Galvanized Welded Pipe Weight Factor :
Nominal Wall Thickness mm 2.0 2.5 2.8 3.2 3.5 3.8 4.0 4.5
Factor c 1.064 1.051 1.045 1.040 1.036 1.034 1.032 1.028
The Steel Grades:Q215A;Q215B;Q235A;Q235B
Test Pressure Value/Mpa:D10.2-168.3mm为3Mpa;D177.8-323.9mm为5Mpa Chinacoal05