Hebei jizen high pressure flange pipe fittings Co., Ltd. is one of the large enterprises specializing in producing and selling flanges, bending heads and pipe fittings in North China. The products are widely used in petroleum, chemical industry, light industry, electric power, metallurgy, shipbuilding, construction and other industries, products are sold throughout the country and exported to Korea, Singapore, Malaysia, Saudi Arabia, Thailand, United States, Pakistan, Bangladesh, Syria, Iran and other countries, in the domestic and foreign brand products in the market enjoy a good reputation. The threaded flange is a statement of more books, it is often said that the thread of products, generally used for pipe connection, is the most commonly used in DN15-DN100.
Threaded flange is a type of flange structure widely used in engineering construction, which has the advantages of convenient site installation and no need for welding. Due to this revision, the flange diameter of the steel pipe is extended from the metric tube to the two pipe outer diameter series of the metric tube and the British pipe. Therefore, the variety of the threaded flange is increased according to the ISO7005-1.
The threaded flange is only applicable to the British tube series.
When the thread type of threaded flange is 55 pipe threads according to GB7306, the outer diameter of the steel pipe used by the DN150 flange shall be 165.1mm.
When 60 conical pipe threads are used, the outer diameter of the steel pipe used for DN65 flange should be 73mm, and the outer diameter of the steel pipe used for DN125 flange should be 141.3mm.
In use, special attention should be paid to the nominal pressure range of the threaded flange and the nominal diameter range with reference to the ISO7005-1 setting. It's PN0.6~4.0MPA, DN10~150mm.
The sealing face type of threaded flange plate has two kinds, all plane and face. Take into account the structural characteristics of the threaded flange. Therefore, it is not suitable for flammable, explosive, high and extreme hazards. It is safe to use with small nuclear pressure, such as air conditioning and water system. As the home of the home of the pipe is screwed on the tap water. The threaded flange is the inner hole of the flange which is processed into the pipe thread and is connected with the pipe with the thread. It is a non welded flange.
Compared with the welded flange, the threaded flange has the features of convenient installation and maintenance, which can be used in some pipelines that are not allowed to be welded. The alloy steel flange has enough strength, but it is not easy to weld, or the welding performance is bad, and the screw flange can be selected.
However, under the condition that the temperature of the pipe has changed sharply or the temperature is above 260 C below -45 C, it is suggested that the threaded flange should not be used so as not to leak out.