Boiler seamless steel pipe Details
1) Coating 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 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 coating pipe:
Coating 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 structures,piling and other marine water.
2) Standard:
DIN 30670:Polyethylene coatings of steel pipes and fittings.
DIN30678:Polyethylene coatings of steel pipes and fittings.
SY/T0413-2002:Technical standard of polythene coating for buried steel pipeling.
3) Anti-corrosion coating:
Various steel pipe extemal coating projects are currently implemented by our company including single-layer/double-layer FBE,2PE,3PE,3PP and other anti-corrosion coating with the performed standards such as DIN30670,DIN30671,DIN30678,CAN/CSA-Z245.21-M92,SY/T4013-2002 and SY/T0315-97 ETC.
| Coating type | Coating layer | Coating thickness |
| Three layers polyethylene | Inside layer: epoxy(Green) | 2.0-4.5mm |
| Mid layer: adhensive(white) | ||
| Outside layer: polyethylene(black) | ||
| Two layers polyethylene | Inside layer: adhensive | 2.0-4.5mm |
| Outside layer: polythene | ||
| Epoxy | Epoxy | 200-400um |
| Two layers epoxy | Inside layer: epoxy(Green) | 400-800um |
| Outside layer: intensity epoxy(sage green） | ||
| Three layers polyethylene | Inside layer: expoxy(green) | 2.5-3mm |
| Mid layer: adhensive(white) | ||
| Outside layer: polypropylene(white) |
Types of anti-corrosion coating
1.FBE anticorrosive epoxy power.FBE epoxy preservative structure:electrostatic spraying epoxy 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 advantages.
2. 2PE/3PE corrosion:2PE/3PE corrosion structure: the steel surface electrostatic spraying epoxy power and binder twine lateral lateral wound polyethylene coating,combined with three excellent performance,there by significantly improving the overall quality of corrosion of the pipe.Resistant to chemical corrosion ,cathodic stripping,resistance to mechanical damage performance.
3 coal tar epoxy：Coal tar epoxy structure: epoxy resin + filler made of coal tar pitch anticorrosive coating on the steel surface coated glass fabric as reinforcenment corrosion layer formation,commonly used in the pipe wall corrosion.Thickness of 0.5~1.0mm.
