Buried steel pipes are exposed to a complex underground environment: not only must they withstand moisture, salts, acid and alkali corrosion, and microbial attack in the soil, but they must also endure impacts from backfill soil and rock, as well as soil shear forces caused by te ...

In the pipeline engineering industry, there is a widely circulated saying: “There are only two kinds of pipelines in the world: those that have already corroded and those that are currently corroding.”As a pipeline engineer or project manager, designing a comprehensive internal a ...

Municipal water supply projects are the “lifeline” that keeps cities running. In such projects, carbon steel pipes have become the standard material for large-diameter water transmission trunk lines due to their high pressure-bearing capacity and good toughness. However, if carbo ...

In municipal drinking water and industrial fluid transportation projects, the choice of pipeline corrosion protection directly determines the safety and service life of the project. In drinking water projects, the greatest concerns are toxic coatings and bacterial growth; in indu ...

In municipal water supply and long-distance water conveyance projects, steel pipes are the most widely used piping material because they are sturdy, durable, and capable of withstanding high pressure. However, when buried underground or exposed to constant water flow over long pe ...

In underground steel pipeline projects, anti-corrosion coatings serve as the first line of defense against soil corrosion and are key to extending the service life of the pipelines. Given the complex nature of the underground environment—which involves multiple challenges such as ...

In projects such as long-distance water conveyance, oil and gas transmission, and municipal pipeline networks, selecting the right pipeline corrosion protection technology has always been a key factor in determining project quality and service life. There are three common types o ...

When faced with long-distance water supply, natural gas transmission, or industrial wastewater discharge projects, buyers are primarily concerned with two things when selecting pipe materials: first, they want to avoid rust and leaks that require constant digging and repairs; sec ...

In large- and medium-scale pipeline network projects, such as water and gas transmission systems, pipelines are buried underground and face two major challenges: internal erosion caused by the constant flow of fluids day and night, and external damage from the combined effects of ...

In underground pipeline projects, 3PE anti-corrosion steel pipes are hailed as the “stainless steel coating” for pipelines because they combine the strong adhesion of epoxy powder with the tear resistance and corrosion resistance of polyethylene.However, in actual underground pro ...

When selecting products, many engineers tend to focus solely on the temperature and pressure resistance of the steel pipe itself, while overlooking the “temperature limit” of the outer anti-corrosion coating. Based strictly on leading domestic and international standards, this ar ...

3PE-coated steel pipe has become the standard solution for protecting buried pipelines against soil corrosion. However, industry professionals often say, “Thirty percent depends on the coating, seventy percent depends on construction.” In real-world projects, the coating is rarel ...

I. Tendering and Technical SpecificationsTo secure contracts with the lowest bid, some coating manufacturers cut corners by using inferior raw materials or simplifying production processes. To minimize quality risks, the following requirements should be clearly specified in the t ...

The 3PE anti-corrosion coating system (Fusion Bonded Epoxy + Adhesive + Polyethylene) is widely regarded as the “king of corrosion protection” for buried pipelines. However, achieving a true 50-year design life depends entirely on strict control during the manufacturing process. ...

I. Applicable Standards for 3PE Coated Steel PipesAs 3PE technology originated in Europe and is now widely adopted worldwide, oil and gas projects typically specify one or more of the following mainstream standards depending on project location and client requirements:1. Chinese ...