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The iron pipes used for gas, greenhouse, and heating are also galvanized pipes.

Uniformity of galvanized layer: The steel pipe specimen shall not turn red (copper plated) after being continuously immersed in copper sulfate solu...

The problem of the galvanized steel pipe mouth not being in a straight line and having an oblique joint with the steel pipe is recommended to cut o...

Grind the inner wall welding ribs of the groove pressing part of the pipe mouth flat to reduce the rolling groove resistance.

Firstly, use a solvent to clean the surface of the steel and remove any organic matter on the surface

The higher the carbon content, the higher the hardness of the steel, but its plasticity and toughness are poorer

The grade and chemical composition of the steel used for galvanized steel pipes shall comply with the grade and chemical composition of black pipe ...

black pipe - alkaline washing - water washing - acid washing - rinsing with water

Test pressure value/Mpa: D10.2-168.3mm is 3Mpa; D177.8-323.9mm is 5Mpa

Hot dip galvanized steel pipes are widely used in manufacturing industries such as construction, machinery, coal mining, chemical industry, electri...

Galvanized steel pipes are divided into cold galvanized steel pipes and hot-dip galvanized steel pipes.