ArborsArbors aka. Roll shaft,Website:http://www.kdroll.com, it is compatible to sleeves. It is normally used for universal mills.We produce various qualities for sleeves and roll shaft, such as SGP, SGA, Adamite, GT Adamite.Table.1 Chemical Composition % NameCSiMnCrNiMoSGP2.90/3.601.00/2.200.40/1.000.20/1.201.50/3.000.20/0.80SGA2.90/3.601.00/2.200.20/0.800.20/1.503.00/4.500.50/1.00Adamite1.50/2.100.30/0.800.60/1.300.80/3.500.50/2.500.20/0.80GT Adamite1.40/1.600.30/0.800.70/1.501.00/2.001.00/3.000.40/0.80GS1.60/2.201.20/2.000.50/1.501.00/3.001.00/3.000.40/0.80Table.2 Properties and Apllication of SleeveNameHardness HSTesile StrengthMPaDimensionMMUnit N.WKGSApplicationSGP55/65450￠400-1700400-10000Sleeve for universal mill, vertical rolling mill, roughing and intermediate stand of bar mill and rod millSGA60/70450Adamite50/60600GT Adamite55/65700GS55/75700