... 2.Grade:AISI304,304L,304J1,321, 316Letc astm a 240 310s,304,316l hot rolled stainless steel ... of no2B is better than no2D. then through a special surface treatment to improve its mechanical properties,No2B ... .No.4Polished with abrasive belt of grit #150-#180,have better brightness with discontinuous coarse stria, but ... contact us.thank you!GOODS SHOW: astm a 240 310s,304,316l hot rolled stainless steel plate ...