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抽油胶皮阀门是安装在采油井口装置上与调心盘根盒配套使用的装置 ,其丝杆螺母零件材质按照设计要求应为优质碳素结构 4 5钢。如今发现 ,某油田该零件材料却由ＺＧ4 5钢代替 ,引发了一起因脆断而酿成的人身伤亡事故。事后经过材质分析鉴定认为 ,该材料的化学成分虽然符合ＧＢ11
Suction rubber valve is installed in the oil wellhead device and the use of self-aligning packing box device, the screw nut parts material in accordance with the design requirements should be high quality carbon steel 45. It has now been found that the part material of an oilfield is replaced by ZG4 5 steel, triggering a personal injury and death accident caused by a brittle fracture. After the material analysis identified that the chemical composition of the material though in line with GB11