Anti-corrosion steel pipe is processed through the preservation process, which can effectively prevent or slow down the corrosion process in the transportationor the chemical or electrochemical corrosion reaction of steel pipe in service. Generally, anti-corrosion steel pipe is mainly usedfor a variety of applications such as petroleum, chemical, gas, heat, sewage treatment, water, bridges, and other engineering fields.
Hot dipped galvanized steel pipe is very popular with people and has been widely used for various applications today, such as indoor and outdoor atmospheres, the storage of hundreds of different chemicals, in fresh water, sea water, soils, concrete, or extreme temperatures. The zinc of the hot dipped galvanized coating is more corrosion resistant than bare iron and steel. Similar to steel, zinc corrodes when exposed to the atmosphere. However, zinc corrodes at a rate approximately 1/30 of that for steel. Also like steel, zinc corrodes at different rates depending on its environment. Therefore, the performance of hot dipped galvanized steel pipes varies from environment to environment.
Stainless steel pipe is another important “anti-corrosion” pipe in the market. In general, stainless steel has a range of benefits for the practical purposes, such as the hygienic properties,anti-corrosion and low maintenance. Also, it is considered an attractive choice when considering the life cycle cost of an installation. Stainless steel does not require painting and blends in well with modern interior design. It is also regarded as a fully recyclable material in use. Stainless steel pipe is an ideal choice for your next project, when you consider much more about health &safety issues in the applications. However, its steel pipe price seems a little high than other ordinary steel pipes in the market.
Concerning pipeline system, corrosion protection of pipelines is generally accomplished by a combination of cathodic protection and protective coatings. The coatings provide a barrier to the environment and the cathodic protection protects damage sites in the coatings. For instance, galvanized coatingis such a typical coating application for pipelines today. Commonly, it is believed that the main site of external corrosion on pipelines is the joint area which is coated in the field. Especially the junction between different types of pipe sections is more subject to corrosion due to the heat affected zone near the weld or the complexity of the joint system. As a result, more and more steel pipe manufacturers pay more attention to coating application for the joint area of the pipelines in advance in a mill.