National Standard of the People's Republic of China Flared type tube fittings- Weld male connector-Assembly This standard applies to expanded type welded pipe fittings for piping systems with oil and gas as the medium. GR 5642.2--85 Marking example: Expanded welded pipe joint with an outer diameter of 10 mm: Pipe joint 10 GB 5642.1-85 Published by the National Bureau of Standards on November 25, 1985 GB 5847-85 I GB 564E-R5 UDC621.643.4 GB 5642.186 Implemented on September 1, 1986 Outer diameter of pipe M16 × 1.5 M18 × 1.5Www.bzxZ.net M 27 × 1.5 M30 × 2 M33 × 2 M36×2 M39×2 M42×2 M45×2 Technical conditions shall comply with the provisions of GB5653 GB5642.1—85 85 "Technical conditions for flared pipe joints". St Additional remarks: This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and approved by the Standardization Research Institute of the Ministry of Machinery Industry. Quality (steel) kg/100 pieces This standard was proposed by the Standardization Research Institute of the Ministry of Machinery Industry, Shanghai Hydraulic Accessories!, Jiaoyang Automotive Research Institute, and Shanghai Hydraulic Pneumatic Research Institute. The main drafters of this standard are Hu Lu, Product, and Qiang Neng Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.