GB /T 3077-1999 Alloy Structure Steels
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20CrMnTi
(A26202)
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Q/BQB 517-2018 Wire rods for cold heading
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20CrMnTi
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GB /T 8162-2018 Seamless steel tubes for structural purposes
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20CrMnTi
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GB /T 3078-2019 Quality structural steel cold drawm bars
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20CrMnTi
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JB /T 6396-2006 Specification for the heavy alloy structural steel forings
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20CrMnTi
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GB /T 3077-2015 Alloy structure steels
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20CrMnTi
(A26202)
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GJB 1220A-2008 Speification for alloy structure steel bar for artillery parts
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20CrMnTi
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GB /T 37601-2019 Hot rolled steel sheet and strip of alloy structure steel
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20CrMnTi
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