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由冶金部建筑研究总院与天津标准件三厂、天津机械配件公司共同研制的φ22×200mm圆柱头焊钉,最近在天津通过专家鉴定。研制者为完成这项在世界第二大组合桥——上海南蒲大桥上应用的大尺寸高强度焊钉的研制任务,在材料选择、加工工艺、焊接参数等方面立足国内现有条件做了大量细致的研究工作,找到了合适的符合工程技术要求的优质钢材和焊接参数。这项已被列入天津1990年新产品试制计划的产品为我国打入国际市场开辟了一条新的途径。
The φ22×200mm cylindrical head studs jointly developed by the Ministry of Metallurgical Construction Research Institute, Tianjin Standard Parts Factory and Tianjin Machinery Parts Co., Ltd. were recently approved by experts in Tianjin. The research and development team completed the task of developing large-size, high-strength welding studs on the Shanghai Nanpu Bridge, the second largest bridge in the world, based on existing domestic conditions in material selection, processing, and welding parameters. A lot of meticulous research work, found a suitable high-quality steel and welding parameters that meet the engineering requirements. This product, which has been included in Tianjin’s new product trial production program in 1990, has opened up a new path for China to enter the international market.