China National Standards

China keystone GB Standards List


  •  China "keystone" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 1149.12-2013 Internal combustion engines―Piston rings―Part 12: Half keystone rings made of steel
    内燃机 活塞环 第12部分:楔形钢环
    China National Standards
    keystone

    English PDF
    GB/T 1149.10-2013 Internal combustion engines-Piston rings―Part 10: keystone rings made of steel
    内燃机 活塞环 第10部分:梯形钢环
    China National Standards
    keystone

    English PDF
    GB/T 1149.11-2010 Internal combustion engines - Piston rings - Part 11: Half keystone rings made of cast iron
    内燃机 活塞环 第11部分:楔形铸铁环
    China National Standards
    keystone

    English PDF
    GB/T 1149.9-2008 Internal combustion engines - Piston rings - Part 9: keystone rings made of cast iron
    内燃机 活塞环 第9部分:梯形铸铁环
    China National Standards
    keystone

    English PDF

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