Construction hanging large diameter steel pipe lined with cement mortar corrosion wholesale price of cement mortar in two ways. First floor centrifugation. Mainly in pipes lined with suitable construction DN400 caliber or less. But ground spraying, mainly applied to more than DN700 diameter underground pipeline corrosion construction. Cement mortar lined with metal pipes were two kinds of material, mortar binding force how the pipeline? In particular, whether the inner pipe coating will fall off in the transportation, installation and other external force? That is how the mechanical strength? According to foreign experimental data to prove its mechanical strength. Pipe in flattening deformation under external pressure, the mortar will have a "hairy" crack, but peeling mortar from the wall is very difficult, in the DN800 mm diameter steel pipe wall thickness of 7.1 mm, the interception of a meter long The pipe section is coated lining 11 mm mortar coating thickness, 7-8 mm when flat amount, you can see a "hairy" cracks. When the flat amount to 50 mm, the crack gradually increased to edge the whole pipe sections, the experimental results have a "hairy" crack pipe diameter 1% of the amount of the flat, when flat amount of 6-9% of cases, mortar coating peeling crack at the beginning, to the diameter of 30%. This construction is never allowed to happen. It is measured on the DN1100 pipes, the minimum flat amount of 15 mm, 21 mm on the DN1800 pipe. Thus, the diameter increases, resulting in a flat cracks also increased the amount of Hebei Yanshan Hing Industry Co., Ltd is a large steel pipe manufacturers, the company specializes in producing 3PE anti-corrosion steel, coal tar epoxy anti-corrosion steel , IPN8710 anti-corrosion steel, cement mortar lining anti-corrosion steel, steel jacket steam pipe insulation, polyurethane foam pipe insulation, steel-plastic composite pipe, galvanized steel pipes and various anti-corrosion pipe insulation prefabricated for supporting the use of steel pipe.