Current location:Home > metallic ironing board cover_camping picnic table covers >

metallic ironing board cover_camping picnic table covers

Choosing the right ironing board cover can make a significant difference in your garment care routin...
spotty ironing board cover
2025-08-16 17:48
Black table covers, often underappreciated in their role, have emerged as essential components in bo...
black table cover
2025-08-16 17:48
다림판 덮개는 가정에서 다림질을 할 때 필수적인 도구입니다 . 특히 열 저항 소재로 만든 다림판 덮개는 옷을 안전하고 효과적으로 다릴 수 있는 중요한 역할을 합니다. 관련 제품을...
다리미판 뚜껑
2025-08-16 17:43
Ironing board covers are often seen as minor accessories, yet their importance in the overall effici...
κάλυμμα σιδερώστρας
2025-08-16 17:19
As the chill of October sets in and the air fills with an aura of mystery, many start to imagine the...
halloween tablecloth
2025-08-16 17:05
Ironing board covers and pads are essential tools for achieving impeccably ironed clothes and linens...
Irresistibly Durable Ironing Board Cover and Pad
2025-08-16 16:49
Choosing the right tablecloth might seem like a minor detail in event planning, but it can make a si...
black tablecloths bulk
2025-08-16 16:36
The Universal Ironing Board Cover A Must-Have for Every Home Ironing can sometimes feel like a tedio...
universal ironing board cover
2025-08-16 16:22
다림판 덮개는 가정에서 다림질을 할 때 필수적인 도구입니다 . 특히 열 저항 소재로 만든 다림판 덮개는 옷을 안전하고 효과적으로 다릴 수 있는 중요한 역할을 합니다. 관련 제품을...
다리미판 뚜껑
2025-08-16 16:10
The Benefits of Outdoor Tablecloths with Elastic Bottoms When the sun shines, the birds chirp, and t...
outdoor tablecloth with elastic
2025-08-16 15:50
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • Latest articles
  • 3. Open-air drilling rig: according to the different working mechanism of crushing ore and rock, it is divided into steel rope percussion drill, drilling rig, cone drill and rotary drill. Because of low efficiency, the steel rope percussion drill has been gradually replaced by other drilling RIGS. The drill pipe drives the pneumatic impactor and the drill bit to rotate together, and the piston of the pneumatic impactor is used to impact the drill bit to break the ore and rock, which is usually used in small and medium-sized mines to drill holes with a diameter of 80 to 250 mm. The roller drill uses the rolling action of the roller bit to break the rock and is suitable for drilling holes of 150 ~ 440 mm in diameter on the hard rock. It has the advantages of high efficiency and low labor intensity, and is widely used in large and medium-sized open-pit metal mines. The drill consists of an impactor (or drill bit), a rotary mechanism, a lifting mechanism, a pressure device, a walking mechanism, a slag discharge system, a drill frame and a drill pipe. Rotary drilling machines are only suitable for drilling softer minerals and coal. The common feature of these devices is that the degree of automation is getting higher and higher, and some functions realize the application of intelligent i GPS technology on these RIGS, which realizes the automatic positioning of the boom, saves the time of field marking and positioning, improves the efficiency of the operation, and enables the operator to concentrate on monitoring the process of drilling. At the same time, more attention is paid to safety and environmental protection and the improvement of human-machine relationship. With the impact of the implementation of engine emission regulations, mobility, intelligent handling and environmental regulations Tier 3/ Euro ⅢA emission regulations, most foreign rig manufacturing companies have adopted diesel engines that meet the emission standards