Adopt and import high-quality material production, the variety is complete in specifications, meet the pressure demand of the pipe network , the inboard wall is smooth, obstruction is small.

Heat melts the principle of connecting : It is hot to melt and join the daily connection to the pipe fittings of the heavy-calibre , is generally greater than 110mm. Is it get two end or between the pipe fittings , heat regular hour to put certain heating board of temperature, take out and heat the board, connect both ends already welded together rapidly under certain normal atmospheric temperature, keep the interface cooling in several minutes. In this way the interface that the intensity is higher than the intensity of pipe noumenonn takes shape.