What is the ratio of steel and plastic in lean pipe？

The material ratio of lean pipe is usually composed of a metal layer (steel) and a plastic layer (outer plastic coating), and the specific ratio varies depending on production standards and applications. According to the search results:

1. Material structure: Lean pipe is a steel plastic composite pipe, with a plastic layer on the outer layer, a metal layer (steel strip composite material) in the middle, and an anti rust coating on the inner layer. The plastic layer is directly attached to the metal layer, forming a composite structure.

2. Thickness specifications: The common specifications for the thickness of the metal layer (steel pipe wall thickness) include 0.7mm, 0.8mm, 1.0mm, 1.2mm, and 2.0mm, while the thickness of the plastic layer is not explicitly mentioned, but it is usually tightly combined with the metal layer to form a complete structure.

3. Weight reference: The weight of a unit length of wire rod lean tube is about 0.2kg/m, which indirectly reflects the composite ratio of metal and plastic, but the specific ratio needs to be determined based on actual production parameters.

It should be noted that the exact ratio of steel to plastic is not directly provided in the search results, and the actual ratio may be adjusted due to differences in manufacturers, uses (such as load-bearing requirements), or processes. If precise data is required, it is recommended to consult the manufacturer directly or refer to specific product technical parameters