Construction of fastener type steel pipe scaffolding safety technical specifications JGJ130-2011 on the steel cantilevered scaffolding provisions
XPS board easy brittle, high prices, EPS flexible flexibility, the price is relatively cheap
Technical specifications very easy to find ... ... you search in the library ...
Not very high, can be, mainly to see how much load, bowl button bearing than the fastener to be larger, fastener easy to use some, in any case, scissors are used to rotate the fastener, like a tiger mortar It is not necessary for you to consider what you are doing
