油ゆ井せい管かんじ字FuriganaMeanings1nounoil well pipeTechnical term used in the oil and gas industry for piping used in oil wells.油ゆ井せい管かんの耐たい食しょく性せいが油ゆ田でん開かい発はつの重じゅう要ような課か題だいだ。The corrosion resistance of oil well pipes is an important issue in oil field development.
