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| | This paper introduces the knowledge and relevent to the insulation work of thermal pipeline as well as economical thickness of the insulationg layer and relative energy-saving benefit of four kinds of insulating materials applied to main steam pipeline in BISC.It consideres that new type of slag cotton product and foamed asbestos board are fairly good insulating materials under the heat source temperature of 600℃. | | 介绍了做好热力管网保温应具备的有关知识和数据,以及宝钢蒸汽主干管网在采用四种保温材料下的经济保温层厚度和相对的节能效益,认为目前适于宝钢公司热源温度在600℃以下较好的保温材料有新型矿渣棉制品和泡沫石棉板 | | 文摘来源 | | The author summarizes the principle of project cost calculation in Shanghai natural gas main pipelinenetwork design,by analysing design scheme in feasible research stage and effect of cost definition basis onproject cost and its control methods. | | 总结了笔者在上海市天然气主干管网工程设计中工程造价计算的思考原则,主要针对可行性研究阶段的管线设计工作中设计方案和造价编制依据对工程造价的影响以及控制方法进行分析讨论。 | | 文摘来源 | | The article introduces ductility crack and stop-crack of steel pipeline, the demands of calculationformula of stop-crack tenacity and some typical pipeline stop-crack tenacity. And screw welded steel pipelinetenacity value using in Shanghai main pipeline network in discussed. | | 介绍了输气钢管的延性断裂和止裂,止裂韧性计算的公式以及几条典型管线的止裂韧性要求,并且讨论了上海天然气主干管网工程用螺旋焊管韧性指标值。 | | 文摘来源 | |   | | << 更多相关文摘 |
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