标 准 编 号： BS 1640-3-1968
简体中文标题：石油工业用钢质对接焊管配件规范.锻制碳钢与铁素体合金钢配件:米制件
繁体中文标题：石油工业用钢质对接焊管配件规范.锻制碳钢与铁素体合金钢配件:米制件
English Name：Specification for steel butt-welding pipe fittings for the petroleum industry - Wrought carbon and ferritic alloy steel fittings - Metric units