Read galvanized pipe model specifications, let you become an expert in purchasing!

Galvanized pipe models and specifications mainly include the following:

The DN15 galvanized pipe, with an outer diameter of 21.3mm, is often referred to as a 4-part pipe.

The DN20 galvanized pipe, with an outer diameter of 26.8mm, is often referred to as a 6-part pipe.

The DN25 type galvanized pipe has an outer diameter of 33.5mm and is usually referred to as 1 inch.

The DN32 galvanized pipe, with an outer diameter of 42.25mm, is often referred to as 1 "2.

The DN40 type galvanized pipe, with an outer diameter of 48mm, is usually referred to as 1 inch and a half.

The DN50 type galvanized pipe has an outer diameter of 60 mm and is usually referred to as 2 inches.

The DN65/70 galvanized pipe, with an outer diameter of 75.5mm, is often referred to as 2 1/2 inches.

The DN80 galvanized pipe, with an outer diameter of 88.5mm, is often referred to as 3 inches.

The DN100 galvanized pipe, with an outer diameter of 114mm, is usually referred to as 4 inches.

The DN125 galvanized pipe, with an outer diameter of 140mm, is often referred to as 5 inches.

The DN150 galvanized pipe, with an outer diameter of 165mm, is usually referred to as 6 inches.

The DN200 galvanized pipe, with an outer diameter of 219mm, is usually referred to as 8 inches.

Hot-dip galvanized steel pipe is widely used in construction, machinery, coal mine, chemical industry, railway vehicles, automobile industry, highways, Bridges, containers, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery and other manufacturing industries. Galvanized steel pipe is divided into cold galvanized pipe and hot galvanized pipe two types. Initially, galvanized steel pipes were mainly used as water pipes. However, after a few years, a large amount of rust and scale was produced in the tube, and the yellow water that flowed out not only contaminated the sanitary ware, but also mixed with bacteria that grew on the unclean inner wall. In addition, rust can also lead to high heavy metal content in water, seriously endangering human health. Therefore, in the 1960s and 1970s, developed countries began to develop new pipes and gradually banned galvanized steel pipes. China has also issued a document to prohibit galvanized steel pipes from 2000. At present, most new communities have rarely used galvanized steel pipes, but some communities are still using galvanized steel pipes.

Galvanized steel pipe is a layer of zinc plating on the outside of the steel pipe. Because ordinary steel pipes (called welded steel pipes in engineering), like cast iron pipes, are prone to rust and corrosion at room temperature, zinc plating on the outer layer of the steel pipe is to protect the pipe from corrosion. What we usually see is the color of the galvanized layer. Because welding will destroy the galvanized layer, at the same time, there will be electrochemical corrosion between the solder and the galvanized layer, so the galvanized steel pipe is not allowed to weld in principle. Under normal circumstances, galvanized steel pipes are connected by wire connection, clamp connection or wire flange connection.