VN
The installation of steel water pipes, especially spiral welded steel pipes, requires absolute precision and strict adherence to technical procedures. A small mistake in the preparation process can lead to serious consequences such as leakage, pipe breakage, or affect the life of the entire water line. Therefore, before construction, a full inspection and preparation according to a detailed technical checklist is mandatory for all contractors and construction units.
In this article, E.NHAT – a leading unit in the production and supply of spiral welded steel pipes in Vietnam – will share a complete and professional technical checklist before installing steel water pipes. This will be a useful reference document to help ensure safety, efficiency and cost optimization during the construction of water supply, drainage, or technical infrastructure projects using steel pipes.
TECHNICAL CHECKLIST FOR STEEL PIPE DELIVERY
- The performer:……………………………………
- Part:…………………………………………………
- Product:………………………………………………….
- Date of implementation:……………………………………………
I. GENERAL PREPARATION
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Check Item |
Content | Done |
Note |
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1 |
Check design documents, technical drawings, detailed construction drawings | ☐ | |
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2 |
Check the actual installation location and route against the drawing. |
☐ |
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| 3 | Analysis of terrain and geology of installation area (if necessary) |
☐ |
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4 |
Construction environment assessment: safety, working space, drainage… |
☐ |
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| 5 | Check suitable weather conditions for construction implementation | ☐ |
II. STEEL PIPE AND MATERIALS INSPECTION
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Check Item |
Content | Done | Note |
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6 |
Compare the list of delivered materials with the contract | ☐ | |
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7 |
Check diameter, length, wall thickness, steel type (SS400, Q235, API…) | ☐ | |
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8 |
Quality certification test: JIS, AWWA, ISO… |
☐ |
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9 |
Check the protective coating (epoxy, 3LPE, polyurethane…) |
☐ |
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10 |
Check weld tightness (ultrasonic, pressure test if required) |
☐ |
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11 |
Check the physical condition of the pipe: distortion, rust, warping, welding cracks |
☐ |
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| 12 | Check accessories: elbows, washers, joints, flanges, bolts, gaskets… | ☐ |
III. SITE PREPARATION AND EQUIPMENT
| Check item | Content | Done | Note |
| 13 | Leveling, flattening and reinforcing the pipeline (if underground) | ☐ | |
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14 |
Establishing pipeline positioning pile system, diversion points | ☐ | |
| 15 | Prepare lifting equipment (crane, forklift, pipe roller…) | ☐ | |
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16 |
Prepare welding fixture, welding machine, cutting machine, pressure testing equipment | ☐ | |
| 17 | Check that construction workers have sufficient quantity and professional certificates |
☐ |
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18 |
Establish labor safety plan, signs, fire prevention |
☐ |
IV. CHECK CONNECTIONS – JOINTS
| Check item | Content | Done |
Note |
|
19 |
Ensure joints (flanges, welds, pipe fittings) are as designed | ☐ | |
| 20 | Rubber gasket or sealing material of correct type and size | ☐ | |
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21 |
Check the flange bolt tightening force to meet technical requirements | ☐ | |
| 22 | Make sure the pipe installation is not off-axis and does not exert horizontal force. | ☐ |
V. PRESSURE TEST BEFORE DELIVERY
| Check item | Content | Done |
Note |
|
23 |
Perform full line or section pressure testing | ☐ | |
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24 |
Record test pressure parameters and pressure holding time. | ☐ | |
| 25 | Check for leaks at welds, flanges, fittings |
☐ |
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| 26 | Đảm bảo không biến dạng, không xì khí/nước | ☐ | |
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27 |
Make a pressure test report, confirmed by the supervisor | ☐ |
VI. PIPELINE FINISHING AND PROTECTION
|
Check item |
Content | Done | Note |
| 28 | Protective coating at welds (if constructed outdoors) | ☐ | |
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29 |
Construction of manholes and inspection pits (if any) in accordance with regulations | ☐ | |
| 30 | Acceptance of each section, installation of signs and route codes | ☐ | |
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31 |
Prepare handover minutes and completion documents | ☐ |
NOTE:
- All inspection items must have the signature of the supervising engineer, construction team leader and investor representative.
- Relevant documents to be archived include: construction drawings, construction logs, material certificates, pressure test reports, site photos, and acceptance records.
- Depending on the specific project, the checklist can be expanded to include items related to special conditions (e.g. high corrosion resistance, weak geology, underwater construction…).
Consulting – Quotation – Supply of Spiral Welded Steel Pipes
E.NHAT GROUP specializes in:
✅ Providing spiral welded steel pipes with high quality standards.
✅ Processing spiral steel pipes according to specific technical requirements.
✅ Nationwide delivery.
✅ Technical consulting support and optimal installation solutions.