Stainless steel heat exchanger tubes

Our factory manufacture Heat exchanger tube in an extensive range of austenitic stainless steels, duplex stainless steels, nickel alloys, titanium and zirconium, suitable for all types of heat exchangers, such as seawater coolers, condensers, evaporators, heaters and reheaters.

Ruimai's heat exchanger tube can be supplied in imperial and metric sizes, from outside diameter 12 mm up to 40 mm (0.472 to 1.575 in.). Special sizes can be made to order. we deliver heat exchanger tube in straight lengths up to 30 meters, or as U-bent tubes.

Lower life-cycle cost with duplex / super duplex stainless steels

Duplex / Super dulpex stainless steel heat exchanger tube produced by our factory perform exceptionally well in a variety of environments and media common in process industries, resulting in lower life-cycle costs.

Steel Grades

Ruimai manufacture heat exchanger tube / heat exchanger piping in a wide range of stainless steel, duplex / super duplex steel grades, and Titanium alloys in ASTM norm or EN/DIN stardards.

ASTM grades: 316 /316L, 304/304L, 321/321H, 316Ti, 347 / 347H, S31803, S32750,S32760, 2205, 904 / 904L. 
EN /DIN grades: 1.4301/1.4307, 1.4401/1.4404, 1.4541/1.4878, 1.4571, 1.4462, 1.4410, 1.4539.
​Titanium grades: Grade 1, Grade 2, Grade 3, Grade4, Grade 5, Grade 6, Grade 7, Grade 8, Grade 9, ...

Size range

Outside diameter of heat exchanger piping is normally from 6 mm to 88.9mm