 |
|
6″ |
80 |
6.625 |
0.432 |
1379 |
1379 |
1189 |
1065 |
1040 |
|
6″ |
160 |
6.625 |
0.719 |
2382 |
2382 |
2054 |
1840 |
1797 |
|
8″ |
40 |
8.625 |
0.322 |
771 |
771 |
665 |
596 |
582 |
|
8″ |
80 |
8.625 |
0.500 |
1218 |
1218 |
1050 |
941 |
919 |
|
8″ |
160 |
8.625 |
0.906 |
2298 |
2298 |
1982 |
1775 |
1734 |
|
10″ |
40 |
10.750 |
0.365 |
699 |
699 |
603 |
540 |
528 |
|
10″ |
80 |
10.750 |
0.594 |
1159 |
1159 |
999 |
895 |
874 |
|
10″ |
160 |
10.750 |
1.125 |
2289 |
2289 |
1974 |
1768 |
1727 |
Note: the 500°F value for 4″ Schedule 160 has been marked pending verification against the original ASTM chart — please confirm before publishing. Full temperature range (100°F–750°F) and additional sizes available on request.
SS Instrumentation Tubing Weight Chart
Approved stockist of Stainless Steel Instrument Tubing, supplying pan-India — request a free sample.
|
Nominal Size (in) |
OD (mm) |
Wall Thickness (mm) |
Schedule |
Weight (kg/m) |
Weight (lb/ft) |
|
1/2 |
21.3 |
2.769 |
40 STD |
1.268 |
0.851 |
|
1/2 |
21.3 |
3.734 |
80 STD |
1.621 |
1.088 |
|
3/4 |
26.7 |
2.870 |
40 STD |
1.684 |
1.131 |
|
3/4 |
26.7 |
3.912 |
80 STD |
2.195 |
1.474 |
|
1 |
33.4 |
3.378 |
40 STD |
2.501 |
1.679 |
|
1 |
33.4 |
4.547 |
80 STD |
3.325 |
2.172 |
|
1-1/4 |
42.2 |
3.556 |
40 STD |
3.385 |
2.273 |
|
1-1/4 |
42.2 |
4.851 |
80 STD |
4.464 |
2.997 |
|
1-1/2 |
48.3 |
3.683 |
40 STD |
4.048 |
2.718 |
|
1-1/2 |
48.3 |
5.080 |
80 STD |
5.409 |
3.361 |
|
2 |
60.3 |
3.912 |
40 STD |
5.441 |
3.653 |
|
2 |
60.3 |
5.537 |
80 STD |
7.480 |
5.022 |
|
2-1/2 |
73.0 |
5.516 |
40 STD |
8.629 |
5.793 |
|
2-1/2 |
73.0 |
7.010 |
80 STD |
11.411 |
7.661 |
|
3 |
88.9 |
5.486 |
40 STD |
11.284 |
7.576 |
|
3 |
88.9 |
7.620 |
80 STD |
15.272 |
10.253 |
|
4 |
114.3 |
6.020 |
— |
16.073 |
10.790 |
|
4 |
114.3 |
8.560 |
— |
22.318 |
14.983 |
|
6 |
168.3 |
7.112 |
40 STD |
58.263 |
18.974 |
|
6 |
168.3 |
10.973 |
80 XHY |
42.561 |
28.573 |
|
8 |
219.1 |
8.179 |
40 |
42.352 |
28.554 |
|
8 |
219.1 |
12.700 |
80 XHY |
64.627 |
43.388 |
|
10 |
273.0 |
9.271 |
40 STD |
63.301 |
40.483 |
|
10 |
273.0 |
15.088 |
80 |
95.969 |
64.429 |
|
12 |
323.9 |
9.525 |
— |
73.824 |
49.562 |
|
12 |
323.9 |
14.275 |
— |
108.966 |
73.154 |
|
14 |
355.6 |
9.525 |
STD |
81.281 |
54.568 |
|
14 |
355.6 |
15.875 |
— |
132.983 |
89.278 |
|
16 |
406.4 |
9.525 |
STD |
93.213 |
62.578 |
|
16 |
406.4 |
12.700 |
40 XHY |
123.289 |
82.770 |
|
18 |
457.0 |
9.525 |
STD |
105.144 |
70.588 |
|
18 |
457.0 |
15.875 |
— |
172.754 |
115.978 |
|
20 |
508.0 |
9.525 |
20 STD |
117.075 |
78.598 |
|
20 |
508.0 |
17.475 |
— |
211.368 |
141.901 |
|
24 |
610.0 |
9.525 |
20 STD |
140.938 |
64.618 |
|
24 |
610.0 |
19.050 |
— |
277.401 |
186.233 |
|
30 |
762.0 |
9.525 |
STD |
176.731 |
118.648 |
|
30 |
762.0 |
19.050 |
— |
348.988 |
234.293 |
|
36 |
914.0 |
9.525 |
STD |
215.525 |
142.678 |
|
36 |
914.0 |
19.050 |
— |
420.576 |
282.353 |
|
42 |
1067.0 |
9.525 |
STD |
248.319 |
166.708 |
|
42 |
1067.0 |
19.050 |
— |
492.163 |
330.413 |
|
48 |
1219.0 |
9.525 |
STD |
284.112 |
190.738 |
|
48 |
1219.0 |
22.225 |
— |
655.969 |
440.383 |
Complete weight chart across all sizes and schedules available on request.
Applications of SS Instrumentation Tubing
- Natural gas processing and transmission systems
- Power plant control and instrumentation panels
- Performance-critical OEM equipment
- Hydraulic circuits and fluid power systems
- Pressure and flow measurement instrumentation
- Panel and manifold tubing in oil & gas facilities
- Analytical and sampling systems
- Pharmaceutical and food-grade process instrumentation
Stainless Steel Instrumentation Tubing Manufacturer in India
Nishra Overseas is a leading Stainless Steel Instrumentation Tubing manufacturer in India, producing thin-walled seamless and welded tubing to strict dimensional tolerances for clients across every major industrial hub in the country. As a manufacturer — rather than a pure trading house — we control the full production chain: cold rolling, cold drawing, heat treatment, and surface finishing, which is what allows us to guarantee tight OD and wall-thickness tolerances essential for leak-free performance in instrumentation and hydraulic circuits.
We manufacture SS Instrumentation Tubing in grades 304, 304L, 316, 316L, 321, and 904L, in sizes from 3.18 mm to 63 mm and thicknesses from 0.5 mm to 8 mm, rated up to 15,000 psig. Custom dimensions beyond standard ranges, special heat treatment, and application-specific wall thickness are manufactured on request, and every batch is marked with size, specification, grade, and heat number for full traceability — meeting the requirements of EPC contractors, OEMs, and instrumentation panel builders throughout India.
Stainless Steel Instrumentation Tubing Supplier in India
As a trusted Stainless Steel Instrumentation Tubing supplier in India, and an approved stockist, we maintain ready stock of SS 304, 316, and 316L tubing in standard sizes and popular schedules, enabling fast delivery for urgent instrumentation and hydraulic tubing requirements anywhere in the country. We supply both coiled and straight-length tubing at factory-direct pricing, cutting out intermediary markups for EPC contractors, panel builders, and OEM buyers across every state.
Every consignment is certification-tested at government-approved third-party labs before dispatch, and we coordinate pan-India delivery to project sites, fabrication shops, and industrial buyers. Contact us for a free sample and see our tubing quality firsthand.
Stainless Steel Instrumentation Tubing Exporter in India
Nishra Overseas is an experienced exporter of Stainless Steel Instrumentation Tubing from India, supplying SS Hydraulic Tubing and SS 316 Flexible Instrument Tubes to industrial buyers and EPC projects across 50+ countries. Manufacturing in India allows us to offer internationally competitive pricing without compromising on quality, backed by third-party certification and export-grade packaging designed to protect tight-tolerance tubing during transit.
Whether you need seamless or welded instrumentation tubing in coiled or straight lengths, our export team handles mill test certificates (EN 10204 3.1/3.2), third-party inspection coordination, and shipping logistics end-to-end, ensuring consistent quality on every export order from India to your project site.
Why Choose Nishra Overseas
- ISO 9001:2015 certified manufacturing and quality processes
- Approved stockist of Stainless Steel Instrumentation Tubing
- Manufacturer, stockist, supplier, and exporter — all under one roof
- Available in grades 304, 304L, 316, 316L, 321, and 904L
- Rated up to 15,000 psig, with sizes from 3.18 mm to 63 mm
- Seamless and welded tubing in coiled or straight lengths
- Third-party certification testing before every dispatch
- Pan-India delivery and export to 50+ countries
- Free samples available on request