Pipeline identification font size of China Construction Third Division

Pipeline identification includes pipeline number, full name of fluid and flow direction arrow. Among them, all Chinese characters are imitation of Song Dynasty, and English codes and chemical symbols are capitalized. The pipeline signs are all big red. The pipeline identification shall be located at the intersection of the pipe gallery in the working area. The intersection of pipe gallery should be marked on the lower side of the pipeline, and the height of the work area logo should not be higher than the font. Arranged along the axis, from left to right and from top to bottom. Provisions on font size of pipeline identification: All pipelines or insulation layers with outer diameter greater than or equal to 89mnw shall be marked with characters. The external diameter is greater than or equal to 89mn and less than 240mm inches, the bill size is 40mm×60mm, and the word spacing is 20mm. When the external diameter of the pipeline is greater than or equal to 240mnw, the note size is 120mm times 180mm, and the spacing is 40mm. Hanging sign: When the outside diameter of the pipeline is less than 89mm and it is difficult to identify, the sign can be hung at the required position. Signs are rectangular 250mm× 150mm, the size of banknotes is 40mm× 60mm, and the spacing is 20 mm. The arrow on the sign points in the direction of the fluid, and the size and length of the arrow should be consistent with the font size. Signs should be hung with fixtures, and iron wires are not allowed.