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ABOUT US“ZGL GROUP” owns a technological R&D center with a great number of high quality talents of strong will, precise skill and professional expertise, among which there are 40 senior and intermediate level technicians with master
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PRODUCTS“ZGL GROUP” owns a technological R&D center with a great number of high quality talents of strong will, precise skill and professional expertise, among which there are 40 senior and intermediate level technicians with master
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NEWS“ZGL GROUP” owns a technological R&D center with a great number of high quality talents of strong will, precise skill and professional expertise, among which there are 40 senior and intermediate level technicians with master
Roller polished / honed seamless steel tubing is cold drawn both internally and externally and then tempered with tensile strengths up to 520 N / mm2 or more. Then Golden Asia perfected the job with its own precision honing / honing roller with polished finish and H7, H8 diameter tolerance. This helps extend cylinder life and reduces seal wear.
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