The KSA120-220L double R-ring chemical drum large blow molding machine produces a drum body with thickened design and segmented plastic reinforcement at the bottom of the drum. The reinforcement rib design makes the hollow blow molding machine product more solid, load-bearing, and durable. It uses new PP plastic (polyethylene) that is non-toxic and harmless, has a good hand feel, good chemical stability, and can withstand most acid and alkali corrosion. Not suitable for other solvents at room temperature, with low water absorption and good electrical insulation. Can withstand temperatures ranging from -7 ℃ to 100 ℃.