Products Bellows refers wrinkled piece foldable telescopic folding direction along the tubular elastic sensing element is connected into. It is fixed to the open end, the end seal in a free state, and the auxiliary coil spring or springs to increase flexibility. When working under the effect of the internal pressure of the elongation along the longitudinal direction of the tube, the movable end of a displacement of the pressure generated in a certain relationship. Events end led to a direct indication of the size of the pointer pressure. Often in combination with bellows together forming the output of the displacement sensor is a pressure sensor power is sometimes used as a spacer element. Since the corrugated tube requires a larger volume change stretch, so it is lower than the response speed of the Bourdon tube. Bellows suitable for measuring low pressure. The main characteristics of the material we produce steel bellows are required a very high demand. However, in general the material needed can be as long as the following conditions: a material must have the desired very good ductility, it is a good elastic properties and processing of steel bellows, and with the subsequent processing to obtain more flexibility and the required strength. 2 material must have a tensile strength and fatigue strength, which can ensure the normal functioning of elastic function. 3 have a strong soldering ability, and also to meet the requirements needed for welding. 4 is an elastic material having a main reason, because of the time and temperature of steel bellows often affected by the time. Materials needed 5 must have sufficient corrosion resistance, ensuring the life and safety of steel bellows in engineering among. Summarized above 5:00 is the production of steel bellows basic materials owned by the requirements under section will introduce you other instructions corrugated culvert long life: the corrugated steel pipe culvert is the use of hot-dip galvanized steel, so life long life of 100 years, when used in corrosive environments particularly large, the use of steel bellows attached to the inner and outer surfaces of the asphalt layer, can be increased to about 20 years in the life of the original foundation. Convenient transportation: weight steel bellows only one tenth of the same caliber cement pipe to fifth, even in narrow spaces no transport equipment, labor can also be transport. Construction is simple: use a sleeve or flange bellows connected, and because you can (up to 6m) can operate even unskilled construction with a small amount of manual operation can be completed in a short time according to need custom lengths, namely fast and convenient. High strength: because of its unique corrugated structure, above which the compressive strength of cement ratio with the diameter of the tube 15 times. Excellent economic characteristics: simple connection can shorten the duration transaction instructions cheap! Free installation!