请教 关于API的知识
<table cellSpacing=0 cellPadding=0><tbody><tr><td class=t_msgfont id=postmessage_144961>最近公司在申请API<span class=t_tag onclick=tagshow(event) href="tag.php?name=%C8%CF%D6%A4">认证</span>，由于我也是头一次接触，所以想来<span class=t_tag onclick=tagshow(event) href="tag.php?name=%C2%DB%CC%B3">论坛</span> 听听有经验的各位有什么建议；<br /><br />希望有能力的<span class=t_tag onclick=tagshow(event) href="tag.php?name=%C5%F3%D3%D1">朋友</span>能贴上带有API会标控制<span class=t_tag onclick=tagshow(event) href="tag.php?name=%B3%CC%D0%F2">程序</span>的<span class=t_tag onclick=tagshow(event) href="tag.php?name=%CE%C4%BC%FE">文件</span>，让我参考参考</td></tr></tbody></table> <h1>API认证</h1>API背景介绍 <br /> API是美国石油学会（American Petroleum Institute）的英文缩写。API建于1919年，是美国第一家国家级的商业协会，也是全世界范围内最早、最成功的制定标准的商会之一。<br /> API的一项重要任务，就是负责石油和天然气工业用设备的标准化工作，以确保该工业界所用设备的安全、可靠和互换性。制定协调标准是API最早和最成功的项目之一，自1924年发布第1个标准开始，API现在已发布了500个标准。API是ANSI认可的标准制定机构，其标准制定遵循ANSI的协调和制定程序准则，API还与ASTM联合制定和出版标准，此外，API积极参加适合全球工业的ISO标准的制定工作，是ISO/TC 671SC9井口设备和管线阀门的秘书处。<br /> API标准应用广泛，不仅在国内被企业采用和被美国联邦和州法律法规以及运输部、国防部、职业安全与健康管理局、美国海关、环境保护署、美国地质勘查局等政府机构引用，而且也在世界范围内被ISO、国际法制计量组织和100多个国家标准所引用。<br /> API标准主要是规定设备性能，有时也包括设计和工艺规范，标准制定领域包括石油生产、炼油、测量、运输、销售、安全和防火、环境规程等，其信息技术标准包括石油和天然气工业用EDI、通信和信息技术应用等方面。 <br /> API在美国国内以及在世界其他国家都享有很高的声望，它是美国商业部和美国贸易委员会承认的石油机械认证机构。它所制定的石油化工和采油机械技术标准被许多国家采用，中东、南美和亚洲许多国家的石油公司在招标采购石油机械时，一般都要求佩有API标志的产品才能有资格参加投标。因此，拥有API标志的石油机械设备不仅被认为是质量可靠而且具有先进水平。目前，在包括勘探和生产、运输、精炼和市场营销等各个方面拥有来自全世界的会员。今天，API已发展成为不仅在美国，而且越来越多地成为世界石油工业活动的有机组成部分。<br /> API标志及其使用权 <br /> API会标是美国石油学会的学会产品标志，始于1924年，目的是为了鉴定生产的设备、材料，并提供能符合API质量体系和产品标准的生产企业。该标志经美国注册登记，未经许可任何人不得使用。 <br /> API取证即通过一个申请、检查、确认程序，有API向产品技术商符合API产品规范、质量保证体系（ISO9000）符合API质量纲要规范的制造厂授予证书，允许制造厂在其产品上使用API会标标志。API取证的实质是商标转让使用的授权活动。 <br /> API对会标的说明 <br /> (1)只授予通过API认证的制造厂 <br /> (2)不是对制造厂的担保 <br /> (3)不是对设计的赞同 <br /> (4)不是对产品的担保 <br /> (5)制造厂保证经确认的产品，每一个都符合制造时的API规范 <br /> (6)API承认制造厂在遵守制定的API标准方面受到了API的信任 <br /> API取证流程及文件准备 <br /> I. 企业寻找到符合自己要求的咨询机构，需要首先完成以下表格及文件：<br /> a.制造厂申请 <br /> b.API证书协议 <br /> c.取证信息表<br /> 咨询机构明确企业的详细需求之后，与API总部取得联系，索取相应的标准并转交申请<br /> 咨询机构对企业进行培训，内容包括：<br /> d.API规范<br /> e.文件编写要求<br /> II. 在咨询机构的指导下，企业编写文件化质量管理体系，包括： <br /> f.质量手册<br /> g.管理程序文件<br /> h.与质量管理相关联的其它作业文件<br /> 咨询机构负责所有文件的审核，并将《质量手册》翻译成英文版本<br /> 企业管理者批准、发布质量体系文件<br /> 企业在咨询机构的协助下，对管理、技术及市场人员进行培训<br /> III. 由咨询机构协助邀请API派评审员进行现场审核，现场审核的具体分为二步： <br /> 第一步，API质量程序工作人员将按照API Q1规范的要求，以及企业申请的I产品规范。对企业的质量手册进行格式审查。<br /> 第二步，在质量手册获得认可之后，API将在制造厂和API都方便时安排一次现场审查，审查费由制造厂承担。<br /> API审核人员将根据评审期间，验证API质量标准的各项符合性，所获得的客观依据来决定是否发证。<br /> IV. 如现场审核过程中发现问题，企业应及时采取纠正措施，并提出预防方案。纠正措施和预防方案需要得到API审核员的再次审验。<br /> API在审核员签字认可后，颁发有效期为三年的会标使用许可证书。<br /> 企业通过API认证可以巩固、完善质量体系，提高产品质量。<br /> 在认证过程中，咨询机构负责与API之间全部的联系、催办、监督、服务跟踪及关系协调工作。<br /> API取证费用 <br /> API取证过程中，需要向美国石油协会支付的申请费用如下： <br /> •第一种产品（认证覆盖的产品）申请费2950美元 <br /> •第二种产品申请费1850美元 <br /> •第三种产品以后申请费650美元 <br /> •外加3%的银行手续费 <br /> •审核费为450-600美元/人*天；（一般去1名审核员审核3天，企业规模大相应增加审核人*天数，该费用包含审核员往返食宿、差旅费。惹企业规模较大，申请证书较多，则需再延长1-2天） <br /> •根据惯例，企业的申请文件、《质量手册》和申请费用，均不归还。 <br /> 由远诚咨询协助邀请API派评审员进行现场审核，现场审核的具体分为二步： <br /> 第一步，API质量程序工作人员将按照API Q1规范的要求，以及企业申请的I产品规范。对企业的质量手 <br /> 册进行格式审查。 <br /> 第二步，在质量手册获得认可之后，API将在制造厂和API都方便时安排一次现场审查，审查费由制造厂承 <br /> 担。 <br /> API审核人员将根据评审期间，验证API质量标准的各项符合性，所获得的客观依据来决定是否发证。 <br /> 四、如现场审核过程中发现问题，企业应及时采取纠正措施，并提出预防方案。纠正措施和预防方案需要 <br /> 得到API审核员的再次审验。 <br /> API在审核员签字认可后，颁发有效期为三年的会标使用许可证书。 <br /> 企业通过API认证可以巩固、完善质量体系，提高产品质量。 <br /> 在认证过程中，BYCSR咨询负责与API之间全部的联系、催办、监督、服务跟踪及关系协调工作。 <br /> API中国取证企业名单 <br /> 截至2004年9月1日，中国已有293家企业通过API规范认证，这些企业的名单如下：<br /> 1st Machinery Works of North China Petroleum<br /> 3H (Shanghai) Petroleum Equipment Co., Ltd.<br /> ABB Vetco Gray Petroleum Equipment (Shanghai) Co., Ltd.<br /> Anhui Tunxi High Pressure Valve Factory<br /> Anshan Aotong Steel Pipe Plant<br /> Anshan Dragon Pipe Industries Co., Ltd.<br /> Baoji Oilfield Machinery Co., Ltd.<br /> Baoji Petroleum Steel Pipe Co., Ltd.<br /> Baoji Rigor Petroleum Machinery Co. Ltd.<br /> Baoji-SMI Petroleum Steel Pipe Corporation<br /> Baoyi Valve Group Co., Ltd.<br /> Beijing Petroleum Machinery Factory<br /> Beric-Davis Companies International, Ltd.<br /> Beric-Davis Companies International, Ltd.<br /> Bohai NKK Drill Pipe Co., Ltd.<br /> Bohai Oil Engineering Company<br /> Boteli Valve Group Co., Ltd.<br /> Cangzhou OCTG Co., Ltd. of Huabei Oilfield<br /> Cangzhou Xinyuantai Steel Pipe Mill Co., Ltd.<br /> Changge Yulong Pipe Products Co., Ltd.<br /> Changqing Petroleum Exploration Bureau Machinery Manufacture Plant<br /> Changshu Jichang Petroleum Machinery Manufacturing Co., Ltd.<br /> Chengde Kingdream Petroleum Machinery Co. Ltd.<br /> Chengdu Best Diamond Bit Co. Ltd.<br /> Chengdu Chengfeng Valve Co., Ltd.<br /> Chengdu Chuankong Valve Co., Ltd.<br /> Chengdu High Pressure Valve Plant<br /> Chengdu Mechanical Works of Sichuan Petroleum Administration<br /> China Gaoneng Valve Co., Ltd.<br /> China KCM Valve Co., Ltd.<br /> China Liangjing Group Co., Ltd<br /> China Oilfield Services Limited<br /> China Shiyuan Valve Manufacturing Co., Ltd.<br /> China South Valve Group Manufacture Co., Ltd.<br /> China Sungo Valves Co., Ltd.<br /> China Tefulong Group Co., Ltd.<br /> China Zhongquan Group Co., Ltd.<br /> China-Jiangnan Valve Co., Ltd<br /> Chiwan Sembawang Engineering Co. Ltd.<br /> Chongqing Xin Tai Machinery Ltd.<br /> Chuannan Machinery Manufacturing Plant<br /> Chuanyou Guanghan Honghua Co. Ltd.<br /> Da Feng Valve Plant<br /> Dagang Oilfield Group New Century Machinery Manufacturing Co., Ltd.<br /> Dalian DV Valve Co., Ltd.<br /> Dalian Marine Valve Factory<br /> Daqing Honggang Drilling Tool Factory<br /> Daqing Petroleum Equipment Group<br /> Daqing Rijiu Centralizer Plant<br /> Deyang Huadi Petroleum Equipment Co., Ltd.<br /> Drilling &amp; Production Equipment Plant of Sichuan Petroleum Administration<br /> Drilling Engineering Technology Research Institute of Daqing Petroleum Administration Bureau<br /> Drilling Technology Research Institute, Shengli Petroleum Administrative Bureau, SINOPEC<br /> Drilling Tool Sub-company of Daqing Drilling Technology Services Company<br /> Enflow Industries Inc.<br /> Fenghua City High-Middle Pressure Valves Manufacture Co., Ltd.<br /> Fenghua Hengtong Valves Co. Ltd<br /> Fujian Sanming High &amp; Middle Pressure Valve Factory<br /> Fushun Cement Co. Ltd.<br /> Gaoyou Huaxing Petroleum Manufacturing Co., Ltd.<br /> General Machinery Plant of Shengli Petroleum Administration<br /> Gezhouba Holding Company Cement Plant<br /> Great Valve Manufacturing Co., Ltd.<br /> Guanghan Petroleum Well-Control Equipment Co., Ltd.<br /> Guangzhou Panyu District Dongsu Machinery Co., Ltd.<br /> GuiZhou GaoFeng Machinery Factory<br /> Guizhou Wire Rope Incorporated Company<br /> Hangzhou Donghua Chain General Factory<br /> Hebei Cangzhou Hengtong Tubing Co. Ltd<br /> Heibei Zhongyuan Steel Pipe Manufacture Co., Ltd.<br /> Heilongjiang North Shuangjia Drilling Tools Co., Ltd.<br /> Henan Gaoshan Valve Co., Ltd.<br /> Henan Petroleum Exploration Bureau Machinery Plant<br /> Henan Shangdie Valve Co., Ltd.<br /> Henan Zhongyuan Special Steel Works<br /> Henan Zyzj Petroleum Equipment Co., Ltd.<br /> Hubei Fuxing Science and Technology Co., Ltd.<br /> Hunan Hengyang Steel Tube (Group) Co. Ltd.<br /> Inner Mongolia No. 1 Machinery (Group) Co., Ltd.<br /> Integrated Equipment, Inc.<br /> Jiang Yin Eastern Valve Company, Ltd.<br /> Jianghan Petroleum Machinery Plant<br /> Jiangsu Chang-Bao Steel Tube Limited Co.<br /> Jiangsu Chengde Steel Tube Share Co. Ltd.<br /> Jiangsu Huaneng Cable Co., Ltd.<br /> Jiangsu Jin Shi Machinery Group Co., Ltd.<br /> Jiangsu Rudong General Machinery Company Limited<br /> Jiangsu Rushi Machinery Co. Ltd<br /> Jiangsu Shuguang Drilling Tool Co., LTD.<br /> Jiangsu Shuguang Grant Prideco Tubular Co., Ltd.<br /> Jiangsu Suyan Valve &amp; Pipe Plant<br /> Jiangsu Xianzhong Petroleum Machinery Co., Ltd.<br /> Jiangsu Xinxiang Share Co., Ltd.<br /> Jiangsu Yulong Steel Pipe Co., Ltd.<br /> Jiangyin Chuangxin Oil Pipe Company Ltd.<br /> Jiangyin Xingcheng Special Steel Works Co., Ltd.<br /> Jianhu County Hongda Valve &amp; Pipe Co., Ltd.<br /> Jingbo Petroleum Machinery Plant<br /> Jinxi Steel Pipe Co. Ltd of Lingyuan Iron and Steel Group<br /> Jiyuan Petroleum Machinery Co., Ltd<br /> Ju Long Steel Pipe Co. Ltd.<br /> JUN Valve (Kunshan) Co., Ltd.<br /> KF Industries, Inc.<br /> Kingdom Precision Casting Co., Ltd.<br /> KingDream Public Limited Company<br /> KingDream Public Ltd Company Shanghai Branch<br /> KTM Ball Valve Manufacturing (Sichuan) Co., Ltd.<br /> Kunshan AB Valve Co. Ltd.<br /> Kunshan Valve Co., Ltd.<br /> Lanzhou General Machinery Plant<br /> Lanzhou High Pressure Valve Limited Company<br /> Lanzhou LS-National Oilwell Petroleum Engineering Company Limited<br /> Lanzhou Petroleum &amp; Chemical Machinery Works<br /> Lianyungang Ocean Liquid Loading &amp; Unloading Machine Co., Ltd.<br /> Liaohe Oilfield General Machine Factory<br /> Liaoning Dongyu Oil Pipe Manufacturing Co., Ltd.<br /> Liaoning Jinxi (ASP) Steel Pipe Co. Ltd.<br /> Liaoyang Spiral and Straight Seam Steel Tube Factory<br /> Liaoyang Steel Tube Co., Ltd.<br /> Liaoyang Xingde Large Steel Pipe Plant<br /> Machinery Factory of Jilin Petroleum Group Co., Ltd.<br /> Machinery Factory of Tuha Petroleum Exploration and Development Corporation<br /> Machinery Factory of Tuha Petroleum Exploration and Development Corporation<br /> MSP/Drilex<br /> Mudanjiang City Oriental Diamond Bits Co., Ltd.<br /> Mudanjiang Construction Material Petroleum Machinery Plant<br /> Mudanjiang Petroleum Machinery Co., Ltd.<br /> Mudanjiang Petroleum Tools Co., Ltd.<br /> Mudanjiang Zhongyuan Drilling Co., Ltd.<br /> Nanjing Luzhou Machine Works<br /> Nantong Colves Fluid Control Co., Ltd.<br /> Nantong High &amp; Medium Pressure Valve Factory<br /> Nantong Wire Rope (Group) Co., Ltd.<br /> Nanyang Petroleum Machine Plant<br /> Neway Valve (Suzhou) Co., Ltd.<br /> Ningbo Mayer Steel Pipe Ltd.<br /> Ningbo Sanding Steel Pipe Engineering Co., Ltd.<br /> Ningxia Hengli Steel Wire Rope Co., Ltd.<br /> Norms Engineering Co., Ltd.<br /> North China Petroleum Steel Pipe Co. Ltd.<br /> Northern Steel Pipe Co., Ltd.<br /> Offshore Oil Engineering Co., Ltd.<br /> Oil Well Cement Development Company, Zibo Zhongchang Special Cement Co, Ltd<br /> Outong Group Co., Ltd. (Zhejiang Petrochemistry Valve Co., Ltd.)<br /> P.T. Kvaerner Oilfield Products<br /> Pangang Group Beihai Steel Pipe Corporation<br /> Pangang Group Chengdu Iron &amp; Steel Co., Ltd.<br /> Panyu Chukong Steel Pipe Co., Ltd.<br /> Power Machinery Works of Shengli Petroleum Administration<br /> Precision Pipe Manufacturing Branch of Liaoning Tianyi Industry Co. Ltd.<br /> Puyang City Shuangfa Industry Co., Ltd.<br /> Puyang Zhongshi Group Co., Ltd.<br /> Rongsheng Machinery Manufacture Ltd of Huabei Oilfield, Hebei<br /> Sanmenxia Xinghe Petroleum Equipment Manufacture Co., Ltd.<br /> Seamless Pipe Plant of Angang New Iron &amp; Steel Co., Ltd., Angang Group Co.<br /> Seamless Tube Mill of Baotou Steel Union Co., Ltd.<br /> Shandong Huayin Special Cement Co. Ltd.<br /> Shandong Longkou Special Rubber Hose Co., Ltd.<br /> Shandong Molong Petroleum Machinery Co., Ltd.<br /> Shanghai KVC Valve Co., Ltd.<br /> Shanghai (Jinji Group) Jinji Valve Piping Mfg. Co., Ltd.<br /> Shanghai Alison Steel Pipe Co., Ltd.<br /> Shanghai Dalong Chains Works<br /> Shanghai Fudi Valve Co., Ltd.<br /> Shanghai Gaoneng High Pressure Valve Factory<br /> Shanghai Huatong Valve Co., Ltd.<br /> Shanghai Jinlun Mechanical Industry Co., Ltd.<br /> Shanghai Kai-gong Valve Co., Ltd.<br /> Shanghai Koko Valve Co., Ltd.<br /> Shanghai Liang Gong Valve Factory<br /> Shanghai Lixing Valve Manufacture Factory<br /> Shanghai Meilong Valve Co.<br /> Shanghai Neles-Jamesbury Valve Co., Ltd.<br /> Shanghai Pudong Hanwei Valve Co., Ltd. (Shanghai Hanwei Special Valve Manufacturing Co., Ltd.)<br /> Shanghai Shen Kai Petroleum &amp; Chemical Equipment Co., Ltd.<br /> Shanghai Source Mechanical &amp; Electrical Equipment Co. Ltd.<br /> Shanghai Third Navigation ASP Steel Pipe Co, Ltd.<br /> Shanghai Valve Factory<br /> Shanghai Zhongye Steel Pipe Co., Ltd.<br /> Shanxi Fenglei Machinery Manufacturing Co. Ltd<br /> Shanxi Norin Petroleum Machinery Co. Ltd.<br /> Shashi Steel Pipe Works<br /> Shashi Steel Pipe Works Fiberglass Reinforced Plastic Plant<br /> Shengli Steel Pipe Co. Ltd.<br /> Shengli-Highland Co., Ltd.<br /> Shenjiang Valve Co., Ltd.<br /> Shenyang Shengshi High and Medium Pressure Valve Co., Ltd.<br /> Shenzhen Weisheng I.T.S. Petroleum Tubular &amp; Equipment Co., Ltd.<br /> Shijiazhuang Jiahua Special Cement Co., Ltd.<br /> Si Chuan Huijian Petrochemical Equipment Co., Ltd.<br /> Sichuan Chuanshi Chrida Diamond Bit Co., Ltd.<br /> Sichuan Chuanshi Diamond Bit Co., Ltd.<br /> Sichuan Huagong Petroleum Steel Pipe Co., Ltd.<br /> Sichuan Jiahua Enterprise (Group) Co. Ltd.<br /> Sichuan Kaitz Valve Mfg. Co., Ltd.<br /> Sichuan Keycon Valve Manufacturing Co., Ltd.<br /> Sichuan Petroleum Coring Center<br /> Sichuan Petroleum Perforating Materials Ltd.<br /> Sino-American Shanghai Pacific Pipe Co., Ltd.<br /> Sinopec National Star Corporation Dezhou Petroleum Machinery Factory<br /> Siping Wantong Steel - Pipe Company Limited<br /> SJ Petroleum Machinery Co.<br /> South China Marine Machinery Plant<br /> Sow Long (Valve &amp; Fitting) Co., Ltd. (Long Cheng Valves Co., Ltd.)<br /> Special Vehicle Repairing and Manufacturing Plant<br /> Steel Pipe Factory of Pipeline Bureau, CNPC<br /> Steel Rope Factory of AnGang Group Co., Ltd.<br /> Steel Tube Factory of China Third Metallurgical Construction Corp.<br /> Steel Tube Subcompany Bao Shan Iron &amp; Steel Co., Ltd.<br /> Suzhou High &amp; Medium Pressure Valve Factory<br /> Suzhou KF Valve Co., Ltd.<br /> Suzhou Valve Factory<br /> Taixing Petroleum Machinery Co., Ltd.<br /> Tekval Flow Control (Suzhou) Co., Ltd.<br /> The Drilling Pipe &amp; Tools Service Company of Shengli Oilfield<br /> The Thermal Recovery Equipment Manufactory of Shengli General Engineering…<br /> Tianjin Grant TPCO Drilling Tools Co., Ltd.<br /> Tianjin Huafu Oilfield Chemicals Co., Ltd.<br /> Tianjin Lida Steel Tube Plant<br /> Tianjin Lilin Mechanical Group Co. Ltd.<br /> Tianjin Pipe Company Ltd.<br /> Tianjin Seamless Steel Pipe Plant<br /> Tianjin Shengkai Industrial Technology Development Co., Ltd.<br /> Tianjin Shenzhoutong Steel Pipe Co., Ltd<br /> Tianjin Shuangjie Steel Pipe Co., Ltd.<br /> Tianjin Tubular Goods Machining Co. Ltd.<br /> Tieling Machinery &amp; Equipment Manufacturing Co., Ltd of CNPC<br /> Tonghua City DN Petroleum Machine Co., Ltd.<br /> Tonghua Petroleum &amp; Chemical Machinery Works Ltd.<br /> Tonghua Petroleum Tools Co. Ltd.<br /> TSC (Qingdao) Manufacturing Co., Ltd.<br /> United Offshore Construction Company, CONHW<br /> Universal Wire Rope Co., Ltd.<br /> Wan Chi Steel Pipe (Qinhuangdao) Co., Ltd.<br /> Wenzhou Huanqiu Valve Manufacturing Co., Ltd.<br /> Wenzhou Tingyu Group Co., Ltd.<br /> Wuhan Boiler Group Valve Co., Ltd. (Wuhan Advanced Flow Control &amp; Engineering Ltd.)<br /> Wuxi Erquan Special Steel Tube Co., Ltd.<br /> Wuxi Huaying Valve Manufacturing Co., Ltd.<br /> Wuxi Seamless Oil Pipe Co., Ltd.<br /> Wuxi Seamless Steel Tube Co. Ltd.<br /> Wuxi Universal Steel Rope Co., Ltd.<br /> Wuxi Xishan Valve Plant<br /> Xi'an Pump-Valve Clique Works<br /> Xian Yang Petroleum Steel Tube &amp; Wire Rope Co. Ltd<br /> Xinjiang Petro Administration Bureau Machinery Manufacture General Company<br /> Xinjiang Qingsong Cement Co., Ltd.<br /> Xinjiang Tianshan Cement Co. Ltd.<br /> Xinjiang Tunhe Cement Co., Ltd.<br /> Xuzhou Guanghuan Steel Tube Co. Ltd.<br /> Xuzhou Pipeline Tech Co. of SPSTC<br /> Yancheng City Shuangxin Petroleum Machinery Plant<br /> Yancheng City Xinde Petroleum Machinery Plant<br /> Yancheng City Yancheng Power Station Valve Factory<br /> Yancheng High &amp; Medium Pressure Valve Factory<br /> Yancheng Jiulong Valve Manufacture Co. Ltd.<br /> Yancheng Sanyi Petrochemical Machinery Co., Ltd.<br /> Yancheng Teda Petroleum Machinery Company Ltd.<br /> Yancheng Tongshang Valve Co., Ltd.<br /> Yancheng Yangbiao Petroleum Machinery Plant<br /> Yangzhou Shuangliang Valve Manufacturing Co., Ltd.<br /> Yangzhou Steel Pipe Works<br /> Yantai Lubao Steel Tube Duty Co., Ltd.<br /> Yichun Feilong Rock Bits Manufacture Co., Ltd.<br /> Yongjia County Oubei Ball Valve Factory<br /> Yumen Petroleum Administrative Bureau Machine Plant<br /> Zhangjiakou Exploration Machinery General Factory<br /> Zhe Jiang High &amp; Medium Pressure Valve Plant<br /> Zhe Jiang Wu Zhou Valve Co., Ltd.<br /> Zhejiang Chaoda Valve Co., Ltd.<br /> Zhejiang Fangyuan Valve Manufacturing Co., Ltd.<br /> Zhejiang Fangzheng Valve Factory<br /> Zhejiang Guoda Valve Co., Ltd.<br /> Zhejiang Huadong Valve Co., Ltd. (Haigong Valve Factory of Zhejiang)<br /> Zhejiang Huatai Valve Manufacturing Co., Ltd.<br /> Zhejiang Jiehua Valve Co., Ltd.<br /> Zhejiang Kingland Group Pipe Industry Co., Ltd.<br /> Zhejiang KVT Valve Manufacturing Co., Ltd.<br /> Zhejiang Shangyu Valve Manufacture Co., Ltd.<br /> Zhejiang Weidouli Valves Manufacturing Co., Ltd.<br /> Zhejiang Xinda Electric Power Steel Tube Co., Ltd.<br /> Zhejiang Xinhai Valve Manufacture Co., Ltd.<br /> Zhejiang Xulong Machinery Industry Co., Ltd.<br /> Zhejiang Zhenghua Valve Factory<br /> Zhengmao Group Co., Ltd.<br /> Zhengzhou City Butterfly Valve Factory<br /> Zhongcheng Machinery Manufacture Co., Ltd. of Dagang Oilfield Group<br /> Zhongnan Equipment Company Ltd. (The State-Owned 388th Factory)<br /> Zhongshan Walchamp Steel Pipe Co., Ltd.<br /> Zhongyuan Drill &amp; Production Equipment Plant of Zhongyuan P.E. Bureau<br /> Zibo Hongyang Petroleum Equipment Co., Ltd.<br /> Zigong High Pressure Valve Co., Ltd.<br /> Ziyang Steel Pipe Plant <br />
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