The lifetime of spiral steel pipe has relationship with decarburization, if the surface decarburize, surface strength and wear resistance will reduce the direct impact on the life of daily use. In the heat treatment process, it should be to try not to let the inner and outer walls and exposed to the air. The resulting medium spiral steel surface decarburization is mainly oxygen, water vapor and an oxidizing gas such as carbon dioxide, when the surfaces of the coil and the heated gas contacts the coil will cause oxidation and decarburization, therefore, the control of carbon dioxide in the furnace and the proportion of carbon monoxide is very important. In fact, the spiral steel forging furnace protective atmosphere of nitrogen was added is very effective, some of the nitrogen oxide gas can be dispersed to reduce the spiral steel decarburization.
SRT is a Group Company. Full name is Hebei Shengtian Group Reaguan Pipeline Co., Ltd, which mainly produce and export seamless steel pipes, spiral steel pipes, welded steel pipes and oil pipes . Our annual output is 150000 tons. We have variety of specialized Engineers 98 persons that can supply better, convenient and fast service to our clients.