- Standards: ASTM A790, ASME SA790, ASTM A928, ASTM A789, EN 10216-5, EN 10217-7
- Common Grades: UNS S31803, UNS S32205, UNS S32750, UNS S32760
- Pipe Type: Seamless, ERW, Welded, Submerged Arc Welded
- Tube Type: Seamless Heat Exchanger Tube, Condenser Tube, Bright Annealed Tube, U-Bend Tube
- Tube Size: OD 6.35mm to 101.6mm • WT 0.5mm to 12.7mm • per ASTM A789
- Pipe Size Range: 1/8" to 24" NPS
- Wall Thickness: SCH 5S to SCH 160, as per ASME B36.19
- Length: Single Random, Double Random, Fixed Cut Lengths
- Microstructure: 50% Austenite + 50% Ferrite
- Max Operating Temp: -50°C to 300°C
- PREN Value: ≥35 (Standard) • ≥40 (Super Duplex)
- End Finish: Plain End, Bevelled End, Threaded & Coupled
- Surface Condition: Pickled & Passivated, Annealed, Shot Blasted
- MTC: EN 10204 3.1 / 3.2 with Third-Party Inspection
- Registration: VAT No: 312456767500003 | Al Khobar, Saudi Arabia
Connect Directly with Duplex Steel Pipe Suppliers in Saudi Arabia
Find Mill-Direct ASTM A789 Duplex 2205 Tube Suppliers in Saudi Arabia in Seamless and Welded form With No Trader Markups
pipingmaterial.sa Connects Project Engineers Directly With Trusted Mill Direct Duplex Steel Pipe Suppliers In Saudi Arabia With No Trader Markups, No Hidden Commissions. Access ready ex-stock of duplex 2205 pipe and duplex 2205 tube in all grades including ASTM A790 UNS S31803, ASTM A790 UNS S32205, ASTM A789 UNS S31803, and ASTM A789 UNS S32205 in seamless and welded form with complete 3.2 MTC Not Promised Later, PREN reports, and same-week dispatch from Jubail, Dammam, and Jeddah. Send one inquiry and receive multiple competitive quotes from Aramco-approved sources within 24 hours
pipingmaterial.sa is a B2B platform backed by 26 years of experience in steel and metal supply to oil & gas, petrochemical, and industrial sectors across the Middle East and South Africa.We have built a direct network of actual stockists, manufacturers, and suppliers of duplex steel pipe so when you send an inquiry, we connect you with who actually holds the stock, not a middleman. No login, no commission, no hidden cost. Get multiple quotes with delivery estimates from top duplex tube suppliers in saudi arabia including ADNOC and SABIC approved sources, all in one inquiry. Contact duplex steel pipe suppliers directly by email, phone, or WhatsApp. Every product page carries accurate, verified specifications so you always know what you are buying
- Duplex Pipe Specification
- Types of Duplex Stainless Steel Pipe and Tube
- DSS Pipe and Tube Grade
- Quick Selection Guide for Duplex Pipe and Tube Grade
- Genuine Duplex Pipe & Tube Manufacturers
- Chemical Composition of Seamless Duplex Steel Pipe
- Mechanical Properties of DSS Pipe
- Duplex Pipe Material Equivalent Grades
- What is PREN and Why It Matters for Duplex Steel Pipe?
- Duplex Tube vs Duplex Pipe
- Duplex 2205 Tube Size Chart
- Where Duplex 2205 Pipe Is Used in Saudi Arabia ?
- Duplex Stainless Steel Pipe Schedule Chart
- Duplex Steel Pipe Welding Procedure
- How to Order Duplex 2205 Pipe in Saudi Arabia ?
- Duplex Pipe Weight Calculator
- Specification Guide for Duplex Heat Exchanger Tube & Condenser Tube
- When to Use Duplex 2205 Welded Tube?
- Duplex Stainless Pipe Price Factors in Saudi Arabia
- Duplex 2205 Pipe Applications
- Seamless vs Welded Duplex Pipe
- Duplex Steel Pipes Corrosion Resistance in Sour Service
- Where Duplex Pipes Are Stocked in Saudi Arabia ?
- Frequently Asked Questions
Every Enquiry On pipingmaterial.sa Reaches Multiple Verified Duplex Steel Pipe Stockists in Saudi Arabia Simultaneously, Offer Complete Technical Support From Enquiry To Delivery.
- OD: 6mm to 610mm
- Wall: SCH 5S, 10S, 40S, 80S, 160
- Length: 6m, 12m, Customer Cut
- Tolerances per ASME B36.19M
- OD: 5.0 - 1219.2 mm
- Wall : 0.5 - 20mm
- Length:Upto 26 m
- Schedule: 5 to 80S
- OD: 6.35mm to 101.6mm
- WT: 0.5mm to 12.7mm
- Length: Up to 9000mm Fixed
- Tolerances per ASTM A789
- UNS S31803
- UNS S32205
- ASTM A790
- W.Nr. 1.4462
- Hydrostatic Test per ASTM A530
- Ferrite Number
- IGC Test per ASTM A262
- NACE MR0175 / ISO 15156 Compliant
- ASTM A790
- ASME SA790 • ASTM A928
- EN 10216-5 • EN 10217-7
- ASME B31.3 / B31.4 / B31.8
- Pickled & Passivated
- Solution Annealed
- Plain End • Bevelled End
- No Scale, No Rust, Marked per ASTM
- Standard: ASTM A789 UNS S31803 / S32205
- OD: 6.35mm to 101.6mm • WT: 0.5 to 12.7mm
- Pickled or Bright Annealed finish
- Eddy Current • IGC Test • Ferrite No.
- Standard: ASTM A789 UNS S31803 / S32205
- ERW • OD: 6.35mm to 101.6mm
- Cost-effective • Non-critical tube service
- Hydrostatic • Eddy Current Tested
Send One Inquiry Of ASTM A790 UNS S31803 and UNS S32205 Pipe and Get Multiple Quotes From Top 10 Stockists Of Duplex Tube in Dammam
Duplex Stainless Steel Pipe is Available in Several Forms and Construction Methods. Selecting The Correct Type Depends On The Process Fluid, Operating Pressure, and Code Requirement Of The Saudi Arabian Project.
- UNS S31803 • UNS S32205
- NPS ½" to 16" • SCH 5S to 160
- Mandatory for sour service & Aramco critical lines
- EN 10204 3.2 MTC • NACE MR0175
- UNS S31803 • UNS S32205 • UNS S32750
- OD up to 1219mm • SCH 5S to 80S
- RT / UT weld inspection per project spec
- Cost-effective for non-sour & structural service
- Standard circular cross-section DSS pipe
- OD 6mm to 610mm
- Pickled & passivated • Bevelled ends
- Used in process, offshore & desalination
- Low nickel • cost-effective DSS grade
- PREN ≥25 • moderate chloride service
- Structural, water & storage applications
- Not for sour service or Aramco critical lines
- Square hollow section DSS profile
- EN 1.4362 Square Tube - lean duplex grade
- Structural & architectural applications
- Pickled or bright annealed finish
- Rectangular hollow section DSS profile
- UNS S31803 • UNS S32205
- Structural framing & support frames
- Corrosion-resistant offshore structures
- UNS S31803 • UNS S32205 • UNS S32750
- OD 6.35mm to 101.6mm • WT 0.5 to 12.7mm
- Ordered by actual OD × WT - not NPS
- EN 10204 3.2 MTC • Ferrite number report
- UNS S31803 • UNS S32205
- Cost-effective for non-critical tube service
- Eddy current tested • Hydrostatic tested
- Structural & low-pressure instrumentation
- UNS S31803 • UNS S32205 • UNS S32750
- OD 15.88 to 38.1mm • WT 1.65 to 3.05mm
- Plain end or U-bend • per TEMA standard
- IGC test • Ferrite number • Eddy current
- UNS S31803 • UNS S32205
- OD 19.05 to 50.8mm • thin wall
- PREN ≥35 • Arabian Gulf seawater service
- Fixed tubesheet • plain end both sides
- UNS S31803 • UNS S32205
- Smooth bore - reduces biofouling in condensers
- BA finish: annealed in controlled atmosphere
- Specify BA explicitly in MR - default is pickled
- UNS S32304 • EN 1.4362 grade
- Square hollow section - structural & framing
- Pickled or bright annealed finish
- Corrosion-resistant offshore support structures
Need Duplex Steel Pipe Stock? Request Availability and Pricing Now
Get Ex-stock Of Seamless and Welded Duplex Stainless Steel Pipe Ready For Same-week Dispatch From Jubail, Dammam, and Jeddah. Share Your Required Grade, NPS, Schedule, and Quantity With Us At Contact@pipingmaterial.sa and Receive Ex-stock Confirmation With Full 3.1 / 3.2 Mill Test Certificates.
Check Stock & Get QuoteDSS Pipe and Tube Grade
Click a category above to view grades, specifications, and Saudi Arabia supply details.
Duplex Steel Pipe
Duplex 2205 Pipe - Seamless
Duplex 2205 Pipe - Welded
Duplex Tube
Duplex 2205 Heat Exchanger Tube
Duplex 2205 Condenser Tube
EN 1.4362 Square Tube
EN 1.4362 Duplex Square Hollow Section
EN 1.4362 Duplex Rectangular Hollow Section
Hyper Duplex Stainless Steel
Hyper Duplex Pipe - UNS S32707
Hyper Duplex Tube - UNS S33207
Quick Selection Guide for Duplex Pipe and Tube Grade
Selecting the wrong duplex grade is one of the most common and costly mistakes on Saudi Aramco and SABIC piping projects. This guide covers every grade available under ASTM A789, ASTM A790, and ASTM A928 and maps each to its correct service condition.
| Grade | Standard | Stock in KSA | PREN | Best For | Avoid When |
|---|---|---|---|---|---|
| Lean Duplex S32101 | ASTM A790 UNS S32101 | Indent | ≥26 | Structural, low-chloride water lines | Sour service, seawater, Aramco critical lines |
| Lean Duplex S31500 | ASTM A790 UNS S31500 | Indent | ≥28 | Pulp & paper, moderate chloride environments | H2S service, offshore subsea |
| EN 1.4362 - S32304 | ASTM A790 UNS S32304 | Indent | ≥25 | Square tube, rectangular sections | Any sour service or Aramco critical piping |
| Duplex 2205 - S31803 | ASTM A790 / A789 / A928 UNS S31803 | Ex-Stock Jubail | ≥34 | General oil & gas, SABIC petrochemical | Where S32205 is explicitly required by SAES |
| Duplex 2205 - S32205 | ASTM A790 / A789 UNS S32205 | Ex-Stock Dammam | ≥35 | Saudi Aramco SAES-L piping, sour service | Budget-sensitive non-critical lines where S31803 is accepted |
| Super Duplex 2507 - S32750 | ASTM A790 / A789 / A928 UNS S32750 | Ex-Stock / Indent | ≥41 | Seawater injection, subsea flowlines | Where 2205 PREN is sufficient - cost premium not justified |
| Zeron 100 - S32760 | ASTM A790 / A789 / A928 UNS S32760 | Indent | ≥40 | Aggressive seawater, offshore subsea | General process piping - excessive cost without benefit |
| Hyper Duplex Stainless Steel | UNS S32707 / S33207 | Mill Direct | ≥49 | Deep subsea, ultra-high-chloride | Any standard onshore service - cost prohibitive |
SAES-L-133 mandates PREN ≥40 for seawater service. For standard sour gas lines, ASTM A790 UNS S32205 with NACE MR0175 compliance is the most widely specified and stocked grade in Saudi Arabia.
Buy Sandvik and Alleima Make PREN confirmed ASTM A789 UNS S32205 Tube Ex.Stock With 3.2 MTC Not Promised Later
Genuine Duplex Pipe & Tube Manufacturers
Saudi Aramco, SABIC, and ADNOC vendor lists restrict duplex pipe and tube supply to mills with documented production capability and third-party audit history. pipingmaterial.sa maintains direct sourcing from these approved manufacturers - no traders, no re-rollers.
Sandvik AB
Alleima
Outokumpu
Tubacex
Nippon Steel
Sanyo Special Steel
Vallourec
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Discover Duplex Steel Pipe & Tube Suppliers in Dammam, Al Khobar, & Jubail
pipingmaterial.sa connects buyers directly with duplex steel pipe and duplex tube suppliers in Saudi Arabia, no agents, no hidden costs. Get direct access to Aramco-approved stockists with EN 10204 3.2 MTC, ferrite number reports, and NACE MR0175 compliance documentation.
Duplex Steel Pipe Suppliers In Dammam
Duplex Tube Suppliers In Jubail
Duplex Steel Pipe Supplier In Riyadh
Duplex Tube Stockist In Al Khobar
Duplex Steel Pipe Stockist In Yanbu
Duplex Tube Suppliers In Jeddah
Duplex stainless steel's dual austenitic-ferritic structure gives it superior strength and corrosion resistance essential for Saudi Arabia's oil, gas, and desalination industries.
| UNS | Cr (%) | Ni (%) | Mo (%) | N (%) | Mn (%) | C (% max) | PREN |
|---|---|---|---|---|---|---|---|
| S31803 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 | 2.0 max | 0.030 | ≥34 |
| S32205 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 | 2.0 max | 0.030 | ≥35 |
| S32101 | 21.0-22.0 | 1.35-1.70 | 0.10-0.80 | 0.20-0.25 | 4.0-6.0 | 0.040 | ≥26 |
| S32304 | 21.5-24.5 | 3.0-5.5 | 0.05-0.60 | 0.05-0.20 | 2.5 max | 0.030 | ≥25 |
PREN = %Cr + 3.3 × %Mo + 16 × %N. Higher PREN indicates superior resistance to chloride pitting corrosion in seawater and process media.
Duplex steel offers twice the yield strength of standard austenitic grades with good toughness and weldability ideal for pressure-rated piping in Aramco and SABIC facilities
Hardness: S32101 ≤290 HB • S31803 ≤293 HB • S32750 ≤310 HB • S32760 ≤310 HB • Charpy impact at -40°C: 27 J min (standard duplex) • 45 J min (super duplex)
Duplex pipe for Aramco and SABIC projects spans ASTM, EN, BS, JIS, and DIN standards. Use the chart below for quick grade matching and material substitution.
ASTM / ASME
- A790 / SA790
- A789 / SA789
- A276
- A240 / SA240
- A182 F51
EN / DIN
- EN 10216-5
- EN 10217-7
- 1.4462- X2CrNiMoN22-5-3
- 1.4362 - X2CrNiN23-4
- 1.4162 - X2CrMnNiN21-5-1
BS
- BS 3605
- BS 3606
- 318S13
- BS EN 10216-5
- BS EN 10217-7
JIS
- JIS G3463
- JIS G3459
- SUS329J3L
- SUS329J4L
- JIS G4303
IS
- IS 6913
- IS 6911
- Grade UNS S31803
- Grade UNS S32205
- IS 1570 Part 5
GB
- GB/T 21832
- GB/T 13296
- 022Cr22Ni5Mo3N
- 022Cr23Ni4MoCuN
- GB/T 20878
In Saudi Arabia's high-chloride oil, gas, and desalination environments, PREN is the key index Aramco engineers use to verify a duplex grade's resistance to pitting and crevice corrosion.
Formula: PREN = %Cr + 3.3 × %Mo + 16 × %N. A PREN below 25 is not suitable for seawater service in the Arabian Gulf.
Saudi Aramco’s piping material specification (SAES-L-133) mandates PREN ≥40 for seawater service and offshore subsea lines. Always verify the mill MTC PREN value before accepting supply.
Duplex Tube vs Duplex Pipe
Saudi buyers frequently write wrong MRs because tube and pipe look the same but are governed by completely different standards. Ordering the wrong one gets rejected at Aramco inspection. Here is exactly how they differ.
Aramco inspection rejects material supplied under the wrong standard - a tube ordered as pipe or vice versa fails dimensional checks at incoming inspection regardless of grade. Always verify standard, dimensioning basis, and MTC type before issuing MR.
Get Cut to Size PMI Tested Duplex 2205 Seamless Pipe Online For Heat Exchanger and Condenser
Duplex 2205 Tube Size Chart
Duplex 2205 tube like ASTM A789 UNS S31803 / UNS S32205 is ordered by actual OD and wall thickness, not by NPS or schedule. Use this reference chart when writing your MR or RFQ for heat exchanger tube, condenser tube, or instrumentation tubing for Saudi Aramco and SABIC projects.
All sizes per ASTM A789. Weight calculated for UNS S31803 / S32205 density 7.8 g/cm³. Tolerances: OD ±0.10mm, WT ±10%. Lengths up to 9000mm fixed or random. Specify OD × WT × Length × Finish (Pickled / BA) in your MR.
| OD (inch) | OD (mm) | WT (mm) | ID (mm) | BWG | Weight (kg/m) |
|---|---|---|---|---|---|
| ½" | 12.70 | 1.24 | 10.22 | 18 | 0.35 |
| ⅝" | 15.88 | 1.24 | 13.40 | 18 | 0.45 |
| ⅝" | 15.88 | 1.65 | 12.58 | 16 | 0.58 |
| ⅝" | 15.88 | 2.11 | 11.66 | 14 | 0.72 |
| ¾" | 19.05 | 1.24 | 16.57 | 18 | 0.55 |
| ¾" | 19.05 | 1.65 | 15.75 | 16 | 0.71 |
| ¾" | 19.05 | 2.11 | 14.83 | 14 | 0.89 |
| 1" | 25.40 | 1.24 | 22.92 | 18 | 0.75 |
| 1" | 25.40 | 1.65 | 22.10 | 16 | 0.98 |
| 1" | 25.40 | 2.11 | 21.18 | 14 | 1.24 |
| 1" | 25.40 | 2.77 | 19.86 | 12 | 1.58 |
| 1¼" | 31.75 | 1.65 | 28.45 | 16 | 1.24 |
| 1¼" | 31.75 | 2.11 | 27.53 | 14 | 1.57 |
| 1½" | 38.10 | 1.65 | 34.80 | 16 | 1.50 |
| 1½" | 38.10 | 2.11 | 33.88 | 14 | 1.90 |
| 1½" | 38.10 | 2.77 | 32.56 | 12 | 2.44 |
| 2" | 50.80 | 2.11 | 46.58 | 14 | 2.55 |
| 2" | 50.80 | 2.77 | 45.26 | 12 | 3.30 |
| 2" | 50.80 | 3.05 | 44.70 | 11 | 3.61 |
Most ordered duplex 2205 tube size in Saudi Arabia: OD 25.4mm × WT 2.11mm for shell and tube heat exchangers, and OD 19.05mm × WT 1.24mm for seawater condensers. Always specify finish - Pickled or Bright Annealed for condenser service.
ASTM A789 UNS S32205, Seamless, OD 25.4mm × WT 2.11mm, Length 6000mm Fixed, Pickled, EN 10204 3.2 MTC, Ferrite No. Report, IGC ASTM A262, Eddy Current
ASTM A789 UNS S32205, Seamless, OD 19.05mm × WT 1.24mm, Length 6096mm Fixed, Bright Annealed, PREN ≥35 confirmed, EN 10204 3.2 MTC, Ferrite No. Report
ASTM A789 UNS S31803, Seamless, OD 25.4mm × WT 2.77mm, U-Bend Min Radius 38mm, Pickled, EN 10204 3.2 MTC, Ferrite No. Report, IGC ASTM A262, per TEMA
pipingmaterial.sa stocks duplex 2205 seamless pipe in NPS ½" to 12" SCH 10S, 40S, and 80S ex-stock in Jubail and Dammam. For duplex 2205 welded pipe in larger diameters, submit your line list and we will confirm mill availability and lead time within 24 hours.
DSS pipe wall thickness follows ASME B36.19M. The chart below covers commonly stocked sizes available with pipingmaterial.sa in Saudi Arabia.
| Nominal Size | OD (mm) | SCH 5S | SCH 10S | SCH 10 | SCH 20 | SCH 30 | SCH 40S/STD | SCH 40 | SCH 60 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| - | - | WT | kg/m | WT | kg/m | WT | kg/m | WT | kg/m | WT | kg/m | WT | kg/m | WT | kg/m | WT | kg/m |
| 1/8" | 10.3 | - | - | 1.24 | 0.279 | - | - | - | - | - | - | 1.73 | 0.386 | - | - | - | - |
| 1/4" | 13.7 | - | - | 1.65 | 0.5 | - | - | - | - | - | - | 2.24 | 0.63 | 2.24 | 0.63 | - | - |
| 3/8" | 17.1 | - | - | 1.65 | 0.64 | - | - | - | - | - | - | 2.31 | 0.85 | 2.31 | 0.85 | - | - |
| 1/2" | 21.3 | 1.65 | 0.81 | 2.11 | 1.02 | - | - | - | - | - | - | 2.77 | 1.27 | 2.77 | 1.27 | - | - |
| 3/4" | 26.7 | 1.65 | 1.03 | 2.11 | 1.3 | - | - | - | - | - | - | 2.87 | 1.68 | 2.87 | 1.68 | - | - |
| 1" | 33.4 | 1.65 | 1.31 | 2.77 | 2.13 | - | - | - | - | - | - | 3.38 | 2.5 | 3.38 | 2.5 | - | - |
| 1 1/4" | 42.2 | 1.65 | 1.68 | 2.77 | 2.73 | - | - | - | - | - | - | 3.56 | 3.39 | 3.56 | 3.39 | - | - |
| 1 1/2" | 48.3 | 1.65 | 1.93 | 2.77 | 3.16 | - | - | - | - | - | - | 3.67 | 4.05 | 3.67 | 4.05 | - | - |
| 2" | 60.3 | 1.65 | 2.42 | 2.77 | 3.99 | - | - | - | - | - | - | 3.91 | 5.44 | 3.91 | 5.44 | - | - |
| 2 1/2" | 73 | 2.11 | 3.75 | 3.05 | 5.35 | - | - | - | - | - | - | 5.16 | 8.63 | 5.16 | 8.63 | - | - |
| 3" | 88.9 | 2.11 | 4.59 | 3.05 | 6.56 | - | - | - | - | - | - | 5.49 | 11.29 | 5.49 | 11.29 | - | - |
| 3 1/2" | 101.6 | 2.11 | 5.26 | 3.05 | 7.53 | - | - | - | - | - | - | 5.74 | 13.57 | 5.74 | 13.57 | - | - |
| 4" | 114.3 | 2.11 | 5.93 | 3.05 | 8.54 | - | - | - | - | - | - | 6.02 | 16.07 | 6.02 | 16.07 | - | - |
| 5" | 141.3 | 2.77 | 9.61 | 3.4 | 11.74 | - | - | - | - | - | - | 6.55 | 21.77 | 6.55 | 21.77 | - | - |
| 6" | 168.3 | 2.77 | 11.48 | 3.4 | 14.04 | - | - | - | - | - | - | 7.11 | 28.26 | 7.11 | 28.26 | - | - |
| 8" | 219.1 | 2.77 | 14.9 | 3.4 | 20.12 | - | - | 6.35 | 33.31 | 7.07 | 36.81 | 8.18 | 42.55 | 8.18 | 42.55 | 10.31 | 53.08 |
| 10" | 273 | 3.4 | 22.95 | 4.19 | 28.2 | - | - | 6.35 | 41.77 | 7.8 | 51.03 | 9.27 | 60.3 | 9.27 | 60.3 | 12.7 | 81.55 |
| 12" | 323.8 | 3.96 | 31.71 | 4.57 | 36.53 | - | - | 6.35 | 49.73 | 8.38 | 65.2 | 9.53 | 73.88 | 10.31 | 79.73 | 14.28 | 108.9 |
| 14" | 355.6 | 3.96 | 34.87 | 4.78 | 41.99 | 6.35 | 54.69 | 7.92 | 67.9 | 9.53 | 81.33 | 9.53 | 81.33 | 11.13 | 94.55 | 15.09 | 126.7 |
| 16" | 406.4 | 4.19 | 42.2 | 4.78 | 48.07 | 6.35 | 62.64 | 7.92 | 77.83 | 9.53 | 93.27 | 9.53 | 93.27 | 12.7 | 123.3 | 16.66 | 160.1 |
| 18" | 457.2 | 4.19 | 47.53 | 4.78 | 54.15 | 6.35 | 70.57 | 7.92 | 87.71 | 11.13 | 122.3 | 9.53 | 105.1 | 14.27 | 155.8 | 19.05 | 205.7 |
| 20" | 508 | 4.78 | 60.23 | 5.54 | 69.7 | 6.35 | 78.55 | 9.53 | 117.1 | 12.7 | 155.1 | 9.53 | 117.1 | 15.09 | 183.4 | 20.62 | 247.8 |
| 22" | 558.9 | 4.78 | 65.8 | 5.54 | 75.75 | 6.35 | 85.54 | 9.53 | 129.1 | 12.7 | 171 | 9.53 | 129.1 | - | - | 22.23 | 234.2 |
| 24" | 609.6 | 5.54 | 83.8 | 6.35 | 95.92 | 6.35 | 94.53 | 9.53 | 141.1 | 14.27 | 209.5 | 9.53 | 141.1 | 17.48 | 255.4 | 24.61 | 235.2 |
| 26" | 660.4 | - | - | - | - | 7.92 | 127.3 | 12.7 | 202.7 | - | - | 9.53 | 152.8 | - | - | - | - |
| 28" | 711.2 | - | - | - | - | 7.92 | 137.3 | 12.7 | 218.6 | 15.88 | 271.2 | 9.53 | 164.8 | - | - | - | - |
| 30" | 762 | 6.35 | 120.15 | 7.92 | 149.55 | 7.92 | 147.2 | 12.7 | 234.6 | 15.88 | 291.1 | 9.53 | 176.8 | - | - | - | - |
Wall thickness tolerance is -12.5% per ASTM A530. Custom lengths and non-standard sizes available on request from Saudi stockists.
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Welding duplex pipe requires tight control of heat input, interpass temperature, and post-weld treatment to maintain the 50/50 phase balance. Poor welding is the leading cause of DSS pipe failures in Saudi Arabia's process plants.
Welding Do's for DSS Pipe
- Follow qualified WPS (ASME IX or EN ISO 15614-1)
- Monitor interpass temp with contact pyrometer
- Always use overalloyed, high-Ni filler wire
- Add 2% N₂ to backing gas to retain nitrogen
- Run stringer beads only
- Verify ferrite number on test coupons
- Repair weld without PWHT if needed
Welding Dont's For Duplex SS Pipe
- Never exceed 150°C interpass
- Never use 308L or 316L filler on duplex
- Avoid heat input above 2.5 kJ/mm
- No conventional PWHT or stress relief annealing
- No carbon steel grinding wheels
- No direct flame preheating
- Never weld in rain or high humidity without enclosure
How to Order Duplex 2205 Pipe in Saudi Arabia ?
Duplex 2205 pipe is the most ordered DSS grade in Saudi Arabia - but wrong MRs, wrong grade callouts, and seamless vs welded mix-ups cause rejection at Aramco incoming inspection every week. This section covers exactly what Saudi project engineers need to specify correctly before raising an MR or RFQ.
When in doubt, order dual certified S31803/S32205 - it satisfies both old and new SAES piping class requirements and carries the same price as single-cert S32205 from approved mills.
Calculate duplex pipe weight per meter and total weight for duplex stainless steel pipe Select outside diameter, wall thickness, grade, and length below.
Formula: W = 0.02466 × WT × (OD - WT) × density_factor | Results are theoretical; actual weight may vary ±2% by mill tolerance.
Offer Quote in 24 Hours For Aramco and SABIC Approved Duplex Stainless Steel Pipe Which Ship Same Week, Refer Selection Guide
Specification Guide for Duplex Heat Exchanger Tube & Condenser Tube
Both duplex heat exchanger tube and duplex condenser tube fall under ASTM A789 - but service condition, finish, and end preparation differ. Wrong specification causes rejection at Aramco incoming inspection.
Duplex bright annealed tube finish is mandatory for seawater-cooled condensers in the Arabian Gulf - BA finish reduces biofouling and pitting initiation on the tube bore. Always specify finish type explicitly in your MR; suppliers default to pickled finish if not stated.
All duplex heat exchanger tube and condenser tube supplied by pipingmaterial.sa comes with EN 10204 3.2 MTC, ferrite number report, IGC test certificate, and PREN confirmation from the mill. Send tube OD, WT, grade, bundle length, and quantity to contact@pipingmaterial.sa for competitive mill pricing within 24 hours.
Duplex 2205 welded tube is manufactured by ERW process from UNS S31803 or UNS S32205 strip. It carries a longitudinal weld seam and is not accepted for heat exchanger or condenser tube bundles on Saudi Aramco and SABIC projects because seamless is mandatory for pressure-retaining service. Welded tube is used for structural sections, low-pressure enclosures, and fabricated assemblies
Correct MR for Duplex 2205 Welded Tube: ASTM A789 UNS S31803, ERW Welded, OD 38.1mm × WT 1.65mm, Length 6000mm Fixed, Pickled & Passivated, EN 10204 3.1 MTC, Ferrite Number Report, Hydrostatic Test per ASTM A789. Do not use welded tube where seamless is specified - it will be rejected at Aramco ITP hold point.
Saudi Aramco Approved Duplex Steel Pipe Suppliers
- Sandvik Materials Technology, Sweden
- Alleima , Sweden
- Tubacex, Spain
- Valdunes / Arcelor Mittal, France
- Sumitomo Metal Industries, Japan
SABIC & Marafiq Approved Duplex Steel Pipe Suppliers
- Outokumpu, Finland
- Mannesmann Stainless Tubes, Germany
- Nippon Steel, Japan
- Tenaris, Italy
- Salzgitter Mannesmann, Germany
NEOM & Vision 2030 Projects
- Butting GmbH, Germany
- Plymouth Tube, USA
- Jiuli Special Materials, China
- Baosteel Stainless Steel, China
KSA Local Stockists
- Pipingmaterial.sa, Al Khobar
- Al Rajhi Steel, Dammam
- Saudi Steel Pipe Company, Jubail
- Gulf Steel Industries, Eastern Province
Six factors control duplex pipe pricing in Saudi Arabia. Miss any one and you risk overpaying by 20-30% or receiving material your project won't accept.
LME Price
- S32101 Lean Duplex - 30% below 2205
- S32205 - most cost-effective DSS grade
- Widely stocked across Jubail & Dammam
Grade
- S32750 (2507) - 60-120% premium over 2205
- S32760 (Zeron 100) - highest alloy cost
- Mill order likely; 8-16 week lead time
Accepted for structural use, low-pressure lines, and non-sour service. Correct specification = significant savings on large tonnage orders.
Type
Mandatory for sour service , high-pressure, and subsea lines. The 20-35% premium is non-negotiable for these service conditions.
- Asian mills - Korea, China, India
- Accepted on non-critical, non-Aramco services
- Always verify mill is on current approved list
Origin
- Sandvik, Alleima, Tubacex - Europe
- Mandatory on Aramco VAL critical services
- Confirm current vendor approval list (VAL)
Mill-issued test report. Standard for most commercial and industrial projects. Specify as default in your RFQ unless ITP states otherwise.
Type
Third-party inspector witness required by Aramco. PMI report adds further cost. Always declare in RFQ - late changes raise price significantly.
vs Mill
From Aramco's Uthmaniyah plant to SABIC Jubail, duplex pipe is the standard choice for chloride, sour gas (H₂S), and seawater injection lines.
Seamless Duplex Steel Pipe
- No weld seam
- Mandatory for sour service
- Required by Saudi Aramco for critical process lines
- Sizes: NPS ⅛″ to 16″
- Wall: SCH 5S to SCH 160 / XXS
- 20-35% costlier than welded
- First choice for subsea, wellhead & downhole use
Welded Duplex Pipe (ERW / SAW)
- Has a weld seam
- Cost-effective for low-pressure, non-sour lines
- Available up to 24″
- Weld inspected by RT or UT per project spec
- Manufactured to ASTM A928
- Ideal for structural, storage & utility service
- Accepted by SABIC & non-Aramco EPC contractors
Saudi Arabia's oil and gas environments combine H₂S, CO₂, chlorides, and hot seawater, conditions that destroy standard austenitic steel. Duplex pipe's dual-phase structure resists all four corrosion mechanisms.
Performance comparison of 2205, 2507, and 316L across the four key corrosion types found in Saudi Arabia's oil, gas, and water infrastructure
Under NACE MR0175 / ISO 15156: 2205 is qualified for sour service up to 60°C and 3 bar H₂S. 2507 covers up to 232°C in regions 1 and 2. Always confirm against the latest NACE MR0175 and Aramco SAES-L-133 for your project.
Duplex steel pipe in ASTM A790 UNS S31803, S32205 is stocked across Eastern Province and Jeddah warehouses ready for Aramco and EPC project dispatch.
Frequently Asked Questions
Authorised Duplex Pipe Dealers and Distributors in Saudi Arabia
- National Pipe Company - Al Jubail
- Al Ittefaq Steel Products Co. - Dammam
- Arabian Pipes Company - Al Khobar
- Gulf Piping Company - Al Jubail
- Saudi Steel Pipes Company - Jeddah
- Al Arrab Contracting Company - Riyadh
Where Our Duplex Steel Pipe Has Been Used?
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Get fast responses from genuine duplex steel pipe stockists in Saudi Arabia. Email your requirement - grade, NPS, schedule, quantity, and delivery city to contact@pipingmaterial.sa and receive competitive quotes with MTC 3.1/3.2 and ex-stock confirmation within 24 hours. direct mill-traced supply.
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