Manufacturing method of formula process of ultra-high hardness thermal insulation pipe

摘要: The invention belongs to the technical field of pipeline manufacturing, and particularly relates a manufacturing method formula process an ultra-high hardness thermal insulation pipe. pipe comprises steps 1, pouring inner raw materials; 2, cooling demoulding cast pipe; 3, polishing demolded steel 4, preparing layer stock solution, adding balls into carrying out uniform stirring; 5, injecting solution outer wall pipe,and waiting for demoulding; 6, shell, melting wire mesh polyethylene protective layer; 7, sleeving with manufacturedshell; therefore can be in use. Hard metal is added shell secondary fixing, integral improved on premise that not influenced, situation damaged under impact foreign objects effectively reduced, service life prolonged, heat convenient