stainless steel sheet for escalator material:304,430,316,439 thickness: ... 0.4-3.0mm surface:NO.4/HL/NO.8/bead blast/etching stainless steel ... sheet for escalatormaterial:304,430,316,439 thickness: 1.4mm ... door, elevator, refrigeratory, dish washer, sink, kitchen ware... stainless steel sheet for escalator