m.亚洲天堂,国产高清视频在线,亚洲 欧美 国产 动漫 综合,精品第一国产综合精品蜜芽
<tt id="plvt0"></tt>
Main page
|
Email
|
contact
Русский
·中文
·English
Main page
Products
certificates
About us
Contact
Products
New Products
Roadheaders
Mining equipment
Rock Tunneling
Shielding equipment
Drilling Rig for Coal Mine
Secondary Transport System
Drilling Rig
Truck-mounted Crane
Special Purpose Vehicle
Electric Parts
Hydraulic element
Typical Cases
Product series
New Products
Roadheaders
Mining equipment
Rock Tunneling
Shielding equipment
Drilling Rig for Coal Mine
Secondary Transport System
Drilling Rig
Truck-mounted Crane
Special Purpose Vehicle
Electric Parts
Hydraulic element
Typical Cases
Products
Main page
>
Products
>
Drilling Rig
Usage
250×250 Kelly bar is the driving drilling pipe special for big holes drilling. can used for the circulation and reverse circulation drilling, also can achieve gas inlet and deslagging, this kelly bar can withstand big torque and deslagging is good.
Specification
Copyright：Shijiazhuang Coal Mining Machinery Co., Ltd. ICP:09037270
Design by：
http://www.sjznet.net
