China cold drawn and cold rolled closed end structural steel tube
Product Description
| Material | Carbon Steel and Alloy Steel |
| Section Shape | Round |
| Crfat | Cold drawn |
| Size | 25.4*3 |
| Material | 4130/30CrMo |
| Seamless Steel Tube Standard | DIN2391, DIN17175, ASTM A106, ASTM A213, ASTM A53, ASTM A312, ASTM A179, SAE 4130. JIS G3445, JIS G3444, JIS G 3461, JIS G3441, JIS G3454 etc |
| Mechanical property | Tensil strength: 651Mpa, Yield strength:548-554Mpa, Elongation: 30% |
| Packing Details | 1.Internal wrapped with plastic film. External wrapped with woven bags. 2. wooden boxes to pack. 3. Iron stand. |
| Certification | ISO9001 |
| Delivery condition | Annealing after BK |
| Length | 1-12m as customer's requestment |
| Tolerance | OD tolerance: +/-0.1mm, ID tolerance: +/-0.1mm |
Chemical Component:
| Steel Grade | 碳 C | 硅 Si | 锰 Mn | 硫 S | 磷 P | Cr | 镍 Ni | 铜 Cu |
| 30CrMo | 0.26-0.34 | 0.17-0.37 | 0.40-0.70 | ≤0.035 | ≤0.035 | 0.80-1.10 | ≤0.30 | ≤0.30 |
| SCM430 | 0.28-0.33 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.030 | 0.90-1.20 | ≤0.25 | ≤0.30 |
| 4130 | 0.28-0.33 | 0.15-0.35 | 0.40-0.60 | ≤0.040 | ≤0.035 | 0.80-1.10 | ≤0.030 | ≤0.030 |
The production flow chart of seamless steel tube:
Cold drawn seamless steel tube images
The Chemical composition comparison sheet:
| Steel Grade | C | Si | Mn | S | P | Cr | Ni | Cu |
| 1010 | 0.08-0.13 | 0.15-0.35 | 0.30-0.60 | ≤0.030 | ≤0.030 | ≤0.20 | ≤0.25 | ≤0.25 |
| STKM 11A | ≤0.12 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 | |||
| 1020 | 0.17-0.23 | 0.15-0.35 | 0.30-0.60 | ≤0.050 | ≤0.040 | |||
| STKM13A | ≤0.25 | ≤0.35 | 0.30-0.90 | ≤0.20 | ≤0.040 | ≤0.040 | ||
| A106 Gr.B | ≤0.25 | ≤0.10 | 0.29-1.06 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.40 | ≤0.40 |