BRITISH STANDARD Copper and copper . . alloys - Seamless, round tubes for heat exchangers e Europe Stdd EN 12451: 1999 has the status of a Bsh Stdd ICS 77.15030 BSEN 12451:1999 注)/•·可忍;;总/,:;:: : 飞?这飞 �』 ?!;三号:;二衍需注h 飞仅 }吨3妇二 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW \巴d段:F叫窑汪;:;;;; u:r Copyright British Standards Institution Provided by IHS under license with BSI No reprodυction or networking permitted without license from IHS Not for Resale www.TubingChina.com