Struggling with rising diesel prices and emissions compliance? Our DOT/ASME-certified CNG auto tanks deliver 40% fuel savings, 30% lighter weight, and 20% more storage capacity for buses, trucks, and municipal vehicles. 15-year lifespan with zero safety incidents in 20+ years of global operations.
Why Fleet Managers Choose Enric:
Diesel and gasoline costs are crippling your bottom line. According to the IEA’s 2025 Gas Market Report, fuel price volatility added 18% to operational costs for US fleets last year. Meanwhile, the EPA’s 2027 emissions standards demand 50% NOx reductions—or hefty fines.
Diesel prices surged 32% in 2024 (EIA data). CNG costs $1.50–$2.50/gge vs. diesel’s $4.00+/gallon—a 40%+ savings.
EPA’s Phase 3 GHG standards (2027) require 50% NOx cuts. Non-compliance fines: $40,000+ per vehicle/year.
Cheap tanks fail DOT crash tests, risking explosions. Our tanks pass UN ECE R110 and NGV2 standards.
Retrofitting with generic tanks causes leaks and sensor errors. Our OEM/ODM designs integrate seamlessly with your fleet.
Steel Type 1 tanks add 500+ lbs. Our Type 4 carbon fiber tanks are 30% lighter—more cargo, less fuel.
Competitors take 90+ days. We deliver in 45 days (500+ units) from US/EU warehouses.
It’s not just about cutting costs—it’s about eliminating risks.
Most suppliers offer one-size-fits-all tanks. We provide engineered solutions for your specific fleet.
| Feature | Type 1 (Steel) | Type 2 (Aluminum Liner) | Type 3 (Aluminum + Carbon Fiber) | Type 4 (Plastic + Carbon Fiber) |
|---|---|---|---|---|
| Weight | Heavy (500+ lbs) | Moderate (300-400 lbs) | Light (250-300 lbs) | Ultra-Light (150-200 lbs) |
| Storage Capacity | Low | Moderate | High | 20% Higher |
| Cost | $500–$800 | $1,000–$1,500 | $2,000–$3,000 | $2,500–$3,500 |
| Lifespan | 10–12 years | 12–15 years | 15 years | 15–20 years |
| Best For | Budget fleets | Mid-range trucks | Long-haul trucks | Buses, Heavy-Duty Trucks, Municipal Vehicles |
| Safety Certifications | DOT, UN ECE R110 | DOT, UN ECE R110 | DOT, ASME, NGV2 | DOT, ASME, NGV2, CE, ISO 9001 |
✅ Our Recommendation: For maximum ROI, choose Type 4 for buses/heavy trucks or Type 3 for mid-range fleets. Type 1/2 are best for budget-constrained retrofits.
Our 100,000 sq. ft. factory in Shijiazhuang, China – ASME-certified since 2003.
Automated carbon fiber winding for Type 4 tanks.
Hydrostatic testing – Every tank is pressure-tested to 1.5x its working limit.
| Parameter | Value | Standard |
|---|---|---|
| Working Pressure | 3,600 psi (248 bar) | NGV2 |
| Burst Pressure | 5,400 psi (372 bar) | DOT CFR 49 |
| Liner Material | HDPE (High-Density Polyethylene) | UN ECE R110 |
| Outer Wrap | Carbon Fiber (T700) | ASME Section X |
| Temperature Range | -40°C to +85°C (-40°F to +185°F) | ISO 9809 |
| Lifespan | 15–20 years | NGV2 |
| Weight (Per Tank) | 150–200 lbs (68–91 kg) | Manufacturer Data |
| Storage Capacity | 8–20 kg CNG (280–700 scf) | Customizable |
| Dimensions | Diameter: 20–26 in | Length: 60–120 in | OEM Specifications |
| Valve Type | NGV1, NGV2, or Custom | SAE J2579 |
Need a custom solution? Our engineers will design a tank system tailored to your fleet’s exact specifications. Request a Free Consultation →
"Enric’s Type 4 tanks cut our fuel costs by 42% compared to diesel. The lightweight design allowed us to increase payload capacity by 400 lbs per truck. Best of all, zero safety issues in 3 years of operation."
"We tested 5 different CNG tank suppliers before choosing Enric. Their Type 3 tanks passed our DOT crash tests with zero leaks. Their engineering team also solved our custom mounting challenge in just 2 weeks."
"We’ve been using Enric’s tanks for 12 years across our 200-truck fleet. Not a single failure. Their US warehouse in Houston means we get replacements in 5 days—no downtime."
Our CNG auto tanks meet the highest international safety standards:
DOT
US Department of Transportation
ASME
American Society of Mechanical Engineers
CE
European Conformity
ISO 9001
Quality Management
UN ECE R110
International CNG Tank Standard
NGV2
Natural Gas Vehicle Standard
Need compliance documentation for a specific market? Request our certification package →
A: Our Type 3 and Type 4 tanks have a 15–20 year lifespan with proper maintenance. Type 1/2 tanks last 10–15 years. All tanks come with a 5-year warranty against manufacturing defects.
A: Yes! We offer OEM/ODM designs compatible with 90% of commercial models, including:
A: See our comparison table above. In short:
A: Our tanks are tested from -40°C to +85°C (-40°F to +185°F) per ISO 9809. They maintain 100% structural integrity in all conditions, including:
A:
A: Yes! We partner with certified workshops in the US, EU, and Asia to provide:
A: We follow UN Model Regulations for CNG tank shipping:
A:
A: We offer a 5-year warranty covering:
Join 500+ fleets worldwide who trust Enric’s CNG auto tanks for safety, reliability, and ROI.
🔒 Your data is secure. We never share your information with third parties.
"We switched 200 city buses to Enric’s Type 4 CNG tanks in 2020. In 5 years, we’ve had zero safety incidents and reduced our fleet’s CO2 emissions by 35%. The lightweight design also improved our fuel efficiency by 8%."
Verified Purchase – June 2020
"Enric’s Type 4 tanks have been a game-changer for our 500-truck fleet. We’ve saved $1.2M annually on fuel costs, and the 20% higher storage capacity means fewer refueling stops. Their US warehouse also ensures fast replacements when needed."
Verified Purchase – March 2021
"We’ve tested tanks from 7 different suppliers, and Enric’s are the best in class. Their carbon fiber winding is second to none, and the 15-year lifespan is unmatched. Plus, their OEM/ODM team customized a mounting solution for our unique chassis in just 2 weeks."
Verified Purchase – November 2022
Michael Chen is a Senior Engineer at Shijiazhuang Enric Gas Equipment Co., Ltd. with 20 years of experience in high-pressure gas storage systems. He has led the design and certification of 100+ CNG, hydrogen, and industrial gas tank models, working with clients in North America, Europe, and Asia.
Michael holds a Master’s in Mechanical Engineering from Tsinghua University and is a certified ASME inspector. His expertise includes:
Connect with Michael: michael.chen@enricgroup.com | +86-13803119999
Here’s what our customers are asking right now:
US Client: "Do you have tanks compatible with Freightliner Cascadia?"
Enric: "Yes! We have Type 4 (120L) tanks with custom mounting brackets for Cascadia. Ships in 5 days from Houston."
European Distributor: "Are your tanks DOT-certified for the US market?"
Enric: "Yes, all our Type 3 & 4 tanks are DOT CFR 49 compliant. We can provide certification documents for customs."
Indian Fleet Owner: "What’s the burst pressure for your Type 4 tanks?"
Enric: "5,400 psi (372 bar) – 1.5x the working pressure of 3,600 psi. Tested per NGV2 standards."
-Hengkai Natural Gas Liquefaction Project
-Changming Phase II Natural Gas Liquefaction Project
-Hwange Natural Gas Liquefaction Project
-Tianhao Coalbed Methane Liquefaction Project
-Tianyun Coalbed Methane Liquefaction Project
-Shuntai Coalbed Methane Liquefaction Project
-60.000 cubic meters/day
-60.000 cubic meters/day
-60.000 m3/day*2 sets
-200.000 cubic meters/day
-and-Treatment.jpg "Natural Gas Liquefaction (Lng) And Treatment")
