Contact: 15933187015 QQ2867376454 Hengshui City Value Optical Engineering Rubber Co., the predecessor of Taocheng scale light Rubber Products Factory, the company specializes in the production of a bridge with a prestressed corrugated plastic pipe, prestressed corrugated metal pipe, ultrasonic test tube (Acoustic tube), anchor bolts embedded corrugated tube, pipe, flat tube, rubber ...... specification is complete quality assurance! The company has passed ISO9001: 2000 international quality system certification, the products are widely used in bridges, roads, concrete works! Performance analysis is applied to the plastic bellows-tensioned concrete structures being, as the tendon into the hole pipe, corrugated plastic pipe which generally have the following properties:?? (1) to improve corrosion resistance and to improve the tendons protection. Metal bellows do not have a permanent corrosion resistance, and high-density polyethylene or polypropylene production bellows can provide long-term corrosion protection to the tendons. ? (2) plastic corrugated pipe friction coefficient with respect to the metal bellows smaller. Low friction coefficient can mean little more effective prestressing loss or stress, which is particularly advantageous for long tendons and ring beam structure, and therefore may reduce the amount of tendons, in order to reduce costs. ? (3) has a high strength and stiffness, and not easily deformed, easy to be crushed, not easy to rust, and long storage time characteristics. ? (4) has a good workability, good for easy installation and provides fixed, not easily broken vibrator vibration, making the joint firm. ? (5) a good seal can create the conditions for the use of vacuum-assisted grouting. ?