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 des enduits de tuyaux en acier
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.
La norme:
DIN 30670: Revêtements en polyéthylène de tubes en acier adn raccords.
DIN 30678: Polythylene coatiing of steel pipes and fittings.
SY/T0413-2002: Technical standard of polythelene coating for buried steel pipeline.
Types de revêtement anti-corrosion
types de corrosion des tuyaux sont divisés en corrosion externe et à la corrosion interne.
1. FBE anticorrosive epoxy powder
Structure de conservation de la poudre époxy FBE: la pulvérisation électrostatique
revêtement de poudre époxyde sur la surface du tube, un film. le revêtement
a une opération de revêtement est simple, propre, une bonne résistance aux chocs
et propriétés de flexion du revêtement, la résistance à la température
avantages.
2. 2PE/3PE corrosion
Structure de corrosion 2PE / 3PE: la électrostatique de la surface d'acier de pulvérisation
poudre d'époxy et d'un liant polyethylene ficelle enroulée latérale latérale
revêtement, combiné avec trois excellentes performances, ainsi de manière significative
l'amélioration de la qualité globale de la corrosion de la canalisation. Résistant aux produits chimiques
la corrosion, le décapage cathodique, de résistance au dommage mécanique.
3. Coal tar epoxy
Charbon structure époxy de goudron: résine époxy + filler constitué de brai de goudron de houille
un revêtement anticorrosif sur le tissu de verre revêtu en surface d'acier comme renforcement
formation d'une couche de corrosion, couramment utilisé dans la corrosion de la paroi du tuyau. épaisseur de 0,5 ~ 1,0 mm.
3PE Tailles de tuyaux en acier
| Type de revêtement | Couche de revêtement | Epaisseur de revêtement |
| polyéthylène trois couches | couche intérieure: époxy (vert) | 2.0-4.5mm |
| couche intermédiaire: adhensive (Blanc) | ||
| Outsidelayer: polyéthylène (Noir) | ||
| polyéthylène Deux couches | Couche intérieure: adhensive | 2.0-4.5mm |
| couche extérieure: polythène | ||
| époxy | époxy | 200-400um |
| Deux couches époxydes | couche intérieure: expoxy (vert) | 400-800um |
| couche extérieure: époxy d'intensité (vert sauge) | ||
| polyéthylène trois couches | couche intérieure: expoxy (vert) | 2.5-3mm |
DIN30670 pour trois couches extrudé et un ou des revêtements à base de polyéthylène fritté à couches multiples
DIN30671 revêtement de matière plastique thermodurcissable pour tubes en acier enterrées
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
Une couche / double couche FBE poudre de revêtement anti-corrosion (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.
