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1.“Dianond" brand ductile iron pipes are peoduced in accordance with the international standard ISO2531 or the BRITISH STANDARD BS4772, we provide service od zing coating, internal lining of cement and flame plation of bitumen, if required.
“钻石”牌球墨铸铁管按照国际标准ISO2531/英国标准BS4772生产，我公司根据用户需要进行喷锌、内壁衬水泥、沥青涂料等服务。收藏指正
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