ASME SA 789 Duplex Stainless Steel Seamless Pipes

ASME SA 789 / SA 789M covers seamless and welded ferritic/austenitic stainless steel tubing for general corrosive service, with particular emphasis on resistance to stress corrosion cracking and chloride-containing environments.

For seamless tube supply, common duplex and super duplex grades include UNS S31803, S32205, S32750, and S32760. These tubes are widely used in heat exchangers, offshore platforms, seawater systems, desalination plants, chemical processing, and marine applications.

Specification of ASME SA 789 Duplex Stainless Steel Seamless Pipes:

Grades of ASME SA 789 Duplex Stainless Steel Seamless Pipes:

• UNS S31803

• UNS S32205

• UNS S32750

• UNS S32760

Why Choose ASME SA 789 Duplex Stainless Steel Seamless Pipes?

• High strength compared with austenitic stainless steels

• Excellent resistance to chloride stress corrosion cracking

• Good resistance to pitting and crevice corrosion

• Suitable for seawater, offshore, and chemical service

• Seamless tubing for reliable performance under pressure

• Available with full inspection and traceability

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Inspection & Tests of ASME SA 789 Duplex Stainless Steel Seamless Pipes:

• Chemical analysis

• Mechanical property testing

• Hydrostatic or NDT testing

• PMI testing

• Ferrite content testing

• Corrosion-related inspection upon request

• EN 10204 3.1 / 3.2 certificate available

Application of ASME SA 789 Duplex Stainless Steel Seamless Pipes:

• Heat exchanger tubing

• Condenser tubing

• Offshore and marine systems

• Seawater cooling lines

• Desalination plants

• Chemical process equipment

Package of ASME SA213 / ASME SA213M Stainless Steel Seamless Pipes:

These stainless steel seamless pipes and tubes are typically packed in seaworthy export packaging to ensure safe transportation and long-distance delivery.

Depending on the product size and customer requirements, the pipes or tubes are bundled with protective straps, packed in wooden cases, plywood cases, or hexagonal bundles, with both ends protected by plastic caps where applicable.

Each package is clearly labeled with grade, size, standard, heat number, and shipment details for full traceability. Waterproof wrapping, woven bags, and anti-rust protection can also be provided to ensure the materials arrive in good condition during ocean shipment and storage.

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