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U20452
Standard GB /T 699-1999 Quality Carbon Structural Steels
Standard GB /T 699-2015 Quality carbon structure steels
Standard GB /T 710-2008 Hot-rolled quality carbon structural steel sheets and strips
Standard JB /T 6908-2020 Steel forings for displacement compressors


Chemical Composition(%)


Standard Material Designation Chemical Composition (%)
GB /T 699-1999
Quality Carbon Structural Steels
45
(U20452)
(45#)
 
Min
Max
GB /T 699-2015
Quality carbon structure steels
45
(U20452)
(45#)
 
Min
Max
JB /T 6908-2020
Steel forings for displacement compressors
45
(U20452)
 
Min
Max
GB /T 710-2008
Hot-rolled quality carbon structural steel sheets and strips
45
(U20452)
(45#)
 
Min
Max
For Reference Only