2507 Duplex tubes, UNS S32750,EN1.4410,2507 Duplex stainless steel tube

2507 Duplex tubes, UNS S32750,EN1.4410,2507 Duplex stainless steel tube

Type of steel

Grade 2507 , UNS S32750 , EN1.4410 , DIN X2CrNiMoN2574 , SS 2328

2507 Duplex Stainless Steel tube, 2507 Duplex Stainless Steel Industrial tubes, 2507 Duplex Stainless Steel Industrial Welded tube, 2507 Duplex Stainless Steel seamless Pipes &Tubes Supplier, 2507 Duplex Stainless Steel seamless tubes,2507 Duplex stainless tube,2507 Duplex Stainless Steel capillary,2507 Duplex Stainless steel BA sanitary pipes,2507 Duplex Stainless steel precision pipes

TINSI-STEEL company professional supply of Duplex stainless and Super Duplex stainless steel seamless pipes&tubes and welded pipes&tubes (Duplex steel industrial tubes&pipes,Duplex steel BA sanitary tubes&pipes,Duplex steel precision tubes&pipes,Duplex steel capillary) , and a large ready stock about 200tons available in common materials like Duplex stainless 2205 ( UNS32205),2507(UNS32750), Z100(UNS32760).our expert team focusing on pipes/tubes more than 20 years,and start Duplex stainless steel about 5years,firm production and sell control all by self in stainless steel pipes&pipes that could provide competitive prices&quality.

Duplex stainless steels have a structure of approximately equal amounts of ferrite and austenitie and therefore may be referred to

as ferritic-austenitic stainless steel. The chromium varies from 18%-28% and a nickel content of 4.5% to 8% is insufficient to develop a fully austenitic crystal structure. Most grades contain molybdenum in the 2.5%-4% range, plus a small nitrogen addition which enables both strength and pitting resistance. Common uses include applications such as heat exchanger panels and tubes, tanks and vessels where high chloride concentrations are present eg sea water cooling, desalination, food pickling plants and aggressive marine waters.

Stainless steel 2507 is a high alloy super-duplex steel for service in extremely corrosive conditions. Developed mainly for applications exposed to high stresses in chloride-containing environments like seawater, it contains high amounts of chromium, molybdenum and nitrogen.

TINSI-STEEL Company profile

Wenzhou TINSI Steel Co., Ltd is one of the leaders manufacturer & stockist & exporters in stainless steel Pipes &Tubes.our team professional more than 20 years focus on manufacturing stainless steel tubes&pipes and Duplex steel tubes&pipes and Nickel alloy steel tubes&pipes in industrial pipes, precision pipes, sanitary pipes, capillary and needle pipe.

Our company and warehouse in Wenzhou，factory of industrial pipes moved to Songyang,in the stainless steel pipes&tubes that production and sell all control by self,Advanced technology and excellent quality with more than 1200 tons ready stock of industry pipes,offer best price with best services has made TINSI company a true performer in the market domestic.

in 2019，we start foreign business and believe keep always competitiveness that TINSI company will be a reliable partner for worldwide clients.In this new beginning, relying on the advantages of Wenzhou Stainless Steel Base, we also supplies various of stainless steel rods, plates, elbow tees, fittings, flanges, valves and other equipment supporting products for service better and convenient client.

Table 1—Chemical Compositions of Commonly Used DSS 2507 Composition, Mass % a, e

Table 2—ASME ad ASTM Specifications for DSS

Table 3—Mechanical Properties of Duplex 2507

Table 4-minmun values for wall thickness20mm/0.787inch of Duplex 2507 2205 2304

1Mpa=1N/mm2

a) Rp0.2 corresponds to 0.2% offset yield strength.

b) Valid for wall thickness less than or equal to 4 mm/0.157 inch.

TINSI-STEEL pipes&Tubes production Requirements for 2507,32750 Duplex stainless steels

1.Tubing shall be seamless or welded tubing, and if welded tubing is approved, it shall receive both hydrostatic testing and nondestructive electric (eddy current) testing in accordance with ASME SA-789. Tubing shall be manufactured from steel produced by the electric furnace process, and subsequently VOD or AOD. Secondary melting processes such as VAR and ESR are permitted.

2.Tubing shall be solution annealed at the minimum temperature or in the temperature range listed for the particular grade in ASME SA-789 for sufficient time to eliminate intermetallic precipitates and then rapid cooled by water quenching, or air or inert gas cooling to below 315 °C (600 °F). Other heat treatments and quenching media other than water must be approved by the purchaser.

3.The hardness testing criteria given in ASME SA-789 shall be modified to Rockwell C 28 maximum for lean and standard 22 % Cr DSS. Failure to meet this hardness requirement shall constitute failure of the specimen, and shall result in hardness testing being required on each length in the heat lot represented by the specimen.

4.For standard 22 % Cr and 25 % Cr DSS, one specimen representing each heat lot shall receive a microstructural examination per the requirements of ASTM A923 Test Method A. The presence of affected or centerline structures shall be grounds for rejection of the solution anneal batch represented by the specimen, and the batch shall require reheat treatment and retesting. The sample size shall be a 2.54 cm (1 in.) long tube specimen for each heat lot. In addition, ASTM A923 Test Method C shall also be done and meet the given criteria, or if not given, then a criteria agreed to by purchaser and supplier.

5.No weld repairs to tubes are permitted.

6.Tubes and tube bends shall not be heat treated after bending or straightening. For standard grades, cold work shall be limited to 15 % maximum which is equivalent to limiting U-bending to 3.3D bend radii minimum. For 25 % Cr DSS grades, bends can be made down to 1.5D bend radii with no heat treatment required. If the hardness requirement given in A.2.3 is exceeded doing to working or bending, re-solution annealing per A.2.2 will be required.

7.Lubricants shall be removed from tube surfaces prior to heat treatment. The fabricator shall submit heat treatment plans for approval, which will include precautions to minimize exposure of any sections to 700 °C to 950 °C (1300 °F to 1750 °F) as this could cause unacceptable intermetallic precipitation. The preferred heat treatment method is electric resistance, which is done for only seconds.

8.After heat treating, other than bright anneal procedures, all tubing shall receive a descaling treatment of pickling followed by a neutralizing and appropriate rinsing treatment. All mill scale shall be removed.

TINSI-STEEL production facilities allow us to control the process and quality, from melting to the finished product. The end result is a product that requirment is exactly in line with the data we publish. With many years experience in 2507,s32750 Duplex stainless steels and can help you meet technical challenges. Our manufacturer and engineers are always available high quality 2507,s32750 Duplex stainless steels tubes and pipes and work closely with you that will help you outperform your competitors.