Alloy Steel T91 EFW Tubes<\/a><\/strong>\u00a0offers improved resistance to heat zone corrosion attack and to stress corrosion cracking when compared to other alloys.<\/span><\/p>\nAt the same time, by control of carbon and nitrogen, and careful selection of chromium, molybdenum, and tungsten levels, corrosion properties of many of the nickel \u2013 based alloy, such as of these\u00a0Alloy<\/u>\u00a0Steel T91 ERW Tubes<\/u><\/strong>, have been attained.<\/span><\/p>\nIndustry users like the resistance of our Alloy Steel T91 Round Tubes to a wide range of organic acids and the resistance to chloride \u2013 induced stress \u2013 corrosion cracking. These Alloy Steel T91 Square Tubes resists the formation of grain boundary carbide precipitates in the weld heat \u2013 affected zone, making it suitable for most chemical process applications in the as-welded condition.<\/span><\/p>\n\n\n\n\nAlloy Steel T91 Seamless Tubes Specifications<\/strong><\/span><\/h3>\n<\/td>\n<\/tr>\n\nSpecifications<\/strong><\/span><\/td>\n:<\/strong><\/span><\/td>\nASTM A\/ASME SA213, A691<\/span><\/td>\n<\/tr>\n\nDimensions<\/strong><\/span><\/td>\n:<\/strong><\/span><\/td>\nASTM, ASME and API<\/span><\/td>\n<\/tr>\n\nTubes Size \n<\/strong><\/span><\/td>\n:<\/strong><\/span><\/td>\n1 \/ 2\u201d OD up to 5\u201d OD, customs diameters also available<\/span><\/td>\n<\/tr>\n\nOuter Diameter<\/strong><\/span><\/td>\n:<\/strong><\/span><\/td>\n6-2500mm; WT:1-200mm<\/span><\/td>\n<\/tr>\n\nSchedule<\/strong><\/span><\/td>\n:<\/strong><\/span><\/td>\nSCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS<\/span><\/td>\n<\/tr>\n\nType<\/strong><\/span><\/td>\n:<\/strong><\/span><\/td>\nSeamless \/ EFW \/ Fabricated<\/span><\/td>\n<\/tr>\n\nForm<\/strong><\/span><\/td>\n:<\/strong><\/span><\/td>\nRound, Square, Rectangular, Hydraulic Etc<\/span><\/td>\n<\/tr>\n\nLength<\/strong><\/span><\/td>\n:<\/strong><\/span><\/td>\nSingle Random, Double Random & Cut Length.<\/span><\/td>\n<\/tr>\n\nEnd<\/strong><\/span><\/td>\n:<\/strong><\/span><\/td>\nPlain End, Beveled End, Treaded<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nT91 Alloy Steel Tube Chemical Composition<\/strong><\/span><\/h3>\n | | | | | | | | | | | | | | | | | | | | | | | | | | | |