After the patent technology of the first domestic initiative continuous winding FRP pipe machine, Qingdao Longtech Machinery Co., Ltd. has successfully developed the new wet sand adding continuous winding FRP pipe technology through the constantly researching and upgrading. The new technology takes full advantage of wet sand adding technology elements and make the dynamic integration with the techniques on wet sand adding system and continuous winding FRP pipe process, for ensure reaching various performance indicators premise, it can reduce cost up to 30%-40%. The technology has been declared national invention patent, and the technology has been accredited by experts in composite field who reach consensus. The item has been achieved the international advanced level.