ratio of wall-thickness to outside diameterとは 意味・読み方・使い方

In the above method, the seamless steel pipe is a thin-wall seamless steel pipe having a ratio (D/T) of an outside diameter to a wall thickness of 13 or more.例文帳に追加

また、上記継目無鋼管が、外径と肉厚の比（Ｄ／Ｔ）が１３以上の薄肉継目無鋼管であることを特徴とする真直度と真円度の優れた低残留応力継目無鋼管の製造方法。 - 特許庁

To form a screw in an extremely thin-walled pipe having a ratio of a wall thickness t to an outside diameter D of an oil well pipe (t/D) of 3 to 4% so as to prevent a pipe tip from becoming a knife edge.例文帳に追加

油井管の外径（Ｄ）と肉厚（ｔ）との比（ｔ／Ｄ）が３〜４％の極薄肉管に、管先端がナイフエッジにならないようにネジを形成すること。 - 特許庁

The resin tube 14 is formed as a small diameter tube with an outer diameter of 6 mm or less having a laminated structure of an ETFE layer 14A serving as a fuel barrier layer inside, and a PA layer 14B the outside, and the ratio d_2/t between the outer diameter d_2 and the wall thickness t of the tube is within a range of 4 to 8.例文帳に追加

また樹脂チューブ１４は、内側の燃料バリア層としてのＥＴＦＥ層１４Ａと外側のＰＡ層１４Ｂとの積層構造を有する外径６ｍｍ以下の細径チューブとなした上、チューブの外径ｄ_２と肉厚ｔの比率ｄ_２／ｔを４〜８とする。 - 特許庁