1、 What are the Soviet standards for the spring industry

(1) TOCT 17279 Belleville springs for electrical purposes
(2) TOCT13764 Cylindrical Helical Compression and Tension Round Steel Spring
(3) TOCT 16118 Technical Requirements for Cylindrical Helical Compression and Tension Round Steel Springs
(4) TOCT 8578 General Technical Requirements for Valve Springs of Tractor and Combine Diesel Engines
(5) Basic Parameters of Level 1 Cylindrical Helical Compression and Tension Round Steel Spring such as TOCT13767 2
(6) TOCT13765 Cylindrical Helical Compression and Tension Round Steel Spring Parameter Mark and Dimension Determination Method
(7) Basic Parameters of Spiral Circle of Level 1 Cylindrical Helical Compression and Tension Round Steel Spring such as TOCT 13766
(8) Basic Parameters of Level 1 Cylindrical Helical Compression and Tension Round Steel Spring Coil such as TOCT 13768 3
(9) Basic Parameters of Level 1 Cylindrical Helical Compression and Tension Round Steel Spring Coil such as TOCT13769 4
(10) Basic parameters of level 2 cylindrical helical compression and tension round steel spring coil such as TOCT 13770 1
(11) Basic Parameters of Level 2 Cylindrical Helical Compression and Tension Round Steel Spring Coil such as TOCT13771
(12) Basic parameters of Level 2 cylindrical helical compression and tension round steel spring coil such as TOCT 13772 3
(13) Basic parameters of Level 2 cylindrical helical compression and tension round steel spring coil such as TOCT 13773 4
(14) Basic Parameters of Level 3 Cylindrical Helical Compression and Tension Round Steel Spring Coil such as TOCT 13774 1
(15) Basic parameters of level 3 cylindrical helical compression and tension round steel spring coil, such as TOCT 13775
(16) TOCT 13776 Level 3 Cylindrical Helical Compression and Tension Round Steel Spring Helical Circle Basic Parameters 1800000
(17) TOCT 37.00.015 Technical Requirements, Inspection Methods, Acceptance Rules, Packaging, Transportation and Storage of Valve Springs for Automotive Engines