- I beam(I steel, I section)
- 2016-10-29 00:34
- I beam(I steel, I section)Description: I beam, also called girder, is one kind of profiled bars which is strip profiled
- u channel(channel steel,u steel)
- 2016-10-25 15:37
- u channel(channel steel,u steel)Description: Channel is a kind of strip steel with a flute section. When there are kinds