This standard specifies the classification, technical requirements, test methods, inspection rules, marking Encasement, storage and transportation of polyethylene (PE) polypropylene composite waterproof membranes. It is suitable for waterproof membranes made by one-time compounding with polyethylene (PE) and high-strength polypropylene non-woven fabrics as the main raw materials, adding polymer raw materials such as color masterbatch and anti-aging agent. Classification includes type I and type II. Specifications include length, thickness, width, etc., and the marking is carried out according to the product name, type, thickness, length multiplied width and standard order. Technical requirements include dimensional deviation, etc.