Standard cement septic tanks is the use of special steel mold steel through a variety of customized, advanced technology welding process is completed, each set change pits steel molds are made of the same three circular ring and a cover consisting of a basic conventional molds are the same size, an internal diameter of 2 m, an outer diameter of 2.3 meters, whether round or square installation steps are the same, in order to save additional human and material resources with the good, each section the bottom of the septic tank steel mold has a corresponding bolt holes in the reserve, as is better to let each section connected together for neat precast concrete work. 5.7 For more information please visit the company's official website http://www.qzsngmj.com, we would like the most advanced production equipment, strong technical force, first-class product quality, improve service and dedication to working with you create brilliant. Address: Qingzhou Qingzhou City 309 State Road 400 kilometers Tel (Fax): 0536-3825100 Contact: Manager Wang Mobile: 13864680737