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You are welcome to come QINGDAO SEAVIN IMP.&EXP. CO.,LTD.

TEL:+86-532-8091 5579



Tel:+86-532 80915579

Fax:+86-532 66759532


Add:Rm.1906 Bohai Center,No.83 Fuzhou South Road,Qingdao,China.

Steel Ring Cups



△Adopt advanced steel ring technology ensures excelent performance

△Adopt high quality GCr15 bearing steel with special wear-resisting and antioxidant appearance, the mirco-hardness about HV830 to HV900 at any point from its surface to inside. It owns compact and refined Martensitic structure.

△High precision process ensures roundness tolerance and flatness at 0.013mm which leads to less friction.

△Working life is 5 times of common super polished steel ring about 3-5 years which keeps the quality of yarn stable chronically.

△Trademark: JF, J+F and H.Yue.