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HONGBO offers chrome-plated liners made from premium forged steel with the core plated by chrome.The chrome-plated liners have hardening characteristics of 58 to 62 Rockwell C hardness.

Chrome-plated Liners
Hardend steel liners are made with premium seamless steel tube or Premium forged steel,in which the bore is carburized and quenched,creating a hardened layer with hardness of 58 to 62 Rockwell C scales.

Address:No. 8 Tengfei Road, Tengfei Industry Zone, Duanpolan Town
Qingdao Jimo City, Shandong Province, China 266225
Tel: 86-532-83561799 Fax: 86-532-83561899