AISI 329 Duplex Stainless Steel Seamless and ASTM A790 UNS S32900 Welded Pipe supplier in India
Unlike its other Duplex steel counterparts, the chemistry of alloy UNS 32900 has a higher content of carbon. Similar to most duplex alloys, the ASTM A790 UNS S32900 Seamless Pipe is intended to be used in applications where high strength and exceptional resistance to corrosion is desired at moderate temperature. Generally, the high alloyed chemistry permits these pipes to be used for marine engineering applications. The ASTM A789 UNS 32900 Duplex Stainless Steel Pipe is known to offer very good resistance to corrosion. However, this duplex stainless steel particularly exhibits superior resistance, when applied in chloride bearing environments. The higher content of chromium gives the alloy superior resistance to oxidation. A feature of high chromium steels is their ability to generate a passivated oxide layer, which is self repairing.
Moreover, the Duplex Stainless Steel AISI 329 Welded Pipe also offers extraordinary resistance to stress corrosion, fatigue corrosion as well as pitting corrosion. Other characteristics of the alloy include its high hardness, good plasticity & high tensile strength. Because the alloying content of grade UNS S32900 is lesser in comparison to grade 2205, the cost of producing a SS 329 Duplex Pipe tends to be relatively inexpensive. Despite a higher content of carbon, the weldability of these pipes is decent even with low heat input and the alloy could be welded with the use of welding consumables. Though the material contains a small amount of nickel in its alloy, manufacturers do not recommend using the AISI 329 Duplex Stainless Steel Pipe between a temperature range of 300 ⁰C – 900 ⁰C. At elevated temperature conditions, the alloy becomes brittle as it reaches the ductile to brittle transition phase. Generally in an annealed condition, the alloy is soft and ductile. But when the alloy is treated to an aging treatment or even a single precipitation treatment, the Duplex 1.4460 AISI 329 Seamless Pipe exhibits a substantial increase in its mechanical properties. Businesses pertaining to industries like cryogenic, pulp & paper, chemical, and aviation are frequent users of the highly economical ASME SA 789 UNS 32900 Pipe.

ASTM A789 UNS 32900 Duplex Stainless Steel Pipe

ASTM A790 UNS S32900 Seamless Pipe
AISI 329 Duplex Stainless Steel Pipe
Duplex 1.4460 AISI 329 ERW Pipe & SS 329 Duplex Pipe specification & dimensions
UNS 32900 Duplex Stainless Steel Pipe International Specification |
ASTM A789/ ASTM A790 |
Standard Specification |
ASME, ASTM, AISI, AMS, JIS, EN, SAE, DIN, NF, TOCT, DS, DTD, GB |
ASTM A789 UNS 32900 Seamless Pipe Size |
- OD: 4 to 219mm
- Wall Thickness: 0.5 to 20mm
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A789 UNS 32900 Duplex Stainless Steel Welded Pipe Size |
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ASME SA 789 UNS 32900 EFW Pipe Size |
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AISI 329 Duplex Stainless Steel Pipe WT |
SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
ASTM A789 32900 Pipe manufacturing techniques |
Seamless / ERW / EFW/ Welded / Fabricated / CDW/ LSAW/ Seam-Welded / Redrawn |
Origin of UNS S32900 Duplex Stainless Steel pipe material |
Indian, European, Korean, Japanese |
SS 329 Duplex Pipe End Types |
- BE : Beveled end
- TOE / POE = Treaded One End / Plain One End
- TOE / BOE = Treaded One End / Beveled One End
- PBE = Plain Both Ends
- BBE : Bevel both ends
- BLE : Bevel large end
- BSE : Bevel small end
- POE / BOE = Plain One End / Beveled One End
- TBE = Treaded Both Ends
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Form |
Round, Square, Rectangular |
UNS S32900 Stainless Steel Pipe Length |
Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded |
SA 789 UNS 32900 Duplex Steel Pipe Delivery Condition |
Annealed and Pickled, Hot Finished, Polished, Bright Annealed, Cold Drawn |
Duplex 1.4460 AISI 329 Pipe Packing |
- Ply Wooden Boxes
- PE Fabric Bundles
- Steel Strips Bundled
- Standard seaworthy export packing
- Plastic Bags, or as required
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A789 UNS 32900 Duplex Steel Pipe Value Added Services |
Cut to size, thread, and groove |
Port |
Mumbai, India |
Stocking distributor of leading ASTM A789 UNS 32900 Duplex Stainless Steel Pipe manufacturers |
- Sanyo Special Steel, Japan make ASTM A789 UNS 32900 Pipe
- Schoeller Bleckmann, Austria make A789 UNS 32900 Duplex Stainless Steel Seamless Pipe
- Nippon Steel Corporation, Japan make ASME SA 789 UNS 32900 Pipe
- Sumitomo Metals, Japan make Duplex Stainless Steel AISI 329 Pipes
- Seah Steel Corporation, Korea make AISI 329 Duplex Stainless Steel Seamless Pipe
- Kobe Special Tube, Japan make ASTM A789 32900 Pipe
- Tubacex Tubos Inoxidables S.A., Spain make UNS S32900 Duplex Stainless Steel Pipe
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A789 UNS 32900 Duplex Steel Pipe Dimensional Specification |
ANSI/ ASME B36.10, B36.19, B2.1 |
Marking on SA 789 32900 Duplex Steel Pipe |
- Specification
- Material Grade
- Nominal Size
- Schedule or Wall Thickness
- Method of Manufacturing (Seamless or Welded)
- Heat Number
- Manufacturer’s Name or Custom Logo - on request
Marked Pipe Sample: ASTM A789 UNS 32900 12" NB SCH 40S SEAMLESS HEAT NO. XXXX |
ASTM A789 UNS 32900 Hot Finished Pipe |
Schedule 40S A789 UNS 32900 Duplex Stainless Steel Pipe |
UNS S32900 EN 1.4460 Rectangle Pipes |
Cold Drawn Duplex Stainless Steel AISI 329 Seamless Pipes |
Cold Drawn ASME SA 789 UNS 32900 Pipe |
Duplex Stainless Steel AISI 329 Seam Welded Pipe |
AISI 329 Duplex Stainless Steel Overlay Pipe |
ASTM A789 32900 Bush Hex Pipe |
A789 32900 Duplex Steel Capillary Pipes |
Small diameter A789 UNS 32900 Duplex Stainless Steel pipes |
AISI 329 Duplex Stainless Steel Hollow Pipes |
A789 32900 Duplex Steel High pressure Pipes |
UNS S32900 Duplex Stainless Steel Custom Pipes |
SS 329 Duplex Beveled End Pipes |
Thick Wall UNS S32900 Duplex Stainless Steel Pipe |
Thin Wall SS 329 Duplex Pipe |
UNS S32900 Stainless Steel Cold Drawn Seamless Pipe |
High Temperature SA 789 UNS 32900 Duplex Steel Pipe |
Seamless Duplex 1.4460 AISI 329 Pipe |
A789 UNS 32900 Duplex Steel Welded Pipe |
A789 UNS 32900 Duplex Steel Schedule 40 Pipes |
Welded SA 789 UNS 32900 Duplex Steel Cold Drawn Pipes |
SA 789 32900 Duplex Steel ERW Pipe |
A789 32900 Duplex Steel EFW Pipe |
UNS S32900 Stainless Steel Round Pipes |
ASTM A789 32900 Fabricated Pipes |
Duplex 1.4460 AISI 329 Square Pipes |
SA 789 32900 Duplex Steel Schedule 5S Pipes |
ASTM A789 UNS 32900 CDW Pipes |
A789 UNS 32900 Duplex Stainless Steel Rectangular Pipes |
ASME SA 789 UNS 32900 SMLS Pipes |
Duplex Stainless Steel AISI 329 Hexagonal Pipes |
SA 789 32900 Duplex Steel Polished Pipes |
ASTM A789 UNS 32900 Exhaust Pipes |
Duplex Stainless Steel 329 Clad Pipes |
ASME SA 789 UNS 32900 Annealed pipes |