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.
Aplicaciones de tubería de acero recubierto
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.
Estándar:
DIN 30670: revestimientos de polietileno de tubos adn accesorios de acero.
DIN 30678: Polythylene coatiing of steel pipes and fittings.
SY/T0413-2002: Technical standard of polythelene coating for buried steel pipeline.
Tipos de recubrimiento anti-corrosión
tipos de corrosión Pipe se dividen en la corrosión externa y la corrosión interna.
1. FBE anticorrosive epoxy powder
FBE estructura epoxi polvo conservante: pulverización electrostática
revestimiento de polvo epoxi en la superficie del tubo, una película. el recubrimiento
tiene una operación de recubrimiento es sencillo, limpio, buena resistencia al impacto
y propiedades de flexión del revestimiento, resistencia a la temperatura
ventajas.
2. 2PE/3PE corrosion
estructura / 3PE corrosión 2PE: la electrostática superficie de acero pulverización
polvo de epoxi y polietileno herida lateral aglutinante cordel lateral
recubrimiento, en combinación con tres excelente rendimiento, de ese modo significativamente
la mejora de la calidad general de la corrosión de la tubería. Resistente a la química
la corrosión, el decapado catódico, la resistencia al rendimiento daños mecánicos.
3. Coal tar epoxy
Carbón estructura alquitrán epoxi: resina epoxi + relleno hecha de brea de alquitrán de carbón
recubrimiento anticorrosivo en el tejido de vidrio recubierto de superficie de acero como refuerzo
formación de la capa de corrosión, que se utiliza comúnmente en la corrosión pared de la tubería. espesor de 0,5 ~ 1,0 mm.
3PE acero Tamaños de tuberías
| Tipo de recubrimiento | capa de recubrimiento | de espesor de revestimiento |
| Tres capas de polietileno | capa interior: epoxi (verde) | 2.0-4.5mm |
| capa mediana: adhensive (blanco) | ||
| Outsidelayer: polietileno (Negro) | ||
| Dos capas de polietileno | En el interior de la capa: adhensive | 2.0-4.5mm |
| Capa exterior: polietileno | ||
| Epoxy | Epoxy | 200-400um |
| Dos capas epoxi | capa interior: expoxy (verde) | 400-800um |
| Capa exterior: epoxi intensidad (verde salvia) | ||
| Tres capas de polietileno | capa interior: expoxy (verde) | 2.5-3mm |
DIN30670 para de tres capas recubrimientos sinterizados a base de polietileno extruido y de una o de varias capas
DIN30671 revestimiento de plástico termoestable para tuberías de acero enterrados
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
Una capa / doble FBE capa de polvo de revestimiento anti-corrosivo (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.
