Amardeep presents a diverse selection of UR52N Tubes renowned for their exceptional mechanical properties. Our product range encompasses various grades, including UR52N Duplex Tubes and Super Duplex Tubes. The duplex composition endows our Super Duplex Steel Welded Tubes with remarkable resistance to chloride stress corrosion cracking caused by inorganic acids. It is advisable to limit the use of Duplex Steel ERW Tubes to applications below 600 degrees Fahrenheit.
Prolonged exposure to elevated temperatures can diminish both the toughness and corrosion resistance of our
Super Duplex Steel square Tubes. Employing a lighter gauge of these Duplex Steel needle Tubes can achieve the
same design strength as a thicker nickel alloy, resulting in significant weight savings and a substantial
reduction in overall fabrication costs. These polished Tubes exhibit high resistance to uniform corrosion
induced by organic Plateids, such as acetic acid.
Amardeep stands as the largest exporter and stockholder of Duplex Steel mirror Tubes, which necessitate solution
annealing and quenching after hot or cold forming. Our product lineup includes various sizes of Duplex and Super
Duplex Stainless Steel rectangular Tubes. We offer Duplex Steel EFW Tubes and Duplex welded gas tubes in duplex
grades, reaching up to an impressive 4 inches in diameter and 20 feet in length. Additionally, Super Duplex
Polish welded round tubes are available with a bright polished finish.
| UR52N Duplex Tube Standards | ASTM A789, ASME SA789 |
| Duplex Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
| Duplex Welded Tube Size | 6.35 mm OD To 152 mm OD |
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Duplex tubing wall thickness | 0.020" –0.220", (special wall thicknesses available) |
| Duplex Steel tube Length | Single Random, Double Random, Standard & Cut length |
| Super Duplex Tube Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Duplex tube Form | Round, Coil, Square, Rectangular, Boiler, Hydraulic, Straight or ‘U’ bent Tubes, Hollow, LSAW Tubes Etc. |
| Duplex Tube Type | Seamless, ERW, EFW, Welded, Fabricated |
| Electropolished | (EP) Electropolished for Ultra High Purity Systems |
| Non-Electropolished | (BA) Bright Annealed or (AP) Annealed & Pickled for High-Purity, (CFOS) Cleaned for Oxygen Grade Service or Corrosive Systems |
| I.D. Surface Finish Options | 5, 7 & 10 µin. Ra |
| JIS | 8A to 250A |
| Tolerances | In accordance with: ASTM: A269 & A632, JIS: G 3459 |
| Super Duplex tubing End | Plain End, Beveled End, Treaded, Ends are suitable for orbital welding |
| Marking | All Super Duplex tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
| Super Duplex tubing Application | Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger |
| Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Specialize in | Duplex Capillary Tube & Other Odd Size Duplex Heat Exchanger & Condenser Tubes Duplex Hydraulic tubing with OD up to 50.8 mm (2.0 in.) are delivered in bright annealed condition Duplex hydraulic tube with OD larger than 50.8 mm are supplied in the annealed and pickled condition, Or in polished condition |
| Marking & Traceability | Each Duplex Tubing is traceable to its producing mill and heat by an identification number etched within 24" (610mm) of one end. |
| Super Duplex tubing Test Certificate | Manufacturer Test Certificate according to EN 10204 3.1 B Laboratory Test Certificate from Govt. Approved Lab. Under Third Party Inspection |
| Super Duplex tubing Testing & Inspection | Visual inspection • Surface roughness measurement • Helium-leak testing • Scanning Electron Microscopy (SEM) • Auger Electron Microscopy (AES) • Election Spectroscopy for Chemical Analysis (ESCA or XPS) • Particle testing • Moisture testing |
| Common Name |
UNS No | BS EN No |
Steel Type |
Typical Chemical Composition % | 0.2% proof strength N/mm2 (min) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| %C | Cr | Ni | Mo | N | Cu | |||||
| 2304 | S32304 | 1.4362 | duplex | 0.015 | 23.0 | 4.0 | 0.055 | 0.13 | 400 | |
| 2205 | S31803 | 1.4462 | duplex | 0.015 | 22.0 | 5.5 | 3.0 | 0.14 | - | 450 |
| 2205 | S32205 | 1.4462 | duplex | 0.015 | 22.5 | 5.5 | 3.3 | 0.17 | 450 | |
| 255(UR52N) | S32520 | 1.4507 | super duplex | 0.015 | 25.0 | 7.0 | 3-5 | 0.28 | 0.13 | 550 |
| 2507 | S32750 | 1.4410 | super duplex | 0.015 | 25.0 | 7.0 | 4.5 | 0.28 | 0.3 | 550 |
| Zeron 100 | S32760 | 1.4501 | super duplex | 0.015 | 25.0 | 7.0 | 3.5 | 0.25 | 0.8 | 550 |
| Sandvik SAF3207 | S33207 | - | hyper duplex | 0.03 | 31 | 7.5 | 4.0 | 0.50 | 0.75 | 700 |
| Types | Out diameter | Sizes | Length |
|---|---|---|---|
| NB Sizes (in stock) | .0035” ~ 8” | 1/8", 1/4", 3/8", 1/2", 5/8", 3/4", 1", 1.25", 1.5", 2", 2.5", 3", 4", 5", 6" | Cut to length |
| Duplex Seamless Tube (Custom Sizes) | 6.35 mm OD To 101.6 mm OD | As per requirement | Cut to length |
| Duplex Welded Tube (ERW Tube) (in Stock + Custom Sizes) | 6.35 mm OD To 152 mm OD | As per requirement | Cut to length |
| 028 | = | .028" Thick |
| 035 | = | .035" Thick |
| 039 | = | .039" Thick |
| 049 | = | .049" Thick |
| 065 | = | .065" Thick |
| 083 | = | .083" Thick |
| 109 | = | .109" Thick |
| Wall | Sizes ( O.D.) |
|---|---|
| .010 | 1/16" , 1/8" , 3/16" |
| .020 | 1/16" , 1/8" , 3/16" , 1/4" , 5/16" , 3/8" |
| .012 | 1/8" |
| .016 | 1/8" , 3/16" |
| .028 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 3/4" , 1" , 1 1/2" , 2" |
| .035 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 7/16" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .049 | 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/8" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .065 | 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 3/4" , 2" , 2 1/2" , 3" |
| .083 | 1/4" , 3/8" , 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 7/8" , 2" , 2 1/2" ,3" |
| .095 | 1/2" , 5/8" , 1" , 1 1/4" , 1 1/2" , 2" |
| .109 | 1/2" , 3/4" , 1" , 1 1/4" , 1 1/2" , 2" |
| .120 | 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 2" , 2 1/4" , 2 1/2" , 3" |
| .125 | 3/4" , 1" , 1 1/4" , 1 1/2" , 2" , 3" , 3 1/4" |
| .134 | 1" |
| .250 | 3" |
| .375 | 3 1/2" |
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