External pressure has been significantly reduced, and there is a solid foundation for the RMB exchange rate to remain basically stable
Continued activity! In the first eight months, my country's foreign trade operators with import and export performance reached 630,000
More information about Standard of En10204
Difference between 3.2 and 3.1 certificates
|
Grade |
C |
Mn |
P≤ |
S≤ |
Si |
Cr |
Mo |
|
1020 |
0.18-0.23 |
0.30-0.60 |
0.04 |
0.05 |
- |
- |
- |
|
1025 |
0.22-0.28 |
0.30-0.60 |
0.04 |
0.05 |
- |
- |
- |
|
4130 |
0.28-0.33 |
0.40-0.60 |
0.04 |
0.05 |
0.15-0.35 |
0.80-1.10 |
0.15-0.25 |
|
4140 |
0.38-0.43 |
0.75-1.00 |
0.04 |
0.05 |
0.15-0.35 |
0.80-1.10 |
0.15-0.25 |
|
Grade |
Condition |
MPa Tenslle Point |
Yield Point |
Elongation |
|
1020 |
CW |
≥414 |
≥483 |
≥5% |
|
|
SR |
≥345 |
≥448 |
≥10% |
|
|
A |
≥193 |
≥331 |
≥30% |
|
|
N |
≥234 |
≥379 |
≥22% |
|
1025 |
CW |
≥448 |
≥517 |
≥5% |
|
|
SR |
≥379 |
≥483 |
≥8% |
|
|
A |
≥207 |
≥365 |
≥25% |
|
|
N |
≥248 |
≥379 |
≥22% |
|
4130 |
SR |
≥586 |
≥724 |
≥10% |
|
|
A |
≥379 |
≥517 |
≥30% |
|
|
N |
≥414 |
≥621 |
≥20% |
|
4140 |
SR |
≥689 |
≥855 |
≥10% |
|
|
A |
≥414 |
≥552 |
≥25% |
|
|
N |
≥621 |
≥855 |
≥20% |
|
Wall % of OD |
Wall Tolerances Max % Over and Under Nominal Wall |
|
|
ID up to 1.499" |
ID 1.500" and larger |
|
|
Under 25% |
+/- 10.0% |
+/- 7.50% |
|
Over 25% |
+/- 12.5% |
+/- 10.0% |
|
Wall Thickness Tolerance (ASTM A519 HRS Alloy) |
|||
|
Wall Thickness Range as a Percent of Outside Diameter |
% Over and Under Nominal Wall |
||
|
OD up to 2.999" |
OD 3.00"- 5.999" |
OD 6.00"- 10.750" |
|
|
Walls Under 15% of nominal O.D. |
12.50% |
10.00% |
10.00% |
|
Walls Over 15% of nominal O.D. |
10.00% |
7.50% |
10.00% |
|
Outside Diameter Size Range |
Wall percent of Outside Diameter |
Total Camber in any 3 ft. |
|
Up to 5.000" |
3% OD & Over |
0.030" |
|
5.001 / 8.000" |
4% OD & Over |
0.045" |
|
8.001 / 10.750" |
4% OD & Over |
0.060" |
