Model no.: a193 b7 Surface finishing: zinc plated Customized: customized Raw material: q235/c45/16mn/65mn/35crmo/42crmo, etc Heat treatment: yes Trademark: sd Origin: ningbo, china Material: carbon steel Certification: iso Length: 1000mm-3000mm Surface: plain, black oxide, galvanized, hdg, yzp, dacromet Port: ningbo Specification: b7 Hs code: 7318190000 Level Type Rm(mpa) Rp0.2(mpa) A(%) Z(%) Hardness B7 =880 >=740 >=17 >=51 27-33hrc B7 >2-1/2-4"(m64-m100) >=810 >=670 >=17 >=51 27-33hrc B7m