原文：
2.1 在阀门制造厂内的检查 买方将在订单中规定要在阀门制造厂内检查阀门并且睹阀门的检验和试验，在履行购货合同期间，买方检查员可随时进入制造厂内与阀门制造有关的任何部门。 2.2 在阀门制造厂外的检查 当买方规定，检查包括在阀门制造厂外制造的壳体部件时，这些部件应在其制造地接受买方检查。 2.3 检查通知 当规定由买方检查时，阀门制造厂应在进行需要的阀门试验和规定的补充检查或检验前5个工作日，按订单中所列地址通知买方，如需要厂外检查时，阀门制造厂也应提前5个工作日通知买方在何时、何地可对在阀门制造厂外制造的壳体部件进行检查。 2.4 检查范围 检查范围可在订单中规定，除另外说明外，检查应限于下列各项。 a.在装配过程中对阀门进行检查，以保证符合订单中的规定，检查可包括使用规定的无损检验方法。 b.现场目睹需要和规定任选的压力试验和检验。 c.现场目睹任何补充检验。 d.审查加工记录和无损检验记录（包括规定的射线检验记录） 2.5 检验 2.5.1 阀门制造厂应对所有的阀体、阀盖和密封件的铸件进行外观检验，以保证符合MSS SP-55的规定。 2.5.2 阀门制造厂应对每台阀门进行检验，以保证符合本标准和引用的采购规范（如API 600 见1.2.2节） 2.5.3 所有的检验均应按根据相应标准编制的书面程序进行。 2.6 补充检验 各种补充检验仅在订单中规定时，并仅在规定范围内进行。铸钢件或锻钢件的磁粉检验，射线检验，液体渗透检验和超声波检验应符合ASME B16.34第8章或买方自己的程序和验收准则，如有这样的规定。这些检验应在买方检查员现场目睹的情况下，由阀门制造厂进行。

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2.1 in the check valve manufacturer Buyer will be provided in order to check in the valve factory valves valves and see the inspection and testing, in the performance of the purchase contract period, the buyer into the factory inspectors may at any time within any of the valve manufacturing sector. 2.2 check valve factories, When the buyer provides inspection, including the valve factory and outside the shell components, these components should accept the buyer's inspection of its manufacturing. 2.3 The inspection notice When provided by the buyer to check the valve factory valves need to be doing testing and additional inspection or testing required before the 5 working days, by order notify the buyer listed in the address, if necessary outside the factory inspection, the valve manufacturers should also notify the buyer within 5 working days in advance when and where to plant outside in the valve components manufactured housing inspection. 2.4 The scope of the inspection Scope of the inspection requirement in order, unless otherwise stated, inspections should be limited to the following. a. In the assembly process of the valve be examined to ensure compliance with the provisions of orders, inspection requirements may include the use of non-destructive testing methods. b. the scene witnessed the need and provided for optional pressure test and inspection. c. any additional tests witnessed the scene. d. review of processing records and non-destructive inspection records (including the provisions of the ray inspection records) 2.5 Inspection 2.5.1 deal with all of the body the valve manufacturer, valve covers and seals the cast for appearance inspection to ensure compliance with MSS SP-55 requirements. 2.5.2 Each valve factory valves should be inspected to ensure compliance with this standard and referenced procurement specification (eg API 600, see section 1.2.2) 2.5.3 All testing shall be prepared in accordance with standards under the relevant written procedures. 2.6 Supplementary test Complementary tests only in the order requirements, and only within the specified scope. Cast steel or forged steel parts of the magnetic particle inspection, radiographic testing, liquid penetration testing and ultrasonic testing shall comply with ASME B16.34 Chapter 8 or the buyer with their own procedures and acceptance criteria, if any such provision. These tests should be witnessed in the buyer's inspector on-site case, conducted by the valve manufacturer.