Specifications
Description
North Steel manufactures high precision cold drawn and cold rolled seamless steel tubes for auto parts in transmission, powertrain, steering and suspension systems. With outstanding and stable quality, North Steel is serving a variety of leading domestic and international OEMs as well as mid to high-end aftermarket auto parts manufacturers.
Advantages
Optimized mechanical properties enabling easy bending, flaring, flattening and other processing
Good surface roughness suitable for electrophoresis, coating, galvanization and chroming processing
High precision
Excellent microstructure
Size Range
OD 16-245mm, WT 1-32mm
Executive Standard
GB/T3639, Cold-drawn or cold-rolled precision seamless steel
DIN2391, Seamless precision steel tubes
DIN2393, Welded Precision Steel Tubes
EN10305-1, Steel tubes for precision applications Part 1: Seamless cold drawn tubes
EN10305-2, Cold drawn steel tubes for precision applications Part 2: Welded cold drawn tubes
ASTM A519, Seamless Carbon and Alloy Steel Mechanical Tubing
ASTM A513, Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing
JIS G3445, Carbon Steel Pipe For Mechanical Purpose
JIS G4051, Carbon Steels for Machine Structural Use
According to customer’s specific requirements
Steel Grade
10#, 20#, 35#, 45#, 55#, Q355B, 25Mn, 16MnCr5, 20MnCr5, 30CrMo, 35CrMo, 42CrMo, 20Cr, 40Cr, 20CrNiMo ; ST37, ST45, ST52, 34CrMo4, 42CrMo4 ; E235, E255, E355 ; 1010, 1020, 1026, 1035, 1045, 1050, 4130, 4140, 8620 ; STKM 11A, STKM 12B, STKM 13C, STKM 14B ; S10C, S20C, S35C, S45C and etc.
Delivery Condition
Cold drawn/hard (+C) (BK)
Cold drawn/soft (+LC) (BKW)
Cold drawn and stress relieved (+SR) (BKS)
Annealed (+A) (GBK)
Normalized (+N) (NBK)
Quenched and Tempered (QT)
