| abstract |
Even when a joint having a short tubular welded ring-shaped portion is welded, it is possible to secure a fixed position and an appropriate center-to-center dimension with a clamp of a conventional welder, A welding method of the joint and the joint, and a pipe base. The means for solving the problem is provided with a plurality of fused ring portions (13, 14) communicating with the flow path (15) in the joint base in the joint base (12), and at least one fused annular portion (18, 18) for tightening with the clamp of the welder at the outer end of the joint base, which is coaxial with the welded annular portion and is opposite to the welded annular portion, 19) is a resin cross-sectional butt joint. |