"Double Wall Corrugated Pipe (HDPE) DN300: Outer Diameter and Wall Thickness Parameters"

In many fields such as municipal drainage, farmland irrigation and industrial sewage, high-density polyethylene (HDPE) double-wall corrugated pipe has been widely used due to its excellent performance. Among them, DN300 is a very common specification in engineering. This article will explain the key size parameters of this specification pipe in detail for you.

First of all, DN300 represents the nominal size of the pipe, which refers to a nominal size of the inner diameter of the pipe. For HDPE double-wall corrugated pipe, its outer diameter is produced according to strict national standards (such as GB/T 19472.2-2017). The standardized outer diameter of DN300 double-wall corrugated pipe is usually 315 mm. This outer diameter size is the basis for ensuring that the pipe can be correctly matched with the corresponding specification of pipe fittings.

Wall thickness is another core indicator to measure the quality and performance of pipes. Double-wall corrugated pipes have a unique double-wall structure. Its inner wall is smooth, which is used to ensure the efficiency of fluid transportation. The outer wall is annular corrugated, which is used to enhance the ring stiffness and resistance to external pressure of the pipe. Therefore, its wall thickness is divided into the inner wall wall thickness and the wall thickness at the wave peak. For HDPE double-wall corrugated pipes with DN300 (outer diameter 315mm), the ring stiffness grade is different, and the wall thickness will be slightly different. Common SN8 (ring stiffness 8kN/m ²) grade pipes have an average inner wall thickness of about 2.0 mm, while the wall thickness at the wave peak is specially designed to provide strong support.

Ring stiffness is an indispensable reference factor when choosing double-wall corrugated pipe. It directly determines the ability of the pipe to resist soil load after being buried in the ground. HDPE double-wall corrugated pipe of DN300 usually provides multiple ring stiffness grades, such as SN4, SN8, SN10 or even higher. The higher the grade, the greater the stiffness of the pipe, which is suitable for working conditions with deeper burial or greater ground load.

Understanding the exact outer diameter and wall thickness parameters of HDPE double-wall corrugated pipe DN300 is essential for pipeline design, budgeting, construction and installation and final system safety of engineering projects. When purchasing, be sure to confirm that the product meets the relevant national standards, and select the appropriate ring stiffness grade according to specific engineering requirements to ensure long-term stable operation of the pipeline system.