Stainless Steel 316L Large Diameter Pipe Specifications
These specifications cover the sizes, wall thicknesses, manufacturing methods, and standards for SS 316L large diameter pipes, which are commonly used in corrosive and high-temperature areas like chemical plants, marine systems and offshore projects.
| Specification | Details |
|---|---|
| Standard | ASTM A312 / ASME SA-312, ASTM A358 / ASME SA-358, ASTM A409 |
| Pipe Size (NB) | 1/2” to 24” NB (Seamless/Welded); 6” to 100” NB (EFW per ASTM A358/A409) |
| OD Range | A312: up to 24” NB (610 mm OD) A358/A409: up to ~100” NB (2540 mm OD) |
| Wall Thickness | 1 mm to 50 mm (depending on diameter and process) |
| Schedules | SCH 5S, 10S, 40S, 80S, STD, XS, SCH 60, 80, 120, 140, 160, XXS |
| Length | Single Random (5–7 m), Double Random (10–12 m), Custom Cut Length |
| End Finish | Plain End, Bevelled End |
| Forms | Round (standard), also available as fabricated large diameter sections |
| Manufacturing Method | Seamless (≤24”), ERW, EFW (ASTM A358), Fabricated/rolled & welded (ASTM A409) |
| Dimensions Standard | ASME B36.19M |
Stainless Steel 316L Large Diameter Pipe Sizes
SS 316L large diameter pipes are normally stocked in sizes from 10" NB to 24" NB. For sizes above 24" NB, EFW pipes are made for specific projects. The pipe dimensions follow ASME B36.19M for schedule 40 and other standard schedules for 316 stainless steel pipes.
Schedule and Wall Thickness Chart
Standard nominal pipe sizes and outside diameters for 316L large diameter pipes are listed below.
| Nominal Pipe Size (NB) | Outside Diameter (OD) | Common Schedules |
|---|---|---|
| 10" | 273.1 mm (10.750") | 5s, 10s, 10, 20, 30, 40, 80 |
| 12" | 323.9 mm (12.750") | 5s, 10s, 10, 20, 30, 40, 80 |
| 14" | 355.6 mm (14.000") | 5s, 10s, 10, 20, 30, 40, 80 |
| 16" | 406.4 mm (16.000") | 5s, 10s, 10, 20, 30, 40, 80 |
| 18" | 457.2 mm (18.000") | 5s, 10s, 10, 20, 30, 40 |
| 20" | 508.0 mm (20.000") | 5s, 10s, 10, 20, 30, 40 |
| 24" | 609.6 mm (24.000") | 5s, 10s, 10, 20, 30, 40 |
Lengths include single random (5 to 7 m), double random (10 to 12 m), and cut-to-length. End finishes: plain end and bevelled end.
Custom and Non-Standard Diameters
EFW pipes as per ASTM A358 can be made in sizes above 24" NB for specific projects. Custom-rolled and plate-fabricated pipes are used when non-standard outside diameters are required.
Stainless Steel 316L Large Diameter Pipe Price
SS 316L large diameter pipes usually cost ₹220-₹350 per kg in India and $3-$8 per kg internationally. The exact price depends on the pipe’s outside diameter (OD), wall thickness, schedule, order quantity, surface finish and technical specification. Sizes 14" NB and above are typically 15-30% costlier because fewer mills produce them. For the latest prices, reach out to us at Sachiya Steel International.
Chemical Composition of Stainless Steel 316L Large Diameter Pipes
The chemical composition of Stainless Steel 316L Large Diameter Pipes (UNS S31603) gives it strong corrosion resistance, easy weldability and good strength.
Mechanical Properties of Stainless Steel 316L Large Diameter Pipes
The mechanical properties of Stainless Steel 316L give it strength, flexibility and reliability, so large pipes perform well under pressure, temperature changes and corrosion.
| Property | Value | Unit |
|---|---|---|
| Tensile Strength (min) | 485 (70) | MPa (ksi) |
| Yield Strength (min) | 170 (25) | MPa (ksi) |
| Elongation (min) | 35 | % |
Stainless Steel 316L Large Diameter Pipes Equivalent Material Designations
Stainless Steel 316L is recognised by many international standards, making it easy to match materials, ensure compatibility, and buy the right grade for large diameter pipes worldwide.
| Standard | Designation |
|---|---|
| USA | UNS S31603 |
| Europe (EN/DIN) | X2CrNiMo17-12-2 / 1.4404 |
| Japan (JIS) | SUS 316L |
| China (GB) | 022Cr17Ni12Mo2 |
| France (AFNOR) | Z2CND17-12 |
| Russia (GOST) | 03X17H14M2 |
Industrial Applications of Stainless Steel 316L Large Diameter Pipes
316L large-diameter stainless steel pipes serve 4 primary sectors requiring corrosion-resistant large-bore piping.
Oil & Gas
316L large diameter pipes handle seawater cooling, process fluid transfer and offshore platform piping where chloride exposure is constant.
Chemical Processing
Chemical plants use 316L large bore pipes for sulphuric, phosphoric and acetic acid transfer. Low carbon supports welded installations in corrosive loops.
Water and Wastewater Treatment
Municipal facilities rely on 316L large diameter pipes for intake and discharge lines, where chloride attack from treated water is a concern.
Food and Pharmaceutical
316L pipes serve as sanitary process lines in dairy, beverage and pharmaceutical plants where smooth finishes and corrosion resistance are required.
Stainless Steel 316L vs SS 316 Large Diameter Pipes
Both SS 316 and 316L are marine-grade stainless steels with molybdenum for better resistance to pitting, but 316L (the low-carbon version) is the preferred choice for large-diameter welded pipes because it keeps the weld areas strong and reliable.
| Feature | Stainless Steel 316 | Stainless Steel 316L |
|---|---|---|
| Carbon Content | Standard | Low |
| Pitting Resistance (PREN) | Approx. 23–25 | Approx. 23–25 |
| Weldability | Good, but susceptible to sensitisation. | Excellent; no sensitisation risk. |
| Post-Weld Heat Treatment | Often required for heavy sections. | Not required (remains corrosion-resistant). |
| Tensile Strength | Higher | Slightly Lower |
| Yield Strength | Higher | Slightly Lower |
| Best For | High-strength mechanical parts. | Large-scale welded piping / Corrosive environments. |
Shipping & Packaging
Heavy-duty wooden boxes Packing
We strictly follow seaworthy export handling standards to protect 316L large diameter pipe from transit damage, moisture ingress, and surface contamination during long-distance dispatch.
- Heavy-duty wooden boxes with moisture barrier lining
- HDPE stretch film wrapping on all bundles
- Plastic end caps on threaded and plain-end pipes
- Silica gel desiccants to minimize moisture exposure
- ISPM-15 fumigated wooden packaging for export
Pipe Bundle Yard Staging
Container End-Cap Protection
Wrapped Export-Ready Bundles
We Export Worldwide
Sachiya Steel International supplies stainless steel products to major industrial markets across North America, Europe, the Middle East, Asia and Africa with export-ready documentation and logistics support.
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