" Clarification on the applicability of Welding Neck Flanges in UG-44(b) " UG-44(b)에 따른 Welding Neck Flange 적용 범위 Question With reference to the above, we would like to inquire whether the term “welding neck flanges” specified in UG-44(b) includes Long Welding Neck Flanges.Our understanding, based on prior discussion with the client, was that UG-44(b) applies only to Welding Neck Flanges subject..