NF E29-625

Steel tubes - Welded unalloyed steel rings, internally threaded, for pressure equipment

Le présent document définit les dimensions, les tolérances, les caractéristiques mécaniques et les conditions de livraison des bagues filetées en acier non allié avec filetage gaz intérieur cylindrique. Il s'applique, aux bagues destinées à être soudées comme piquages filetés intérieurement sur les réservoirs et appareils à pression.

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