DIN EN 751-3:2022-08 与第一、第二和第三族气体和热水接触的金属螺纹接头的密封材料 第3部分:未烧结 PTFE 带和 PTFE 线
Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes and PTFE strings; German version EN 751-3:2022 / Note: This standard is part of the DVGW body of rules.