175 MPa超高压井口6BX型法兰结构评价及轻量化设计

张绪亮,史君林,董仁,练章华,查磊,蒋洪波

Structural evaluation and lightweight design of 175 MPa ultra-high pressure wellhead 6BX flange

Xuliang ZHANG,Junlin SHI,Ren DONG,Zhanghua LIAN,Lei ZHA,Hongbo JIANG

图6 螺栓孔分布圆直径的确定

Fig.6 Determination of diameter of bolt hole distribution circle