Traditional Culture Encyclopedia - Photography major - What is the national standard thickness of galvanized steel pipe?
What is the national standard thickness of galvanized steel pipe?
The national standard thickness of each model is (mm):
Model: thickness
DN 15:2.8，DN20:2.8，DN25:3.2，DN32:3.5，DN40:3.5，DN50:3.8，DN65:4.0，DN80:4.0，DN 100:4.0，DN。
Galvanized pipe, also known as galvanized steel pipe, is divided into two types: hot dip galvanizing and electro-galvanizing. Thick galvanized coating, uniform coating, strong adhesion and long service life. The cost of galvanizing is low, the surface is not very smooth, and the corrosion resistance is much worse than that of hot galvanized pipe. (Galvanized steel pipes are divided into cold-coated pipes and hot-coated pipes, the former has been banned, and the latter is advocated by the state for temporary use. )
Reference link:
Galvanized pipe-Baidu encyclopedia
Reference picture:
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