standers of ultrasonic wave: JB/T4730-2005
seam welding appearance: SISO5817:1992C or D Grade
standerds of ultrasonic wave: JB/T4730-2005
seam welding appearance: SISO5817:1992C or D Grade
| Secondary Or Not: | Non-secondary |
| Alloy Or Not: | Non-alloy |
| Application: | Structure Pipe |
| Place of Origin: | Gansu China (Mainland) |
| Thickness: | 6mm~45mm |
| Outer Diameter: | 300mm~1200mm |
| Grade: | API K55, Q235, Q345 |
| Standard: | GB |