... 2 13/16" to 3" 2) AISI 4145H Solid Round Bars Modified Alloy Steel, forged, heat treated to API requirement, ... Steel, forged, heat treated to API requirement, stabilizer shapebars with lower sulfur and phosphorous content to meet sour gas application ... austenitic steel, forged, heat treated to API requirement,solid round bars with lower sulfur and phosphorous content to meet sour gasapplication.Sizes ...