Duplex Stainless Steel Tube Supplier
ASTM A790 Duplex Pipe Material Price In India, Duplex Stainless Steel welded Pipes Exporters.
Cut to size Duplex ERW Pipe Availability.

Duplex Seamless Pipe

Duplex Seamless Tube

Duplex Steel Tubing
Tubos India is one of the large manufacturers for high quality Duplex & Super Duplex Pipes and Tubes. The products in different grades such as Duplex S32205 Pipes, Duplex 31803 Pipes, Super Duplex S32750 Pipes and Super Duplex S32760 Pipes. Duplex Steel Seamless Pipes is a stainless steel designed for application which demands exceptional corrosion resistance and strength. Super Duplex Steel Welded Pipes is a mixture of microstructure of austenite and ferrite (50 / 50) which has improved strength over ferritic and austenitic steel grades. The main difference is that the Duplex Steel EFW Pipes has a higher molybdenum and chromium content which gives the material greater corrosion resistance than standard duplex grade. The Duplex Steel Round Pipes has lower alloying price when compared with similar austenitic and ferritic grades with equipment corrosion resistance in chloride containing environment due to the material increased yield and tensile strength. Meanwhile, the Duplex Steel Rectangular Pipes has 4% molybdenum, 25% chromium and 7 % nickel.
Duplex and Super Duplex Stainless Steel Tubes possess great mechanical properties. The high molybdenum, chromium and nitrogen content in the Duplex Steel Seamless Tubes results in excellent resistance to chloride pitting and crevice corrosion attack. A light gauge of the Duplex Steel Round Tubes can be used to achieve the same design strength of a thicker nickel alloy. The duplex structure provides our Welded Super Duplex Steel Tubes with exceptional resistance to chloride stress corrosion cracking. Usage of the Duplex Steel EFW Tubes should be limited to applications below 600 Degree F(316 Degree C). The Duplex Steel Rectangular Tubes is highly resistant to uniform corrosion by organic Plateids such as acetic and formic acid. Super Duplex Steel Electropolish Tubes is also highly resistant to inorganic acids, especially if they contains chloride.
Pipe Types | Out diameter | Wall thickness | Length |
---|---|---|---|
NB Sizes (in stock) | 1/8” ~ 8” | SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 | Upto 6 Meters |
Seamless Pipe (Custom Sizes) | 5.0mm ~ 203.2mm | As per requirement | Upto 6 Meters |
Welded Pipe (in Stock + Custom Sizes) | 5.0mm ~ 1219.2mm | 1.0 ~ 15.0 mm | Upto 6 Meters |
Tube 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 |
Seamless Tube (Custom Sizes) | 6.35 mm OD To 101.6 mm OD | As per requirement | Cut to length |
Welded Tube (ERW Tube) (in Stock + Custom Sizes) | 6.35 mm OD To 152 mm OD | As per requirement | Cut to length |
Duplex Pipe composition & technical information
Typical compositions and proof strengths of common stainless steels
Common Name | UNS No | BS EN No | Typical Chemical Composition % | 0.2% proof strength N/mm2 (min) | |||||
---|---|---|---|---|---|---|---|---|---|
%C | Cr | Ni | Mo | N | Cu | ||||
2304 | S32304 | 1.4362 | 0.015 | 23.0 | 4.0 | 0.055 | 0.13 | 400 | |
2205 | S31803 | 1.4462 | 0.015 | 22.0 | 5.5 | 3.0 | 0.14 | - | 450 |
2205 | S32205 | 1.4462 | 0.015 | 22.5 | 5.5 | 3.3 | 0.17 | 450 | |
255(UR52N) | S32520 | 1.4507 | 0.015 | 25.0 | 7.0 | 3-5 | 0.28 | 0.13 | 550 |
2507 | S32750 | 1.4410 | 0.015 | 25.0 | 7.0 | 4.5 | 0.28 | 0.3 | 550 |
Zeron 100 | S32760 | 1.4501 | 0.015 | 25.0 | 7.0 | 3.5 | 0.25 | 0.8 | 550 |
Sandvik SAF3207 | S33207 | - | 0.03 | 31 | 7.5 | 4.0 | 0.50 | 0.75 | 700 |
Duplex Seamless Steel 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 STEEL PIPE & TUBES SPECIFICATIONS | ||
Specification | : | ASTM A 790 ASME SA 790 |
Dimensions | : | ASTM, ASME and API |
Size | : | 1/2″ TO 6′ IN OD & NB IN Various SWG & SCH |
Specialized in | : | Large Diameter Size |
Schedule | : | SCH20, SCH30, SCH40, STD, SCH80 |
Type | : | Seamless / Welded / ERW / Fabricated |
Form | : | Round, Hydraulic, Etc. |
Length | : | Single Random, Double Random & Cut Length. |
End | : | Plain End, Beveled End, Threaded |
Test | : |
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Stockist of Mirror Polished Duplex Square Tube, ASME SA790 Duplex High Pressure Pipe Wholesaler in India, Duplex Steel Alloy Seamless Pipe Manufacturer in India.
Types of Duplex Seamless & Welded Pipe Tubes:

Duplex Seamless Pipe

Duplex Welded Pipe

Duplex Exhaust Pipe

Duplex Pipe material

Duplex Weld Pipe

Duplex Lined Pipe

Duplex Square Pipe

Duplex Clad Pipe

Duplex Flex Pipe

Duplex Rectangle Pipe

Duplex Square Pipe (Radius Corners)

Duplex Hollow Pipe

Duplex Coiled Tubing

Duplex Capillary Tube

Duplex ‘U’ Shaped tubing

Duplex Gas Tube Ar 15 supplier

Seamless Duplex Tubing

Duplex Thin Wall tube

Duplex Furnace Tube

Duplex Gas Tube

Duplex Heat Exchanger Tubes

Duplex boiler tube

Duplex welded tubing

Duplex Square Tube

Duplex Steel Square Tube (Radius Corners)

Duplex Rectangular Tubing

Duplex tubing
Duplex Steel Pipe Price List
Pipe :
- seamless Steel pipe
US $2400-4000 / Ton (FOB Price) - seamless pipe astm A790
US $S31803 / S32205-1200 / Ton (FOB Price) - Super Duplex seamless pipe
US $400-2000 / Ton (FOB Price) - ASTM A790 welded pipe
US $840-2000 / Metric Ton (FOB Price) - sa790 seamless pipe
US $1.5-9 / Kilogram (FOB Price) - Duplex seamless steel pipe
US $840-2000 / Metric Ton (FOB Price) - ASTM A790 Welded Steel Pipe
US $400-1000 / Ton (FOB Price)
Tube :
- Duplex seamless Steel tubes
US $2400-4000 / Ton (FOB Price) - seamless Steel tube astm A789 Duplex
US $S31803 / S32205-1200 / Ton (FOB Price) - Super Duplex seamless tube
US $400-2000 / Ton (FOB Price) - ASTM A789 welded Steel tube
US $840-2000 / Metric Ton (FOB Price) - SB789 Super Duplex welded Steel tube
US $1.5-9 / Kilogram (FOB Price) - Duplex steel tube manufacturer
US $840-2000 / Metric Ton (FOB Price) - ASTM A789 Welded tube
US $400-1000 / Ton (FOB Price)
Duplex Steel Pipe Size Chart
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 Steel Pipe Weight Chart

Duplex Pipe Pressure Rating
Tube O.D. (in.) | Wall Thickness of Tube (inches) | |||||||
---|---|---|---|---|---|---|---|---|
.028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
Working Pressure (psig) | ||||||||
1/8 | 7900 | 10100 | ||||||
1/4 | 3700 | 4800 | 7000 | 9500 | ||||
5/16 | 3700 | 5400 | 7300 | |||||
3/8 | 3100 | 4400 | 6100 | |||||
1/2 | 2300 | 3200 | 4400 | |||||
3/4 | 2200 | 3000 | 4000 | 4600 | ||||
1 | 2200 | 2900 | 3400 | 3900 | 4300 |
