标 准 号：BS EN 12560-7-2004简体中文标题：法兰及其接头.分级标示法兰用垫圈.钢法兰用涂覆金属的套层垫圈繁体中文标题：法兰及其接头.分级标示法兰用垫圈.钢法兰用涂覆金属的套层垫圈English Name：Flanges and their joints - Gaskets for class-designated flanges - Covered metal jacketed gaskets for use with steel flanges...