https://www.ynjsw.com/file/upload/2011/100/9932-17699-59105.jpg

等边角钢

https://www.ynjsw.com/file/upload/2011/100/9932-17699-59106.jpg

钢板

https://www.ynjsw.com/file/upload/2011/100/9932-17699-59107.jpg

工字钢

https://www.ynjsw.com/file/upload/2011/100/9932-17699-59108.jpg

焊管

https://www.ynjsw.com/file/upload/2011/100/9932-17699-59109.jpg

架子管

https://www.ynjsw.com/file/upload/2011/100/9932-17699-59110.jpg

轻轨

1

6