Zhejiang Ruimai Stainless Steel Tube Co., Ltd produces and supplies tubes and pipes for many types of boiler applications. We do, for example, offer superheater tubes and reheater tubes in a comprehensive range of stainless steels and nickel alloys. Stainless steel boiler tubes usually are delivered under below standards or customers‘ requests:

ASMT A 213, A 312

EN 10216-5

EN 10297-2

Steel grades available

EN / DIN: 1.4301/4307, 1.4401/4404, 1.4541/4878, 1.4571, 1.4462, 1.4539, 1.4410, etc
ASTM: 304/304L, 316 /316L, 321/321H, 316Ti, 347 / 347H, 2205, S31803, S32750, S32760, 904 / 904L.

Size Range

Outside diameter: 6 mm to 219 mm.

When delivered in straight length, the max length of boiler tubes can reach up to 18 meters, and boiler tubes can also be manufactured as Stainless steel U-bent tubes.

Heat treatment

Boiler tubes and boiler pipes are usually heat treated in solution annealed treatment under temperature no less than 1100 centi-degree, and for some applications, stable heat treatment is applied on customer's request.

Application

Stainless steel boiler tubes mainly are used for boiler applications and heat exchanger applications. Boiler tubes with steel grade TP 347/347H are used as heat resistant tubes/ high temperature pipes for high temperature boiler applications.