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Duplex Pipes

ASTM A790 / 789 DUPLEX STAINLESS STEEL PIPES & TUBES, DUPLEX SEAMLESS PIPE SUPPLIER IN INDIA, DUPLEX PIPES / TUBES EXPORTER, MAUNFACTURER OF WELDED / ERW DUPLEX PIPES & TUBES, 2205 DUPLEX TUBES EXPORTER, DUPLEX WNR 1.4462, UNS S32205 / UNS S31803 PIPES SUPPLIER, 2205 SEAMLESS PIPES, DUPLEX EFW PIPES, 2205 TUBES SUPPLEIR, DUPLEX PIPES / TUBES / TUBING : S32205, S31803, S32304, S32750, F51, F53, 2205, 2507

Duplex Tubes Exporter | 2205 Pipes Exporter | Duplex Tubing | WNR 1.4462 | UNS S31803 Pipes | Duplex Pipes from 0.3 mm. OD: 8mm - 1000mm | Duplex Polish Pipes

Sandco Metal Industries specialize in manufacturing of Duplex Pipes & Tubes available in various grades and dimensions at affordable cost with no quality compromise. We are manufacturing Duplex Pipes & Tubes from past 25 years under supervision of technical experts with their expert guidance and support. Our Organization is ISO-9001:2008 certified with added advantage of products electro polishing, cutting as per customer requirements.

Duplex pipes & tubes are used in regions where austenitic stainless steel is not suitable as it is a cheaper alternative for corrosion resistance to various nickel-based alloys. We have a wide range of duplex pipes & tubes from ½” to 16” for immediate dispatch. The high mechanical strength of duplex grades is a result of the duplex microstructure and the alloying with nitrogen which gives opportunities for reducing both weight and cost. Duplex products have high thermal conductivity, Low coefficient of thermal expansion. Our Duplex Pipes & Tubes are available as seamless , welded and ERW (ERW stands for Electric Resistance Welded) pipes & tubes .

Duplex Seamless Pipes &  Tubes

Seamless pipes are made by drawing a solid billet over a piercing rod to create the hollow shell. As they do not require any welding, seamless pipes are considered to be stronger and more reliable. The advantage of seamless steel pipes lies in their ability to withstand pressure.

Duplex Welded Pipes & Tubes

Duplex Welded Pipes & Tubes manufacturing process starts with cold rolled strip of metal, roll formed into tubular shape and seam welded without the use of any filler material which then undergo various cold working techniques like Pilgering, cold drawing etc., until it reaches the exact size, tolerances, and temper in accordance to customer’s specifications.

Duplex ERW Pipes & Tubes 

ERW (Electric Resistance Welding) refers to a group of welding processes that produce coalescence of faying surfaces where heat to form the weld which is generated by the electrical resistance of material combined with the time and the force used to hold the materials together during welding .ERW pipes are used in various scaffolding, line pipes, engineering purposes, fencing etc.


Production, Supply, Stock Range, Specifications of Duplex pipes & tubes

Material Grade : S32205, S31803, S32304, S32750, F51, F53, 2205, 2507 etc.

Outside Diameter : 5.80 mm – 323.90 mm(0.23” to 12”)

Wall Thickness : 0.71mm -25.4mm(0.04”to 1”)

Standard : ASTM A789, ASTM A790, EN 10216-5ect

Process Method : cold drawn or cold rolled

Delivery Condition : Polished, Bright Annealed, Cold Drawn, Annealed and Pickled

Schedule : SCH 20, SCH 40, SCH30, SCH 80, STD

End Connections : Plain, Bevel, Screwed, Threaded

Type : Seamless / ERW / Welded /Fabricated/CDW

Form : Round pipes, Square pipes, Rectangular pipes, “U” Shape, Pan Cake Coils, Hydraulic Tubes

Length : Single Random, Double Random & Required Length , custom size 6 m length

End Protection : Plastic Caps

Outside Coating : Black painting, Anti corrosion oil, Galvanised finish, Finish as per customer requirements.

Inspection, Test Reports : Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports,  NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports, Visual Inspection Reports, Third Party Inspection Reports

Packing : Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or in accordance to Customers Requirements

Specials : Sizes and Specifications other than above can be manufactured on request


Duplex Pipes & Tubes Applications

Our Duplex Pipes & Tubes find their usage in various domains electronic, transport & traffic, paper & pulp industry, medicine, fertilizers, valve & pumps, petrochemical, food & drink, motor & chemical industry, nickel alloy in paper & pulp, nuclear power, energy industry, aerospace, architecture & construction etc.

Quality Assurance and Certifications

Sandco  Industries being a leading manufacturer of Duplex Pipes & Tubes which includes Duplex Steel UNS S31803, UNS S32205 Pipes & tubes etc.,  mainly focus on quality assurance of their products in all key steps of manufacturing process involving-selection of raw material, cutting, heating, forming, welding, inspection and test, coating. Our premium quality Duplex Pipes & Tubes have undergone and approved Material Test Report to certify that each product can overcome condition of pressure, temperature and corrosion. Our products are manufactured as per ASTM, ASME, DIN, MSS, EN and JIS codes.