Steel pipe knowledge-ZS001

In general, the tube diameter can be divided into outer diameter, inner diameter, nominal diameter. The outer diameter of the pipe for the seamless steel pipe is indicated by the letter D, followed by the size and wall thickness of the outer diameter, for example, a seamless steel pipe with an outer diameter of 108, a wall thickness of 5MM, indicated by D108 * 5, Also with the outer diameter, such as De63, other such as reinforced concrete pipe, cast iron pipe, galvanized steel pipe using DN said that the general use of nominal diameter in the design drawings that nominal diameter is designed to facilitate the manufacture and maintenance of man-made provisions A standard, but also more than the nominal diameter, is the pipe (or pipe) specification name.

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