1.Steel Grade:201,202,304,304L,316,316L,321,etc. 2.High precision ... :0.33mm-25mm WT:0.1mm-1mm Stianless steel electrothermal tubes Detailed specification: GradeTP 202,TP 304, TP 304L, TP 316 ... )Web:www.cnnbtl.com/www.yytl.com Stianless steel electrothermal tubes