Shop drawings are a crucial basis for fabrication and installation. However, even after the product is completed, the contractor still needs to inspect it to ensure it conforms to the approved design.
1. Check the revision of the drawing.
This is the first, but very important, step.
The contractor needs to ensure:
Production drawings = the most recently approved drawings.
2. Check the dimensions.
Compare:
- Wide.
- High.
- Long.
- Diameter.
- Connection point.
3. Check the accessories.
Details such as elbows, bends, tees, and cross-section changes need to be oriented correctly.
| Content | It needs to be compared with |
| Size | Shop drawing |
| Material | Specification |
| Thickness | Design/Specification |
| flange/trim | Link details |
| Accessory | Statistical table |
| Quantity | BOQ |
| Location | Layout |
4. Controlling revisions helps reduce waste.
One of the main causes of significant losses is manufacturing based on outdated blueprints.
When drawings change after production, the following issues may arise:
- Rework.
- Reship.
- Increase the workforce.
- Behind schedule.
5. What does Sao Viet Air Ducting need from the contractor?
To minimize discrepancies, the contractor should submit:
- PDF/DWG drawings available upon request.
- BOQ.
- Specification.
- Revise.
- Progress.
- Special request.
Conclusion
A good product starts with an accurate set of input data.
Contractors should consider shop drawing control as part of the QA/QC process, not just the responsibility of the design department.
Sao Viet Air Duct It has the capability to fabricate various types of air ducts, giving contractors more options when implementing HVAC systems.
SAO VIET AIR DUCT MANUFACTURING AND TRADING COMPANY LIMITED
- Address: 267 Le Thanh Tong, May Chai, Ngo Quyen, Hai Phong
- Hotline: 0815.999.826 – 0934.559.168
- E-mail: vietonggio@gmail.com
