16Mn low-pressure alloy steel pipe | 16Mn low-pressure alloy steel pipe knowledge
16Mn low-pressure alloy pipe is: 16Mn is called low-pressure alloy high-strength structural steel low-pressure alloy high-strength structural steel: carbon-containing alloy pipe volume of 0.1% - 0.25%, adding the main alloying elements manganese, silicon, vanadium, niobium and titanium, etc.; The total amount of alloys is less than 3%. It is divided into four levels of 300, 350, 400 and 450 MPa according to intensity. There are mainly Q295, Q345, Q390, Q420, Q460. : "Q" is the Chinese Pinyin capitalized initial of the yielding "Qu", and the subsequent number is the value of the minimum yield point (σs) of this grade. The following symbol is based on the content of the impurity elements (S, P) of the steel. It is divided into A, B, C, and D grades when it is low and changes with carbon and manganese. A, B grade steel is generally called 16Mn16mn low-pressure alloy steel pipe chemical composition C: 0.12~0.20; Mn: 1.20~1.60; Si: 0.20~0.55; Tensile strength: 470~660 N/mm2; Yield strength: 275 ~345 N/mm2; Elongation: 21%. The specific value should be based on the thickness or diameter of the steel. The above data corresponds to the thickness or diameter of the steel: 16~100mm
The purpose of the 16mn low-pressure alloy steel pipe is “16Mnq†for special steel grades for bridges, “16MnL†for special steel grades for automobile girders, and “16MnR†for pressure vessels.
16mn low pressure alloy steel pipe standard
GB8163-1999 (for conveying fluid) GB6479-2000 (seamless steel pipe for high pressure fertilizer equipment)
Alloy tube and seamless tube are both related and different and cannot be confused.
The alloy pipe is defined according to the production material (that is, the material). The tube is defined by the alloy as its name implies; and the seamless pipe is defined according to the production process (seamless seam), which is different from the seamless pipe. Sewed pipe, including straight seam welded pipe and spiral pipe.
16Mn low-pressure alloy pipe weight calculation test
[(Outer Diameter - Wall Thickness) * Wall Thickness] * 0.02466 = kg/meter (weight per meter)
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