30mm Dovetail Scope Rings are a specific type of dovetail mounting system designed to accommodate rifle scopes with a 30mm main tube diameter. These rings feature a dovetail design that slides into a corresponding dovetail-shaped groove on the firearm's receiver or rail system. The 30mm measurement refers to the internal diameter of the scope rings, which is the size of the scope tube they are designed to hold securely.
As with other dovetail scope rings, 30mm Dovetail Scope Rings offer certain advantages, such as:
Low profile: The dovetail design provides a streamlined and low-profile setup, which can be aesthetically pleasing and reduce the overall bulk of the firearm.
Secure fit: The interlocking design of the dovetail system ensures a stable and secure connection between the scope and the firearm, minimizing the chance of the scope shifting during use.
Easy installation and removal: Dovetail scope rings can be easily installed or removed, making it simple to adjust, maintain, or swap scopes between firearms.
However, it is essential to note that 30mm Dovetail Scope Rings are designed specifically for scopes with a 30mm main tube diameter, and they may not be compatible with scopes of other sizes. Additionally, dovetail mounting systems may not be as versatile as other systems like Picatinny or Weaver rails, which can offer more mounting options and are compatible with a wider range of accessories.
,Optics Mounts, Rifle Scopes Accesspries Guangzhou Miaozhun Jie Trade Co.,Ltd. , https://www.focuhunter.store
According to the Korea Shipbuilding News, Hyundai Heavy Industries recently successfully developed LNG cargo tank technology and further accelerated its development in the field of LNG vessels.
Hyundai Heavy Industries completed the film-type LNG cargo tank development project and received design recognition from American Bureau of Shipping (ABS) and the Norwegian Classification Society (DNV). The cargo tank developed by Hyundai Heavy Industries is different from other cargo tanks that use cement. It uses metal materials, welding, and double wall construction to completely prevent the exposure of LNG. On this basis, the introduction of insulation panels, compared with the original products, the LNG gasification rate of more than 10%.
The cargo tank developed this time is named "modern film type LNG cargo tank", which will be introduced to the market after the final function test. Later, the cargo tank will be introduced to LNG ship, LNG-FPSO, LNG barge and LNG fuel propulsion system.
LNG cargo hold is the core technology of LNG ship construction project. So far, when constructing LNG ship, it should pay the patent fee of 5% of the ship price to the shipping company with foreign patent technology, each ship is about 10 million US dollars.
After the accident at the Japanese nuclear power plant, the demand for LNG has increased significantly, and the order volume of LNG ships is expected to increase. Under this circumstance, the development of LNG cargo tanks can improve the competitiveness of orders.