Sleeve type compensator sub-way and two-way type compensation structure type is characterized by two-way regardless of what the media from the compensator end inflows, which compensates for both ends of the sliding sleeve is always free to slide, heat pipes compensation, to make up a two-way effect compensator wholesale increase to make up for the amount. A two-way compensator sleeve, the left end of the casing 2, the left end of the core tube 5, the right end of the sleeve 25, the right end of the core tube 23, the left end of the inner ring 4, the left end of the outer ring 8, the right end of the ring 26, the right end of the outer seal and connecting ring 24 constituting the fastener, wherein: the left sleeve and the left end of the inner circle of the core tube 2 have a tapered annular space between the outer sides of the projections 5, the right end of the sleeve 25 also have a tapered annular space between the cylindrical internal projections and right sides of the core tube 23, within their respective tapered annular space, Sichuan compensator, respectively, provided with its relative within an annular tapered matching the left ring 4, the left outer ring 8, the inner ring 26 right, right outside the ring 24. Bellows material shall meet the following conditions: high elastic limit, under normal circumstances. Tensile strength and fatigue strength, in order to ensure that the bellows work. Good plasticity to facilitate the bellows molding, and through subsequent disposal (work hardening, heat treatment, etc.) in order to obtain sufficient hardness and strength. Good corrosion resistance, in order to meet the bellows in a different environment. Wear compensator, Serco supply material (certified), Sichuan compensation provided by Serco Gongyi City Water Supply Materials Co., Ltd. Gongyi City Water Supply Materials Co. Serco (www.gyxjbcq.com/) is Zhengzhou, gate leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Serco supply material in leadership with the staff warmly welcome all inquiries negotiations to create Serco supply material better future.