标 准 号：BS EN 1514-3-1997 简体中文标题：法兰及其连接件.PN-标示的法兰用衬垫的尺寸.非金属PTFE包封衬垫 繁体中文标题：法兰及其连接件.PN-标示的法兰用衬垫的尺寸.非金属PTFE包封衬垫 English Name：Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Non-metallic PTFE envelope gaskets...