管和型材 meaning in English

standard specification for aluminum and

Specification for cast poly methyl methacrylate plastic rods , tubes and shapes
注塑聚甲基丙烯酸甲酯塑料棒管和型材规范
Its original company was xishan jincheng radiator factory , which was the exclusive and largest domestic supplier of precision drawn tubes and profiles for automotive industry at that time
其前身为锡山金城散热管厂，当时中国车用铝管和型材唯一且最大的供应商。