5.1 Material properties Standard vertical poles, horizontal poles, horizontal diagonal poles, vertical diagonal poles, and vertical pole connecting sleeves should be Q235 or Q345 ordinary steel pipes that comply with the provisions of GB/T13793, GB/T3091, and YB/T4202. Their materials The mechanical properties should meet the requirements of Q235 grade steel in GB/T700. Keyway sockets and key plugs should be made of cast carbon steel parts for general engineering use, and their material mechanical properties should comply with the requirements of the ZG230-450 grade in GB/T11352. When the adjustable support screw at the top of the pole is made of solid carbon structural steel, its material mechanical properties should comply with the requirements of Q235 grade steel in GB/T700. When using seamless steel pipes for structural purposes, the mechanical properties of the material should be
T/CMRA 01-2016 history
2016T/CMRA 01-2016 Socket type keyway steel pipe scaffolding
2015T/CMRA 01-2015 Specification for quality management of socket-type buckle-type steel pipe support