How to measure galvanized steel pipe?

1.What is galvanized steel pipe?

Galvanized steel pipe is ordinary steel pipe coated with a layer of zinc. It can be divided to hot deep galvanizing and cold galvanizing. Cold galvanized pipes have been banned.

2.What is the production processing of galvanized steel pipe?
There are two production methods for galvanized steel pipe that are often used. The first one, galvanized steel strip to be produced galvanized steel pipe. The second one, ordinary steel pipe to be galvanized.

3.How to measure galvanized steel pipe?
In order to guarantee good quality, all galvanized steel pipe should be inspected before delivery out factory. Then how to measure galvanized steel pipe? It should be followed some testing requirements.

1)Surface review, checking if the thickness of zinc coat can meet the customers’ requirements. And checking if the surface is smoothly.
2)Dimension measurement. Inspecting the length, wall thickness, and inside & outside diameters.
3)Mechanical property testing. To test the tensile, yield and elongation.
4)Chemical analysis. To test the content of each basic chemical element, such as C, Si, Mn, P, S.