for climbs less than vertical hangerless machine bolts are recommended to reduce visual impact 若攀登路線角度小于直角,應使用無掛環(huán)機械錨栓,以減低對景觀的影響。
applying imported raw material and advanced manufacturing technology, together with modern scientific management system, it is specialized in manufacturing and selling machined bolts, selftapping screw bolts and nuts of stainless steel, copper oriron and hollow rivets of stainless steel, copper, iron or aluminiun in accordance with the standards of china gb, american ansi, japan jis, german din or england bs; and non-standardized hardware such as cross slots, inner hexagon fastening bolts, expansion bolts, and toy vehicle axles, its products are sold widely in domestic and foreign markets, earning quite high credit among customers 公司引進國外先進的冷鐓和搓絲設備,采用進口原材料及先進生產(chǎn)技術,并運用現(xiàn)代科學管理體制,專業(yè)生產(chǎn)和銷售中國gb、美國ansi、日本jis、德國din、英國bs標準的不銹鋼、銅、鐵機制螺釘、自攻螺釘、螺母;不銹鋼、銅、鐵、鋁空心鉚釘;十字槽、內(nèi)六角緊定螺釘、膨脹螺栓、精密自動車床件等非標準五金制品,產(chǎn)品遠銷國內(nèi)外市場,在廣大用戶中享有較高的信譽。