| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin coated joint wherein a high nitrile polymer composition which is, of course, easy to injection mold, free from a problem of public nuisance even by thermal disposal for final abandonment and excellent in anti- shock property against a piping and transparency is used for the forming of a coating body, therefore it becomes possible to inspect the discrimination and confirmation of the color of the joint body, whether a seal ring is attached after the work is done, attaching condition and residual thread length, it becomes easy to trace the cause of leakage from the inside and water immersion from the outside and it becomes easy to inspect a defective product and in addition it becomes easy to hang a wrench properly because the inside is seen through from the coated layer after the piping is done. SOLUTION: In the resin coated joint wherein a cylinder type coated body is transparently formed with a synthetic resin by putting the joint body made of casting and a nozzle part sandwiching the seal ring between the pipings threaded in the joint body for forming the coated body is protruded from the opening edge of the joint body, the synthetic resin forming the coated body is the high nitrile polymer composition suppressing discoloration into yellow at forming and simultaneously exerting the anti-shock property.
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