저런 역할을 하는게 튜브 밴딩이라고 하는데 저 부품은 처음 보긴하네요

https://ko.aliexpress.com/item/1005004894017797.html

https://www.google.com/search?q=%EC%A0%95%EC%88%98%EA%B8%B0+%ED%98%B8%EC%8A%A4+%ED%94%8C%EB%A1%9C%EC%9A%B0+%EB%B2%A4%EB%93%9C+90%EB%8F%84%EC%97%98%EB%B3%B4&sca_esv=1a28dc1a6e7e6465&udm=2&biw=1096&bih=483&sxsrf=APpeQntrslUVYHn0H1UJo-zXLjLC4Zzj6Q%3A1782385766526&ei=Zgw9at_UH_n02roP-JSMGA&ved=0ahUKEwjfn92zoKKVAxV5ulYBHXgKAwMQ4dUDCBM&oq=%EC%A0%95%EC%88%98%EA%B8%B0+%ED%98%B8%EC%8A%A4+%ED%94%8C%EB%A1%9C%EC%9A%B0+%EB%B2%A4%EB%93%9C+90%EB%8F%84%EC%97%98%EB%B3%B4&gs_lp=Egtnd3Mtd2l6LWltZyIt7KCV7IiY6riwIO2YuOyKpCDtlIzroZzsmrAg67Kk65OcIDkw64-E7JeY67O0SKIPUABYAHAAeACQAQCYAZgBoAGYAaoBAzAuMbgBDMgBAPgBAvgBAZgCAKACAJgDAJIHAKAHDLIHALgHAMIHAMgHAIAIAQ&sclient=gws-wiz-img

벽쪽 배관 재질이 뭔지 정확치 않으나..그냥 식음용 퀵커넥터 엘보우 피팅 3/8 쓰시면 되어보이는데요? 저 회색 자재는 피팅 안쓰려고 튜빙 가이드라는걸 쓴거니...