Supported by metal frame, boom using screw-wide teeth, use specifications shown in the table below.

横担采用轻钢龙骨，吊杆采用全牙螺杆，选用规格见下表。

youdao

Supported by metal frame, boom using screw-wide teeth, use specifications shown in the table below.

横担采用轻钢龙骨，吊杆采用全牙螺杆，选用规格见下表。

youdao