How to choose plastic lined steel pipe?
With the popularization of people’s awareness of environmental protection and health, new types of pipes for environmental protection water supply are springing up one after another, and the varieties are hard to enumerate.
Plastic lined steel pipe inherits the advantages and disadvantages of steel pipe and plastic pipe. One of the most important contents in pipe design is to reasonably determine the wall thickness of the pipe according to the use conditions and requirements, and this parameter directly affects the cost performance of the product.
The unique wall thickness design of plastic lined steel pipe includes inner plastic pipe wall thickness and outer welded pipe wall thickness, which determines a series of technical characteristics.
Epoxy resin composite steel pipe is a steel plastic composite product, which takes steel pipe as base pipe, plastic powder as coating material, melts a layer of plastic on its inner surface, melts a layer of plastic on its outer surface or anticorrosive coating of other materials.
Plastic coated steel pipe can be divided into polyethylene coated steel pipe and epoxy coated steel pipe according to different inner coating materials. The product mark consists of code of plastic coated composite steel pipe, code of internal coating material and nominal size. The water supply plastic lined composite steel pipe is made of thermoplastic pipes such as polyethylene (PE), heat-resistant polyethylene (PE-RT), cross-linked polyethylene (PE-X), polypropylene (PP-R), unplasticized polyvinyl chloride (PVC-U) and chlorinated polyvinyl chloride (PVC-C) on the inner wall of the steel pipe according to the requirements of the transmission medium. Due to the improvement of process, some products have been added with plastic coating.
The products are divided into plastic lined steel pipes for cold water and plastic lined steel pipes for hot water according to the temperature of water. The product mark consists of code of plastic lined steel pipe, code of plastic lined material and nominal diameter. When consumers choose such products, they should try their best to choose products with good reputation in large stores according to their actual needs.
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