Spiral Submerged-arc Welded Quality Assurance
| Excellent Equipment | Quality Control | Pipe Test Centre | Note |
Excellent Equipment:
There are nine modernized product lines in our company with the yield capacity of 1000 thousands tons of B-X80 steel pipe of φ219-φ3200mm, WT5-30mm.
Supercoil Accumulator
SSAW pipe mills
Lincoln Welder Welding
Ultrasonic Inspecting
Airport
Normalizing
Forming Machine
High Frequency Welding
Note:
Chemical Analysis
Universal Testing Machine
Metallurgical Analysis Welding of hot rolled steel coils takes spiral form after passing through preforming and forming rolls. Excellent exterior weld quality at high production speeds is provided by double submerged arc welding process. Manufactured pipes are cut to the desired lengths at the exit of the pipe machine. Pipe ends are beveled by means of carbide machining for accurate on-site welding.
After the pipe is conveyed to hydrostatic testing and off-line ultrasonic testing and/or real time X-ray inspection, the pipe will be subject to final inspection for the compliance to customer requirements.
Starting from incoming control up to the final inspection stage; entire process is monitored and supported by computerized system. Traceability is achieved by input controls and barcodes through entire production lines.