Super Duplex 2507 Pipe Specifications
The table below provides a summary of the essential technical specifications for pipe made from UNS S32750 super duplex.
| Property | Details |
|---|---|
| Standard | ASTM A790 / ASME SA-790 |
| OD Range (Seamless) | 1/2" (12.7 mm) to 8" (219.1 mm) |
| OD Range (Welded) | 6" (168.3 mm) to 24" (610 mm) |
| Wall Thickness | 0.5 mm to 20 mm |
| Schedules | 10S, 40S, 80S, 160, XXS |
| Length | Single Random, Double Random, Cut-to-Length |
Pipe Schedule and Wall Thickness
Explore the following table for pipe schedules and wall thickness for accurate industrial piping design.
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Schedule 10s Wall (mm) | Schedule 40s Wall (mm) | Schedule 80s Wall (mm) |
|---|---|---|---|---|
| 1/2" | 21.34 mm | 2.11 mm | 2.77 mm | 3.73 mm |
| 3/4" | 26.67 mm | 2.11 mm | 2.87 mm | 3.91 mm |
| 1" | 33.40 mm | 2.77 mm | 3.38 mm | 4.55 mm |
| 2" | 60.33 mm | 2.77 mm | 3.91 mm | 5.54 mm |
| 4" | 114.30 mm | 3.05 mm | 6.02 mm | 8.56 mm |
| 6" | 168.28 mm | 3.40 mm | 7.11 mm | 10.97 mm |
| 8" | 219.08 mm | 3.76 mm | 8.18 mm | 12.70 mm |
| 12" | 323.85 mm | 4.57 mm | 9.53 mm | 12.70 mm |
Dimensional Tolerances
Dimensional tolerances for UNS S32750 (Super Duplex 2507) pipes are normally determined by standards such as ASTM A790 for seamless/welded pipe and ASTM A789 for tubing.
| Parameter | Pipe Size (NPS) | Over Tolerance | Under Tolerance |
|---|---|---|---|
| Outside Diameter (OD) | 1/8" to 1-1/2" | +0.4 mm | -0.4 mm |
| Outside Diameter (OD) | Over 1-1/2" to 4" | +0.8 mm | -0.8 mm |
| Outside Diameter (OD) | Over 4" to 8" | +1.6 mm | -0.8 mm |
| Wall Thickness | All Sizes | +12.5% | -12.5% |
| Length (Cut-to-size) | Under 24 ft | +6.0 mm | -0.0 mm |
| Straightness | All Sizes | 1 in 400 (3 mm/m) | — |
Super Duplex 2507 Pipe Price
In India, the price of seamless Super Duplex 2507 pipe starts at about ₹500 per kilogram. International shipping is $6 to $15 per kilogram, depending on size and quantity. The total cost depends on OD, wall thickness, schedule, and raw material prices. Get in touch with us for a current quote.
Super Duplex 2507 Pipe Chemical Composition
The chemical composition of UNS S32750, as per ASTM A790 / ASME SA-790, is presented in the table below.
The primary barrier against pitting and crevice corrosion is composed of chromium and molybdenum, while nitrogen elevates the PREN above 42.5.
Super Duplex 2507 Pipe Mechanical Properties
The following table summarises the essential mechanical property requirements and performance benchmarks for UNS S32750 super duplex steel pipe.
| Property | Value |
|---|---|
| Tensile Strength (min) | 800 MPa (116 ksi) |
| Yield Strength, 0.2% Offset (min) | 550 MPa (80 ksi) |
| Elongation (min) | 15% |
| Hardness (max) | 32 HRC |
Super Duplex 2507 Equivalent Grades
The table below maps equivalent designations for 2507 super duplex pipe across international standards.
| Standard | Designation |
|---|---|
| UNS | UNS S32750 |
| EN / DIN | 1.4410 / X2CrNiMoN25-7-4 |
| Swedish Standard | SS 2328 |
| JIS (Japan) | SUS 327L1 |
| AFNOR (France) | Z3CND25-06Az. |
| GOST (Russia) | 03Х25Н7М4Ф |
Super Duplex 2507 Pipe Industrial Applications
The four most important industries that require high strength and resistance to chlorine corrosion are served by pipe made of alloy 2507.
Oil & Gas Industry
S32750 pipe is used in offshore platforms' subsea flowlines, topside piping, and manifold systems to protect them against corrosion by seawater.
Chemical Processing
Process piping in sulphuric acid, phosphoric acid, and chloride-bearing chemical plants uses 2507 pipe for aggressive media.
Marine & Desalination
Seawater intake lines, reverse osmosis frames, and heat exchangers in desalination plants specify this grade for high-chloride service.
Power Generation
Cooling water systems and flue gas scrubbers in power stations use 2507 pipe where chloride exposure meets high pressure.
Super Duplex 2507 vs Duplex 2205 Pipe
Super Duplex 2507 pipe outperforms Duplex 2205 in strength and corrosion resistance. Duplex 2205 suits moderate chloride environments at a lower cost. For aggressive offshore or high-chloride chemical service, 2507 is preferred.
| Property | Super Duplex 2507 (S32750) | Duplex 2205 (S32205) |
|---|---|---|
| Tensile Strength (min) | 800 MPa (116 ksi) | 655 MPa (95 ksi) |
| Yield Strength (min) | 550 MPa (80 ksi) | 450 MPa (65 ksi) |
| PREN | ≥ 42.5 | ~35 |
| Chromium | 24.0–26.0% | 22.0–23.0% |
Shipping & Packaging
Heavy-duty wooden boxes Packing
We strictly follow seaworthy export handling standards to protect super duplex 2507 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 super duplex steel products to major industrial markets across North America, Europe, the Middle East, Asia and Africa with export-ready documentation and logistics support.
USA
Canada
Germany
UK
Italy
France
Australia
South Korea
Indonesia
Vietnam
Singapore
Malaysia
Taiwan
UAE
Saudi Arabia
Qatar
Oman
South Africa
Nigeria
Egypt