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由冶金部钢铁司主持的球铁铸管和楔形胶圈接口技术鉴定会,有来自全国冶金、纺织、市政建设等行业的有关科研、设计、生产、施工和使用方面的三十多个单位52名代表参加。会上,鞍钢铸管厂介绍了管径600毫米离心球铁管试制情况,营口化肥厂介绍了管径600毫米16公里输水管线采用楔型接口和部分球铁管的施工、试压、通水情况;二十二冶建研所就国外球铁管的发展概况和铸铁管接口密封技术作了全面介
The ductile iron cast pipe and wedge-shaped rubber ring interface technology appraisal meeting hosted by the Ministry of Metallurgical Department of Iron and Steel has more than thirty units related to scientific research, design, production, construction and use from the nation’s metallurgical, textile and municipal construction industries. Representatives participate. At the meeting, the Anshan Iron and Steel Casting Plant introduced the trial production of a 600 mm centrifugal ductile iron pipe. Yingkou Chemical Fertilizer Plant introduced the construction of a wedge-shaped interface and part of a ductile iron pipe for a pipeline with a diameter of 600 mm and a distance of 16 km. Water conditions; Twenty-two Metallurgical Research Institute made a comprehensive introduction to the development of foreign ball-iron pipes and the sealing technology of cast iron pipe joints.