ERW Sizes: 2-3/8 ” – 24″OD .154″ – .500″ wall Specs: ATSM, API-5L Seamless Sizes: 4-1/2 – 10-3/4 Grades: B thru X42 Specs: ASTM, API-5L Fusion Bond Epoxy and TGF-3 coatings Special order coatings available