标 准 号：BS EN 1514-7-2004 简体中文标题：法兰及其连接件.PN标示法兰用垫圈的尺寸.钢法兰用涂覆金属的套层垫圈 繁体中文标题：法兰及其连接件.PN标示法兰用垫圈的尺寸.钢法兰用涂覆金属的套层垫圈 English Name：Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Covered metal jacketed gaskets for use with steel flanges...