Fabricated drainage pipeline for building construction

The utility model relates to the technical field of drainage pipelines, in particular to an assembled drainage pipeline for building construction, which comprises a pipeline body, one end of the pipeline body is slidably sleeved with a connecting sleeve, and the other end of the pipeline body is slidably connected with a slider. A limiting lug is arranged on the connecting sleeve, and a fixing bolt matched with the limiting lug is arranged on the sliding block; the two pipeline main bodies are assembled and connected through the limiting lugs and the fixing bolts inserted into the limiting lugs, and the fixing bolts are in threaded connection with nuts; the two pipeline main bodies can be conveniently and rapidly aligned through the connecting sleeve, the sliding block and the connecting sleeve slide and rotate, the fixing bolt penetrates through the limiting lug, then the nut is tightened, and the purpose of rapid and accurate butt joint is achieved; and the pipeline main bodies are easy to mount and dismoun