Threaded flange English name: crewed flange Definition: with the device or pipe threaded flange connection. In fact, it is often said of threaded products, and more generally for pipe connections, the most commonly used is from DN15-DN100 for. Threaded flange is a flange structure type widely used in construction, with easy on-site installation, welding without merit. Since this amendment will be applicable flange steel pipe OD Series expanded from metric to metric and imperial tube tube two pipe diameter range, therefore increasing the threaded flange ISO7005-1 reference varieties. Threaded flange only for inch tube. Screw threaded flange type used are 55 threads provided by GB7306, the pipe diameter DN150 flange should be equipped with 165.1mm. When using 60 tapered pipe thread, pipe diameter DN65 flange should be used with 73mm; pipe diameter DN125 flange should be equipped with 141.3mm. Special attention should be in use, the threaded flange nominal pressure range and nominal diameter range is set with reference to ISO7005-1. To PN0.6 ~ 4.0MPA, DN10 ~ 150mm. Threaded flange sealing surface, there are two full-face and raised face and so on. Taking into account the structural features threaded flange. Therefore should not be used where flammable / explosive and height and extreme hazards of nuclear pressure is small, such as air conditioning systems, water is safe to use. Fittings such as home tap water used on the home, is threaded in.