Siddhagiri Metals & Tubes Logo

Duplex Steel Tube, Super Duplex Tube Suppliers

Engaged in Tube manufacturing, an obvious choice for Tube

Tube are tested to International standards, contact reliable & exclusive industrial supplier in india of Tube

Duplex Stainless 2205 is a nitrogen-enhanced duplex used in applications requiring high strength and excellent corrosion resistance. It is designed to combine improved resistance to stress corrosion cracking, pitting and crevice corrosion. Duplex 2205 provides nearly double the corrosion resistance typical in other austenitic stainless steels.

We at Siddhagiri Metals & tubes are known as specialist in Tube, 85% of our customers are associated with us for their regular requirements of Tube, many suppliers from China also procures Tube from us because We have the specialization & 37 years of experience to manufacture Duplex Steel Tube & Super Duplex Steel Tube.

Please note: we may supply special diameters in small quantities at request

Tube Manufacturer & Industrial Suppliers

Nickel Alloys Tubes
Sr. No.
Material
Size
Sch. & Swg.
Specification
Manufacturer
1
Cupro Nickel
Hastelloy
Nickel
Monel
Inconel
Alloy 20
Duplex
6.35 mm OD

To

154 mm OD

20 Swg.
18 Swg.
16 Swg.

 

14 Swg.
12 Swg.
10 Swg.
IS
BS
ASTM
UNS

Imported
&
Indian Mfg




UNS NICKEL MATERIAL GRADES
Duplex grade UNS Werkstoff DIN
Duplex Stainless Steel UNS S31803 1.4462 X2CrNiMoN22-5-3
Duplex Stainless Steel UNS S32205 1.4462 X2CrNiMoN22-5-3


Duplex Steel Tube Application
Duplex Steel Tube Uses
  • Architecture and construction
  • Aerospace
  • Nuclear Power
  • Fertilizers
  • Valve & Pumps
  • Petrochemical
  • Motor industry
  • Food and drink
  • Electronics
  • Transport and traffic
  • Pulp and paper industry
  • Medicine
  • Energy industry
  • Chemicals industry
  • Nickel Alloy in Pulp and Paper
Duplex Steel Tube Order & Packing Information
  Min. Order: 10 Pieces (or please enquire for your customized order)
Trade Terms: FOB, CIF
Payment Terms: L/C, T/T
Packing: as per requirement
Place of Origin: Mumbai, India
Means of Transport: Land, Ocean
Delivery Date: one or two week
Package: in wooden crate with plastic caps on each end.

 

More useful information

  • Duplex  stainless steels have a mixed microstructure of austenite and ferrite, the aim usually being to produce a 50/50 mix, although in commercial alloys the ratio may be 40/60. Duplex stainless steels have roughly twice the strength compared to austenitic stainless steels and also improved resistance to localized corrosion, particularly pitting, crevice corrosion and stress corrosion cracking. They are characterized by high chromium (19–32%) and molybdenum (up to 5%) and lower nickel contents than austenitic stainless steels.
The properties of duplex stainless steels are achieved with an overall lower alloy content than similar-performing super-austenitic grades, making their use cost-effective for many applications. Duplex grades are characterized into groups based on their alloy content and corrosion resistance.
  • Lean duplex refers to grades such as UNS S32101 (LDX 2101), S32304, and S32003.
  • Standard duplex is 22% chromium with UNS S31803/S32205 known as 2205 being the most widely used.
  • Super duplex is by definition a duplex stainless steel with a pitting corrosion equivalent (PRE) > 40, where PRE = %Cr + 3.3x(%Mo + 0.5x%W) + 16x%N. Usually super duplex grades have 25% chromium or more and some common examples are S32760 (Zeron 100 via Rolled Alloys), S32750 (2507) and S32550 (Ferralium),.
  • Hyper duplex refers to duplex grades with a PRE > 48 and at the moment only UNS S32707 and S33207 are available on the market.

Comparison of standardized steels

EN-standard
Steel no. k.h.s DIN
EN-standard
Steel name
SAE grade UNS
440A S44002
1.4112 X90CrMoV18 440B S44003
1.4125 X105CrMo17 440C S44004
440F S44020
1.4016 X6Cr17 430 S43000
1.4408 G-X 6 CrNiMo 18-10 316
1.4512 X6CrTi12 409 S40900
410 S41000
1.4310 X10CrNi18-8 301 S30100
1.4318 X2CrNiN18-7 301LN
1.4307 X2CrNi18-9 304L S30403
1.4306 X2CrNi19-11 304L S30403
1.4311 X2CrNiN18-10 304LN S30453
1.4301 X5CrNi18-10 304 S30400
1.4948 X6CrNi18-11 304H S30409
1.4303 X5CrNi18-12 305 S30500
X5CrNi30-9 312
1.4541 X6CrNiTi18-10 321 S32100
1.4878 X12CrNiTi18-9 321H S32109
1.4404 X2CrNiMo17-12-2 316L S31603
1.4401 X5CrNiMo17-12-2 316 S31600
1.4406 X2CrNiMoN17-12-2 316LN S31653
1.4432 X2CrNiMo17-12-3 316L S31603
1.4435 X2CrNiMo18-14-3 316L S31603
1.4436 X3CrNiMo17-13-3 316 S31600
1.4571 X6CrNiMoTi17-12-2 316Ti S31635
1.4429 X2CrNiMoN17-13-3 316LN S31653
1.4438 X2CrNiMo18-15-4 317L S31703
1.4362 X2CrNi23-4 2304 S32304
1.4462 X2CrNiMoN22-5-3 2205 S31803/S32205
1.4539 X1NiCrMoCu25-20-5 904L N08904
1.4529 X1NiCrMoCuN25-20-7 N08926
1.4547 X1CrNiMoCuN20-18-7 254SMO S31254