标 准 编 号：DIN 86090-2008 简体中文标题：与铜镍合金管路对接焊的配件.管弯头繁体中文标题：与铜镍合金管路对接焊的配件.管弯头English Name：Fittings for butt welding into copper-nickel-alloy pipelines - Elbows...