BS EN 1904-2000 Precious metals - The finenesses of solders used with precious metal jewellery alloys《贵重金属 贵重金属珠宝合金适焊性》.pdf

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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1904:2000 The Europ

2、ean Standard EN 1904:2000 has the status of a British Standard ICS 39.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Precious metals The finenesses of solders used with precious metal jewellery alloysThis British Standard, having been prepared under the direction of the S

3、ector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 November 2000 BSI 11-2000 ISBN 0 580 34999 3 BS EN 1904:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the

4、 official English language version of EN 1904:2000. The UK participation in its preparation was entrusted to Technical Committee STI/53, Jewellery, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation

5、, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. NOTE The UK has been granted an A-deviation from EN 1904 as some of its requirements conflict with those of the Hallmarking Act 1973. Details are give

6、n in annex ZB to EN 1904. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under th

7、e section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applic

8、ation. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the

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18、UWLFOHVRISUHFLRXVPHWDOBS EN 1904:2000 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

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