China The Best Price for Duplex Stainless Steel Seamless Heat Exchanger Annealed Tubes

Duplex Steels are extremely resistant to corrosion and have exceptional mechanical strength for the special applications.
Standard: ASTM A789/ ASTM A790, ASTM A312 or closer
Grades: UNS S31803, S32304, S32205, S32750, S32507, S31050, S33207, S32101 etc.
Size: OD: 5 - 1016 mm, Wt: 0.5~ 25mm, Length: 20m or as required
Tongji Engineering offers a comprehensive list of tubing alloys to fit the most and least common applications.
Stainless Steel: 304 Tubing, 316/ 316L/ 316H, 317/ 317L, 309S/ 310H, 310S/ 310H, 321/321H, 347/ 347H
Duplex Stainless Steel: UNS S31803, S32304, S32205, S32750, S32507, S31050, S33207, S32101
Super Austenitic: 6 Moly, 825, 904L, 800/ 800H, N08811
Super Ferritics/ Ferritics: 29-4C, S44627, 439, 444, 446
Nickel Alloy: 20, 200/ 201, 276, 400, 600, 22, 625, 686
Titanium: Grades 1, 2, 3, 7, 9, 11, 12, 16, 17, 26 and 28
Copper alloys: C70600, C71500, C71640, C44300, C68700
Markets We Serve:
Oil & Gas, Power Generation, Chemical, Petrochemical, Food & Dairy, Beverage, Pharmaceutical, Biopharmaceutical, General Commercial, Specialty Automotive
We always seek and improve our service as per requirement of our valued customers.
CommodityDuplex Steel seamless heat exchanger tubeProcess methodCold drawn/ Cold rolled/ WeldedMaterials GradesUNS S31803, S32304, S32750, S32707
UNS S31050, S33207, S32900, S31500 etc.Standards:ASTM A789/ 790, ASTM A312,
DIN17458, EN10216-5, JIS3463, JIS3459, GOST, BS or closer.SizeNPS:1/8 to 40" , Schedule: 5S to XXS. Length: 20m or as requiredOD: 5 - 1016 mm, Wt: 0.5~ 25mm, Length:20m or as requiredShapeIn straight length or as U-bendSurface FinishedAnneal/ Picking/ Manual Polish/ Mechanical Polish or as requiredInspection Testing 100% Ultrasonic Test, 100%Eddy Current Test, 100%Hydraulic Test,
100% X-Ray Test to welded pipeMechanical Test, Hardness Test, Inter-granular corrosion Test CertificateEN 1024 3.1/ 3.1B/ 3.2, PED, DNV, TUV PackingWooden case/ Steel framed plywood case/ simple packing Delivery TimeBy mutual agreement