| GB |
ASTM/ASME |
DIN |
EN |
JIS |
| GB/T8162 |
10 |
A53 |
A |
DIN1629 |
St37 |
EN17121 |
St37-2/3 |
G3454 |
STPG370 |
| GB/T8163 |
A106 |
A |
| GB/T3639 |
A519 |
1010 |
| |
20 |
A53 |
B |
DIN1629 |
St44 |
EN17121 |
St44-2/3 |
G3454 |
STPG410 |
| |
A106 |
B |
| |
A519 |
1020 |
| |
45 |
A1045 |
|
|
CK45 |
|
|
|
|
| |
Q235 |
A519 |
1021 |
|
|
EN10210-1 |
S235JRH |
G3444 |
STK400 |
| |
EN1097-1 |
E235 |
|
|
| |
Q345 |
A519 |
1524 |
DIN1629 |
St52 |
|
|
G3444 |
STK500 |
| |
37Mn5 |
J55 |
|
|
|
|
|
|
|
| |
35CrMo |
|
4135 |
|
|
|
|
G4105 |
SCM435 |
| |
20Cr |
|
5120 |
|
|
|
|
|
SCr420 |
| |
40Cr |
|
5140 |
|
|
|
|
|
SCr440 |
| |
15CrMo |
|
|
|
|
|
|
|
SCM415 |
| |
20CrMo |
|
4119 |
|
|
|
|
|
SCM420 |
| |
42CrMo |
|
4150/4142 |
|
|
|
|
|
SCM440 |
| |
20CrMnTi |
|
|
|
|
|
|
|
SMK22 |
| tandard |
Grade |
Chemical composition:(%) |
| C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Mo |
Cu≤ |
Ni≤ |
Ti |
V |
Nb |
| GB/T 699 |
10 |
0.07~0.13 |
0.17~0.37 |
0.35~0.65 |
0.035 |
0.035 |
≤0.15 |
|
0.25 |
0.3 |
|
|
|
| 20 |
0.17~0.23 |
0.17~0.37 |
0.35~0.65 |
0.035 |
0.035 |
≤0.35 |
|
0.25 |
0.3 |
|
|
|
| 35 |
0.32~0.39 |
0.17~0.37 |
0.50~0.80 |
0.035 |
0.035 |
≤0.25 |
|
0.25 |
0.3 |
|
|
|
| 45 |
0.42~0.50 |
0.17~0.37 |
0.50~0.80 |
0.035 |
0.035 |
≤0.25 |
|
0.25 |
0.3 |
|
|
|
| GB/T3077 |
20Cr |
0.18~0.24 |
0.17~0.37 |
0.50~0.80 |
0.035 |
0.035 |
0.70~1.00 |
|
|
|
|
|
|
| 40Cr |
0.37~0.44 |
0.17~0.37 |
0.50~0.80 |
0.035 |
0.035 |
0.80~1.10 |
|
|
|
|
|
|
| 20CrMo |
0.17~0.24 |
0.17~0.37 |
0.40~0.70 |
0.035 |
0.035 |
0.80~1.10 |
0.15~0.25 |
|
|
|
|
|
| 42CrMo |
0.38~0.45 |
0.17~0.37 |
0.50~0.80 |
|
|
0.90~1.20 |
0.15~0.25 |
|
|
|
|
|
| 20CrMnTi |
0.17~0.23 |
0.17~0.37 |
0.80~1.10 |
|
|
1.00~1.30 |
|
|
|
0.04
~0.10 |
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Size tolerance |
|
|
|
|
|
| OD |
Standard tolerance |
Special tolerance |
| Outer Diameter |
GB/T3639 |
DIN2391 |
EN10305 |
O D |
thickness |
| 4mm-20mm |
±0.10 mm |
±0.08 mm |
±0.08 mm |
±0.05mm |
±0.05mm |
| 20mm-30mm |
±0.10 mm |
±0.08 mm |
±0.08 mm |
±0.08 mm |
±0.08 mm |
| 31mm-40mm |
±0.15 mm |
±0.15 mm |
±0.15 mm |
±0.10 mm |
±0.08 mm |
| 41mm-60mm |
±0.20 mm |
±0.20 mm |
±0.20 mm |
±0.15 mm |
±0.15 mm |
| 61mm-80mm |
±0.30 mm |
±0.30 mm |
±0.30 mm |
±0.20 mm |
±0.20 mm |
| 81mm-120mm |
±0.45 mm |
±0.40 mm |
±0.40 mm |
±0.30 mm |
±0.30 mm |
| Equivalent Material referance: |
| GB |
TOCT |
ASTM |
BS |
JIS |
NF |
DIN |
| 10F |
|
1010 |
040A10 |
|
XC10 |
|
| 10 |
10 |
10,101,012 |
045M10 |
S10C |
XC10 |
C10,CK10 |
| 20 |
20 |
1020 |
050A20 |
S20C |
XC18 |
C22,CK22 |
| 45 |
45 |
1045 |
080M46 |
S45C |
XC45 |
C45,CK45 |
| 30CrMo |
30XM |
4130 |
1717COS110 |
SCM420 |
30CD4 |
|
| 42CrMo |
|
4140 |
708A42 |
|
42CD4 |
42CrMo4 |
| |
|
|
708M40 |
|
|
|
| 35CrMo |
35XM |
4135 |
708A37 |
SCM3 |
35CD4 |
34CrMo4 |
| Material |
10#-45#, 16Mn, A53-A369, Cr-Mo alloy, Q195-Q345, ST35-ST52, 10#, 20#, 45#, 16Mn, A213, A315, 30CrMo, Q195, Q215, Q235, Q345, ST35, St37, St45, St52 |
| Surface |
Black/ Bright |
| Standard |
DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094- 2000, GB/T 8163-1999, JIS G3101 |
| Size |
OD 15mm-70mm |
| Thickness 1-12mm |
| Processing |
Cold rolled/ Cold drawn |
| 1. BK (+C) No heat treatment after last cold forming process. |
| 2. BKW (+LC) After last heat treatment there is a light finishing pass ( cold drawing) |
| 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. |
| 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. |
| 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere. |
| Packing |
Woven bag/ Wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. |
| Delivery time |
Normally 30-40 working days |
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