L type finned tube:   Adopting the winding process, the production efficiency is high, uniform lamella distance , good heat transfer, high finization ratio, the base tube can be protected from air erosion. 

Application: Mainly used in air coolers, air heaters in petrochemical, power, paper, tobacco, building heating and other industries, and air heaters in spray drying systems for vegetable protein powder and starch in the food industry. Maximum working temperature: 230℃

LL typefinned tube: Under the L-shaped foundation, the fin root completely covers the outer surface of the base tube; to some extent, this fin type guarantees better corrosion resistance. Maximum working temperature: 170℃.

KL type finned tube: Before the fins are continuously wound on the surface of the steel pipe, the outer surface of the base pipe needs to undergo a knurling process; after the fins are wound, the root of the fin attached to the steel pipe will also be knurled to strengthen the steel pipe and Combination of fins. For this reason, this fin type ensures better heat transfer characteristics under the fins of L and LL. Maximum working temperature: 250℃

6. Can be made according to the special requirements of users.