Implement standards and specifications:
GBJ 50205 Construction and acceptance of steel structure engineering
GB3095-82 Mandatory air pollutants emission standards
SY/T 0315-0315 External FBE coating technology standard of outer wall of buried steel pipe
SY/T 0420-02 External wall of poly (PVC wrapping)Technology standard of buried steel pipe
GB16297-1996 Air pollution comprehensive discharge standards
GB12348-90 Standard of noise at boundary of industrial enterprises
JB/T 8355-96 General technical conditions of shot blasting equipment
SY/T 0407-97 Steel surface pretreatment before coating application
GB/T8923-1998 Steel surface corrosion level and rust cleaning level before coating
GB/T15607-95 Coating work safety specifications, electrostatic powder spraying process safetyDescription:
3PE anti-corrosion coating production line means the steel pipe is protected by three layer to prolong the life of use from 5-10years to 50-100years.
First layer is Fusion bonded epoxy layer (FBE> 100µm), the second layer of adhesive (AD) 170 ~ 250µm, the third layer of polyethylene (PE) 2.5 ~ 3.7mm. Present we can made the machinery for diameter range Φ159 ~ Φ1220.
3PE steel pipe outer coating has a high mechanical strength, excellent electrical insulation performance. The merits include high degree of mechanization, process parameters stable, not pollute the environment, etc. In recent years, the intensive of the pipeline corrosion engineering has been widely used.Application:
The three-layer PE process, with the epoxy powder coating as bottom layer, binding and bundling through polyethylene PE and adhesive, is widely used in anticorrosion of steel pipes at home and abroad, and applied to the oil pipeline and gas pipeline, as well as to the gas supply and water supply for civil use.Three-Layer PE pipe Structure Diagram
The three-layer PE anticorrosion structure includes fusion bonded epoxy-powder bottom layer, polymer adhesive middle layer and polyethylene top layer. The epoxy powder is a kind of thermosetting nontoxic coating, forming the high molecular weight cross-linking structure coating after solidifying, featuring good chemical anticorrosion and higher mechanical properties. The function of epoxy powder bottom layer is to form continuous coating, providing excellent adhension by agglutinate and solidifying the steel tube surface with good chemical resistance and cathodic disbanding resistance. The function of polymer adhesive is to agglutinate the epoxy powder before gelation, and to agglutinate the polyethylene top layer, which unites all three layers together.