The approved exploration area is located in the central and western part of the Liaodong Peninsula, and the administrative division is under the jurisdiction of Wafangdian City. It takes the Wafangdian Kimberley Rock Ore Field to the Yongning Basin as the center, from the island to the west, to the mouth of Zhaokou in the east, from the fort in the south, to Yongning in the north, covering an area of ​​1,648 square kilometers. The time limit for the whole assembly survey in this area is 5 years. By 2017, it is planned to submit one large diamond production area for development, two large diamond mineral deposits are newly discovered, and 18 small and medium-sized diamond mineral deposits are newly discovered; The primary ore resources of diamonds and above are 2.9 million carats, and the resources of 334 types of diamond sand mines are 50,000 carats.
Self drilling Screw made of 410 stainless steel, high hardness (40 Rockwell C), steel process.
Drilling screw is also very strong hardness, compared to the ordinary screw up, not only to maintain the ability is good, the connection object effect is also very strong, for the performance of the screw, are generally does not need auxiliary processing, can be directly on the object directly drill a Kong Sue into objects, not just use rise very convenient, Also can greatly improve the efficiency of work. This kind of drilling screw can be said to be the first choice of workers in various fields.
So what is the use of drilling screws?
1 stainless steel plate, metal plate, galvanized steel plate, engineering installation.
2 metal curtain wall metal light compartment and other indoor and outdoor installation.
General Angle steel, channel steel, iron plate and other metal materials combined installation.
4, automobile, container, shipbuilding, refrigeration equipment and other assembly projects.
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