API 650 Standard Crude Oil Storage Tank | 1000–100,000m³ Vertical Atmospheric Tank Farm Solution
Strictly API 650 Compliant | Fixed Roof & Floating Roof Tank | Full Design, Fabrication & Overseas Turnkey Installation
3 Core Selling Points
- 100% API 650 Compliance: Full design, welding, inspection follow latest API 650 industrial code
- Large Volume Focus: Professional in 1000m³+ crude oil & fuel oil atmospheric storage tanks
- Zero-Leakage Quality: Full NDT testing & standard tank farm safety configuration
What Is API 650 Tank
API 650 is the global universal standard for
atmospheric vertical welded steel storage tanks. It is the most widely accepted specification for oilfield tank farms, refineries, petroleum terminals and industrial crude oil storage projects worldwide. All our tanks are fully designed and fabricated strictly according to API 650 latest edition, meeting international bidding and project acceptance requirements.
API 650 Tank Types
We provide full series API 650 vertical storage tanks for large oil storage projects:
1. API 650 Fixed Roof Tank
Ideal for fuel oil, heavy oil and low-volatility petroleum storage. Stable structure, low maintenance cost, widely used in auxiliary tank farm areas.
2. API 650 Internal Floating Roof Tank (IFR)
Best choice for crude oil storage. Greatly reduces oil vapor loss, prevents explosion risk, improves storage safety, the mainstream type for large oilfield tank farms.
3. API 650 External Floating Roof Tank (EFR)
Applied for super-large capacity crude oil tanks above 10,000m³, ultra-low volatilization, suitable for refinery and central oil depot projects.
API 650 Standard Technical Parameters
| Item |
API 650 Standard Specification |
| Applicable Capacity |
1000m³ – 100,000m³ (Large tank farm customized) |
| Working Condition |
Atmospheric pressure storage, normal ambient temperature |
| Main Steel Material |
A516 Gr70, Q245R, Q345R, S355JR (API standard approved) |
| Design Code |
API 650 Latest Edition + GB50128 |
| Testing Standard |
API 650 required UT / RT / MT NDT inspection + Water pressure test |
| Storage Medium |
Crude Oil, Fuel Oil, Diesel, Petroleum Liquid |
API 650 Core Compliance Advantages
- API 650 Standard Wall Thickness Calculation: Strictly follow API 650 hydrostatic design formula, accurate wall thickness configuration, safe for long-term full-load operation.
- Standard Welding Procedure: All welding follows API 650 & WPS specification, full seam non-destructive testing, no leakage risk.
- Complete API Standard Accessories: Overflow prevention, vent system, anti-static, lightning protection, manhole & drainage system fully compliant with API 650 safety requirements.
- Harsh Environment Adaptation: API 650 customized reinforcement & anti-corrosion system for desert, coastal, high-temperature oilfield sites.
Full API 650 Project Documents
Overseas clients & engineering companies highly value complete standard documents, we provide full English API 650 technical package:
- API 650 Standard Design Calculation Report
- Full set of API 650 construction drawings (English version)
- WPS & PQR Welding Qualification Documents
- UT/RT NDT Test Reports
- Steel Material Mill Certificate
- Water Pressure & Air Tightness Acceptance Report
One-Stop API 650 Tank Turnkey Service
- API 650 Professional Design: Custom diameter, height and structure according to site and capacity
- Factory Prefabrication: Tank plate cutting, welding and pre-assembly strictly per API 650
- Container Split Export: Solve super-large tank shipping problem, save logistics cost
- Overseas On-site Installation: Professional team complete assembly, welding and API standard acceptance
- After-sales Support: API standard maintenance guidance & long-term technical support
API 650 Tank Project Cases
- 1000–50000m³ API 650 floating roof crude oil tank farm project
- Refinery API 650 fixed & floating roof mixed tank group
- Middle East & Africa desert oilfield API 650 large storage tanks
- Coastal port petroleum terminal API 650 anti-corrosion tank project
API 650 FAQ
Q1: What is the difference between API 650 and API 620?API 650 is for
atmospheric storage tanks, the standard choice for conventional crude oil tank farms.
API 620 is for low-pressure large storage tanks for special mediums.
Q2: Are your tanks fully API 650 certified for overseas bidding?Yes. Every design, fabrication and testing procedure strictly complies with API 650 latest standard, with complete English document set for project review and customs clearance.
Q3: Can you customize API 650 floating roof tanks?We provide full API 650 fixed roof, internal floating roof and external floating roof customization for all 1000m³+ large tank projects.
Q4: How do you guarantee API 650 quality?We adopt API 650 standard structural calculation, automatic welding and 100% NDT inspection, strictly follow standard wall thickness and safety configuration.
Get Your API 650 Tank Official Solution
Provide your tank capacity, tank type (fixed/floating roof) and project location. We will send you
official API 650 design scheme, calculation report and detailed quotation within 24 hours.
