The three-body is welded by two symmetrical longitudinal weld lines or two bodies are welded by a longitudinal weld line.

The manufacturing process of the cylinder body structure is simple, easy to assemble and locate, the mold required by the blank manufacturing is simple, and the supporting plate is convenient to fix the sphere.

The structure has good technology and is easy to install the stem part. It is especially suitable for large-bore all-welded ball valves. (Two-body is suitable for small diameter fully welded ball valve, three-body is suitable for large diameter fully welded ball valve)