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To ensure pipe joint welding quality, preheating prior to welding is required, it is applicable for all types of welding. The preheating and heated temperature shall comply to the requirements or welding process, when the ambient temperature is less than 0°C, steel pipes, other than austenitic stainless steel without preheating, should be heated to temp. 15°C above within distance 100mm from pipe end.

Common preheating methods include induction heating and flame heating. Pipe flame heaters which are manufactured by Luoyang Deping Mechanical Equipments Co., Ltd. includes internal and external type, it has features of simple structure, easy operation and low cost.

External pipe flame heaters turn around the outer pipe surface to heat the pipe evenly. The internal pipe heater needs a stand to support heating mechanism and turn around the inner pipe surface, in addition, the heating arm can be replaced with other radius to suit for a variety of pipe diameter heating.

Pipe flame heaters from our company are widely used on pipeline construction projects domestically and oversea, it has advantages of reasonable design, reliable performance and easy maintenance, furthermore we also offer custom-made design for users and win a good reputation among them.