Production methods can be divided into: pushing, pressing, forging, casting and so on. (Now it is generally pure forged)
304 stainless steel elbow can also be divided into equal diameter elbow, and non equal diameter elbow, equal diameter elbow used to connect the same size of the pipe, non equal diameter elbow used to connect the pipe with different outside diameter.
Manufacturing standards are: national standard, electric standard, water standard, American standard, German standard, Japanese standard, etc.
According to the radius of curvature: can be divided into long radius elbow and short radius elbow. A long radius elbow is one whose radius of curvature equals 1.5 times the outer diameter of the pipe, i.e., R=1.5D. A short radius elbow has a radius of curvature equal to the outer diameter of the pipe, i.e., R=1.0D. (D is elbow diameter, R is curvature radius).
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