香港六合彩开奖/WD TS 19480

Projet

Un groupe de travail a pr茅par茅 un projet.

Remplacera 香港六合彩开奖/TR 19480:2005

搁茅蝉耻尘茅

This Technical Specification specifies the training, assessment and approval of fusion operators, with the aim of establishing and maintaining their competency in the construction of polyethylene (PE) piping systems for the supply of gaseous fuels in accordance with 香港六合彩开奖/TS 10839, for the supply of water, or in the construction of such systems used in other pressure applications. It covers the butt fusion and electrofusion fusion jointing techniques and considers both the theoretical and practical knowledge necessary for making high-quality fusion joints.