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低温受压零件用铁素体和马氏体钢铸件检测项目报价? 解决方案? 检测周期? 样品要求? |
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本标准规定了钢制阀门的压力-温度额度值、材料、设计要求、检验与试验、标志和对特殊压力级阀门及限定压力级阀门的要求等内容。本标准适用于承压件采用表1A和表1B给出的材料;阀体采用铸造、锻造滚压、轧制和组焊加工;法兰、螺纹和焊连接,以及对夹式和用于单法兰安装的阀门。本标准包括公称压力为Class系列和PN系列的阀门。本标准适用的钢制阀门参数范围为:a) Class系列阀门的压力等级为Class150~Class4500,其中Class4500仅适用于焊连接阀门;PN系列阀门的压力等级为PN2.5~PN400;b) 法兰连接阀门的公称尺寸不大于DN1250;c) 承插焊接阀门和螺纹连接阀门的公称尺寸不大于DN65;d) 螺纹连接阀门的额定温度不大于538 ℃,压力等级不大于Class2500;e) 法兰连接阀门仅适用于标准压力级,不适用于特殊压力级和限定压力级阀门;f) 法兰连接阀门没有中间压力等级。
注意:按本部分选择的耐蚀合金和其他合金,在油气开采中规定的含硫化氢环境里是抗开裂的,但并不一定在所有的使用环境下都可避免开裂。为预期的使用环境选择合适的耐蚀合金和其他合金是设备使用者的责任。GB/T 20972的本部分给出了在油气开采及天然气处理厂含硫化氢(H
本标准规定了离心式压缩机及辅助设备的设计与制造技术要求、试验方法和检验规则,以及包装、运输等内容。 本标准适用于输送空气或其它气体的离心式压缩机。 本标准不适用于气体升压值低于34kPa的通风机和鼓风机,也不适用于JB 4113标准所指的一般炼油厂仪表空气用整体齿轮增速组装型离心式压缩机。 卖方可提供变通设计(参阅7.1.1.13说明差异的清单)。 经买卖双方同意后,也可采用相当的英制尺寸、紧固件和法兰。 本标准与订货合同相抵触时,抵触部分应以订货合同的规定为准。
本规范适用于水电工程和其他工程钢闸门的制造、安装及验收。本规范规定了水电工程钢闸门(包括拦污栅)制造、安装及验收的技术要求。
本标准规定了承压设备(锅炉、压力容器、压力管道)的对接焊缝和角焊缝焊接工艺评定、耐蚀堆焊工艺评定、复合金属材料焊接工艺评定、换热管与管板焊接工艺评定和焊接工艺附加评定以及螺柱电弧焊工艺评定的规则、试验方法和合格指标。本标准适用于气焊、焊条电弧焊、埋弧焊、钨极气体保护焊、熔化极气体保护焊、电渣焊、等离子弧焊、摩擦焊、气电立焊和螺柱电弧焊等焊接方法。
本标准推荐了阀门主要零件选用的基本材料。本标准适用于灰铸铁、可锻铸铁、球墨铸铁、铜合金、钛合金、碳素钢、高温钢、低温钢、不锈耐酸钢制造的阀门。
本标准规定了阀门用低温钢铸件(以下简称“铸件”)的技术要求、试验方法、检验规则和标志。本标准适用于-254℃~-29℃低温条件下使用的阀门、法兰及其他承压的铸件。
本标准规定了超(超)临界机组金属材料及结构部件检验的内容和技术要求。本标准适用于超(超)临界火电机组金属材料及结构部件的检验。
1.1 This specification covers steel castings for valves, flanges, fittings, and other pressure-containing parts intended primarily for low-temperature service.1.2 Several grades of ferritic steels and one grade of martensitic steel are covered. Selection of analysis will depend on design and service conditions (Note). The temperature shown is the lowest temperature at which the material ordinarily is required to meet the impact requirements of this specification (see Supplementary Requirement S22, Impact Test Temperatures). Users should note that hardenability of some of the grades mentioned may restrict the maximum size at which the required mechanical properties are obtainable (see ).This specification covers the low-temperature requirements particularly pertinent for ferritic and martensitic steels. Certain of the grades of austenitic steel castings furnished in accordance with Specification A 351/A 351M have been found suitable for low-temperature service down to 300F [184C] and others down to 425F [254C]. These grades may be used when impact tested in accordance with Specification A 352/A 352M with energy levels and temperatures of test mutually agreed upon between the purchaser and the manufacturer. As a guide to the selection of energy levels and testing temperatures, should be consulted. 1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. Inch-pound units are applicable for material ordered to Specification A 352 and SI units for material ordered to Specification A 352M.
1.1 This specification covers steel castings for valves, flanges, fittings, and other pressure-containing parts intended primarily for low-temperature service. 1.2 Several grades of ferritic steels and one grade of martensitic steel are covered. Selection of analysis will depend on design and service conditions (Note). The temperature shown is the lowest temperature at which the material ordinarily is required to meet the impact requirements of this specification (see Supplementary Requirement S22, Impact Test Temperatures). Users should note that hardenability of some of the grades mentioned may restrict the maximum size at which the required mechanical properties are obtainable (see Appendix X1). GradeUsual Minimum Testing Temperatures, x00B0;F [x00B0;C] LCAx2212;25 [x2013;32] LCBx2212;50 [x2013;46] LCCx2212;50 [x2013;46] LC1x2212;75 [x2013;59] LC2x2212;100 [x2013;73] LC2x2013;1x2212;100 [x2013;73] LC3x2212;150 [x2013;101] LC4x2212;175 [x2013;115] LC9x2212;320 [x2013;196] CA6NMx2212;100 [x2212;73] Note 18212;This specification covers the low-temperature requirements particularly pertinent for ferritic and martensitic steels. Certain of the grades of austenitic steel castings furnished in accordance with Specification A351/A351M have been found suitable for low-temperature service down to x2212;300x00B0;F [x2212;184x00B0;C] and others down to x2212;425x00B0;F [x2212;254x00B0;C]. These grades may be used when impact tested in accordance with Specification A352/A352M with energy levels and temperatures of test mutually agreed upon between the purchaser and the manufacturer. As a guide to the selection of energy levels and testing temperatures, Appendix X1 should be consulted. 1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are show
This European Standard specifies the following materials for the pressure bearing parts of shell boilers and equipment of shell boilers (e. g. valves), subjected to internal and external pressure including integral attachments (non pressure bearing parts): a) flat products (plate) and parts formed from flat products (e. g. shell, furnace, dished ends); b) tubes and parts formed from tubes (e. g. bending, elbows, reducers, fittings); c) forgings and cast products; d) bolting materials; e) welding consumables.
This International Standard specifies requirements and gives recommendations for the design, manufacturing,testing and documentation of ball check, gate and plug valves for subsea application in offshore pipelinesystems meeting the requirements of ISO 13623 for the petroleum and natural gas industries.This International Standard is not applicable to valves for pressure ratings exceeding PN 420 (Class 2500).
This International Standard specifies requirements and gives recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for subsea application in offshore pipeline systems meeting the requirements of ISO 13623 for the petroleum and natural gas industries.This International Standard is not applicable to valves for pressure ratings exceeding PN 420 (Class 2500).