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난방 파이프의 내경은 얼마인가

2016-10-10View Original

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많은 자료를 찾아봤지만 잘 모르겠어요. 일반적인 난방 파이프의 내경은 보통 얼마인가요?DN20의 내경은 27mm인가요? 업계 관계자분들께서 답변해 주시면 감사하겠습니다. 감사합니다
Reply #22016-10-10
DN20은 내경 20, 외경 25인 파이프입니다
Reply #32016-10-10
아, 감사합니다. 최근에 열량계들을 많이 살펴봤는데, 연결 부분의 내경이 20이 아니더라고요. 좀 이상하네요
Reply #42017-05-20
DN20 파이프의 내경은 20mm입니다

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