Butt Weld Elbow
Now we will talk about the classification method of elbow. According to its radius of curvature, it can be divided into long radius elbow and short radius elbow
Radius bend. Long radius elbow refers to its radius of curvature equal to 1.5 times the outer diameter of the pipe, that is, R=1.5D. short
Radius elbow refers to its radius of curvature equal to the outer diameter of the pipe, that is, R 2 D. In the formula, the mouth is the diameter of elbow, and R is the bend
The rate of radius. Suppose there are about seventeen of them in terms of pressure levels, which are the same as American pipe standards, including: Sch5s, Schl0s, Schl0, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s. xS; Sch80, Sch100, Sch120, Sch140, Sch160, xxS, of which the most commonly used are STD and Two kinds of xS. In terms of the Angle of the bends, there are 450 bends, there are 90 bends. Bend and 180. Elbow. So it bends, For example, "LR STD 90 8" represents a long radius, pressure class STD, 90 degree 8" elbow; for example," SR xS45 4 "represents a short radius, pressure class xS, 450 4" elbow. The above is the general classification of elbow.
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There are two kinds of three-way. The three ports with equal diameters are equal diameter tees, with the same diameters at both ends, but the confluence end
Diameters different from the other two are called reducing tees. The expression is as follows: for equal diameter tees, for example, "T3" A tee means an equal tee with an outside diameter of 3 inches. For reducing tees, for example "T4×4×3.5" means the same;4 "diameter 3.5" reducing tee. The pressure level and the pressure level of the elbow, The specifications are the same, too.
Reducers are also divided in this way. Large heads are expressed by multiplying the diameter of the large head by the diameter of the small head, e.g. "8"
"X 6" means the big head is 8 inches in diameter and the small head is 6 inches in diameter.
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