Stainless Steel 316 Pipe & Tube Manufacturer, Supplier & Exporter in India
Amardeep Steel Centre is an ISO 9001:2015 certified manufacturer, stockist and exporter of stainless steel 316 pipes and tubes, supplying ASTM A312 and ASME SA312 TP316 material to oil and gas, marine, pharmaceutical, chemical and power projects since 1982. SS 316 pipe is held ex-stock in Mumbai in seamless, ERW, EFW and LSAW construction from 1/8 inch NB to 30 inch NB, in schedules from SCH 5S through XXS, and is dispatched with full documentation to more than 40 countries.
Whether your purchase order describes the material as 316 stainless steel pipe, SS 316 pipe, stainless 316 pipe or stainless steel pipe 316, the alloy, specification and
test certification are identical. Beyond nominal pipe schedules we also stock 316 stainless steel tubing in precision and instrumentation sizes to ASTM A269 and ASTM A213, where the OD and wall thickness tolerances are tighter than any pipe schedule allows.
Every consignment ships with an EN 10204 3.1 or 3.2 Mill Test Certificate and IBR Form III-D. Third party inspection by SGS, Bureau Veritas, TUV or Lloyd's is available on request. Request a quote with your size, schedule and quantity and our technical team will confirm price and availability the same working day.
What Is Stainless Steel 316 Pipe?
Stainless steel 316 pipe is an austenitic, molybdenum bearing stainless steel pipe manufactured to ASTM A312 and ASME SA312 TP316. What separates it from the standard austenitic grades is the deliberate addition of 2 to 3 percent molybdenum. Molybdenum raises the alloy's resistance to electrochemical attack, specifically the pitting and crevice corrosion initiated by chloride ions, which is why 316 is the default specification for marine piping, offshore platforms, chemical process lines, pharmaceutical fluid systems and food and beverage installations where 304 stainless steel pipe provides insufficient protection.
The same alloy is specified internationally under several equivalent designations: UNS S31600, Werkstoff 1.4401, JIS SUS 316 and the Euronorm name X5CrNiMo17-12-2. All describe identical chemistry and the same underlying ASTM A312 TP316 product. Our article on what stainless steel 316 is, its uses, grades and composition covers the metallurgy in more depth.
SS 316 vs 304 vs 316 vs 316H vs 316Ti: Which Grade Do You Need?
|
Grade |
Key difference |
Best for |
|---|---|---|
|
Standard molybdenum bearing austenitic grade, carbon up to 0.08 percent |
General marine, chemical and pharmaceutical piping |
|
|
No molybdenum, lower chloride resistance, lower cost |
Non marine and general industrial service |
|
|
Low carbon at 0.03 percent maximum, superior weldability, no carbide precipitation |
Welded assemblies, sanitary and pharmaceutical lines |
|
|
Higher carbon at 0.04 to 0.10 percent, better creep strength |
High temperature service above 500 C |
|
|
Titanium stabilised, resists carbide precipitation at temperature |
High temperature welded fabrications |
For welded fabrications, 316 is generally preferred over 316. The lower carbon content of 0.03 percent maximum against 0.08 percent eliminates carbide precipitation, or sensitisation, in the heat affected zone, preserving intergranular corrosion resistance without a post weld anneal. For a side by side comparison of the two most commonly confused grades, see 304 vs 316 stainless steel.
Stainless Steel 316 Pipe Specifications
|
Specification |
Details |
|---|---|
|
Standards |
ASTM A312, ASME SA312, ASTM A358, ASME SA358, ASTM A249, ASTM A269, ASTM A213 |
|
Grade designations |
TP316, UNS S31600, Werkstoff 1.4401, JIS SUS 316, X5CrNiMo17-12-2 |
|
Dimensions |
ASTM, ASME B36.19M, API |
|
Seamless 316 pipe size |
1/8 inch NB to 16 inch NB |
|
ERW 316 pipe size |
1/2 inch NB to 24 inch NB |
|
EFW 316 pipe size |
6 inch NB to 100 inch NB |
|
Overall size range |
1/8 inch NB to 30 inch NB |
|
Schedule |
SCH 5S, 10S, 20, 30, 40S, STD, 60, 80S, XS, 100, 120, 140, 160, XXS |
|
Type |
Seamless, ERW, welded, fabricated, LSAW |
|
Form |
Round, square, rectangular, oval, hydraulic, hollow section, coil |
|
Length |
Single random, double random, fixed and cut length |
|
End finish |
Plain, bevelled, threaded, with plastic end caps |
|
Other standards |
EN 10216-5 TC1 and TC2, AD 2000, PED 97/23/EC, NACE MR0175 / ISO 15156 |
|
Documentation |
EN 10204 3.1 / 3.2 MTC, IBR Form III-D, NABL lab reports, TPI on request |
316 Stainless Steel Pipe Size and Weight Chart
Weights are calculated for TP316 at a density of 8000 kg per cubic metre and are indicative for estimation purposes.
|
NB |
OD (mm) |
SCH 10S WT (mm) |
SCH 10S kg/m |
SCH 40S WT (mm) |
SCH 40S kg/m |
SCH 80S WT (mm) |
SCH 80S kg/m |
|---|---|---|---|---|---|---|---|
|
1/2" |
21.34 |
2.11 |
1.02 |
2.77 |
1.29 |
3.73 |
1.65 |
|
3/4" |
26.67 |
2.11 |
1.30 |
2.87 |
1.71 |
3.91 |
2.23 |
|
1" |
33.40 |
2.77 |
2.11 |
3.38 |
2.54 |
4.55 |
3.29 |
|
1 1/2" |
48.26 |
2.77 |
3.14 |
3.68 |
4.11 |
5.08 |
5.49 |
|
2" |
60.33 |
2.77 |
3.97 |
3.91 |
5.52 |
5.54 |
7.60 |
|
3" |
88.90 |
3.05 |
6.51 |
5.49 |
11.47 |
7.62 |
15.51 |
|
4" |
114.30 |
3.05 |
8.42 |
6.02 |
16.32 |
8.56 |
22.67 |
|
6" |
168.28 |
3.40 |
13.93 |
7.11 |
28.69 |
10.97 |
43.21 |
|
8" |
219.08 |
3.76 |
20.06 |
8.18 |
43.20 |
12.70 |
65.63 |
|
10" |
273.05 |
4.19 |
27.90 |
9.27 |
61.16 |
15.09 |
97.72 |
|
12" |
323.85 |
4.57 |
36.24 |
9.53 |
74.62 |
17.48 |
134.15 |
|
16" |
406.40 |
4.78 |
47.61 |
9.53 |
94.55 |
16.66 |
163.60 |
|
20" |
508.00 |
5.54 |
69.15 |
9.53 |
118.66 |
19.05 |
234.30 |
|
24" |
609.60 |
6.35 |
95.16 |
9.53 |
142.67 |
20.62 |
303.88 |
For a size not shown, use our steel weight calculator or the full pipe dimension chart. The schedule system itself is explained in our guide to the difference between Schedule 40 and Schedule 80 pipe.
316 Stainless Steel Tubing Sizes
In addition to nominal pipe sizes, we supply 316 stainless steel tubing in precision, instrumentation and hydraulic sizes to ASTM A269 and ASTM A213, where the fractional inch outside diameter is the controlling dimension.
|
Tube OD |
Wall thickness range |
Form |
|---|---|---|
|
1/16 inch to 3/8 inch |
0.010 inch to 0.083 inch |
Seamless instrumentation tube |
|
1/2 inch to 1 inch |
0.028 inch to 0.125 inch |
Seamless and welded precision tube |
|
1 1/4 inch to 2 1/2 inch |
0.065 inch to 0.250 inch |
Hydraulic and structural tube |
|
3 inch and above |
0.083 inch and above |
Heat exchanger and structural tube |
Related tube products: 316 stainless steel micro tubing, 316 coil tubing, welded austenitic stainless steel tube to ASTM A249 and A269 and stainless steel instrumentation tubing.
Chemical Composition of Stainless Steel 316 Tubes & Pipes
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
|---|---|---|---|---|---|---|---|---|
|
TP316 (S31600) |
0.08 max |
2.00 max |
0.75 max |
0.045 max |
0.030 max |
16.0 to 18.0 |
2.00 to 3.00 |
10.0 to 14.0 |
Values per ASTM A312 and ASME SA312 TP316.
Mechanical and Physical Properties of SS 316 Pipes & Tubes
|
Property |
Value |
|---|---|
|
Tensile strength, minimum |
515 MPa (75 ksi) |
|
Yield strength 0.2 percent proof, minimum |
205 MPa (30 ksi) |
|
Elongation in 50 mm, minimum |
40 percent |
|
Hardness, HRB maximum |
95 |
|
Hardness, Brinell maximum |
217 |
|
Density |
8000 kg per cubic metre |
|
Elastic modulus |
193 GPa |
|
Thermal conductivity at 100 C |
16.3 W per m.K |
|
Thermal conductivity at 500 C |
21.5 W per m.K |
|
Thermal expansion 0 to 100 C |
15.9 micrometre per m per C |
|
Specific heat |
500 J per kg.K |
|
Electrical resistivity |
740 nano ohm metre |
|
Maximum continuous service temperature |
925 C |
|
Maximum intermittent service temperature |
870 C |
For weight and volume calculations see our reference on the density of stainless steel 316.
Equivalent Grades of Stainless Steel 316
|
Grade |
UNS |
Werkstoff |
Euronorm name |
Old British BS |
Swedish SS |
JIS |
|---|---|---|---|---|---|---|
|
SS 316 |
S31600 |
1.4401 |
X5CrNiMo17-12-2 |
316S31 |
2347 |
SUS 316 |
Pressure Rating of SS 316 Seamless Pipe
|
NPS |
OD (inch) |
Schedule |
Wall thickness (inch) |
Max working pressure (PSI) |
Max working pressure (Bar) |
|---|---|---|---|---|---|
|
1/2 |
0.840 |
SCH 40S |
0.109 |
3000 |
207 |
|
1/2 |
0.840 |
SCH 80S |
0.147 |
4000 |
276 |
|
1 |
1.315 |
SCH 40S |
0.133 |
2000 |
138 |
|
1 |
1.315 |
SCH 80S |
0.179 |
2800 |
193 |
|
2 |
2.375 |
SCH 40S |
0.154 |
1500 |
103 |
|
2 |
2.375 |
SCH 80S |
0.218 |
2000 |
138 |
|
4 |
4.500 |
SCH 40S |
0.237 |
1000 |
69 |
|
4 |
4.500 |
SCH 80S |
0.337 |
1400 |
96 |
|
6 |
6.625 |
SCH 40S |
0.280 |
750 |
52 |
|
6 |
6.625 |
SCH 80S |
0.432 |
1100 |
76 |
|
10 |
10.750 |
SCH 40S |
0.365 |
600 |
41 |
|
10 |
10.750 |
SCH 80S |
0.593 |
900 |
62 |
Indicative values based on Barlow's formula at ambient temperature for ASTM A312 TP316 seamless pipe. Verify against ASME B31.3 or the applicable piping code before use in engineering design. These figures do not constitute a design specification.
Allowable Stress for SS 316 Pipe per ASME B31.3
|
Temperature (C) |
38 |
100 |
200 |
300 |
400 |
500 |
|---|---|---|---|---|---|---|
|
Allowable stress (MPa) |
138 |
138 |
126 |
120 |
113 |
103 |
Corrosion Resistance, PREN and Critical Pitting Temperature
SS 316 has a Pitting Resistance Equivalent Number of approximately 24 to 26, calculated as percent Cr plus 3.3 times percent Mo plus 16 times percent N. That exceeds Grade 304 at roughly 18 to 20, which is the quantitative basis for specifying 316 in chloride service. Critical Pitting Temperature for 316 in 1 molar sodium chloride typically exceeds 15 C, against below 0 C for 304.
Where chloride concentration, temperature or stress corrosion cracking risk exceeds what 316 can handle, step up to 2205 duplex, 2507 super duplex or 904L super austenitic. Our comparison of 316 and 904L sets out where the crossover point falls.
Manufacturing Process of SS 316 Pipes
Seamless to ASTM A312 and ASME SA312
Produced by hot extrusion or rotary piercing from solid billet, followed by cold drawing and solution annealing at 1010 to 1120 C. With no seam weld and uniform wall thickness, seamless 316 pipe is the choice for high pressure and high cycle fatigue service.
ERW to ASTM A312 and ASME SA312
Strip is roll formed into a tube and seam welded by electric resistance, then the weld seam is heat treated so its corrosion resistance matches the parent metal. ERW 316 pipe is the standard for general process piping and HVAC at lower cost than seamless.
EFW to ASTM A358 and ASME SA358
Electric fusion welded from plate or strip, this is the standard route for large diameter fabricated pipe from 6 inch to 100 inch in chemical plant and desalination applications. See our ASTM A358 and ASME B36.19M pipe range.
LSAW
Longitudinally submerged arc welded, used for heavy wall structural and high pressure large diameter applications where EFW is insufficient. All welded 316 pipe and tube is solution annealed and pickled before despatch.
Choosing between the two routes is covered in our guide to the difference between seamless and welded pipe.
Surface Finish Options for SS 316 Pipes & Tubes
|
Finish |
Typical roughness |
Suited to |
|---|---|---|
|
Bright Annealed (BA) |
Ra 0.5 micrometre or better |
Pharmaceutical, food and semiconductor hygienic piping |
|
Annealed and Pickled (AP) |
Ra 1.0 micrometre nominal |
Industrial, marine and offshore service |
|
Polished or mirror |
Ra 0.25 micrometre or better |
Architectural and decorative structural work |
|
Electropolished (EP) |
Ra 0.25 to 0.38 micrometre |
High purity and sanitary systems |
|
Passivated to ASTM A380 |
Not applicable |
Restoring the oxide layer after welding or machining |
Dimensional Tolerances for SS 316 Pipes & Tubes
Outside diameter tolerance
|
OD (inch) |
Tolerance (inch) |
Tolerance (mm) |
|---|---|---|
|
Under 1/2 |
plus or minus 0.015 |
plus or minus 0.38 |
|
1/2 to 1 1/2 |
plus or minus 0.031 |
plus or minus 0.79 |
|
Over 1 1/2 to 4 |
plus or minus 0.031 |
plus or minus 0.79 |
|
Over 4 to 8 |
plus or minus 0.047 |
plus or minus 1.19 |
|
Over 8 to 12 |
plus or minus 0.062 |
plus or minus 1.57 |
|
Over 12 to 18 |
plus or minus 0.078 |
plus or minus 1.98 |
|
Over 18 to 24 |
plus or minus 0.093 |
plus or minus 2.36 |
|
Over 24 to 30 |
plus or minus 0.125 |
plus or minus 3.18 |
|
Tolerance type |
Value |
|---|---|
|
Wall thickness, all sizes |
plus or minus 12.5 percent |
|
Fixed length |
plus 10 mm, minus 0 mm |
|
Standard lengths |
Single random and double random per ASTM A312 and A269 |
Dual Certified 316 / 316 Pipe
Dual certified 316 and 316 pipe complies with both UNS S31600 and UNS S31603 simultaneously, meeting the 0.03 percent maximum carbon limit of 316 while retaining the minimum nickel content required for 316. That allows one heat to be used in both welded and unwelded service, which simplifies inventory on large fabrication packages. Amardeep supplies dual certified pipe on request, so confirm the requirement on your purchase order.
SS 316 Pipe Price per Kg in India
Stainless steel 316 pipe prices move with nickel and molybdenum input costs and the prevailing alloy surcharge, and vary further by size, schedule, manufacturing route, surface finish and order quantity. The ranges below are indicative for standard schedules in trade quantities.
|
Type |
Schedule |
Indicative price (INR per kg) |
|---|---|---|
|
SS 316 seamless pipe |
SCH 10S |
300 to 340 |
|
SS 316 seamless pipe |
SCH 40S |
320 to 360 |
|
SS 316 ERW and welded pipe |
SCH 10S |
260 to 300 |
|
SS 316 ERW and welded pipe |
SCH 40S |
280 to 320 |
|
SS 316 pipe, bulk or export order |
All schedules |
On request, improved rates for container loads |
Get today's exact price for your size and we will quote against your specific grade, NPS, schedule and tonnage.
Ex Stock Availability
|
NB range |
Schedules ex stock |
Form |
|---|---|---|
|
1/8 inch to 2 inch |
SCH 5S, 10S, 40S, 80S, 160 |
Seamless and welded |
|
2 1/2 inch to 6 inch |
SCH 10S, 40S, 80S |
Seamless and welded |
|
8 inch to 24 inch |
SCH 10S, 40S, 80S |
Welded, EFW and LSAW |
|
Above 24 inch |
To order |
Fabricated to ASTM A358 |
If your size is not listed we can manufacture to custom specification within two to four weeks. Check availability.
Quality Assurance, Testing and Documentation
Every batch of Amardeep SS 316 pipe and tube is supplied with:
- Mill Test Certificate to EN 10204 3.1 or 3.2
- IBR Test Certificate, Form III-D, for Indian Boiler Regulation compliance on IBR pipes and tubes
- Chemical and mechanical test reports covering tensile, yield, elongation and hardness
- Intergranular corrosion testing to ASTM A262 Practice A and E
- NDT reports covering ultrasonic, radiographic, eddy current and magnetic particle testing
- Positive Material Identification on request
- Hydrostatic and flattening test results
- Third party inspection by SGS, Bureau Veritas, TUV or Lloyd's on request
We are ISO 9001:2015 certified. View our quality certifications and testing capabilities.
Applications of Stainless Steel 316 Pipes & Tubes
- Marine and shipbuilding: seawater piping, boat fittings and offshore platform lines
- Oil and gas: offshore pipelines, refinery process lines and high corrosion service to NACE MR0175
- Chemical and petrochemical: process piping, storage tanks and chemical transfer lines
- Pharmaceutical, food and beverage: sanitary tubing, hygienic piping and processing equipment
- Power generation:heat exchanger tubes, condenser tubes and boiler tubes
- Architecture and construction: coastal structures, railings and handrails
- Pulp and paper, water treatment and desalination: corrosive slurry and brine handling
Export and Packaging
Amardeep Steel Centre exports stainless steel 316 pipe to the UAE, Saudi Arabia, Qatar, Oman, USA, UK, Germany, Netherlands, Singapore, Malaysia, Vietnam, Indonesia and Australia on FOB, CIF and EXW terms. Pipes are bundled with steel strips, wrapped in waterproof covering and packed in wooden crates or seaworthy export packing as required. Each length is marked with NB, schedule, specification, grade, heat number and manufacturer's symbol for full traceability.
Why Choose Amardeep Steel for SS 316 Pipes & Tubes
- Established in 1982 with more than 40 years supplying stainless steel pipes, tubes and stainless steel fittings
- ISO 9001:2015 certified with EN 10204 3.1 and 3.2 MTC and IBR Form III-D as standard
- Ex stock dispatch on standard sizes, with custom manufacture in two to four weeks
- Full in house quality control, PMI, NDT and third party inspection support
- Exports to the UAE, USA, Europe, Saudi Arabia and Southeast Asia with export documentation handled in house
- Technical support on grade selection, schedule and specification from our piping solutions team
Related Products
316 family
SS 316 Pipes & Tubes, SS 316H Pipes & Tubes, SS 316Ti Pipes & Tubes, SS 316 Flanges, SS 316 Forged Fittings, SS 316 Buttweld Fittings, SS 316/316 Pipe Fittings, SS 316 Plates, Sheets & Coils
Other grades
SS 304, SS 304L, SS 304H, SS 310S, SS 317L, SS 321, SS 347, SS 904L
Parent category
Get a Competitive Quote for Stainless Steel 316 Pipes & Tubes
Amardeep Steel Centre supplies SS 316 pipe and tube with full documentation, including EN 10204 3.1 MTC, IBR Form III-D and third party inspection on request. Ex stock in Mumbai and exported worldwide. Request a quote or contact our Mumbai office with your requirement.
Frequently Asked Questions About Stainless Steel 316 Pipes & Tubes
What is stainless steel 316 pipe?
Stainless steel 316 pipe is an austenitic pipe made to ASTM A312 and ASME SA312 TP316, containing 16 to 18 percent chromium, 10 to 14 percent nickel and 2 to 3 percent molybdenum. The molybdenum gives it superior resistance to chloride pitting and crevice corrosion compared with Grade 304.
What is the difference between 304 and 316 stainless steel pipe?
316 contains 2 to 3 percent molybdenum and 304 contains none. That raises the PREN of 316 to roughly 24 to 26 against 18 to 20 for 304, which translates to far better performance in seawater, chloride bearing chemicals and coastal atmospheres. 304 remains more economical for general industrial service.
What is the difference between SS 316 and SS 316 pipe?
The difference is carbon content. 316 permits up to 0.08 percent carbon while 316 is capped at 0.03 percent. The lower carbon in 316 prevents carbide precipitation in the weld heat affected zone, so it is specified for welded assemblies that cannot be annealed after fabrication.
Is 316 stainless steel pipe magnetic?
In the solution annealed condition 316 is austenitic and essentially non magnetic. Cold working such as bending, swaging or heavy machining can induce a small amount of martensite and produce slight magnetic response, which is normal and does not indicate the wrong grade.
Is SS 316 pipe suitable for marine and seawater applications?
Yes for most marine service, including splash zone piping, boat fittings and coastal structures. For continuous immersion in warm, stagnant or high chloride seawater, 2205 duplex, 2507 super duplex or 904L offer greater margin against pitting and crevice attack.
What is the maximum service temperature for SS 316 pipe?
Around 925 C in continuous service and 870 C in intermittent service for oxidation resistance. For sustained duty above 500 C where creep strength governs, 316H is the correct specification because of its higher carbon content.
What schedules are available for 316 stainless steel pipe?
Schedules from SCH 5S and 10S through 40S, STD, 80S, XS, 120, 160 and XXS, depending on nominal pipe size. SCH 10S and 40S cover most process piping, while 160 and XXS are reserved for high pressure service.
What is the difference between seamless and welded 316 pipe?
Seamless pipe is extruded or drawn from solid billet with no weld seam, giving uniform wall thickness and higher pressure capability. Welded pipe is formed from strip and seam welded, then heat treated, and is more economical at larger diameters and in non critical service.
What is the price of SS 316 pipe per kg?
Indicative pricing runs from around 260 to 360 rupees per kg depending on seamless or welded construction, schedule and quantity, and moves with nickel and molybdenum surcharges. Send your size, schedule and tonnage for a firm current quotation.
What is 316 stainless steel tubing used for?
316 tubing is used where dimensional precision matters more than bore size, including instrumentation and impulse lines, hydraulic circuits, heat exchanger and condenser bundles, sanitary process lines and structural or architectural tube.
What sizes are available for 316 SS tube?
From 1/16 inch outside diameter instrumentation tube with 0.010 inch wall up to 2 1/2 inch hydraulic and structural tube with 0.250 inch wall, to ASTM A269 and ASTM A213. Pipe sizes run separately from 1/8 inch NB to 30 inch NB.
How do I get a test certificate for SS 316 pipe from Amardeep Steel?
Every despatch includes an EN 10204 3.1 or 3.2 Mill Test Certificate and IBR Form III-D as standard. Request 3.2 certification or third party inspection by SGS, Bureau Veritas, TUV or Lloyd's at the time of order and we will arrange it before despatch.
