Where there are full immersion of acid solution environments such as drains, sumps and wet bunded areas HDPE linings can provide a cost effective solution to the concrete protection. With our welding completed by trained and certified welders the crucial step of durable, fully fused welds is addressed. AB Chem can prefabricate HDPE sumps that can be placed and mechanically anchored during civil construction or alternatively retro fitted and mechanically anchored by grouting.