What is a duplex steel pipe, and what are its key characteristics?
Duplex steel pipe is a type of pipe that is constructed using duplex stainless steel, a material known for its exceptional strength and corrosion resistance properties. Duplex stainless steel combines austenitic and ferritic stainless steel, offering a unique microstructure that contributes to its advantageous characteristics. The key features of duplex steel pipe include high tensile strength, excellent resistance to various forms of corrosion such as pitting and crevice corrosion, good weldability, and exceptional durability.

These pipes can withstand harsh environments, making them suitable for applications in oil and gas, chemical processing, desalination, and offshore systems. Additionally, duplex steel pipes offer enhanced resistance to stress corrosion cracking, making them ideal for demanding and corrosive environments. Duplex steel pipes provide a reliable and efficient solution for industries requiring strength, corrosion resistance, and longevity in their piping systems.

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Schedule 40 Duplex Steel Pipe, Duplex Steel Pipe, Duplex Steel Pipe, Duplex Steel Piping, DSS Pipe , Duplex Steel Pipe Supplier In Mumbai, India.

What are the advantages of using duplex steel pipes compared to other types of pipes?
Duplex steel pipes offer several advantages over others, making them a preferred choice in various industries. Their excellent corrosion resistance properties allow them to withstand harsh environments and aggressive substances, such as corrosive chemicals, seawater, and acidic solutions. This corrosion resistance helps prolong the pipes' lifespan, reducing maintenance costs and minimizing the risk of leaks or failures.

Duplex steel pipes exhibit high strength due to their unique microstructure combining austenitic and ferritic phases. This strength enables them to withstand high pressures and temperature variations, making them suitable for applications that require reliable performance under demanding conditions.

Another advantage is the good weldability of duplex steel pipes. They can be easily joined using common welding techniques, ensuring efficient and cost-effective installation processes. Additionally, their weldability allows for modifications or repairs to be made on-site, minimizing downtime during maintenance activities.

Specification Of Duplex Steel Pipe

Pipe Standard ASTM A790 ASME SA790 / ASTM A928 ASME SA928
Pipe Dimension ANSI/ASME B36.19M, ANSI/ASME B36.10M
Pipe Sizes 1 / 2" NB - 24" NB
Pipe Outside Diameter 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Steel Pipe Manufacturing Process Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded
Duplex Stainless Steel Pipe Shapes Hydraulic, Round, Rectangle, Square, Hex, Honed
Duplex Stainless Steel Pipe Schedule SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Pipe Ends Half Hard, Soft, Hard, Quarter Hard, Spring Hard
Delivery Condition Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Value Added Services Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing

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Types Of Duplex Steel Pipes

Duplex Steel Round Pipe

Duplex Steel Round Pipe

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Duplex Steel 304H Square Pipe

Duplex Steel Square Pipe

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Duplex Steel Rectangular Pipe

Duplex Steel Rectangular Pipe

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Duplex Steel Polished Pipe

Duplex Steel Polished Pipe

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Widest Range of Duplex Steel Pipes in Mumbai, India.

  • Widest RangeSchedule 5 Duplex Steel Pipe
  • Widest RangeSchedule 10 Duplex Steel Pipe
  • Widest RangeSchedule 40 Duplex Steel Pipe
  • Widest RangeSchedule 80 Duplex Steel Pipe
  • Widest RangeSchedule 160 Duplex Steel Pipe
  • Widest RangeSchedule XXS Duplex Steel Pipe
  • Widest RangeSchedule XS Duplex Steel Pipe
  • Widest RangeDuplex Steel Electropolish Pipe
  • Widest RangeDuplex Steel Dairy Pipe
  • Widest RangeDSS Pipe HSN Code
  • Widest RangeDuplex Steel Round Pipe
  • Widest RangeLarge Diameter Duplex Steel Pipe
  • Widest RangeASTM A790 Duplex Steel Pipe
  • Widest RangeASME SA790 Duplex Steel Pipe
  • Widest RangeDuplex Steel Pipe Price 20 Feet
  • Widest RangeDuplex Steel Hollow Pipe
  • Widest RangeASTM A790 Duplex Steel Pipe
  • Widest RangeASME SA790 Duplex Steel Pipe
  • Widest RangeDuplex Steel ERW Pipe
  • Widest RangeDuplex Steel EFW Pipe

Check Other Pipes Types In Detail

Duplex Steel Pipes Equivalent Grades

STANDARD WERKSTOFF NR. UNS
Duplex Steel 1.4462

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Duplex Steel Pipes Price

Product Price
Custom Size 4 Inch DSS 1.4462 Pipes Price US $ 1360 - 12200 / Ton
Duplex Steel Pipe Price US $ 1570 - 3600 / Ton
Duplex Pipe Price List $1500 - 1550/ Ton
Duplex Steel Pipe Price US $ 1350 - 2500 / Ton
SS 1.4462 Square Pipe Price List US $ 28 - 37 / kg
20mm Diameter Polished Duplex Steel Pipes Price $998.00 - $1,480.00/ Ton
ASTM A790 SCH 5S Plain End Duplex Steel Pipe Price List $780.00 - $1,650.00/ Ton
Ferritic Duplex Steel Pipe Price Per KG $1500.00 - $2700.00/ Ton
Schedule 10 Duplex Steel Pipes Price $1,800.00 - $2,900.00/ Ton

For Quatation & Questions Related To Duplex Steel Pipes

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Duplex Steel Pipe Manufacturing Process

Rolling and welding

Firstly, the Duplex steel strips are made to gone through various quality checks and are trimmed at edges. They are then fed to the tubes mill by Duplex steel pipe manufacturers in India. The strips pass through the number of rollers as per the required size. In the tubes-mill, the strip is gradually converted into the tubular shape. The fitted welding machine is then used to weld trim edges of the strip using TIG welding process. The scraps and inside weld bead are removed instantaneously by the Tibo machine. In this way, rolled pipes and tubes are formed.

The cleaning and heating phase

The rolled Duplex steel pipes thus manufactured are cut to the required lengths depending upon the industrial demand. These Duplex stainless pipes and tubes are then subjected to cleaning to remove the dirt. Further, a heat treatment is given to these rolled pipes and tubes to remove the stresses that may occur due to welding and formation processes. Heat treatment is given on the continuously rolling hearth furnace. The furnace is fitted with temperature recorders and controllers. After the heat treatment process, the Duplex Steel tubes and pipes are straightened and subjected to pickling for removing scales from the surface.

Cold- drawing process

In some cases, the required size may not be obtained from the mill directly. Then, the cold operation process can be used to obtain the desired size. In cold drawing process, the tubes or pipes are coated with oxalic and soap solution. This solution acts as a lubricant to reduce friction while cold drawing operation. In the cold drawing process, the tube or pipe is drawn over the bench using Die plugs.

Finishing process

The drawn-out tube or dss pipe is then subjected to cleaning, heat treatment, pickling and straightening. The computerized ink jet marking machine is used to do the marking on the finished pipes or tubes. The pipe or tube is marked with grade of material, size, heat number and the stamp of third party inspection before passing on to Duplex steel pipe exporters. The Duplex tubes or pipes thus produced will undergo certain testing and quality checks. This process is followed by proper packing and dispatch. There are numerous numbers of Duplex steel pipe applications, these pipes and tubes are used thereafter for.

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Chemical Composition Of Duplex Steel Pipe

Grade C Mn Si P S Cr Mo Ni N Fe
0.030 max 2.00 max 1.00 max 0.030 max 0.020 max 22.0 – 23.0 3.0 – 3.5 4.50 – 6.50 0.14 – 0.20 63.72 min

Mechanical Properties Of Duplex Steel Piping

Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
7.805 0.285 1420 – 1465 2588 – 2669

Testing & Inspection of Duplex Steel Pipes

Testing (Destructive, Non Destructive)

Macro Test Dye Penetrant Test (DP Test)
Hardness Test Ultra Sonic Test (UT)
Pitting Resistance Test Eddy Current Testing
Positive Material Identification – PMI Testing Hydrostatic Test
Chemical Analysis – Spectro Analysis Hydrogen-Induced Cracking (HIC) Test
Mechanical Testing Such as Tensile, Elongation, Reduction of Area Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
Micro Test Radiography Test
Intergranular Corrosion (IGC) Test Impact Test
Flaring Test Bend Test
Flattening Test

Duplex Stainless Steel Pipe Sizes in MM

Designation of Diameter O/D Nominal Wall Thickness
DIA SCH.5S SCH.5 SCH 10S SCH.10 SCH.20S SCH.30 SCH.40S SCH.40 SCH 60
(A) (B) Meter MM Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr
6 1/8 10.3 1 0.23 1.2 0.27 1.5 0.33 1.73 0.37
8 1/4 13.7 1.2 0.37 1.65 0.49 2 0.58 2.24 0.64
10 3/8 17.2 1.2 0.47 1.65 0.63 2 0.74 2.31 0.87
15 1/2 21.3 1.65 0.01 1.65 0.81 2.11 1.02 2.11 1.02 2.5 1.15 2.77 1.29
20 3/4 26.7 1.65 1.03 1.65 1.03 2.11 1.3 2.11 1.3 2.5 1.49 2.87 1.71
25 1 33.4 1.65 1.31 1.65 1.31 2.77 2.13 2.77 2.13 3 2.24 3.38 2.54
32 11/4 24.2 1.65 1.67 1.65 1.67 2.77 2.73 2.77 2.73 3 2.9 3.56 3.44
40 11/2 48.3 1.65 1.93 1.65 1.93 2.77 3.16 2.77 3.16 3 3.35 3.68 4.11
50 2 60.3 1.65 1.93 1.65 2.42 2.77 3.99 2.77 3.99 3.5 4.9 3.91 5.52
65 21/2 73 2.11 3.75 2.11 3.75 3.05 5.34 3.05 5.34 3.5 6 5.16 8.77
80 3 88.9 2.11 4.59 2.11 4.59 3.05 6.56 3.05 6.56 4 8.37 5.49 11.47
90 31/2 101.6 2.11 5.25 2.11 5.25 3.05 7.53 3.05 7.53 4 9.62 5.74 13.78
100 4 114.3 2.11 5.93 2.11 5.93 3.05 8.5 3.05 8.5 4.5 12.18 6.02 6.32
125 5 141.3 2.77 9.61 2.77 9.61 3.4 11.74 3.43 11.74 5 16.8 6.55 2210
150 6 168.3 2.77 11.47 2.77 11.47 3.4 14.04 3.43 14.04 5.5 22.08 7.11 28.69
200 8 219.1 2.77 15 2.77 15 3.76 20.77 3.76 20.27 6.35 33.82 7.04 37.38 8.18 43.2 10.81 53.9
250 10 273.1 3.4 22.95 3.4 22.95 4.19 28.2 4.19 28.2 6.35 42.41 7.8 51.81 9.27 61.22 12.2 82.8
300 12 323.9 3.96 31.72 4.19 33.6 4.57 36.54 4.57 36.54 6.35 50.48 8.38 66.2 9.53 75.01 10.31 80.94 14.27 110.62
350 14 355.6 3.96 34.86 4.78 41.99 6.35 55.53 7.92 68.95 9.53 82.58 9.53 82.58 11.13 96 15.06 128.42
400 16 406.4 4.19 42.2 4.78 48.07 6.35 63.61 7.92 79.03 9.53 94.7 9.53 94.7 12.7 125.2 16.66 162.59
450 18 457.2 4.19 47.46 4.78 54.15 6.35 71.69 7.92 89.1 11.13 124.32 9.53 106.83 14.27 158.27 19.05 209
500 2C 508 4.78 60.23 5.54 69.7 6.35 79.76 9.53 118.93 12.7 157.51 9.53 118.9 15.06 185.89 2062 251.65
550 22 558.8 4.78 65.95 5.54 76.75 6.35 87.84 9.53 131.07 12.7 173.66 9.53 131.07 15.88 216.04 22.23 298.55
600 24 609.6 5.54 83.8 6.35 95.92 6.35 95.92 9.53 143.2 14.27 212.72 9.53 143.2 17.45 258.74 24.59 360.21
650 26 660.4 7.92 129.4 12.7 205.97 9.53 155.32
700 28 711.2 7.92 139.47 12.7 222.13 15.88 276.48 9.53 167.44
750 3C 762 6.35 120.15 7.92 149.55 7.92 149.55 12.7 238.28 15.88 296.68 9.53 179.56
800 32 812.8 7.92 159.62 12.7 254.44 15.88 316.88 9.53 191.69 17.48 348.11
850 34 863.6 7.92 169.64 12.7 270.5 15.88 336.96 9.53 203.74 17.48 370.22
900 36 914.4 7.92 179.77 12.7 286.75 15.88 357.28 9.53 215.93 19.05 427.09

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We have exported and supplied our Duplex Steel Pipes to solve piping related problems of our prestigious domestic and worldwide clients. We appreciate your business and the confidence you have placed in us.

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Supply Cities Of Duplex Stainless Steel Pipes

The cities listed here are where we have supplied our grade Duplex Steel pipes in bulk or small orders. Cities from metropolitan to rural areas we can provide Duplex Steel pipes to satisfy the needs of our clients.

Mumbai, Seoul, Melbourne, Secunderabad, Pune, Ho Chi Minh City, Calgary, Granada, Dallas, Jamshedpur, Nagpur, Atyrau, Geoje-si, Rio de Janeiro, Manama, Sharjah, La Victoria, Tehran, Mumbai, Indore, Algiers, Vadodara, Chandigarh, Hanoi, Nashik, Coimbatore, Riyadh, Doha, London, Perth, Brisbane, Rajkot, Gimhae-si, Karachi, Kuala Lumpur, Noida, Caracas, Jakarta, Lagos, Aberdeen, Ankara, Kolkata, Cairo, Montreal, Dubai, Bogota, Al Jubail, Istanbul, Thiruvananthapuram, Sydney, New Delhi, Howrah, Thane, Vung Tau, Petaling Jaya, Moscow, Chennai, Bangkok, Milan, Courbevoie, Kanpur, Faridabad, Surat, Bhopal, Ludhiana, Kuwait City, Bengaluru, Navi Mumbai, Los Angeles, Santiago, Ranchi, Port-of-Spain, Hong Kong, Mexico City, Toronto, Chiyoda, Edmonton, Ahvaz, Hyderabad, Muscat, Jeddah, Gurgaon, Baroda, Al Khobar, Pimpri-Chinchwad, Ahmedabad, Singapore, Abu Dhabi, Visakhapatnam, Madrid, Colombo, New York, Lahore, Houston, Ulsan, Busan, Haryana, Dammam, Ernakulam, Jaipur.

Documents Provided at the time of Domestic Sales or Export of Duplex Steel Pipes

Certificate of Origin Raw Material Test Reports
Commercial Invoice Heat Treatment Charts
Packing List Quality Assurance Plan (QAP)
Fumigation Certificates NABL approved Laboratory Test Reports
Letter of Guarantee Material Test Certificates
ROHS Certificate Certificate of Compliance/Conformity

Application Industries We Supply Duplex Steel Pipes

Duplex Steel Pipes For Tertiary Sector, Duplex Steel 1.4462 Pipes For Construction, Duplex Steel Pipes For Chemical Industry, Duplex Steel 1.4462 Pipes For Waste, UNS Pipes For Mining, Duplex Steel Pipes For Energy, Duplex Steel Pipes For Pharmaceutical Industry, Duplex Steel Pipes For Transport, Duplex Steel Pipes For Manufacturing, Duplex Steel Pipes For Production, Duplex Steel Pipes For Technology, Duplex Steel Pipes For Agriculture, Duplex Steel Pipes For Factory, Duplex Steel Pipes For Food Industry, Duplex Steel Pipes For Real Estate, Duplex Steel 1.4462 Pipes For Textile Industry, UNS Pipes For Engineering, Duplex Steel Pipes For Electronics, SS Pipes For Health care, Duplex Steel Pipes For Pulp and Paper Industry, Duplex Steel Pipes For Rail Transport.

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