Plasma girth welding
Welding

Clean workshops, dedicated equipment and process inspection for high-specification pressure vessel fabrication.
Upgraded in 2026, the workshops combine defined work areas, material protection and 6S management for orderly fabrication.
Defined production aisles, work areas and material storage support safe, orderly fabrication.
Material identification, shell forming quality and surface protection address the processing requirements of different materials.
Welding, inspection and delivery acceptance are governed by applicable codes and project specifications.
Cutting, forming, welding and inspection in practice. Select a video to see the process.
Welding
Welding
Quality inspection
Cutting & forming
Cutting & forming
Cutting & forming
Material documentation, inspection records and delivery documents are specified in the project requirements.
Forming, machining and welding equipment supports shell, head and tube-bundle fabrication.
Automated cutting of openings in vessel heads.
Plate cutting for fabrication.
Plate bending and forming.
Longitudinal seam welding of vessel shells.
Welding manipulator with turning rolls.
Expansion of tubes into tubesheets.
Cutting, forming, welding and lifting equipment. Project capability is confirmed against materials, geometry and service conditions.
| Equipment | Specification & use | Quantity |
|---|---|---|
| Three-roll plate bending machine | Use: Maximum cold-rolling plate thickness: 50 mm | 5 |
| Head flanging machine | 1 | |
| CNC cutting machine | Use: Laser, plasma and flame cutting | 6 |
| Hydraulic press brake | 1 | |
| Hydraulic plate shearing machine | Model / specification: QC12Y-16*2500 | 1 |
| CNC drilling machine | Model / specification: CNC-2600Use: CNC tubesheet drilling | 1 |
| Flange and tubesheet facing machine | Model / specification: FDG1000Use: Secondary machining of sealing faces | 1 |
| Automatic tube-to-tubesheet TIG welding machine | Model / specification: ZX7-315ST | 2 |
| Automatic plasma welding machine | Use: Automatic circumferential and longitudinal seam welding | 2 |
| Automatic submerged arc welding machine | Use: Automatic circumferential and longitudinal seam welding | 2 |
| Automatic welding positioner | 2 | |
| KT-series welding rotators | Model / specification: KT-5~100TUse: Including three 100-tonne sets | 30 |
| Electric single-girder overhead crane 4# | Model / specification: LDA32 | 2 |
| Electric single-girder overhead crane 3# | Model / specification: LDA16 | 4 |
| Electric single-girder overhead crane 2# | Model / specification: LDA10 | 5 |
| Electric single-girder overhead crane 1# | Model / specification: LDA5 | 2 |
| Tube bending machine | 3 | |
| Profile cutting saw | Use: Sawing machine | 1 |
| Tube expander | Use: Hydraulic and mechanical types | 2 |
| Plate edge milling machine | Use: Weld edge preparation | 1 |
| Radial drilling machine | Model / specification: Z3050QX15 | 2 |
| TIG welding machine | Use: Miler-315ST and other models (source spelling) | More than 80 units; exact count unspecified |
| Semi-automatic gas-shielded arc welding machine | Model / specification: NBC-500Use: Including weld overlay equipment | 6 |
| Manual arc welding machine | Model / specification: ZX5-350 | 20 |
| Thyristor-controlled rectifier arc welding machine | Model / specification: ZX5-630 | 6 |
| Resistance welding machine | 1 | |
| Automatic far-infrared electrode drying oven | Model / specification: ZYHC-30 | 1 |
| Dehumidifier | Model / specification: DH-902BS | 1 |
| Hydraulic trolley | 2 | |
| Automatic polishing machine | Use: Polishing up to 400 grit | 2 |
| Electropolishing equipment | Use: Mirror finish | 1 |
| High-pressure cleaning machine | 2 | |
| Portable high-pressure abrasive blasting unit | Model / specification: SA2.5 | 2 |
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Material traceability, welding, inspection and delivery documentation throughout fabrication.
Special Equipment Production License, ASME U and National Board authorizations, management-system certificates, patents and software copyrights.
Inspection and test equipment supports fabrication examination. Test scope and acceptance criteria follow applicable codes and project specifications.
| Equipment | Specification & inspection method | Quantity |
|---|---|---|
| Portable material identification spectrometer | Model / specification: PMISPECTROMethod / use: Portable material identification spectrometer imported from Germany | 1 |
| Portable surface roughness tester | 2 | |
| Portable ultrasonic thickness gauge | Method / use: Ultrasonic thickness measurement | 2 |
| Portable X-ray inspection unit | Method / use: Longitudinal radiography (RT) | 2 |
| Portable X-ray inspection unit | Method / use: Circumferential radiography (RT) | 2 |
| Ultrasonic flaw detector | Method / use: Ultrasonic testing (UT) | 1 |
| Magnetic particle inspection unit | Method / use: Magnetic particle testing (MT) | 1 |
| Digital film densitometer | Model / specification: TH-N386A | 1 |
| Universal materials testing machine | Method / use: Bend and tensile testing | 1 set |
| Electric pressure test pump | Model / specification: 4D-SBⅡ-57/16 | 3 |
| Pressure test pump | Model / specification: S-SY便携式 | 2 |
| Air compressor | Model / specification: FS-200300 | 5 |
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