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수행직무
가스공급을 위하여 각종 배관을 연결한다. 수평기를 사용하여 배관의 수평을 측정하고 조정한다. 여러 방향으로 가스를 보내기 위하여 다양한 연결장치를 설치한다. 배관의 연결을 위해 구멍을 뚫고 다른 관을 부착한다. 배관에 공기를 주입한다. 연결부위에 대한 가스누출여부를 검사한다.