Standard | Steel Grade | C | Si | Mn | P | S |
EN 10305-1 | E215 | ≤0.10 | ≤0.05 | ≤0.70 | ≤0.025 | ≤0.025 |
E235 | ≤0.17 | ≤0.35 | ≤1.20 | ≤0.025 | ≤0.025 | |
E355 | ≤0.22 | ≤0.55 | ≤1.60 | ≤0.025 | ≤0.025 | |
DIN 2391 | St35 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 |
St37.4 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St45 | ≤0.21 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |
St52 | ≤0.22 | ≤0.55 | ≤1.60 | ≤0.025 | ≤0.025 | |
GB/T 3639 | 10 | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | ≤0.030 | ≤0.030 |
20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.030 | ≤0.030 | |
35 | 0.32-0.39 | 0.17-0.37 | 0.50-0.80 | ≤0.030 | ≤0.030 | |
45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.030 | ≤0.030 | |
Q345B | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.030 | ≤0.030 |
Precision Seamless Steel Tube Heat Treatment: +C, +LC, +N, +SR
1.--Delivery: 60-70 days after receiving 30% T/T in advance
2.--Payment terms: 30% T/T in advance, the balance 70% paid before shipment.
3.--Packaging: antirust protection, In hexagon bundles
4.--Marks on pipes(tubes): Standard,Steel Grade, Size, Heat No.( or at the buyer's option).
5.--Mill Test Certificate:EN10204 3.1