Color steel sandwich panels and synthetic resin tile which is more market
Online shopping bar, do not go to the supermarkets to buy online shopping, then remember that can not be less than 250 points below the price of a sub-goods
JGJ130-2011 "construction construction fastener steel scaffold safety technical specifications" in the provisions of the external scaffolding should be used rigid wall pieces.
Must be embedded in the concrete beam on the concrete beam, and then fasten the steel pipe connection, the use of steel connection, the connection point can be 2 steps 3 cross, the specific calculation by the book construction
