The models of buckle scaffolding are mainly divided into two categories: standard type B and heavy-duty type Z according to the “Safety Technical Standard for Socket type Buckle type Steel Pipe Supports in Construction” JGJ231-2021.
.
[Petroleum Technology 462] operation procedures for various downhole operations of Petroleum Engineering
Telephone Reply of the first civil division of the Supreme People’s Court on whether the actual construction personnel can claim the project
