***n420H ***n433H结构钢***n420H ***n433H钢材
价格：19.00
结构钢：***n420H***n433H***n438H***n443H***n***20H***n***43HSCr415HSCr420HSCr430HSCr435HSCr440HSCM415HSCM418HSCM420HSCM425HSCM435HSCM440HSCM445HSCM822HSN***15HSNC631HSNC815HSNCM220HSNCM420HSN400ASN400BSN490BSN490CSNR400ASNR400BSNR490BSTKN400WSTKN400BSTKN490B)