Duplex Steel Exhaust Tubing Suppliers, Duplex Steel Seamless Tube

Duplex Stainless Steel Tubes exporters in India, Super Duplex Seamless Tubing Stockists

Duplex welded rectangular tubes Distributors, Super Duplex Steel High Pressure Tube manufacturer in India

Duplex Tube
Duplex Tube
Duplex Seamless Tube
Duplex Seamless Tube
Duplex Tubing
Duplex Tubing

FASTWELL offers a wide range of Duplex Steel Tube, which possess super mechanical properties. We also offer these products in different grades such as Duplex Tubes, and Super Duplex Tubes. The duplex structure provides our Super Duplex Steel Welded Tubes with extraordinary resistance to chloride stress corrosion cracking for inorganic acids. Usage of these Duplex Steel ERW Tubes should be limited to applications below 600 Degree F.
Extended elevated temp. exposure can reduce both the toughness and corrosion resistance of our Super Duplex Steel square Tubes. A light gauge of these Duplex Steel needle Tubes can be used to achieve the same design strength of a thicker nickel alloy. The savings in weight of our Tubes can dramatically reduce the overall cost of fabrication. These polished Tubes are highly resistant to uniform corrosion by organic Plateids such as acetic acid.
FASTWELL is 4th largest exporter and stockholder of these Duplex Steel mirror Tubes, which should be solution annealed and quenched after either hot forming or cold forming. We offer various sizes of Duplex and Super Duplex Stainless Steel rectangular Tubes. Duplex Steel EFW Tubes & Duplex welded gas tubes in duplex grade up to the biggest 4 inches in diameter in 20 feet long. Super Duplex Polish welded round tubes are available in bright polished finish.


Duplex Tube Price

Duplex Seamless Pipe Price/ ASTM A790 Duplex Seamless Pipe Price ($7190-$8500 USD/ TON) : USD $100
Duplex Welded Pipe Price / ASTM A790 Duplex Welded Pipe Price ($7100-$8500 USD/ TON) : USD $20
Duplex Alloy Pipe Price/ Alloy Price ($7200-$8500 USD/ TON) : USD $1-5
Duplex Stainless Steel Pipe Price ($7180-$8500 USD/ TON) : USD $19

Duplex Tubes Specification

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
We can also cut, thread, and groove Duplex Tubes to meet your specifications

Duplex Tube Wall Thickness

028 = .028" Thick
035 = .035" Thick
039 = .039" Thick
049 = .049" Thick
065 = .065" Thick
083 = .083" Thick
109 = .109" Thick

Super Duplex Tubing Tolerances

The Duplex tubes outer diameter (OD) are according to ASTM A269/A213. Duplex Tubing Tolerance specifications are as per below:

Duplex Tube OD Duplex Tube Tolerance
4mm to 35mm +/- 0.08mm
35mm to 38mm +/- 0.15mm
38mm to 60mm +/- 0.20mm
60mm and above +/- 0.25mm

Types of Duplex Tubes

Duplex Coiled Tubing
Duplex Coiled Tubing
Duplex Capillary Tube
Duplex Capillary Tube
Duplex U Shaped tubing
Duplex ‘U’ Shaped tubing
Duplex Gas Tube Ar 15 supplier
Duplex Gas Tube Ar 15 supplier
Duplex seamless tubing
Duplex Seamless tubing
Duplex Thin Wall tube
Duplex Thin Wall tube
Duplex Furnace Tube
Duplex Furnace Tube
Duplex Gas Tube
Duplex Gas Tube
Duplex Heat Exchanger Tubes
Duplex Heat Exchanger Tubes
Duplex boiler tube
Duplex Boiler Tube
Duplex welded tubing
Duplex Welded Tubing
Duplex Square Tube
Duplex Square Tube
Duplex Alloy Square Tube (Radius Corners)
Duplex Alloy Square Tube (Radius Corners)
Duplex Rectangle Tube
Duplex Rectangle Tube
Duplex tubing
Duplex tubing

Types of Duplex Seamless & Welded Tubes

Duplex Annealed Tubing Super Duplex Coil Tubing Heat Exchanger
Super Duplex Thin Wall Tubing Super Duplex Metric Tubing
Super Duplex Seamless Square Tubing Large Diameter Super Duplex Tube
Super Duplex Woven Mesh Tube Super Duplex Instrumentation Tubing
Duplex Steel Seamless Tubes Duplex Stainless Steel Round Tube stockist
Duplex Steel Welded Tubes manufacturer Duplex Steel Seamless Tubing
Duplex Steel Coiled Tubing supplier Super Duplex Capillary Tubing
Super Duplex Aerospace tubes Duplex High Pressure Tube
Super Duplex Sighting Tube Duplex Polish Tubes manufacturer
Duplex Elliptical and Oval Tubes Duplex Rectangular Tube
Duplex Condenser Tube Duplex Aero engine tubes
Duplex Steel straight tube boiler supplier Duplex furnace tube manufacturer
Duplex Mirror Tube Duplex Steel Rectangular Tube supplier
Duplex Stainless Steel Pitot Tube stockist Super Duplex Round Tube
Duplex Polished Tubing Duplex Steel Ornamental Tube manufacturer
Duplex Stainless Steel Perforated Tube WERKSTOFF NR. Flexible Tube
Duplex Finned Tube stockist Duplex Steel Dom Tube supplier
ASTM A789 Duplex Stainless Steel Perforated Exhaust Tube WERKSTOFF NR. Rhs Tube
Duplex Steel Corrugated Tube Duplex Steel Honed Tube
Duplex Slotted Handrail Tube Duplex Steel Thin Wall Tube supplier
ASTM A789 Duplex Stainless Steel Thick Wall Tube Super Duplex Threaded Tube stockist
ASTM A789 Duplex Stainless Steel U Shaped Tube Super Duplex Square Tube Mirror Finish
Duplex Steel Vacuum Tube supplier WERKSTOFF NR. Coaxial Tube
Ultra-High Purity Electropolished Duplex Tube Thin Wall Duplex Tube stockist
Super Duplex Instrument Tubing Super Duplex Square Tubing
Duplex Coil Tubing Duplex Boiler Tube

Duplex Tube Properties

Super Duplex mechanical properties & chemical composition

Typical compositions and proof strengths of common duplex stainless steels

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

Duplex Seamles Tubes Surface Finish

Surface Finish Internal Surface(ID) Exterbal Surface(OD)
Roughness Average(RA) Roughness Average(RA)
μ inch μm μ inch μm
AP Annealed & Pickled Not defined Not defined 40 or Not defined 1.0 or Not defined
BA Beight Annealed 40,32,25,20 1.0,0.8,0.6,0.5 32 0.8
MP Mechanical Polish 40,32,25,20 1.0,0.8,0.6,0.5 32 0.8
EP Electro Polish 15,10,7,5 0.38,0.25,0.20;0.13 32 0.8

Duplex Tube Sizes

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"

Duplex Tube Stock

Here is a list of our readily available stock of Duplex Tube

Super Duplex Tubing

Tubing available sizes

BEST PRICE OF
  • Duplex Oil and gas tubes distributor
  • ASME Duplex Seamless Tube
  • Seamless Duplex Tubing
  • Seamless Super Duplex Tube
  • Duplex Nuclear tubes suppliers
  • Duplex Chemical process tubes traders
  • Duplex Medical tubes manufacturers
  • Duplex Heat exchanger tubes stockist
  • Duplex Control lines manufacturers
  • Duplex Umbilicals suppliers
  • Duplex Hydraulic tubes traders
  • Duplex Electropolished Tubes
  • Duplex SCH 40 Tube exporter in India
  • Duplex SCH 80 Tube distributor
  • Duplex Oil & Gas Tubing distributor
  • Duplex SCH 40 Tube distributor
  • Duplex SCH 80 Tube manufacturers
  • Duplex Seamless Hollow Tubes
  • Stockist of Duplex Electropolished Tubes
  • ASTM/ASME Duplex Capillary Tubes
  • Duplex U Shaped Tube distributor
  • Duplex Tube suppliers
  • ASTM Duplex Decorative Tubes
  • Duplex Tubing exporter in India
  • Duplex Oil Tube suppliers
  • ASTM Duplex Instrumentation Tubes
  • Duplex Triangle Tube distributor
  • Duplex High-strength capillary tubing
  • Duplex Bellows Tubes exporter in India
  • Duplex precision tubes stockist
  • Duplex Transmission tubes importers
  • Duplex Pitot tubes exporter in India
  • Duplex encapsulated coiled tubing
  • Duplex High pressure tubes stockist
  • Duplex Nuclear Fuel tubes manufacturers
  • Duplex EFW Tubes Suppliers
  • distributor of Duplex Instrumentation tubes
  • exporter of Duplex high precision tubes
  • Duplex Nuclear Control Rod Tubes
  • Duplex Seamless Tubing stockist
  • Stockholder of Duplex Gas Tube Ar 15
  • Duplex Coil Tube importers
  • Distributor of Duplex Capillary Tubing
  • Supplier of Duplex Furnace Tube
  • Duplex Gas Tubing manufacturers
  • Duplex seamless coil tubing wholesaler
  • Duplex seamless straight tubing
  • Duplex cold drawn seamless tubes
  • Duplex Aerospace Engine Tubes stockist
  • Duplex Furnace Tubes manufacturers
  • Duplex Precision Tubing exporter in India
  • Duplex Hot finished seamless tubing (HFS)
  • Duplex Cold drawn seamless tubing (CDS)
  • Duplex Drawn over mandrel (DOM)
  • supplier of Super Duplex Finned Tube
  • Duplex Tubes for Precision Components
  • Duplex Stainless Steel Seamless Tube
  • Super Duplex Seamless Tubes
  • Duplex Stainless Steel Seamless Tube
  • Super Duplex Welded Tubes
  • Duplex Stainless Steel1 Welded Tube
  • Duplex Steel Welded Tubes
  • WERKSTOFF NR. Seamless Tubes
  • Super Duplex Buffer Tube
  • Super Duplex Box Tube
  • Mirror Finish Duplex Tube
  • Marine Grade Duplex Tube
  • ASME SA789 Duplex Steel Seamless Tube
  • ASME SA789 Duplex Steel Round Tubes
  • Duplex Mortar Tube stockholder
  • Duplex Radiant Tube exporter in India
  • Duplex Surface-controlled subsea safety valve control line tubing, mechanical tubing
  • Duplex Steel Round Tubes
  • Duplex Steel Round Tubing
  • Duplex Round Tube suppliers
  • Duplex Stainless Steel Round Tubes distributor
  • Duplex Steel Round Tube suppliers
  • Duplex Stainless Steel Welded Tube suppliers
  • Duplex Steel Round Tubes stockist
  • Duplex Seamless Tube
  • Super Duplex Welded Tube
  • Duplex Steel Coil Tubes
  • Alloy WERKSTOFF NR. Welded Tubes
  • Duplex Triangle Tube exporter in India
  • Duplex Hexagonal Tube distributor
  • Duplex Hollow Tubes Suppliers
  • exporter of Duplex thermocouple Tube
  • Trader of ASTM Duplex Polish Tube
  • Duplex Cold Drawn Tube stockist
  • Duplex ERW Tube manufacturers
  • High Quality Duplex Seamless Tube
  • Duplex Square Tube manufacturers
  • Duplex Round Tube exporter in India
  • Duplex Rectangular Tube traders
  • ASTM Duplex Round Tubes stockist
  • exporter of Duplex Colour Coated Tube
  • Duplex Welded Tube stockist
  • Duplex Secondary & Surplus Tube
  • Duplex Outside Polished Tube
  • ASTM/ASME Duplex Capillary Tubes
  • Duplex EFW Tube suppliers
  • Duplex Boiler Tubes distributor
  • Duplex Cold Drawn Tube wholesaler
  • Duplex U Shaped Tube suppliers
  • Duplex exhaust tubing manufacturers
  • Duplex Condensers tubes stockholder
  • Duplex Super Heaters exporter in India
  • distributor of Duplex Tubes for Heat Exchangers
  • Duplex redrawn tubing suppliers
  • Duplex seam-welded tubing stockist
  • supplier of Duplex cold-drawn coiled tubing
  • Duplex Chemical Process Tubes stockist
  • Duplex Welded coiled tubing distributor
  • Duplex Steel heat resistant tubing
  • custom Duplex tubing
  • Duplex header tubing
  • Duplex rectangular tubing
  • Duplex Cold Rolled Coiled Tubing
  • Duplex Heat-resistant capillary Tube
  • Duplex Square Tubing manufacturers
  • ASTM Duplex Heat Exchager Tubes
  • Duplex Tubing
  • Super Duplex Instrumentation Tubes
  • Duplex Steel coiled tubing
  • Duplex Steel straight tube heat exchanger
  • Duplex umbilical tubing
  • ASTM A789 Duplex Stainless Steel Tubing
  • Duplex extreme environment gas tube
  • Duplex tube stock
  • Duplex welded tubing stockist
  • Duplex tubing bends
  • Duplex thin wall tubing
  • custom Duplex tubing
  • Duplex tube sizes
  • Duplex cannula Tubes
  • Duplex pyrometer tubes
  • Duplex protective tubes
  • Duplex hypodermic tubing
  • Duplex capillary tube
  • Duplex Heat Exchanger Tube
  • Perforated Duplex Tube
  • Thick Wall Duplex Tube
  • 25mm Super Duplex Tube
  • Square Duplex Tube