| Material |
Alloy Steel |
| Standard or Nonstandard |
Standard |
| Place of Origin |
Hebei China (Mainland) |
| Model Number |
class 150;300;900;1500;2500 |
ANSI:class 150/class300/class900/class1500/class2500 API: class75/class150/class300/class400/class600/class900 DIN:6-bar/10-bar/16-bar/25-bar/40-bar MSS:class150/class300/class400/class600/class900