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| RUNLION公司O-Ring 英国标准 ( BS 1516 ) | |||||||
| 型号NO. | 尺寸（ID×C/S） | 型号NO. | 尺寸（ID×C/S） | 型号NO. | 尺寸（ID×C/S） | ||
| BS-1516-1 | 2.90×1.78 | BS-1516-31 | 46.99×5.34 | BS-1516-61 | 142.24×6.99 | ||
| BS-1516-2 | 3.68×1.78 | BS-1516-32 | 50.16×5.34 | BS-1516-62 | 145.42×6.99 | ||
| BS-1516-3 | 4.47×1.78 | BS-1516-33 | 53.34×5.34 | BS-1516-63 | 148.59×6.99 | ||
| BS-1516-4 | 5.28×1.78 | BS-1516-34 | 56.52×5.34 | BS-1516-64 | 151.76×6.99 | ||
| BS-1516-5 | 6.07×1.78 | BS-1516-35 | 59.69×5.34 | BS-1516-65 | 158.12×6.99 | ||
| BS-1516-6 | 7.65×1.78 | BS-1516-36 | 62.86×5.34 | BS-1516-66 | 164.46×6.99 | ||
| BS-1516-7 | 9.25×1.78 | BS-1516-37 | 66.04×5.34 | BS-1516-67 | 170.82×6.99 | ||
| BS-1516-8 | 9.19×2.62 | BS-1516-38 | 69.22×5.34 | BS-1516-68 | 177.16×6.99 | ||
| BS-1516-9 | 10.77×2.62 | BS-1516-39 | 72.39×5.34 | BS-1516-69 | 183.52×6.99 | ||
| BS-1516-10 | 12.37×2.62 | BS-1516-40 | 75.56×5.34 | BS-1516-70 | 189.86×6.99 | ||
| BS-1516-11 | 13.94×2.62 | BS-1516-41 | 78.74×5.34 | BS-1516-71 | 196.22×6.99 | ||
| BS-1516-12 | 15.54×2.62 | BS-1516-42 | 81.92×5.34 | BS-1516-72 | 202.56×6.99 | ||
| BS-1516-13 | 17.12×2.62 | BS-1516-43 | 85.09×5.34 | BS-1516-73 | 215.26×6.99 | ||
| BS-1516-14 | 18.72×2.62 | BS-1516-44 | 88.26×5.34 | BS-1516-74 | 227.96×6.99 | ||
| BS-1516-15 | 18.64×3.53 | BS-1516-45 | 91.44×5.34 | BS-1516-75 | 240.66×6.99 | ||
| BS-1516-16 | 20.22×3.53 | BS-1516-46 | 94.62×5.34 | BS-1516-76 | 253.36×6.99 | ||
| BS-1516-17 | 21.82×3.53 | BS-1516-47 | 97.79×5.34 | BS-1516-77 | 266.06×6.99 | ||
| BS-1516-18 | 23.39×3.53 | BS-1516-48 | 100.96×5.34 | BS-1516-78 | 278.76×6.99 | ||
| BS-1516-19 | 24.99×3.53 | BS-1516-49 | 104.14×5.34 | BS-1516-79 | 291.46×6.99 | ||
| BS-1516-20 | 26.57×3.53 | BS-1516-50 | 107.32×5.34 | BS-1516-80 | 304.16×6.99 | ||
| BS-1516-21 | 28.17×3.53 | BS-1516-51 | 110.49×5.34 | BS-1516-81 | 316.86×6.99 | ||
| BS-1516-22 | 29.74×3.53 | BS-1516-52 | 113.66×5.34 | BS-1516-82 | 329.56×6.99 | ||
| BS-1516-23 | 31.34×3.53 | BS-1516-53 | 116.84×6.99 | BS-1516-83 | 342.26×6.99 | ||
| BS-1516-24 | 32.92×3.53 | BS-1516-54 | 120.02×6.99 | BS-1516-84 | 354.96×6.99 | ||
| BS-1516-25 | 34.52×3.53 | BS-1516-55 | 123.19×6.99 | BS-1516-85 | 367.66×6.99 | ||
| BS-1516-26 | 36.09×3.53 | BS-1516-56 | 126.36×6.99 | BS-1516-86 | 380.36×6.99 | ||
| BS-1516-27 | 37.69×3.53 | BS-1516-57 | 129.54×6.99 | BS-1516-87 | 393.06×6.99 | ||
| BS-1516-28 | 37.46×5.34 | BS-1516-58 | 132.72×6.99 | BS-1516-88 | 413.60×6.99 | ||
| BS-1516-29 | 40.64×5.34 | BS-1516-59 | 135.89×6.99 | ||||
| BS-1516-30 | 43.82×5.34 | BS-1516-60 | 139.06×6.99 | ||||
水务法规咨询计划WRAS（Water Regulations Advisory Scheme）是由英国水务中心WRc-nsf管理和颁发的饮用水安全方面的认证。Water Research Centre——英国水务研究中心，成立于1927年7月，其前身是WPRB (Water Pollution Research Board)水务污染研究机构。它覆盖整个英国。
WRAS认证从材料和配件两部分要求产品符合以下条例：英格兰和威尔士给水系统（给水管件）条例1999、苏格兰水条例2004、北爱尔兰水条例1991。
WRAS认证是通往英国市场的必备许可证明。在国外，凡是与食水接触的产品公司在提供产品时必须验收的手续之一就是查看是否有符合相关标准要求的认证，而WRAS的认可是最有说服力的证明，缺少WRAS认证的产品将不被采纳。凡是通过有关水准鉴定的各项自来水设备、塑胶管道和用具都会得到一个的参考编号，并会获颁发证书，证明已通过有关鉴定；有关编号会被列入自来水设备及用料目录（Water Fittings and Materials Directory）内。该目录每年4月和10月出版。
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