Abstract:  The weight coating of submarine pipeline is commonly sprayed with high density concrete material. The compressive strength of the weight coating plays a very important role to ensure the pipeline to be safely laid. Taking a submarine single-layer insulation pipe-lay project in Bohai area as an example, we check the compressive properties of pipe materials by using crushing test method, inspect the function of each layer structure in the crushing test process, and evaluate the capacity of weight coating resisting the tensioner clamping force, so as to provide instruction for the offshore installation.