CAPSULE-SHAPED AND GROUP OF PRESSURE SUPPRESSION SAFETY DEVICE, AND GROUP OF EF JOINT, EF COMPONENT FOR CLOSING OPENING PORTION, SERVICE TEE NOT INCORPORATING HOLE SAW, AND THE LIKE PROVIDED WITH PRESSURE SUPPRESSION SAFETY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a new pressure suppression safety device, and a group of EF joints provided with a group of the pressure suppression safety device.;SOLUTION: A group of pressure suppression safety devices are manufactured in an environment of the same manufacturing pressure same as a set internal pressure of the pressure suppression safety device.;SELECTED DRAWING: Figure 9;COPYRIGHT: (C)2019,JPO&INPIT