What are the characteristics and production process of hinged corrugated compensator

The hinged corrugated compensator can be passivated with oxidizing agents, forming a layer of tough and fine chromium-rich oxide maintenance film Dr2O3 on the exterior, which is useful for blocking the further onset of oxidation reactions. And other metal pipes, such as galvanized water pipes, copper pipes passivation ability is very small, which is the hinged corrugated compensator copper pipe corrosion resistance is far less than the hinged corrugated compensator pipe key reason. The choice of hinged corrugated compensator water pipe, there is no constraint on the chemical composition of the water, because the hinged corrugated compensator in a variety of oxygen content, temperature, PH and hardness of the water have very good corrosion resistance; hinged corrugated compensator water pipe can satiate a very high flow rate.
Even if the flow rate is greater than 40 m/s, it still insists on low corrosion rate, not exceeding 0.003 mm/year, especially suitable for building water supply. The thermal conductivity of hinged corrugated compensator pipe is 1/25 of copper pipe and 1/4 of general hinged corrugated compensator, which is especially suitable for hot water transportation. The hinged corrugated compensators often used in the water industry are 304 and 316 hinged corrugated compensators, which can meet most of the water treatment and transmission off conditions. In the case of being touched by external forces, the hinged corrugated compensator water pipe leakage is small, the working pressure of the building water supply system is generally greater than 0.6Mpa; the pipe pressure requirements are high. The hinged corrugated compensator pipe can accept very high water supply pressure, up to 10Mpa or more, because of the mechanical function, especially suitable for building water supply. Hinged corrugated compensator material lifting, can not directly touch with other metals, should be padded with non-metallic materials such as wood or rubber sheet. Multi-layer welding arc start and arc close should be staggered from each other.
 
Hinged corrugated compensator material is welded one after another, the temperature between the layers does not exceed 60 ℃. The weld at the pipe joint weld, after welding, should be pickled and passivation treatment. Hinged corrugated compensator tube heat treatment abroad throughout the use of five oxidation with maintenance gas continuous heat treatment furnace, heat treatment in the production process and the final product heat treatment, due to the ability to obtain a bright appearance without oxidation, and then cancel the traditional pickling process.
The selection of this heat treatment process improves the quality of the hinged corrugated compensator and overcomes the pollution of the environment by pickling. Hinged corrugated compensator requires deep welding penetration, no oxide doping, heat-affected zone as small as possible, tungsten inert gas maintenance of argon arc welding has good adaptability, high welding quality, good weld penetration performance, its products are widely used in the chemical, nuclear and food industries.