Product Overview
This buried LPG storage tank is a pressure vessel specifically designed for the underground storage of liquefied petroleum gas (propane). The tank is engineered with a maximum allowable working pressure of 1.82 MPa and is suitable for storage media with a saturated vapor pressure not exceeding 1.63 MPa at 50°C and H₂S solubility less than 7.7 mg/L.
The pressure tank features a horizontal cylindrical design constructed from Q345R high-strength steel, with wall thicknesses ranging from 8mm to 14mm depending on capacity. The underground installation design provides enhanced safety, space efficiency, and temperature stability compared to above-ground alternatives. These tanks are widely used in city gas distribution, industrial applications, commercial fueling stations, and transportation energy supply.
Relevant Cases
Key Specifications
| Parameter | Value |
|---|---|
| Installation type | Buried (underground) |
| Maximum allowable working pressure | 1.82 MPa |
| Capacity range | 5m³ to 200m³ |
| Medium | LPG (propane) |
| Design standard | Saturated vapor pressure ≤1.63 MPa at 50°C |
| Material | Q345R high-strength steel |
Technical Parameters
| No. | Model | Shell Diameter × Length × Thickness (mm) | Head Thickness (mm) | Material | Net Weight (kg) | Total Length (mm) | Anchor Bolt Spec | Level Gauge Center Distance (mm) |
|---|---|---|---|---|---|---|---|---|
| 1 | WG 1.77-1200-5 | DN1200 × 3980 × 8 | 8 (6.8) | Q345R | 1,595 | 4,663 | 4×M20 / 3200×720 | 1,400 |
| 2 | WG 1.77-1400-5 | DN1400 × 2740 × 10 | 10 (8.7) | Q345R | 1,780 | 3,535 | 4×M20 / 1950×840 | 1,600 |
| 3 | WG 1.77-1400-10 | DN1400 × 5980 × 10 | 10 (8.7) | Q345R | 2,925 | 6,775 | 4×M20 / 5180×840 | 1,600 |
| 4 | WG 1.77-1600-10 | DN1600 × 4400 × 10 | 10 (8.8) | Q345R | 2,760 | 5,295 | 4×M24 / 3400×960 | 1,800 |
| 5 | WG 1.77-1800-15 | DN1800 × 5250 × 12 | 12 (10.7) | Q345R | 4,230 | 6,247 | 4×M24 / 4300×1120 | 2,000 |
| 6 | WG 1.77-2000-20 | DN2000 × 5650 × 12 | 12 (10.7) | Q345R | 5,025 | 6,747 | 4×M24 / 4730×1260 | 2,200 |
| 7 | WG 1.77-2000-25 | DN2000 × 7250 × 12 | 12 (10.7) | Q345R | 5,980 | 8,347 | 4×M24 / 6330×1260 | 2,200 |
| 8 | WG 1.77-2200-25 | DN2200 × 5770 × 12 | 14 (12.7) | Q345R | 5,910 | 6,999 | 4×M30 / 4600×1380 | 2,400 |
| 9 | WG 1.77-2000-30 | DN2000 × 8840 × 12 | 12 (10.7) | Q345R | 6,935 | 9,937 | 4×M24 / 7900×1260 | 2,200 |
| 10 | WG 1.77-2200-30 | DN2200 × 7080 × 12 | 14 (12.7) | Q345R | 6,760 | 8,314 | 4×M30 / 5900×1380 | 2,400 |
Key Advantages
Material Advantages
High-Quality Steel Sourcing Raw materials are sourced from custom-rolled steel plates produced by leading domestic steel manufacturers, ensuring consistent and reliable material quality. This approach effectively reduces the number of longitudinal and circumferential welds as well as head splicing seams. The shell requires only edge trimming without generating significant scrap, improving material utilization while maintaining product quality.
Premium Welding Consumables For conventional carbon steel submerged arc welding, American Lincoln welding wire and flux are used, ensuring stable and reliable welding quality with a clean, aesthetically pleasing finish.
Superior Paint Coating Both domestic and imported paint options are available. The finished coating provides excellent weather resistance and a professional appearance.
Processing and Manufacturing Capabilities
Laser Cutting Laser cutting technology delivers high precision with tolerances within ±0.05mm, ensuring weld quality. Heat exchanger baffles can be directly laser cut without additional processing.
Plasma Welding for Stainless Steel For stainless steel with thickness ≤10mm, plasma welding is used for longitudinal and circumferential seams. This single-pass double-sided forming process reduces wire consumption, eliminates the carbon arc gouging step required by submerged arc welding, prevents carburization, and delivers a clean weld appearance with low heat input. Radiographic inspection pass rate exceeds 99%.
Automatic TIG Welding Argon arc automatic welding machines provide stable, consistent welding quality with excellent weld appearance.
Specialized Production Line Advantages
Manufacturing is organized into over ten specialized workstations:
- Material cutting
- Head pressing
- Shell rolling
- Longitudinal and circumferential seam welding
- Sub-assembly and final assembly
- Machining
- Heat treatment
- Hydrostatic testing
- Sandblasting
- Painting
Each workstation is staffed by specialized personnel with secondary division of labor within each process, effectively improving work efficiency and product quality.
Tank Construction
Materials and Fabrication
- Main material: Q345R high-strength steel
- Shell thickness: 8mm to 12mm (depending on model)
- Head thickness: 8mm to 14mm (depending on model)
- Design: Horizontal cylindrical with welded construction
Quality Standards
- Complies with pressure vessel design codes
- Suitable for LPG storage with specified vapor pressure limits
- Corrosion-resistant construction for underground installation
Safety Features
- Pressure relief valves
- Emergency shutoff system
- Liquid level gauge (magnetic or float type)
- Anti-corrosion coating for underground burial
- Anchoring system for stable installation
Applications
- City gas distribution: Municipal LPG supply networks
- Residential and commercial: Community gas stations and commercial fueling
- Industrial: Chemical plants and manufacturing facilities
- Transportation: Vehicle fueling stations
- Specific energy supply: Remote or off-grid energy storage
Actual photo of the shipment
Frequently Asked Questions (FAQ)
Q1: What is the maximum allowable working pressure? A: The maximum allowable working pressure is 1.82 MPa.
Q2: What is the capacity range available? A: Standard models range from 5m³ to 200m³.
Q3: What material is used for the tank construction? A: The tank is constructed from Q345R high-strength steel sourced from leading domestic steel manufacturers.
Q4: What media can this tank store? A: It is designed for LPG (propane) with saturated vapor pressure ≤1.63 MPa at 50°C and H₂S solubility <7.7 mg/L.
Q5: What is the difference between buried and above-ground installation? A: Buried installation offers better temperature stability, space efficiency, and enhanced safety for certain applications.
Q6: What quality control measures are in place during manufacturing? A: Advanced processes include laser cutting, plasma welding, automatic TIG welding, and radiographic inspection with over 99% pass rate.
Q7: What paint options are available? A: Both domestic and imported paint options are available, providing excellent weather resistance and appearance.
Q8: Do you offer customization? A: Yes, custom sizes and configurations can be discussed based on project requirements.
