01
SS 304 Pipe
Grade 304, UNS S30400, contains approximately 18% chromium and 8% nickel with carbon limited to 0.08% maximum. Stainless steel 304 pipe is widely used for general process, water and fabrication applications.
View SS 304 PipeStainless Steel Pipes Manufacturer in India
MLTI Private Limited (Moonlight Tube Industries) is a manufacturer, supplier and exporter of stainless steel pipes since 2008, based in Gujarat, India. Our inventory has a combined annual capacity of approximately 8,000 MT across stainless steel ERW pipes, tubes, square pipes and rectangular pipes, including pipes manufactured to ASTM A312 and ASME SA-312. Outside diameters and nominal wall thicknesses follow ASME B36.19M. The product lineup covers 11 distinct grades: 304, 304L, 310, 316, 316L, 316Ti, 321, 321H, 347, 347H, and 904L.
As a stainless steel pipe manufacturer in India, we supply 1/8" NB to 10" NB in SCH 10S, 40S and 80S to ASME B36.19M, with SCH 5S from 1/2" NB and SCH 20S offered as an additional non-standard wall through seamless and welded (ERW) manufacturing routes. Seamless stainless steel pipe starts as a solid billet that we pierce and draw, so no weld seam runs along its length. Stainless steel welded pipe begins as a rolled strip that we form and fuse along a single longitudinal seam. Seamless handles higher pressure because it has no weld seam to derate under ASME B31.3. Welded pipe costs less and is easier to source in larger diameters.
Chromium provides corrosion resistance, while nickel, molybdenum or stabilising elements vary according to grade and service requirements. Sugar, chemical, pharmaceutical, food, power and water-treatment plants use our SS pipes for process, utility, and high-temperature services. PMI, tensile and hardness testing support EN 10204 3.1 certification. We also hold ISO 14001 and 45001 certifications with BIS, EIL, IBR and PED approvals. Being a reliable stainless steel supplier, we ensure that the quotation will be issued within 1-2 days.
Specifications of Stainless Steel Pipes
Stainless steel pipe specifications are listed below, covering grades, standards, sizes and manufacturing routes for pipe stainless steel products.
| Parameter | Value |
|---|---|
| Grades | 304, 304L, 310, 316, 316L, 316Ti, 321, 321H, 347, 347H, 904L |
| Applicable Standards | ASTM A312 / ASME SA-312: Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes |
| Dimensional Standard | ASME B36.19M |
| Nominal bore | 1/8" NB to 10" NB |
| Schedule | SCH 5S, 10S, 40S, 80S per ASME B36.19M; SCH 20S supplied as an additional non-standard wall |
| Wall thickness | 1.24 mm to 12.70 mm |
| Manufacturing process | Seamless, welded (including ERW) |
| Section profile | Round pipe to ASTM A312 / ASME B36.19M; square and rectangular hollow sections to ASTM A554 (welded stainless steel mechanical tubing, non-pressure) |
| Length | Single random, double random and cut lengths |
| Finish | Mill finish, pickled and passivated |
| End type | Plain end; bevelled to order |
Stainless Steel Pipe Grades
Eleven grades are available, with selection based on carbon content, molybdenum, stabilising elements and operating conditions.
02
SS 304L Pipe
304L limits carbon to 0.035% maximum, making it suitable for welded construction where post-weld solution annealing is not practical.
View SS 304L Pipe
03
SS 310 Pipe
SS 310 pipe, UNS S31000, carries 24.0 to 26.0% chromium against 19.0 to 22.0% nickel. Its oxide scale stays adherent at red heat, so stainless steel 310 pipes suit furnaces.
View SS 310 Pipe
04
SS 316 Pipe
Marine-grade stainless steel (Grade 316) contains 2.00–3.00% molybdenum. This specific addition vastly improves chloride pitting resistance over 304 in marine, chemical, and process piping applications.
View SS 316 Pipe
05
SS 316L Pipe
316L combines molybdenum with a 0.035% maximum carbon limit. Stainless steel 316L pipes are widely specified for welded processes, pharmaceutical, food and water systems.
View SS 316L PipeTitanium stabilises 316Ti against carbide precipitation. It is used in process piping exposed to elevated temperatures where stabilised austenitic stainless steel is required.
View SS 316Ti Pipe
07
SS 321 Pipe
UNS S32100 is titanium-stabilised 18Cr-9Ni stainless steel. It is used for elevated-temperature refinery and process piping where resistance to intergranular corrosion after heating is required.
View SS 321 Pipe
08
SS 321H Pipe
321H has a controlled carbon range of 0.04–0.10% and is intended for applications where higher-temperature creep and stress-rupture properties are important.
View SS 321H Pipe
09
SS 347 Pipe
Grade 347 uses niobium stabilisation and is suitable for process piping exposed to temperatures that can cause sensitisation in unstabilised grades.
View SS 347 Pipe
10
SS 347H Pipe
347H has a higher carbon range than standard 347 and is intended for elevated-temperature service requiring improved creep and stress-rupture properties.
View SS 347H Pipe
11
SS 904L Pipe
UNS N08904 contains 4.0–5.0% molybdenum and 1.00–2.00% copper. Stainless steel 904L pipe is selected for demanding sulphuric acid and other aggressive chemical environments.
View SS 904L PipeStainless Steel Pipe Forms and Types
Our stainless steel pipe supplier range includes seamless and welded (ERW) construction, along with round, square and rectangular profiles.
01
Stainless Steel Seamless Pipes
Stainless steel seamless pipe is manufactured from a solid billet without a longitudinal weld. It is selected for pressure, temperature and critical process applications where seamless construction is specified.
02
Welded Stainless Steel Pipes (ERW)
Stainless steel welded pipe, including ERW types, is formed from strip and joined along a longitudinal seam without filler metal, as required by ASTM A312.
03
Stainless Steel Round Pipes
Stainless steel round pipe is dimensioned by nominal bore, outside diameter and schedule under ASME B36.19M. It is the standard profile for process and pressure piping.
Square
04
Stainless Steel Square Pipes
SS Square pipe is formed into a four-sided section and supplied to specified outside dimensions and wall thicknesses. It is used for frames, supports and fabrication.
Rectangular
05
Stainless Steel Rectangular Pipes
SS Rectangular pipe provides different section widths and is used where the geometry needs greater stiffness in one direction, including frames and structural fabrication.
SS Pipe Size
Our range of stainless pipes covers 1/8" to 10" NB in five schedules. The following stainless steel pipe size chart shows nominal bore, outside diameter and wall thickness. These stainless steel pipe dimensions allow buyers to match nominal size with the required schedule and wall.
| NB | Inch | OD mm | SCH 5S | SCH 10S | SCH 20S | SCH 40S | SCH 80S |
|---|---|---|---|---|---|---|---|
| 6 | 1/8 | 10.3 | - | 1.24 | 1.50 | 1.73 | 2.41 |
| 8 | 1/4 | 13.7 | - | 1.65 | 2.00 | 2.24 | 3.02 |
| 10 | 3/8 | 17.1 | - | 1.65 | 2.00 | 2.31 | 3.20 |
| 15 | 1/2 | 21.34 | 1.65 | 2.11 | 2.30 | 2.77 | 3.75 |
| 20 | 3/4 | 26.7 | 1.65 | 2.11 | 2.55 | 2.87 | 3.91 |
| 25 | 1 | 33.4 | 1.65 | 2.77 | 3.00 | 3.38 | 4.55 |
| 32 | 1 1/4 | 42.2 | 1.65 | 2.77 | 3.00 | 3.56 | 4.85 |
| 40 | 1 1/2 | 48.3 | 1.65 | 2.77 | 3.00 | 3.68 | 5.08 |
| 50 | 2 | 60.3 | 1.65 | 2.77 | 3.00 | 3.91 | 5.54 |
| 65 | 2 1/2 | 73.0 | 2.11 | 3.05 | 4.00 | 5.16 | 7.01 |
| 80 | 3 | 88.9 | 2.11 | 3.05 | 4.00 | 5.49 | 7.62 |
| 100 | 4 | 114.3 | 2.11 | 3.05 | 4.50 | 6.02 | 8.56 |
| 125 | 5 | 141.3 | 2.77 | 3.40 | 5.00 | 6.55 | 9.53 |
| 150 | 6 | 168.3 | 2.77 | 3.40 | 6.35 | 7.11 | 10.97 |
| 200 | 8 | 219.1 | 2.77 | 3.76 | 6.35 | 8.18 | 12.70 |
| 250 | 10 | 273.1 | 3.40 | 4.19 | 6.35 | 9.27 | 12.70 |
Stainless Steel Pipe Weight Chart
This pipe weight chart provides the approximate mass per meter for standard stainless steel pipes.
| Nominal Bore (mm) | Inch | Sch-5S Weight (kg/m) | Sch-10S Weight (kg/m) | Sch-20S Weight (kg/m) | Sch-40S Weight (kg/m) | Sch-80S Weight (kg/m) |
|---|---|---|---|---|---|---|
| 6 | 1/8 | - | 0.28 | 0.33 | 0.37 | 0.47 |
| 8 | 1/4 | - | 0.49 | 0.58 | 0.631 | 0.80 |
| 10 | 3/8 | - | 0.63 | 0.74 | 0.845 | 1.10 |
| 15 | 1/2 | 0.80 | 1.00 | 1.08 | 1.27 | 1.62 |
| 20 | 3/4 | 1.03 | 1.28 | 1.52 | 1.68 | 2.20 |
| 25 | 1 | 1.30 | 2.09 | 1.94 | 2.50 | 3.24 |
| 32 | 1 1/4 | 1.65 | 2.70 | 2.90 | 3.38 | 4.47 |
| 40 | 1 1/2 | 1.91 | 3.11 | 3.35 | 4.05 | 5.41 |
| 50 | 2 | 2.40 | 3.93 | 4.24 | 5.44 | 7.48 |
| 65 | 2 1/2 | 3.69 | 5.26 | 6.81 | 8.63 | 11.40 |
| 80 | 3 | 4.51 | 6.45 | 8.37 | 11.30 | 15.20 |
| 100 | 4 | 5.84 | 8.36 | 12.18 | 16.07 | 22.30 |
| 125 | 5 | 9.47 | 11.57 | 16.81 | 21.80 | 31.97 |
| 150 | 6 | 11.32 | 13.84 | 25.36 | 28.30 | 42.70 |
| 200 | 8 | 14.79 | 19.96 | 33.31 | 42.60 | 64.60 |
| 250 | 10 | 22.63 | 27.78 | 41.77 | 60.50 | 96.00 |
Industrial Applications of Stainless Steel Pipe
Industrial stainless steel pipe is used across sugar, chemical, food, pharmaceutical, power and water-treatment sectors.
Sugar and Distillery Plants
304 and 316 pipes are used for juice heaters, evaporator systems and molasses transfer lines where corrosion, temperature and cleaning requirements must be considered.
Chemical and Petrochemical Processing
316, 316Ti and 904L are selected for reactor headers, dosing lines and other process services according to the chemical medium and operating temperature.
Pharmaceutical and Food Processing
316L pipe is widely used for purified water, clean steam and hygienic process lines. Pickled and passivated surfaces support cleaning and sanitation requirements. Where appearance and hygiene specifications require it, polished stainless steel pipe may also be specified.
Power Generation and Boiler Plant
321H and 347H are used for elevated-temperature steam and boiler piping where creep and stress-rupture properties are important.
Water Treatment and Plumbing Lines
Stainless steel water pipes are used in treatment plants, utility lines and building services where corrosion resistance, cleanliness and service life are required.
SS Pipe Theoretical Bursting Pressure
This table provides standard pipe dimensions, schedules, burst pressures, and collapse ratings for quick reference.
| Nominal Bore (mm) | Inch | Sch | OD (mm) | OD (in) | WT (mm) | WT (in) | ID (mm) | ID (in) | Bursting Pressure (psi) |
|---|---|---|---|---|---|---|---|---|---|
| 6 | 1/8 | 5S | 10.30 | 0.406 | 1.24 | 0.049 | 7.82 | 0.308 | 18058 |
| 10S | 10.30 | 0.406 | 1.24 | 0.049 | 7.82 | 0.308 | 18058 | ||
| 20S | 10.30 | 0.406 | 1.50 | 0.059 | 7.30 | 0.287 | 21845 | ||
| 40S | 10.30 | 0.406 | 1.73 | 0.068 | 6.84 | 0.269 | 25194 | ||
| 80S | 10.30 | 0.406 | 2.41 | 0.095 | 5.48 | 0.216 | 35097 | ||
| 8 | 1/4 | 5S | 13.70 | 0.539 | 1.24 | 0.049 | 11.22 | 0.442 | 13577 |
| 10S | 13.70 | 0.539 | 1.65 | 0.065 | 10.40 | 0.409 | 18066 | ||
| 20S | 13.70 | 0.539 | 2.00 | 0.079 | 9.70 | 0.382 | 21898 | ||
| 40S | 13.70 | 0.539 | 2.24 | 0.088 | 9.22 | 0.363 | 24526 | ||
| 80S | 13.70 | 0.539 | 3.02 | 0.119 | 7.66 | 0.302 | 33066 | ||
| 10 | 3/8 | 5S | 17.10 | 0.673 | 1.24 | 0.049 | 14.62 | 0.576 | 10877 |
| 10S | 17.10 | 0.673 | 1.65 | 0.065 | 13.80 | 0.543 | 14474 | ||
| 20S | 17.10 | 0.673 | 2.00 | 0.079 | 13.10 | 0.516 | 17544 | ||
| 40S | 17.10 | 0.673 | 2.31 | 0.091 | 12.48 | 0.491 | 20263 | ||
| 80S | 17.10 | 0.673 | 3.20 | 0.126 | 10.70 | 0.421 | 28070 | ||
| 15 | 1/2 | 5S | 21.34 | 0.840 | 1.65 | 0.065 | 18.04 | 0.710 | 11598 |
| 10S | 21.34 | 0.840 | 2.11 | 0.083 | 17.12 | 0.674 | 14831 | ||
| 20S | 21.34 | 0.840 | 2.30 | 0.091 | 16.74 | 0.659 | 16167 | ||
| 40S | 21.34 | 0.840 | 2.77 | 0.109 | 15.80 | 0.622 | 19470 | ||
| 80S | 21.34 | 0.840 | 3.75 | 0.148 | 13.84 | 0.545 | 26359 | ||
| 20 | 3/4 | 5S | 26.70 | 1.051 | 1.65 | 0.065 | 23.40 | 0.921 | 9270 |
| 10S | 26.70 | 1.051 | 2.11 | 0.083 | 22.48 | 0.885 | 11854 | ||
| 20S | 26.70 | 1.051 | 2.55 | 0.100 | 21.60 | 0.850 | 14326 | ||
| 40S | 26.70 | 1.051 | 2.87 | 0.113 | 20.96 | 0.825 | 16124 | ||
| 80S | 26.70 | 1.051 | 3.91 | 0.154 | 18.88 | 0.743 | 21966 | ||
| 25 | 1 | 5S | 33.40 | 1.315 | 1.65 | 0.065 | 30.10 | 1.185 | 7410 |
| 10S | 33.40 | 1.315 | 2.77 | 0.109 | 27.86 | 1.097 | 12440 | ||
| 20S | 33.40 | 1.315 | 3.00 | 0.118 | 27.40 | 1.079 | 13473 | ||
| 40S | 33.40 | 1.315 | 3.38 | 0.133 | 26.64 | 1.049 | 15180 | ||
| 80S | 33.40 | 1.315 | 4.55 | 0.179 | 24.30 | 0.957 | 20434 | ||
| 32 | 1 1/4 | 5S | 42.20 | 1.661 | 1.65 | 0.065 | 38.90 | 1.531 | 5865 |
| 10S | 42.20 | 1.661 | 2.77 | 0.109 | 36.66 | 1.443 | 9846 | ||
| 20S | 42.20 | 1.661 | 3.00 | 0.118 | 36.20 | 1.425 | 10664 | ||
| 40S | 42.20 | 1.661 | 3.56 | 0.140 | 35.08 | 1.381 | 12654 | ||
| 80S | 42.20 | 1.661 | 4.85 | 0.191 | 32.50 | 1.280 | 17239 | ||
| 40 | 1 1/2 | 5S | 48.30 | 1.902 | 1.65 | 0.065 | 45.00 | 1.772 | 5124 |
| 10S | 48.30 | 1.902 | 2.77 | 0.109 | 42.76 | 1.683 | 8602 | ||
| 20S | 48.30 | 1.902 | 3.00 | 0.118 | 42.30 | 1.665 | 9317 | ||
| 40S | 48.30 | 1.902 | 3.68 | 0.145 | 40.94 | 1.612 | 11429 | ||
| 80S | 48.30 | 1.902 | 5.08 | 0.200 | 38.14 | 1.502 | 15776 | ||
| 50 | 2 | 5S | 60.30 | 2.374 | 1.65 | 0.065 | 57.00 | 2.244 | 4104 |
| 10S | 60.30 | 2.374 | 2.77 | 0.109 | 54.76 | 2.156 | 6891 | ||
| 20S | 60.30 | 2.374 | 3.00 | 0.118 | 54.30 | 2.138 | 7463 | ||
| 40S | 60.30 | 2.374 | 3.91 | 0.154 | 52.48 | 2.066 | 9726 | ||
| 80S | 60.30 | 2.374 | 5.54 | 0.218 | 49.22 | 1.938 | 13781 | ||
| 65 | 2 1/2 | 5S | 73.00 | 2.874 | 2.11 | 0.083 | 68.78 | 2.708 | 4336 |
| 10S | 73.00 | 2.874 | 3.05 | 0.120 | 66.90 | 2.634 | 6267 | ||
| 20S | 73.00 | 2.874 | 4.00 | 0.157 | 65.00 | 2.559 | 8219 | ||
| 40S | 73.00 | 2.874 | 5.16 | 0.203 | 62.68 | 2.468 | 10603 | ||
| 80S | 73.00 | 2.874 | 7.01 | 0.276 | 58.98 | 2.322 | 14404 | ||
| 80 | 3 | 5S | 88.90 | 3.500 | 2.11 | 0.083 | 84.68 | 3.334 | 3560 |
| 10S | 88.90 | 3.500 | 3.05 | 0.120 | 82.80 | 3.260 | 5146 | ||
| 20S | 88.90 | 3.500 | 4.00 | 0.157 | 80.90 | 3.185 | 6749 | ||
| 40S | 88.90 | 3.500 | 5.49 | 0.216 | 77.92 | 3.068 | 9263 | ||
| 80S | 88.90 | 3.500 | 8.56 | 0.337 | 71.78 | 2.826 | 14443 | ||
| 100 | 4 | 5S | 114.30 | 4.500 | 2.11 | 0.083 | 110.08 | 4.334 | 2769 |
| 10S | 114.30 | 4.500 | 3.05 | 0.120 | 108.20 | 4.260 | 4003 | ||
| 20S | 114.30 | 4.500 | 4.50 | 0.177 | 105.30 | 4.146 | 5906 | ||
| 40S | 114.30 | 4.500 | 6.02 | 0.237 | 102.26 | 4.026 | 7900 | ||
| 80S | 114.30 | 4.500 | 8.56 | 0.337 | 97.18 | 3.826 | 11234 | ||
| 125 | 5 | 5S | 141.30 | 5.563 | 2.77 | 0.109 | 135.76 | 5.345 | 2941 |
| 10S | 141.30 | 5.563 | 3.40 | 0.134 | 134.50 | 5.295 | 3609 | ||
| 20S | 141.30 | 5.563 | 5.00 | 0.197 | 131.30 | 5.169 | 5308 | ||
| 40S | 141.30 | 5.563 | 6.55 | 0.258 | 128.20 | 5.047 | 6953 | ||
| 80S | 141.30 | 5.563 | 9.53 | 0.375 | 122.24 | 4.813 | 10117 | ||
| 150 | 6 | 5S | 168.30 | 6.626 | 2.77 | 0.109 | 162.76 | 6.408 | 2469 |
| 10S | 168.30 | 6.626 | 3.40 | 0.134 | 161.50 | 6.358 | 3030 | ||
| 20S | 168.30 | 6.626 | 6.35 | 0.250 | 155.60 | 6.126 | 5660 | ||
| 40S | 168.30 | 6.626 | 7.11 | 0.280 | 154.08 | 6.066 | 6337 | ||
| 80S | 168.30 | 6.626 | 10.97 | 0.432 | 146.36 | 5.762 | 9777 | ||
| 200 | 8 | 5S | 219.10 | 8.626 | 2.77 | 0.109 | 213.56 | 8.408 | 1896 |
| 10S | 219.10 | 8.626 | 3.76 | 0.148 | 211.58 | 8.330 | 2574 | ||
| 20S | 219.10 | 8.626 | 6.35 | 0.250 | 206.40 | 8.126 | 4347 | ||
| 40S | 219.10 | 8.626 | 8.18 | 0.322 | 202.74 | 7.982 | 5600 | ||
| 80S | 219.10 | 8.626 | 12.70 | 0.500 | 193.70 | 7.626 | 8695 | ||
| 250 | 10 | 5S | 273.10 | 10.752 | 3.40 | 0.134 | 266.30 | 10.484 | 1867 |
| 10S | 273.10 | 10.752 | 4.19 | 0.165 | 264.72 | 10.422 | 2301 | ||
| 20S | 273.10 | 10.752 | 6.35 | 0.250 | 260.40 | 10.252 | 3488 | ||
| 40S | 273.10 | 10.752 | 9.27 | 0.365 | 254.56 | 10.022 | 5092 | ||
| 80S | 273.10 | 10.752 | 12.70 | 0.500 | 247.70 | 9.752 | 6975 |
Basis: Barlow's formula, P = 2 × S × t / OD, with S = 75,000 psi (ASTM A312 minimum tensile strength for austenitic stainless).
Heat Treatment for Stainless Steel Pipe
For optimal durability, stainless steel pipes undergo solution annealing per SA-312. Standard grades require a minimum heating temperature of 1040°C. Specialised grades like 321H and 347H demand at least 1100°C for cold-finished, or 1050°C for hot-finished pipes. Additionally, the 904L grade requires a minimum of 1100°C. Finally, to preserve the structural integrity and prevent carbide precipitation, all heating processes must be followed immediately by quenching or rapid cooling.
Stainless Steel Pipe Shipping and Packaging
Our stainless steel pipes are bundled, marked, certified, and packaged securely to ensure reliable road and export delivery.
- Pipes are bundled by grade, bore and schedule and protected for transport.
- Plastic end caps and PVC sleeving are supplied where specified.
- EN 10204 3.1 certificates accompany each applicable consignment.
- Export shipments to Vietnam, Brazil, Europe, and Turkey are arranged on FOB or CFR terms.
Why Choose MLTI Private Limited?
Buyers return to Moonlight Tubes for certified material, approved grades and stock that ships on schedule. Every order is backed by documented quality, a wide size range and delivery commitments we hold to.
Quality Certification
01
IBR & EIL Approved
02
Why
Choose Us
03
Wide Range of Grades & Sizes
04
Timely Global Delivery
Stainless Steel Pipes FAQs
Grade 304 suits general-purpose, non-aggressive industrial environments. Grade 316 contains 2% to 3% molybdenum, providing superior resistance to chloride pitting, marine environments, and chemical attack, making it preferred for coastal and severe chemical process piping.
Seamless pipes are made from a solid billet with no welding at any stage of production, offering higher pressure ratings and structural integrity for critical lines. Welded pipes are roll-formed from strip and longitudinally welded, delivering larger diameter availability and greater cost efficiency.
Stainless steel pipe sizes are available from 1/8" NB to 10" NB across Schedules 10S, 20S, 40S and 80S, with Schedule 5S available from 1/2" NB upwards. Custom cut lengths are supplied against customer drawings. Diameters and wall thicknesses outside this range can be quoted on request, subject to confirmation.
Yes. Stainless steel grades like 304 and 316 are ideal for potable water and municipal plumbing lines. Their passive chromium-oxide layer resists internal scaling and corrosion, provides a smooth surface that limits biofilm formation, and avoids the heavy-metal contamination associated with lead or galvanised plumbing.
Yes, we export stainless steel pipes globally on agreed FOB or CFR terms, frequently serving markets across Vietnam, Brazil, Europe, and Turkey. All consignments are packed in seaworthy export packaging and shipped with complete EN 10204 3.1 test certificates and inspection documentation.
ASTM A312 / ASME SA-312 governs seamless, straight-seam welded, and heavily cold-worked austenitic stainless steel pipe. Outside diameters, nominal wall thicknesses and plain-end weights follow ASME B36.19M, while permissible wall thickness variations are given in ASTM A312.
Yes. Cutting stainless steel pipe is available to the required cut length according to customer drawings.