Q345b alloy round steel bar Alloy Seamless Steel Pipe 1cr5mo Aisi 1045 Hollow Steel Round Bar

Nominal wall thickness: mm2.0, 2.5, 2.8, 3.2, 3.5, 3.8, 4.0, 4.5;

Coefficients: c1.064, 1.051, 1.045, 1.040, 1.036, 1.034, 1.032, 1.028.

Note: The mechanical properties of steel are important indicators to ensure the final use performance (mechanical properties) of the steel, which depends on the chemical composition and heat treatment system of the steel. In the steel pipe standard, according to different use requirements, the tensile properties (tensile strength, yield strength or yield point, elongation), hardness and toughness indicators, as well as high and low temperature properties required by users are specified. Grades of galvanized pipe steel: Q215A; Q215B; Q235A; Q235B

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