Coated steel pipe means the pipe that is by the processing after
the corrosion, which can effectively prevent or slow the steel pipe
occurs in the course of transport and chemical or electrochemical
reaction corrosion phenomena. Coated steel pipe can effectively
prevent or slow down the corrosion of steel pipes to extend service
life and reduce operating costs pipe.
Applications of coated steel pipe
coated steel pipe base metal is including spiral, straight seam
pipe, seamless steel pipe, etc, which are widely used in pipeline
projects in the field of petroleum, chemical, natural gas, heating,
sewage treatment, water, bridges, steel structure, pilling and
other marine water.
DIN 30670: Polyethylene coating of steel pipes and fittings.
DIN 30678: Poly3thylene coating of steel pipes and fittings
SY/T0413-2002: Technical standard of polyethylene coating for
buried steel pipeline.
Pipe corrosion types are divided into external corrosion and
Types of anti-corrosion coating
Mainly type for anti-corrossion:
1. FBE anticorrosive epoxy powder
FBE epoxy powder preservative structure: electrostatic spraying
epoxy powder coating on the pipe surface, a film. The coating has a
coating operation is simple, clean, good impact resistance and
flexural properties of the coating, temperature resistance
2. 2PE/3PE corrosion
2PE/3PE corrosion structure: the steel surface electrostatic
spraying epoxy powder and binder twine lateral wound polyethylene
coating, combined with three excellent performances, thereby
significantly improving the overall quality of corrosion of the
3. Coal tar epoxy
Coal tar epoxy structure: epoxy resin+ filler made of coal tar
pitch anticorrosive coating on steel surface coated glass fabric as
reinforcement corrosion layer formation, commonly used in the pipe
wall corrosion thickness of 0.5-1.0mm.