The United States is the first country in the world to implement legal control over ship ballast water discharge. Its ballast water discharge standards are recognized as the most demanding standards in the world. Some indicators are 100 to 1000 times higher than international maritime standards. Some indicators are close to or Achieve zero emissions. Today, a total of 12 models of Qingdao Shuangrui Ship's ballast water management system have all passed the certification, becoming the first system in the world to receive this certification.
Qingdao Shuangrui launched a research on ballast water management system in 2006. Now it has become one of the three major manufacturers of ballast water management systems in the world, and has become the only one in the world to hold the four world-class ships of Norway, Britain, France and China. A system of type approval certificates that enters the global ship market.
Left-hand full-thread bolt
Left-handed full-thread bolts are mainly used in mines where rock formations such as coal mines are not hard enough. bolts are generally used together with anchoring agents to achieve end anchoring or full anchoring in mines.
ANTO left-handed full-thread bolt is made of high-strength HRB500 or HRB600, which can provide high load-bearing capacity to protect mine safety.
Compared with other bolts, it can be installed using ordinary foreign drilling rigs, which saves installation costs.
Anto left-handed full-threaded anchor rod, the threads are distributed throughout the rod body, increasing the moving length of the nut, if the anchor rod support is loose in the later stage, tighten the nut, and the anchor rod restores the support force.
The one-way left-handed rebar bolt without longitudinal reinforcement can be used in all kinds of mines and underground projects, and is especially suitable for the support of coal tunnels with wire mesh. It has achieved good technical and economic effects.
The structural features of the anchor rod: the full length of the body has a rolled continuous thread, and the full length is of equal strength; the fastening end is provided with a prestressed gasket and a ball nut. It is superior to the bolt processed by round steel, and is a new type of bolt with material saving, labor saving and equal strength.
16mm Full Threaded Steel Rock Bolt,16mm Threaded Steel Bolt,16mm Threaded Steel Rock Anchor Bolt,16mm Full Threaded Steel Anchor Rod
ANTO MINING EQUIPMENT CO.,LTD , https://www.antobolts.com