The 757 Geological Brigade of the Guangdong Provincial Geological Bureau recently completed an evaluation report on the potential of rare earth mineral resources in Jiangmen City. It is found that the ionogenic rare earth ore deposits in the Jiangmen area are in good conditions for mineralization, and a large area of ​​mineralization has been discovered, with a forecast of 557,700 tons of resources. They suggested increasing the protection of this "national treasure" resource as soon as possible.
It is understood that ion-type rare earth ore is a rare earth deposit unique to southern China, with outstanding advantages such as complete distribution, high added-value element content, low specific radioactivity, high-tech application elements, and comprehensive utilization value. It is favored by all countries and is China's "national treasure" mineral.
The 757 Geological Brigade of the Geological Bureau of Guangdong Province has initially identified the rare earth mineral composition, structure, and quality of Jiangmen City, and made evaluations and suggestions on the resource potential. They pointed out that the amount of rare earth resources in the Republican area of ​​Heshan City under the jurisdiction of Jiangmen was 290,000 tons, and the amount of rare earth resources in the Gushiling area under the jurisdiction of Jiangmen was 45,700 tons. Yamen, Guhui, and Xinping districts under the jurisdiction of Jiangmen were included. The total amount of rare earth resources in Langdi, Datian Town is 220,000 tons.
The evaluation report pointed out that because the Heshan Gonghe rare earth mining area is a low hilly terrain and the mining area is adjacent to a prosperous town, the hills where large areas of rare earth mineral deposits are developed are developed into industrial areas, residential areas, highways, and golf courses. The precious mineral resources are As a result of encroaching on food and pressure, the mine area must take effective protective measures as soon as possible.
A weld neck flange (also known as a high-hub flange and tapered hub flange) is a type of flange. There are two designs. The regular type is used with pipes. The long type is unsuitable for pipes and is used in process plant.A weld neck flange consists of a circular fitting with a protruding rim around the circumference. Generally machined from a forging, these flanges are typically butt welded to a pipe. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts.
Such flanges are suitable for use in hostile environments that have extremes of temperature, pressure or other sources of stress. The resilience of this type of flange is achieved by sharing the environmental stress with the pipe with which it is welded.This type of flange has been used successfully at pressures up to 5,000 psi.
Weld neck pipe flanges attach to the pipe by welding the pipe to the neck of the pipe flange. The allows for the transfer of stress from the weld neck pipe flanges to the pipe itself. This also reduces high stress concentration at the base of the hub of the weld neck pipe flanges. Weld neck pipe flanges are often used for high pressure applications. The inside diameter of a weld neck pipe flange is machined to match the inside diameter of the pipe. Weld Neck Pipe flanges with a hub have published specifications that range from 1/2" thru 80". Zhongshun Flange provides Weld Neck pipe flanges in all material grades, specifications and sizes.
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