Gas & Oil Fired Boilers
Professional manufacturer of high-efficiency gas and oil-fired boilers for industrial steam and hot water applications. Complete solutions from 0.5 to 20 t/h with full ASME/EN certification and global delivery support.
Product Range
Gas & Oil Boiler Models & Specifications
Fire tube, water tube, and fully packaged boiler solutions for industrial steam generation. Multi-fuel capability covering natural gas, LPG, diesel, and heavy fuel oil.
Fire Tube Boiler
- • Wet-back & dry-back designs
- • 3-pass smoke tube configuration
- • Efficiency up to 94%
- • Quick steam generation startup
Water Tube Boiler
- • D-type & O-type configurations
- • Membrane water wall construction
- • Superheated steam capability
- • Advanced combustion control
Package Steam Boiler
- • Fully assembled & factory tested
- • Integrated control systems
- • Minimal site work required
- • Fast delivery & rapid startup
Custom Gas & Oil Boiler Design Available
Send us your steam requirements and fuel specification for a tailored solution.
Manufacturing Excellence
World-Class Production Capabilities
State-of-the-art manufacturing facility in Jiangsu, China with complete fabrication capabilities for pressure vessels, combustion systems, and complete gas and oil boiler packages.
Years Experience
Gas & oil boiler design and manufacturing
Units / Year
Annual production capacity
Hydro Tested
Every unit pressure tested before delivery
Quote Response
Technical support and quotations
Advanced Manufacturing
Pressure vessel fabrication facility
Quality & Compliance
Factory Tour
See Our Boiler Manufacturing Process
Take a virtual tour of our manufacturing facility and see the precision engineering behind every gas and oil boiler system we produce.
Gas & Oil Boiler Manufacturing Process
Fabrication, welding, NDT testing, and factory acceptance inspection
Manufacturing Process Highlights
Steel Preparation & Shell Forming
Certified boiler-grade steel rolled and formed with CNC-controlled bending machines
Tube Installation & Welding
Certified welders performing fire tube or membrane panel welding to ASME/EN procedures
NDT & Hydrostatic Testing
100% radiographic or ultrasonic weld inspection followed by full pressure hydro test
Burner Fitting & Factory Acceptance
Burner commissioning, combustion tuning, and full factory acceptance test before shipment
Competitive Advantages
Why Choose ORL Gas & Oil Boilers
20+ years of industrial boiler experience serving global markets. Direct manufacturer pricing, proven reliability, and complete technical support from inquiry to commissioning.
High Thermal Efficiency
Gas boilers achieve 92–94% thermal efficiency; oil-fired models reach 90–92%. Integrated economizers and condensing options push efficiency even higher for long-term fuel savings.
- • Condensing economizer option
- • Modulating burner control
- • Low excess-air combustion
Multi-Fuel Flexibility
Compatible with natural gas, LPG, light diesel, heavy fuel oil, and dual-fuel configurations. Burner systems are customized for your local fuel properties and regulatory requirements.
- • Natural gas & LPG firing
- • Light & heavy fuel oil
- • Dual-fuel changeover option
Fast Delivery
Standard package boilers delivered in 4–6 weeks. Custom water tube designs completed in 8–12 weeks. Common components held in stock to expedite delivery for urgent projects.
- • Package units: 4–6 weeks
- • Custom designs: 8–12 weeks
- • Express options available
Complete Documentation
Full traceability package including EN 10204 3.1 material certificates, hydrostatic test reports, NDT records, and performance certificates. Third-party inspection support available.
- • EN 10204 3.1 mill certificates
- • Hydrostatic test reports
- • TUV / Lloyd's witness option
Engineering Support
English-speaking engineers provide technical support throughout the project lifecycle — combustion calculations, drawing reviews, commissioning supervision, and operator training.
- • 24-hour technical response
- • Site commissioning available
- • Remote diagnostic support
Competitive Pricing
Direct manufacturer pricing with no intermediary markups. Transparent quotations with reliable delivery schedules and full after-sales support included.
- • Direct factory pricing
- • No hidden costs
- • 15+ year spare parts supply
Industry Solutions
Gas & Oil Boiler Applications Across Industries
Our gas and oil-fired boilers provide reliable steam and hot water to industrial facilities worldwide. Customized solutions for specific operational requirements and environmental conditions.
Chemical & Petrochemical
High-pressure process steam for distillation, heating, and chemical reactions. Reliable supply critical for continuous plant operation. Up to 5.8 MPa.
- • Refineries & petrochemical plant
- • Chemical processing facilities
- • Specialty chemical production
- • Solvent recovery systems
Textile, Food & Beverage
Clean, consistent steam for dyeing, finishing, sterilization, and food processing. FDA-compliant construction options for hygienic applications.
- • Textile mills & dyeing plant
- • Food processing & beverage production
- • Dairy & meat processing
- • Brewery & distillery steam
Hotels, Hospitals & Buildings
Reliable hot water and heating steam for commercial and institutional facilities. Energy-efficient solutions with automatic controls and remote monitoring.
- • Hotels & resorts
- • Hospitals & healthcare facilities
- • Commercial district heating
- • Universities & campuses
Reference Projects
Chemical Plant — Natural Gas
10 t/hWater tube boiler supplying saturated steam for distillation columns. Stable operation with modulating burner matching variable process load.
Textile Mill — Dual Fuel
6 t/h3-pass fire tube package boiler with dual-fuel burner (gas/diesel). Supplied as a fully assembled unit, commissioned on-site in under three days.
Hospital — LPG Hot Water
2 t/hCompact fire tube boiler running on LPG for central sterilization and HVAC heating. CE-marked with full documentation for European regulatory approval.
Frequently Asked Questions
Gas & Oil Boiler Technical FAQ
Common questions from project managers, procurement teams, and engineers considering gas and oil-fired boilers for their facilities.
What is the typical thermal efficiency of your gas and oil boilers?
Our gas-fired boilers achieve 92–94% thermal efficiency; oil-fired models reach 90–92% on a net calorific value basis. Key factors affecting efficiency include:
- • Economizer: Stack gas heat recovery adds 2–3% efficiency points
- • Modulating burner: Maintains high efficiency at part load (down to 25%)
- • Excess air control: O₂ trim control minimizes stack losses
- • Condensing option: Gas condensing boilers can reach up to 107% (gross CV basis)
We provide fuel consumption calculations and payback analysis for each project at no cost.
Which fuel types are compatible — can boilers be converted between fuels?
Our boilers support the following fuel types, with burners selected or configured accordingly:
Gas Fuels:
- • Natural gas (pipeline or CNG)
- • LPG — propane or butane
- • Biogas / landfill gas
- • Town gas
Liquid Fuels:
- • Light diesel oil (No. 2)
- • Heavy fuel oil (HFO, No. 6)
- • Kerosene / jet fuel
- • Waste oil (with preheating)
Dual-fuel burners allow automatic or manual changeover between gas and oil, providing fuel security. Fuel conversion of existing burners is also possible with a burner replacement kit.
What are the delivery times and how does shipping work?
Lead Times:
- • Package boilers (0.5–10 t/h): 4–6 weeks from order confirmation
- • Custom water tube (2–20 t/h): 8–12 weeks from order confirmation
- • Express delivery options available for urgent requirements
Shipping:
- • Shipped from Shanghai Port by sea (FCL / LCL) or air freight
- • Package boilers shipped as complete units in 20' or 40' containers
- • Larger boilers modularized for container shipping and field assembly
- • All export documentation, packing lists, and insurance handled by our team
What certifications do your boilers carry — can they be approved in my country?
All boilers are manufactured under one or more of the following standards:
- • ASME Section I — Power boilers (for US, Canada, and ASME-accepting countries)
- • EN 12952 / EN 12953 — European water tube and shell boilers
- • CE Marking — Pressure Equipment Directive (PED) compliance for EU
- • ISO 9001 — Quality management system certification
- • GB Standards — Chinese national standards (TSG G0001)
Third-party inspection by Lloyd's Register, TÜV, Bureau Veritas, or other recognized bodies can be arranged. We provide full documentation to support your local boiler registration and insurance requirements.
Do you provide installation, commissioning, and operator training?
Commissioning Support:
- • Site supervision by certified engineers (travel worldwide)
- • Package boilers: typically 2–3 days mechanical + 1–2 days commissioning
- • Combustion tuning and performance verification
- • Operator training and knowledge transfer
Ongoing Support:
- • 24/7 technical hotline (English-speaking engineers)
- • Remote diagnostic and troubleshooting support
- • Spare parts supply guaranteed for 15+ years
- • Annual maintenance contract options available
What warranty is provided and what does it cover?
- • Standard warranty: 12 months from commissioning or 18 months from shipment — whichever comes first
- • Coverage: Manufacturing defects in pressure parts, welds, and supplied components
- • Extended warranty: Up to 3 years available under long-term service agreements
- • Spare parts: Priority supply and preferential pricing for warranty and post-warranty period
- • Exclusions: Normal wear consumables (gaskets, refractory, burner nozzles), damage from improper operation or water quality issues
We provide detailed operation and maintenance manuals to help your team avoid common warranty-voiding issues.
Have more specific technical questions about gas and oil boilers?
Ask Our EngineersGet Your Gas & Oil Boiler Proposal
Share your project requirements and receive a detailed boiler proposal with technical specifications, efficiency calculations, and competitive pricing within 24 hours.
What We Need From You
- Steam / Hot Water Requirements: Capacity (t/h), pressure (MPa), temperature (°C)
- Fuel Type: Natural gas, LPG, diesel, HFO, or dual-fuel
- Application: Process steam, heating, sterilization, power generation, etc.
- Certification Required: ASME, CE/EN, or other standards
- Project Timeline: Expected delivery and commissioning date
Direct Contact Options
Why Choose ORL?
- ✓ 20+ years gas & oil boiler manufacturing experience
- ✓ ASME / EN / CE certified — globally accepted
- ✓ Package units delivered in 4–6 weeks
- ✓ 92–94% efficiency with full documentation
- ✓ Direct factory pricing — no intermediaries