Duplex Stainless Steel Seamless Tube

Duplex Stainless Steel Tube is a type of metallic tube that is used in applications that need metallic pipes and tubing. These are used in different industries like in the medical, chemical, petrochemical, pharmaceutical, marine and electric industries. Naman Pipe & Tubes is a proud manufacturer of different Seamless Duplex Tubes and accessories. As one of the leading DSS Tube suppliers we produce the tubing in many different varieties, sizes and shapes. There are seamless tubes, Welded Tubes, heat treated, electroplated and other types of tubes that are used in different purposes.

The main role of DSS is that it has strength from its ferritic structure and has high corrosion stress resistance from its austenitic structure. The combination makes these tubes be used in some of the sophisticated elevated temperature service applications such as the DSS Heat Exchanger Tubes. Our products are used in several industrial applications with different requirements. The Duplex Tubing can be of various shapes such as round, oval, square, rectangular or hexagonal. We also produce and sell specific types such as the DSS Furcation Tubing which is a compact packing of several tubes together for special applications. You can contact us for all your Tubing needs and we will deliver you with the highest of quality tubes.

Sizes of Duplex Stainless Steel Tube

Duplex Tubes Specification

Standard Specification	ASTM A789 ASME SA 789
Manufacturing Standard	DIN, ISO, GB, JIS, BA, ANSI, AISI, BS, EN
Material	UNS S31803, S32205
Common types	Seamless / ERW/ Welded / DOM / EFW / Fabricated / CDW / CEW
Specialized in	Coiled Tubing, U Bend Tubes for Heat Exchangers, Capilary Tubing
End Types	Plain End, Beveled End, Treaded
Length	Single Random, Double Random & Cut Length.
DSS Tube Color	Nickel White
Brand	NAMAN
Surface Finish Types	Fine
Trade Terms	FOB CFR CIF EXW
Approvals	NACE MR 0175

Types of Duplex Tubing

Seamless Duplex Tubes Price List

Product Name	Price in INR
DSS Round tube - (material -S32101 ) Length 10.05 M)	INR 280 Per Unit

Available Grades

ASTM Specification	ASME Specification	Seamless/ Welded Tubing
ASTM A789	SA 789	UNS S31803
ASTM A789	SA 789	UNS S32205
ASTM A789	SA 789	Duplex 2205

Why Duplex Tubes are used in Heat exchangers and superheaters?

Heat exchangers and super heaters are applications which operate under elevated temperatures. The pipes used in these applications should withstand high temperatures. With the high temperatures comes the oxidation risk. So the pipes that are used in these applications should be able to withstand high temperatures, at the same time not be oxidized. The duplex steel grades have high operating temperatures up to 475 degrees in general and they are oxidation resistant at high temperatures. So the duplex stainless steels are appropriate for high temperature applications and they are used in heat exchangers and in super heaters.

Chemical properties of seamless & welded tubing

DSS tubing temperature limit

DSS Tubes Mechanical Strength