镀锌丝扣管件项目可行性研究报告编写日期：二零二二年三月1目录第一章总论................................................................................11.1项目概要...............................................................11.1.1项目名称..................................................................................................................11.1.2项目建设单位..............................
常用API接头丝扣规范单位：mm接头类型扣型扣数扣/英寸锥度基面丝扣平均直径公接头公扣长母扣长母扣镗孔直径大端直径小头直径数字扣NC23V-0.038R41∶659.82865.1052.4076.2092.07566.675NC26V-0.038R41∶667.76773.0560.3576.2092.07574.613NC31V-0.038R41∶680.84886.1371.3288.90104.7887.709NC35V-0.038R41∶689.68794.9779.0995.25111.1396.838NC38V-0.038R41∶696.720102.0085.06101.6117.48103.580NC40V-0.038R41∶6103.42...
