Specification of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures.
钢结构用高强度大六角头螺栓，大六角螺母，垫圈技术条件。
Shanghai Lingrui Fasteners Co., Ltd is a manufacturer of various kinds of high strength bolts, nuts, washers and various non-standard parts.
上海凌锐紧固件有限公司是一家专业生产和销售各类高强度螺栓，螺母，垫片及各种非标件的制造商。
Standard parts, fasteners of hot upsetting, such as high strength bolts, nuts and so on.
标准件、紧固件的热镦，如高强度螺栓、螺帽等。
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