Piyush Steel is a reliable manufacturer and supplier of Duplex Stainless Steel Pipes and Duplex stainless steel tubes for demanding process environments. The name "duplex" comes from a two-phase microstructure that splits roughly evenly between ferrite and austenite, giving the material a balance that single-phase stainless grades can't match. That dual structure resists chloride-induced pitting and stress corrosion cracking, which is exactly the failure mode that plagues standard austenitic pipe in cooling water systems and other aggressive chemical process streams. Manufacturing follows ASTM A790 for seamless duplex pipe, covering diameters and wall thicknesses suited to both new construction and retrofit piping runs.
Piyush Steel offers range of Duplex Stainless Steel Pipe and Tubes. It is called as Duplex because of its grouping of microstructure with equivalent amount of ferrite and austenite. They are formerly formed to combat oxidation that is caused by chloride bearing cooling waters in the company of other antagonistic chemical procedure fluids. Our range of ASTM A790 Duplex Steel Seamless Pipe are widely used as heat exchangers in refinery industries, petrochemical plants, Pulp & Paper industries, Beverage & Sugar industries, and more.
Duplex Steel Seamless Pipes
Duplex Steel Welded Pipe
Duplex Steel Seamless Tubing
Duplex Steel Welded Tubes
The higher strength of duplex grades over conventional 304 or 316 stainless also means thinner walls can carry the same pressure rating, which cuts material weight without sacrificing safety margin. That combination of corrosion resistance and mechanical strength is why refinery operators, petrochemical plants, and process industries specify duplex Stainless Steel Pipes for heat exchanger service rather than defaulting to austenitic alternatives. Beyond refining and petrochemicals, duplex stainless steel tubes see regular use across pulp and paper mills, where chloride-laden process water attacks conventional tube bundles, and in beverage and sugar processing lines that demand hygienic, corrosion-resistant flow paths. Each application shares the same underlying requirement: a material that holds up to years of chemical exposure without frequent replacement. Piyush Steel manufactures and supplies this range to meet that requirement across industrial heat exchanger and piping projects.
| Standard | : | ASTM / ASME SA 790. SA 789 , SA 790 |
| Type | : | SEAMLESS / ERW / WELDED/ FABRICATED Pipes |
| Length | : | Single Random, Cut Length |
| End | : | Plain End, Bevelled End, Threaded |
| Duplex Steel Pipes | Duplex Steel Tubes |
| Duplex Stainless Steel pipes | Duplex Stainless Steel Salzgitter Mannesmann tubes |
| Nippon Steel Duplex Steel pipes | Duplex Steel Sandvik tubes |
| Duplex Sanyo Special Steel seamless pipes | astm SA 789 Duplex steel tubes |
| Duplex Kobe Steel Welded pipes | ASME SA 790 Duplex steel Welded tubes |
| Duplex Steel ERW pipes | Duplex steel Tubacex FABRICATED tubes |
| Duplex Stainless Steel Tube | Duplex Stainless Steel Pipe |
Nippon Steel Duplex Steel Pipes & Tubes
Sandvik Duplex Steel Pipes & tubes
Sanyo Special Steel Duplex Pipes & Tubes
Kobe Steel Duplex Steel Pipes & Tubes
Schoeller Bleckmann Duplex Steel Pipes & Tubes
Salzgitter Mannesmann Stainless Duplex Steel Tubes
Tubacex Steel Duplex Steel Tubes
Duplex Stainless Steel Pipes are pipeline goods manufactured using dual-phase steel that contains about equal percentages of ferrite and austenite, thereby exhibiting higher strength and better chloride-resistance than normal austenitic pipe grades.
Pipes are sized and specified by nominal bore for pressure bearing process lines. Tubes are sized by outer diameter and wall thickness, usually for heat exchanger and instrumentation applications.
These are used in heat exchangers and process lines in contact with chloride-bearing fluids in refineries, petrochemical plants, pulp and paper mills, and beverage and sugar processing facilities.
ASTM A789 is for duplex tubes welded and seamless. ASTM A790 is for seamless and welded duplex pipe in similar industrial applications.
Select the pipe grade suitable for your process chemistry, chloride content and operating temperature. Check wall thickness against your system design pressure before placing your order.
Piyush Steel has been a prominent player in the tubular metal products industry since 1983. The largest manufacturer, supplier, exporter, and stockist of stainless steel seamless pipes and tubes is in Mumbai, India.

Office No. 9 & 10, 1st Floor, Krishvi Apartment, Khambatta Lane, Khetwadi, Mumbai - 400 004 (India).
Email : info@piyushsteel-pipes.com
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