The reason why the porous grille pipe is called porous is because it has multiple holes. The porous grille pipe includes single-hole grille pipe, four-hole grille pipe, five-hole grille pipe, and six-hole grille pipe. Hole grid tubes, nine-hole grid tubes, seven-hole honeycomb tubes and more holes and other types of grid tubes. The porous grid communication directly buried pipe produced by Hangzhou Wantong Plastic Co., Ltd. is a new type of optical cable sheath pipe. It integrates the sheath and the sub-tube. It is extruded in one step and has a beautiful shape. It is made of PVC engineering plastics and has high compressive strength. It is a tube with light weight, long service life, smooth inner wall, low friction, easy construction, and can resist external forces to protect light and cable functions. The effective space is large, which is convenient for the routing, isolation and protection of optical cables. The product has obvious advantages such as improving work efficiency, saving costs, easy installation, stability and reliability. It is widely used in basic projects such as optical fiber communications, cable TV, and power cable multimedia transmission. It is a new and practical supporting product for photoelectric communication facilities.