GLOSSARY Menu Domestic Domestic Prime Domestic with Letter Secondary Domestic Secondary About SPS SPS Advantage Giving Back Glossary Get Quote Call us 281-375-9672 Contact Us GlossaryAll | A B C D E F G H I J K L M N O P Q R S T U W There are currently 2 terms in this directory beginning with the letter O.OCTGOil Country Tubular Goods.ODOuter Diameter. This is the first term generally used when describing pipe.