| 产品名称 | 不锈钢焊管 | 标准： | ASTM A312 / ASME SA312 |
|---|---|---|---|
| 材料等级： | TP304，TP304L，TP316L，TP321，TP321H，TP310 等。 | Welded Size: | 1/2′ NB – 16′ NB |
| 厚度 | SCH20， SCH30， SCH40， STD， SCH80， XS， SCH60， SCH80， SCH120， SCH140， SCH160， XXS | 无损检测： | ET， HT， PT |
| 申请： | Heat Exchanger And Oil Field Piping， Etc | ||
| 强光 | 304L Stainless Steel Welded Pipe， ASME SA312 Stainless Steel Welded Pipe， Heat Exchanger Polished Stainless Steel Pipe | ||
ASTM A312 (ASME SA312) TP304 Stainless Steel for Petrochemical Application
同创集团 我们经营不锈钢和钢管已超过 33 年，每年销售超过 80000 吨不锈钢和钢管。我们的客户已覆盖 65 个国家。我们的不锈钢管广泛应用于矿业、能源、石化、化工、食品厂、造纸厂、气体和流体行业等。
The ASTM A312 TP304 Pipe is used for high pressure and high temperature applications because of the high operating temperature of 870 degrees Celsius and the strength. The minimum yield strength of the SS UNS S30400 ERW Pipe is 205MPa and the minimum tensile strength is 515MPa. The applications include commercial， industrial， domestic and general corrosive services. The ASME SA312 Grade 304 Welded Pipe is one of the most cost effective stainless steel pipes in the market. These are also the most used of stainless steel pipes in the world.
The standard specifications include seamless， straight seam welded and heavily cold welded austenitic stainless steel tubing for high temperature and general corrosive service. There are several grades in this standard， and each steel grade shall confirm to the required chemical composition of C， Mn， P， S， Si， Cr and Cr， Ni， Mo， etc. All the pipes shall be furnished in the heat-treated condition in accordance with the required heat treating temperature and cooling/testing requirements. And also need to comply to the required tensile strength and yield strength.
化学成分要求
| 要素 | 组成 for TP304， % | 组成 for TP304L， % |
| C | ≤0.08 | ≤0.035 |
| 锰 | ≤2.00 | ≤2.00 |
| P | ≤0.045 | ≤0.045 |
| S | ≤0.030 | ≤0.030 |
| Si | ≤1.00 | ≤1.00 |
| Cr | 18.0~20.0 | 18.0~20.0 |
| 莫 | 8.0~11.0 | 8.0~13.0 |
*UNS designation of TP304: S30400; UNS designation of TP304L.
机械性能
| 拉伸要求 | TP304 | TP304L |
| 拉伸强度 最小值兆帕 [ksi] | 515 [75] | 485 [70] |
| 屈服强度 最小值兆帕 [ksi] | 205 [30] | 170 [25] |
| 伸长率 2"，最小， % (*L) | 35 | 35 |
| 伸长率 2"，最小值， %(*T) | 25 | 25 |
Physical properties of 304 grade stainless steel in the annealed condition
| 等级 | 密度（千克/立方米） | 弹性模量（GPa） | 平均热膨胀系数 (μm/m/°C) | 导热系数（瓦/米.K） | 比热 0-100°C (J/kg.K) | 电阻率（nΩ.m） | |||
| 0-100°C | 0-315°C | 0-538°C | 100°C 时 | 在 500°C 时 | |||||
| 304/L/H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
等效成绩
| 标准 | WERKSTOFF NR. | UNS | JIS | BS | EN |
| 304 | 1.4301 | S30400 | SUS 304 | 304S31 | X5CrNi18-10 |
| 304L | 1.4306 | S30403 | SUS 304L | 304S11 | X2CrNi19-11 |
| 304H | 1.4306 | S30409 | – | 304S51 | X6CrNi18-11 |
应用
- 化学和石化加工
- 石油和天然气工业
- 食品加工
- 水处理
- Construction and Architecture
- 汽车行业
- Exhaust Systems
- 发电
- Aircraft and Aerospace Applications
- 热交换器
- Instrumentation and Control Systems
