[ 표 UW-12 ] 용접 조인트의 최대 허용 조인트 효율 Type No. 1 Butt joints as attained by double‐welding or by other means that will obtain the same quality of deposited weld metal on the inside and outside weld surfaces to agree with the requirements of UW-35. Welds using metal backing strips that remain in place are excluded. (제자리에 남아있는 금속 백킹 스트립을 사용하는 용접은 제외됩니다.) Type No. 2 Single‐welded butt joint with backing..
