Brief introduction of equivalent length of pipe thread

　　Brief introduction of equivalent length of pipe thread

　　The bending radius of equivalent length refers to the elbow, GB/T12459-2007 provides two bend radius, 1D and 1.5D. The first thing to remember is that one inch 25,4mm. Remember to call the pipe diameter. Call the size of “inch” and DN. Take DN100, DN100 is 4 inches. The bending radius of it as follows: 4X25.4=101.6 （mm）。 The bending radius is 1D. 101.6X1.5=152.4, four to five homes in 152, this is the 1.5D bending radius. The caliber of 1 above is the formula “. Don't believe in yourself to calculate the control standard. The following 1 ”1/2“, 3/4 ”is special. According to the standard! Is formulated in accordance with ASME B16.9 standard GB/T12459-2007, so inches and our standard fittings of DN call diameter relation is origin.