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多层高压简体在包扎时两端需留25～35毫米余量,(如图)两节筒体在组对前,两端都需车去余量和加工出焊接坡口。过去这项工作一直用车床加工。用车床加工需昂贵的工时(20米车
Multi-layer high-pressure Simplified Binding at both ends to leave 25 to 35 millimeters margin, (Figure) Two cylinder in front of the group, both ends of the car to go to the margin and the processing of the welding bevel. In the past this job has been lathe processing. Lathe processing takes expensive working hours (20 meters car