GB/T4237 Standard specifies the Stainless steel hot rolled steel sheet and strip classification, code, order content, dimension, shape, weight and allowable deviation, technical requirements, test etc.GB/T4237 Standard ferritic stainless steel main steel grade:008Cr30Mo2(00Cr30Mo2),022Cr11NbTi,022Cr12Ni,10Cr17(1Cr17) and so on.