China Cast Iron Fire Pit Manufacturers Factory - Custom Cast Iron Fire Pit Wholesale

Cast Iron Fire Pit Manufacturer For Wholesale, OEM & ODM

Blue Carp produces commercial-grade cast iron fire pits, heavy-duty fire bowls, and outdoor heating assemblies for outdoor living brands, global distributors, hospitality developers, and private-label programs.

By leveraging high-density gray iron casting (ASTM A48 Class 20/30) and thermal-shock resistant structural designs, our fire pits offer high heat storage capacity, structural rigidity, and classic visual appeal for premium retail and commercial applications.

We support complete OEM/ODM development—from 3D pattern tooling and metallurgical control to high-temperature coating, FDA/LFGB compliant cooking accessories, and drop-tested bulk packaging.

Large Cast Iron Fire Pit Bowl
The Blue Carp Large Cast Iron Fire Pit Bowl is made from cast iron and features a low, wide bowl design that provides space for building a wood-burning fire. Its elevated base keeps the fire pit bowl
Wrought Iron Fire Pit
A Wrought Iron Fire Pit combines functional outdoor heating with handcrafted design elements, making it a popular choice for customers who value both performance and visual appeal. Known for its
Cast Iron Wood Burning Fire Pit
A Cast Iron Wood Burning Fire Pit is a reliable and long-lasting solution for outdoor heating and ambiance. Designed for wood fuel use, it delivers natural flame performance, strong heat output, and
Cast Iron Fire Pit Bowl
A Cast Iron Fire Pit Bowl is a classic and durable outdoor heating solution designed for patios, gardens, camping, and outdoor gatherings. With its deep bowl structure and solid cast iron
Heavy Duty Cast Iron Fire Pit
A Heavy Duty Cast Iron Fire Pit is a durable and high-performance outdoor heating solution designed for backyard gatherings, camping, patio use, and commercial outdoor spaces. Built with solid cast

Technical Specifications

Specification	Details / Available Options
Material Grade	Gray Cast Iron: HT150 / HT200 / ASTM A48 Class 20 / Class 30
Wall Thickness	Standard 4.0–8.0 mm+, engineered according to bowl diameter and structural requirements
Bowl Diameter	Standard 24" (600 mm) to 48" (1200 mm); custom diameters available
Forming Process	Sand Casting / Shell Mold Casting / DISA Automatic Molding
Surface Finish	High-Temperature Silicone Paint rated up to 600°C / 1100°F; Enamel Coating; Natural Antique Rust / Patina
Base Options	Cast Iron Integrated Feet; Tubular Steel Frames; Heavy-Duty Pedestals
Fuel Compatibility	Seasoned Hardwood; Charcoal; OEM Gas Burner Inserts
Cooking Grates	304 Stainless Steel / Enamelled Cooking Grates
Accessories	Mesh Spark Screens; Rain Covers; Ash Trays
Branding Options	Cast-In Embossed Logo; Laser Engraving; Stamped Stainless Steel Badges
Testing / Standards	EN 1860-1; FDA / LFGB for applicable food-contact grates; ISTA 3A Drop Test Packaging
Packaging	Export Carton / Protective Packaging; ISTA 3A Drop-Tested Packaging; Palletized Shipping where required

Key Advantages

Thermal Mass & Sustained Radiation

Gray cast iron exhibits high density (~7,200 kg/m³) and a specific heat capacity of ~460–540 J/kg·K. This material mass absorbs intense combustion heat and radiates uniform thermal energy long after flames subside, delivering superior heating efficiency compared to thin stamped steel.

Rigid One-Piece Casting & Intricate

Detail Unlike welded sheet metal, mold casting allows seamless one-piece fire bowls with integrated structural ribs, decorative outer patterns, and reinforced mounting bosses. This eliminates stress-concentration points and visible seam welds, giving the product a premium, solid feel.

Corrosion & Oxidation Control

Raw cast iron naturally forms a protective iron oxide layer. For commercial retail, we apply shot-blasting (SA 2.5) followed by heat-cured silicone-based coatings, preventing flash rust during transit and storage while enduring continuous direct flame exposure.

Cast Iron Product Range

Round Cast Iron Fire Pits Optimized for patio heating retailers and garden centers. Features uniform wall thickness to prevent hot-spot stress, paired with detachable or knock-down (KD) bases to maximize ocean container loading density.

Heavy-Duty Commercial Fire Bowls Thick-walled (6mm–10mm) large-format bowls engineered for resorts, outdoor venues, and architectural landscape integration. Includes built-in bottom drainage ports and optional heavy cast pedestals for ground stability.

Wood-Burning & Dual-Cooking Fire Pits Designed with bottom airflow clearance and removable ash collection pans. Optional food-grade 304 stainless steel or cast iron cooking grates convert the fire pit into a multi-functional outdoor cooking station.

Cast Iron Casting & Manufacturing Process

3D Design & Pattern Tooling

Engineering CAD models into aluminum or resin casting patterns, accounting for material shrinkage rates (1.0%–1.5%).

Mold Preparation & Melting

Automatic sand molding paired with induction furnace melting under strict spectroscopic chemical composition control.

Pouring & Controlled Cooling

Precise pouring temperatures ensure complete mold cavity fill, followed by extended shakeout cooling to prevent thermal distortion and internal cracking.

Shot-Blasting & Fettling

Mechanical shot-blasting removes sand residue and scale; grinding teams dress flash lines, gates, and risers to achieve smooth edge radii.

Surface Coating & Curing

Application of high-temperature heat-resistant coatings followed by thermal curing tunnels for maximum paint adhesion.

QC & Assembly Inspection

Wall thickness ultrasonic testing, coating dry film thickness (DFT) checks, and hardware assembly validation.

Quality Control & Batch Consistency

Metallurgical Verification: Spectrometer testing on every heat lot to confirm C, Si, Mn, P, S chemical balance and tensile strength.

Dimensional & Wall Thickness Check: Ultrasonic thickness gauges verify critical bowl areas to prevent localized thin-wall burnout.

Coating Adhesion & Thermal Testing: Cross-hatch adhesion testing and sample burn-in testing up to 600°C.

Transit & Packaging Protection: ISTA 3A / ISTA 1A drop-test approved packaging utilizing heavy-duty double-wall corrugated cartons, corner protectors, and palletized strapping to prevent freight damage.

OEM / ODM Collaboration Workflow

Inquiry & CAD Submission: Send your 2D/3D drawings, reference samples, target dimensions, or project concepts.

DFM Review & Quote: Our foundry engineers review wall thickness, draft angles, casting feasibility, tooling costs, and unit price.

Tooling & Sampling: Pattern fabrication (15–20 days) and first-article sample production for dimensional and thermal validation.

Sample Sign-Off & Mass Production: Pilot batch production after physical sample approval, ensuring strict batch-to-batch repeatability.

Final QC & Container Loading: Pre-shipment inspection report provided with material test certificates (MTC) prior to dispatch.

Certification

FAQ

Q: What is the typical MOQ for custom OEM cast iron fire pits?

A: For existing catalog models, MOQ starts at 100–200 units. For fully custom designs requiring new casting pattern tooling, MOQ is typically 300–500 units depending on size and weight.

Q: What is the lead time for new pattern tooling and samples?

A: New pattern/tooling development takes 15 to 20 days. First-article sample inspection and testing require an additional 7 to 10 days before mass production sign-off.

Q: How do you prevent cracking from thermal shock?

A: We control carbon equivalent (CE) levels in our gray iron melt to balance tensile strength and thermal conductivity. Additionally, engineered wall thickness transitions and rounded internal corners distribute thermal expansion stress evenly.

Q: Can you supply retail-ready knock-down (KD) packaging?

A: Yes. We specialize in designing detachable legs, bases, and nested bowl configurations packaged in compact, drop-tested retail cartons, reducing shipping volume (CBM) by up to 35% to lower landed freight costs.

With abundant experience, we are one of the most professional cast iron fire pit manufacturers in China. Please rest assured to wholesale cheap cast iron fire pit for sale here from our factory. If you have any enquiry about custom service, please feel free to email us.

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