1. Production range: DN 50 MM-DN 800MM
2. Material Grade
2.1 The steel used for the mould: DIN17350, and the steel: 21CrMo10.
2.2 Steel_ making method: Basic arc furnace and ladle refining furnace refining melted (vacuum degassed)
2.3 Ultrasonic flaw detection
The forging of the mould will be ultrasonically tested as per JB/T1581-1996, and the grade of the detection is in the following:
A. Without bursts, crack, shrinking hole and other defects.
B. The defect with size within 2mm can be ignored.
C. Individual defect with diameter of φ 2~φ 4mm is permitted, and the distance of the neighboring defects should be more than the 10 times of the bigger one's. For 100cm2' s area, the quantities of the defects with diameter of φ 2~φ 4mm should not exceed 3.
D There should not have compact district.
3. Mechanical Properties
3.1 The place of sampling is the 1/2 of the forging's wall thickness, and there will be two tensile test specimen in the direction of longitudinal
3.2 The method of the experiment
The tensile test as per GB/T288-2002.
4. The hardness of heat treatment: HB 240~280
And the experiment of hardness is as per GB/T231.
The above is the general information for pipe mould, if your requirements are different, please let me know, we will see whether our manufacturing technique can reach it. We will provide you a good price and delivery time.
| C | Si | Mn | P | S | Cr | Mo | Cu |
| 0.16-0.23 | 0.20-0.40 | 0.20-0.40 | 0.011 | 0.009 | 2.20-2.60 | 0.30-0.50 | 0.2 |
Lifespan of pipe mould
| Sequence No. | Mould size. In mm | Lowest lifespan in PCS |
| 1 | DN 50-150 | 3000 |
| 2 | DN 200-300 | 2800 |
| 3 | DN 350 | 2000 |
| 4 | DN 400-600 | 1500 |
| 5 | DD 600-800 | 1200 |
the parameter of the performance
| Parameter | R ψ \MPa | RP0.2\Mpa | A\% | Z\% |
| Index | 750~850 | ≥650 | ≥ 16 | ≥60 |
Our company can also provide the forging products like you such as high quality structural alloy steel, bearing steel, tool and mold steel, heat-resisting steel, high speed steel etc. As per GB, ASTM, DIN, JIS, BC specification with the solid bars, hollow bars, square bars, shaft, rings and other shapes forgings.
We have very strong machining and heat-treating capacity.
