Girth flange bolting shall be of stud bolt type, threaded full length, and at least M16 for flange of 600 mm and smaller inside diameter and at least M20 for over 600 mm inside diameter flange.
翼缘法兰螺栓应为双头螺栓，螺纹为全长型，内径600 mm或以下的法兰的螺栓至少为m 16，内径600 mm以上的法兰的螺栓至少为m 20。
Hex Bolts, Stud Bolts, Anchor Bolts, Expansion Bolts, Eye Bolts, Threaded Rods.
六角螺栓，双头螺栓，地脚螺栓，膨胀螺栓，吊环螺栓，牙杆。
The term stud as referred to herein, applies to a cylindrical rod of moderate length, threaded on either one or both ends or throughout its entire length.
螺柱这里是指适用于中等长度圆柱杆，螺纹在一端有或两端都有，或全螺纹的产品。
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