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.
Aplicações de tubo revestido de aço
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 structures, piling and other marine water.
Padrão:
DIN 30670: revestimentos de polietileno de tubos de aço adn acessórios.
DIN 30678: Polythylene coatiing of steel pipes and fittings.
SY/T0413-2002: Technical standard of polythelene coating for buried steel pipeline.
Tipos de revestimento anti-corrosão
tipos de tubo de corrosão são divididos em corrosão externa e corrosão interna.
1. FBE anticorrosive epoxy powder
FBE estrutura de epóxi em pó conservante: pulverização electrostática
revestimento de epóxi em pó sobre a superfície do tubo, de um filme. o revestimento
tem uma operação de revestimento é simples, limpa, boa resistência ao impacto
e propriedades de flexão do revestimento, a resistência à temperatura
vantagens.
2. 2PE/3PE corrosion
2PE estrutura / 3PE corrosão: a superfície electrostática aço pulverização
epóxi em pó e o ligante cordéis laterais de polietileno ferida laterais
revestimento, combinado com três excelente desempenho, assim significativamente
melhorar a qualidade geral da corrosão do tubo. Resistente a química
corrosão, decapagem catódica, a resistência ao desempenho danos mecânicos.
3. Coal tar epoxy
Carvão estrutura alcatrão epoxi: resina epoxi + enchimento feito de pez
revestimento anticorrosivo sobre o tecido de vidro superfície de aço revestido como reforço
formação da camada de corrosão, vulgarmente utilizados na corrosão da parede do tubo. espessura de 0,5 ~ 1,0 milímetros.
3PE tamanhos de tubos de aço
| Tipo de revestimento | camada de revestimento | Espessura do revestimento |
| Três camadas de polietileno | camada interior: de epóxi (verde) | 2.0-4.5mm |
| camada média: adhensive (Branco) | ||
| Outsidelayer: polietileno (Black) | ||
| Duas camadas de polietileno | Dentro camada: adhensive | 2.0-4.5mm |
| camada exterior: polietileno | ||
| Epóxi | Epóxi | 200-400um |
| Duas camadas de epóxi | camada interior: expoxy (verde) | 400-800um |
| camada exterior: epoxi intensidade (verde prudente) | ||
| Três camadas de polietileno | camada interior: expoxy (verde) | 2.5-3mm |
DIN30670 por três camadas extrudido e uma ou várias camadas de revestimentos à base de polietileno sinterizados
DIN30671 revestimento termoendurecível plástico Para tubos de aço enterrado
DIN30678 polypropylene coatings for steel pipes
CAN/CSA Z245.20/-Z245.21-02 external fusion bond epoxy coating for steel pipe/external polyethylene coating for pipe
SY/T4013-2002 for transport water, gas, oil,piling coating
SY/T0315-97 PE coating for buried steel pipe
Uma Camada / Camada Dupla FBE anti-corrosivo de revestimento em pó (200um ~ 800um)
3PP (Polypropylene) Coated Steel Pipe
DIN30678 standard technical specification for polypropylene coating for steel pipe and pipe fittings
3PP Coating Advantages:
The 3PP coated steel pipe refers to steel tubing with three layers of PP(Polypropylene) coating. It offers high electric strength, acid resistance, alkali resistance, salt-tolerance, electric insulation, long service life, thermal endurance and impact resistance. Because of advanced steel pipe coating technology, this type of plastic coated steel pipe features well-bonded coatings.
3PP Coating Applications:
The 3PP coating steel pipe is suitable for transferring special materials, such as high temperature materials, because it offers high electric strength, acid resistance, alkali resistance, salt-tolerance, electric insulation, long service life, thermal endurance and is impact resistant.
FBE Coated Steel Pipe
FBE coating pipe is Fusion Bonded Epoxy coating steel pipe. It is an externally applied heat resin for pipe. With a form of dry powder at thickness 300-600 microns on to the heated surface of pipe. Once the FBE coated on the pipe surface, the FBE film provides an extremely hard surface with great adhesion to the pipe surface. The FBE layer in a even form and have good resistance to the chemical reaction.
Polyurethane Insulation Coating Steel Pipe
The polyurethane direct buried heat preservation pipe is a direct buried preheating heat preservation pipe with good heat preservation performance, safety and reliability, and low engineering cost. The buried thermal insulation pipe not only has the advanced technology and practical performance that is difficult to compare with the traditional trench and overhead laying pipeline, but also has obvious social and economic benefits, and is also a powerful measure for heating and energy saving.
It is characterized by a multi-purpose use to prevent the spread of fire and good fire safety performance. Black jacket insulation pipe includes spiral steel pipe, straight seam steel pipe and seamless steel pipe. The outer layer is made of black polyethylene and is called a black jacket insulation tube.
