The First Machinery Industry Department of the People's Republic of China Standard T-type Attached Threaded Pipe Fittings JB969-67 This standard is applicable to hydraulic transmission pipelines of petroleum-based viscous liquid media, and can also be used in lubrication pipelines of similar media. The working temperature is between -25 and +80℃. The working pressure is divided into three levels: Z-medium pressure level, pg=25~80kgf/cm*, Zg-medium and high pressure level, pg=80~160kgf/cmG-high pressure level, pg=160~320kgf/cm2. Wrench size S, Wrench size S: Marking example, Wrench size S, Wrench size S2 Reducing type Basic type, steel pipe outer diameter Dout = 10mm: T-type attached pipe joint G10JB969-67 Reducing type, steel pipe outer diameter Dout = 28mm, outer diameter dout = 22mm after reduction, number of reducing pipes is 2, medium and high pressure level: T Type attached pipe joint Zg28/22 (2) JB969--67 If zinc or cadmium plating is required, it is G10JB969-67Zn or Zg28/22 (2) JB969-67Cd Casting and Forging Machinery Research Institute proposed January 1, 1968 Permitted Working pressure Outer diameter of steel pipe Reducing type M27×2| |tt||M33×2 M42×2 M48×2 M60×2bzxz.net JB969-67 Weight of each 1000 sets kg~ Part number Part name Pipe joint O-ring seal Pipe joint body Sealing gasket Reducing pipe JB96 9--67 Parts List Nominal size of parts under various outer diameters of steel pipes 10 D18×1 10/6|14/10 Standard number 333-66 The material of the seamless steel pipe is No. 15 steel, the precision is ordinary grade, and the wall thickness is selected according to the recommendation of the JB/Z95-67 Guiding Technical Document for Seamless Steel Pipes for Hydraulic Systems. The thread size d of the matching screw hole is in accordance with the provisions of GB196-63, and its manufacturing precision is manufactured according to the 2a grade in GB197-63. The tolerance of the non-verticality of the end face of the screw hole matching the sealing gasket (Part 5) to the center line of the thread d is 0.1. When individual users produce the pipe joint in single pieces or small batches, in order to facilitate their production conditions, slight modifications are allowed in the structure. For details, please refer to the provisions of JB/Z97--67. 328 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.