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Duplex Ferritic Austenitic Stainless Steel Tube Pipe - China

price: contact company for price

Product Description

Duplex Stainless Steels have a structure that contains both ferrite and austenite. Duplex alloys have higher strength and better stress corrosion cracking resistance than most austenitic alloys and greater toughness than ferritic alloys, especially at low temperatures. The corrosion resistance of duplex alloys depends primarily on their composition, especially the amount of chromium, molybdenum, and nitrogen they contain.

Applied Standard

ASTM A789/ ASME SA789 Seamless and welded ferritic/ austenitic stainless steel tubing for general service

ASTM A790/ ASME SA790 Seamless and welded ferritic/ austenitic stainless steel pipe

ASTM A312/ ASME SA312 Seamless and welded austenitic stainless steel pipes

ASTM A240 Standard Specification for Chromium and Chromium- Nickel Stainless Steel Plate,

Sheet, and Strip for Pressure Vessels and for General Applications

EN10216- 5 Seamless steel tubes for pressure purposes - stainless steel tubes

DIN17456 General purpose seamless circular stainless steel tubes - technical delivery conditions

DIN17458 Seamless circular austenitic stainless steel tubes subject to special requirements –

technical delivery conditions

JIS G3459 Stainless steel pipes

JIS G3463 Stainless steel boiler and heat- exchanger tubes

GOST 9941 Seamless cold and warm deformed tubes of corrosion- resistant steel - specifications

Test & Inspection Plan

1.100% pmi / spectro chemical analysis tests 100% pmi

2.100% dimension tests & 100% visual examination

3. tension test, flaring tests( for seamless tube/ pipe) / flange tests( for welded tube/ pipe) , hardness test, reversed flattening test

4.100% hydrostatic test/ 100% non- destructive tests 100% 100%

notes : all the tests and inspection need to provide with reports according to standard and test results

Option Test & Inspection Items

1. straightness test

2. roughness test

3. crystalling phase analysis

4. intergranular attack tests

5. shipping notification before shipment

6 . impact attack test under low temperature

The DocumentsLSI Will Provide to You

a. mtc ( material test certification) according to en10204/ 3.1 or en 10204/ 3.2

b. raw material certification

c. all the test & inspection reports as per po and standards

d. heat treatment report

e. shipping notification before shipment

f. quality warranty letter


Company Contact:


  • Phone: 8651262861001

  • Address: FL23,NO.225 SUHONG MIDDLE RD.,INDUSTRY PARK, Suzhou, China

  • Email: Email


Published date: December 11, 2014 -

  • Business Description: Since LSI s first successful supplying of such great material for China Steel Corporation, LSI has completed more than 500 Kilometers S30815 (Alloy 253MA,EN1.4825) tubes and pipes for domestic and overseas customers and got 100% satisfaction with 0 complaints from customers and end users till today. UNS S30815, equal to Alloy 253MA and EN 1.4835 , include rare earth metals (REM) and suitable for very high temperature applications (700 1100℃),particularly for conditions involving erosion corrosion in oxidizing and neutral environments, as well as sulfur attack. The excellent mechanical strength at high temperatures allows higher loads or thinner wall thickness than common high temperature steels e.g. 309S (EN 1.4833) and 310S (EN 1.4845).
    staibless steel tube,fins tube ,heat exchanger tubing

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