英国管材有限公司Desford的Eagle钢管厂的第一台轧管机安装于1954年。此轧管机是当时欧洲最初出现的一种型式。它能生产直径为50.8毫米到1 4 6毫米的轴承钢管,其外径公差为:对于外径为76.2毫米以内的管子,其公差为±0.38毫米;对于外径为76.2——101.6毫米的管子,其公差为±0.5毫米;对于外径在101.6毫米以上的管子,其公差为±0.5%。对于直径达1 4 6毫米的 British Pipe Co., Ltd. Desford’s Eagle Steel Tube Plant’s first pipe mill was installed in 1954. This pipe mill was the first type in Europe at the time. It can produce steel pipe diameters from 50.8 mm to 146 mm with OD tolerances of ± 0.38 mm for pipes with an outside diameter of 76.2 mm and tubes of outside diameter 76.2 to 101.6 mm With a tolerance of ± 0.5 mm and a tolerance of ± 0.5% for pipes with an outside diameter of 101.6 mm. For diameters up to 14,6 mm