Greenhouse steel pipes are divided into two types: hot-dip galvanizing and electroplating galvanizing. Hot dip galvanizing has a thick galvanized layer, which has the advantages of uniform coating, strong adhesion, and long service life. Electrogalvanizing has low cost and the surface is not very smooth, and its properties are much different from hot-dip galvanized pipes.

To improve the performance of steel pipes, general steel pipes are galvanized. Galvanized steel pipes are divided into two types: hot-dip galvanizing and electroplating galvanizing. Hot dip galvanizing has a thick galvanized layer, electroplating galvanizing has a low cost, and the surface is not very smooth. Blown oxygen welded pipe: used as a pipe for oxygen blowing in steelmaking, generally using small-diameter welded steel pipes with eight specifications ranging from 3/8-2 inches. Made from steel strips of 08, 10, 15, 20, or 195-Q235, some require aluminum infiltration treatment.

Parameters of greenhouse steel pipes:

Nominal wall thickness mm 2.0 2.5 2.8 3.2 3.5 3.8 4.0 4.5

Coefficient c 1.064 1.051 1.045 1.040 1.036 1.034 1.032 1.028

The mechanical properties of steel are important indicators of its ultimate performance (mechanical properties), which depend on the chemical composition and heat treatment system of the steel. In steel pipe standards, tensile properties (tensile strength, yield strength or yield point, elongation) as well as hardness and toughness indicators are specified according to different usage requirements, as well as high and low temperature performance requirements from users Steel grade: Q21； Q215B； Q23； Q235B

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