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.
被覆鋼管のアプリケーション
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.
標準：
DIN 30670：鋼管ADN継手のポリエチレンコーティング。
DIN 30678: Polythylene coatiing of steel pipes and fittings.
SY/T0413-2002: Technical standard of polythelene coating for buried steel pipeline.
防錆コーティングの種類
パイプの腐食タイプは、外部腐食及び内部腐食に分かれています。
1. FBE anticorrosive epoxy powder
FBEエポキシ粉体防腐構造：静電スプレー
パイプ表面上のエポキシ粉体コーティング、フィルム。 コーティング
コーティング作業が簡単で有し、クリーン、良好な耐衝撃性
コーティングの曲げ特性、耐熱性
利点。
2. 2PE/3PE corrosion
2PE / 3PE腐食構造：鋼表面の静電噴霧
エポキシ粉とバインダーひも横横創傷ポリエチレン
大幅三の優れた性能と組み合わせるコーティング、
配管の腐食の全体的な質を向上させます。 化学物質への耐性
腐食、陰極ストリッピング、機械的損傷のパフォーマンスへの抵抗。
3. Coal tar epoxy
コールタールエポキシ構造：コールタールピッチからなるエポキシ樹脂+フィラー
補強材としてスチール表面コーティングされたガラス繊維上の防食コーティング
一般にパイプ壁腐食で使用される腐食層の形成、。 0.5〜1.0ミリメートルの厚さ。
3PE鋼管のサイズ
| コーティングタイプ | 被覆層 | コーティングの厚さ |
| 三層ポリエチレン | 内側層：エポキシ（グリーン） | 2.0〜4.5ミリメートル |
| 中間層：adhensive（ホワイト） | ||
| Outsidelayer：ポリエチレン（ブラック） | ||
| 二層ポリエチレン | 層内側：adhensive | 2.0〜4.5ミリメートル |
| 外側の層：ポリエチレン | ||
| エポキシ | エポキシ | 200-400um |
| 二層エポキシ | 内側層：Epoxyの（グリーン） | 400-800um |
| 外層：強度エポキシ（セージグリーン） | ||
| 三層ポリエチレン | 内側層：Epoxyの（グリーン） | 2.5〜3ミリメートル |
三層押出して一次元または多層焼結ポリエチレン系塗料用DIN30670
埋設鋼管のためDIN30671熱硬化性プラスチック被覆
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
一つのレイヤー/ダブルレイヤーFBE抗腐食性コーティング粉末（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.
