many friends who do municipal drainage and environmental protection projects often ask: "Is PE spiral corrugated pipe a special equipment?" After all, material compliance directly affects the acceptance of the project, and this question has to be clarified. Today we will explain the answer from the two dimensions of "legal definition" and "actual attributes".

First of all, it is clear: what is "special equipment"? According to the "Special Equipment Safety Law of the People's Republic of China", special equipment is equipment that poses a greater risk to personal and property safety, including boilers, pressure vessels, pressure pipes, elevators and other eight categories. The core key word is "greater danger" - either high pressure (such as boilers), medium danger (such as flammable gas pipes), or public safety (such as elevators).

Look at the PE spiral corrugated pipe again: it is made of polyethylene, through the spiral-formed plastic pipe, the main municipal drainage, sewage collection, rainwater drainage. Its working state is very "mild": either "gravity flow" (by the weight of water flow, such as community sewers), or "low pressure transportation" (such as the sewage pump after the pipeline, the pressure is usually 0.1MPa), the medium is non-flammable and explosive sewage, rainwater, almost no danger.

The most confusing is "pressure pipeline" - many people think that "pipeline = pressure pipeline = special equipment", but in fact pressure pipeline has a strict threshold: according to the "Pressure Pipeline Safety Technical Supervision Regulations", it is necessary to meet the three conditions of "maximum working pressure 0.1MPa, medium is flammable/toxic/corrosive liquid/gas, nominal diameter 50mm". Even if the pipe diameter of PE spiral corrugated pipe is large enough, it does not meet the requirements of "pressure compliance" and "medium danger". It is not a pressure pipeline at all, let alone special equipment.

From a practical perspective, if PE spiral corrugated pipe is special equipment, then every section of drainage pipe in the city must be inspected and regularly tested like a boiler - this is obviously not in line with reality. In fact, PE spiral corrugated pipes follow the industry standards of plastic pipes such as "Plastic Pipeline System, Polyethylene (PE) Structural Wall Pipeline System" (GB/T 19472), and the production, installation, and use are all managed according to ordinary drainage materials.

Why is there a misunderstanding? The essence is to equate the broad concept of "pipeline" with "pressure pipeline in special equipment", ignoring the "high risk" core of special equipment. Remember a sentence: special equipment is "high risk equipment that requires special supervision", PE spiral corrugated pipes are "ordinary low risk drainage materials", and the boundary is very clear.

Summary: PE spiral corrugated pipes are not special equipment. They are plastic pipes used for drainage and sewage discharge. They can be used according to the conventional specifications of plastic pipes. If you are still unsure, check the "Special Equipment Catalog" of the Market Supervision Bureau, or ask professional manufacturers - material compliance, the project is solid.