PSL Limited offers Concrete Weight Coating for Pipes. PSL Limited, an ISO 9001:2000 & ISO 14001:2004 registered company that manufactures various types of steel pipes, pipe mills and machinery as well as anticorrosive coating of steel pipes. The Concrete Weight Coating for Pipes is applied on the entire outer surface of the pipe up to a specified thickness. The Concrete Weight Coating for Pipes is applied at a high velocity against the external surface of the pipe to produce a hard, tight-adhering coating of specified thickness and simultaneously wire -meshed.