Epoxy coal tar anti-corrosion pipe


Process 

1, the material 2, extrusion 3, die 4, cool 5, traction 6, the inner surface corona treatment 7, cutting 8, testing nine and finished products 


A. polyethylene pipe easy to aging, such as open storage suitably covered with tarpaulin and other items, stacking Department should stay away from high heat and fire sources, made of insulated pipe, the prohibition of exposure, sudden cold, or polyethylene pipe easy to crack, impact product performance and service life. 

B. Transport and wear control process, should avoid rough handling, hook too small, excellent, excessive force, otherwise, could easily lead to polyethylene pipe broke, scratched, or torn. 

C. adjustable pipe wall thickness, wall thickness, color according to user requirements production, due to pipe wall thickness of different insulation thickness of about the number of actual thickness should be calculated. 

D. and the pipe supporting bracket, plastic plugs, 2 flange, welding rods, welding torch, heat-shrinkable tape and so complete. 

E. The allowable deviation in the table are based on industry standards CJ/114-2000. 

Calculated as follows: OD ≤ 400mm, the upper and lower deviation, and = 0.1 × of the nominal wall thickness of +0.2 

Diameter ≥ 400mm, the upper and lower deviation = 0.15 × the sum of the nominal wall thickness of +0.2