Kingyear W16 serial HSS roll products are the result of over 10 years continuous research & development. The special chemical analysis,Website:http://www.kyhssrolls.com, melting process, centrifugal casting and heat trea ...
Chengdu kaiyuan roll industry co., LTD
229 Helin Rd, Zone A, Xinjin Industrial Park, Chen
Chengdu, ZH 610000