| abstract |
[PROBLEMS] To secure a fixing allowance and an appropriate center-to-center dimension with a clamp of a normal welding machine, and at the same time to be positioned on the same axis even when a joint having a welded annular portion having a short cylindrical shape is welded. To provide a resin end face butt joint, a welding method for the joint, and piping equipment. A welding base is provided with a plurality of welded annular portions communicating with a flow path in the joint base, and a welding machine is provided coaxially with at least one welded annular portion of the welded annular portion and at an outer end of the joint base. This is a resin end face butt joint provided with a clamp fixing portion. [Selection] Figure 1 |