Bellows: Pressure measuring instruments in one load elastic element. It is a cylindrical thin wall having a plurality of transverse corrugations of the wrinkles of the casing, the bellows having elasticity, under pressure, an axial force, lateral force or bending loads can be displaced. Bellows widely used in instrumentation, the main use is as a measuring element pressure measuring instruments, will be converted into the displacement of the pressure or force. Pe thin wall corrugated pipe bellows, high sensitivity, the measurement range of tens to hundreds of MPa Pa. Also prestressed bellows, bellows can be used as a sealing element isolation, the two media separated or prevent hazardous fluids into the measurement portion of the device. Variability compensative instrumental error it can be used as a temperature compensating element, with its volume. Sometimes used as two parts of elastic coupling joints. Bellows can be classified according to the constituent material of metal bellows, two kinds of non-metallic bellows; according to the structure can be divided into single and multiple layers. Single bellows (see figure) more often. Multilayer Bellows high strength, durability, low stress, with the important measurements. Bellows material is generally bronze, brass, stainless steel, Monel and Inconel alloy Seoul. External Pressure ability annular wall corrugated structure, greatly enhancing the pipe ring stiffness, thus increasing the load on the soil pipe resistance, in this performance bellows, HDPE double wall corrugated pipe and tubing compared to other obvious advantage. Under the project, such as load, low cost in terms of the bellows manufacturer, HDPE double wall corrugated pipe requires only a thin wall to meet the requirements. Therefore, compared with the same material specifications solid wall pipe, can save about half of the raw material, so HDPE double wall corrugated pipe cost is low. This is also a very prominent feature of the pipe. Double-wall corrugated pipe, Xiong Yu-tai (certified), Tai'an bellows provided by Xiong Yu Thai plastic products factory. Xiong Yu Tai Plastic Products Factory (www.taiyusuye.com) Hebei Baoding, UPVC pipe leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Xiong Yu-tai in leadership with the staff warmly welcome all inquiries negotiations to create Xiong Yu-tai a better future.