Linen tube collection pipe system (also known as dirty clothes well, dirty linen, blanking wells) is the use of object weight for vertical transmission pipe attached to a building for the transmission of parcels a good dirty clothes, dirty sheets, dirty tablecloths to wait until underground temporary. Floors need to transfer the set to put in the mouth, to a level above the top level of the vertical pipe or side wall equipped with a snorkel, if necessary, set up a strong exhaust system and set up the elbow or outdoor rain cover, located at the bottom adjustable buffer tube and automatic fire door. System piping in addition to the outside of the stent, and the remaining are used austenitic stainless steel. Flashlight with automatic argon gas shielded arc welding, weld strength and appearance of smooth, dirty clothes well pipe is smooth and not linked to fiber. Ensure input from the delivery port of any layer of dirty clothes well, collect the mouth end of the pipe in the basement can be smooth and automatic outflow pipe outlet, using spinning molding strengthen the process, the cylinder strength increased 2.5 times to protect the pipeline have sufficient impact resistance. 
 Pipelines in various parts of the support made from carbon steel, and take a hot dip galvanized anti-corrosion measures to ensure long-term does not rust. The flange clamp flange connection, the connection is smooth, easy to install, no need to polish processing, to avoid pipe corrosion; all the components are prefabricated in the factory, shape, size standards, on-site installation convenient, fast; at the exit to do to strengthen the protection of buffering angle measures to ensure that the buffer effect. Life of dirty clothes well vertical pipe of not less than 30 years, and have sufficient stiffness and strength to ensure that the pipeline to sustain its long-term effective impact at the highest level of throwing dirty clothes well, will not undermine the stability of the system due to vibration, and does not produce a resonance, set pipe at the bottom of the buffer tube to prevent heavy objects fall wounding basement with goods exports and set to automatic fire doors. Closed to prevent the chimney effect, safety design structure to prevent bacterial cross-infection to eliminate the psychological impact of unsanitary.