China Plastics ›› 2022, Vol. 36 ›› Issue (9): 131-139.DOI: 10.19491/j.issn.1001-9278.2022.09.018

• Standard and Test • Previous Articles     Next Articles

Pressure design of chlorinated poly(vinyl chloride) pipelines in sprinkler systems and comparative analysis of domestic and foreign standards

HE Anqi1(), HUANG Jian2(), ZHANG Ying3, SUN Huali2, XIANG Aimin3, XU Haiyun3   

  1. 1.China Fire and Rescue Institute,Beijing 102202,China
    2.ERA Co,Ltd,Taizhou 318020,China
    3.Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics,College of Chemistry and Materials Engineering,Beijing Technology and Business University,Beijing 100048,China
  • Received:2022-05-31 Online:2022-09-26 Published:2022-09-26

Abstract:

This paper analyzed the differences between the standard systems and grading requirements of plastic pressure pipes in China (GB), America (ASTM) and Europe (ISO). The GB standard system of China has the same requirements with ISO (Europe) standard system, but there are some differences with the ASTM standard system of America. However, the principle of long⁃term performance evaluation of polymer pipes is the same for three parts. This paper introduced the pressure design basis of PVC⁃pipe and grading curve of mixed materials of the pipes according to the ASTM D2837, ISO 9080, and GB 182525 standards. According to the GB/T 39380.1—2021 standard, the determination of qualification for the grading curve of PVC⁃C pipe mixture for fire sprinkling was clarified. The standards of PVC⁃C fire pipe at home and abroad were compared. The specifications, dimensions, pipe wall thickness, and other performance requirements were almost same for the Chinese national and American standards. The piping system in accordance with the national standard GB/T 39380 can guarantee the safe use at 20 ºC for 50 years under the fire pressure design conditions in China.

Key words: chlorinated poly(vinyl chloride), pipe, fire protection, standard, reference curve

CLC Number: