Looking for a reliable cast iron back boiler supplier in 2026? Whether you are an import manager, brand owner, or sourcing agent, you need a partner that delivers consistent quality, competitive pricing, and on‑time shipping. As an experienced Chinese foundry with over 20 years in the industry, we produce cast iron back boilers that meet international standards, support OEM/ODM designs, and offer MOQ flexibility. This page gives you everything you need to evaluate us as your source.
Why Top Buyers Struggle with Traditional Cast Iron Back Boiler Sourcing
Importers often face inconsistent casting quality, long lead times, and poor communication from suppliers. Many foundries focus on high‑volume runs and neglect the fine tolerances required for a cast iron back boiler – a product that must withstand constant thermal cycling and high water pressure. Additionally, compliance with international standards (CE, ISO 9001) can be hit or miss, causing delays at customs. These issues erode margins and damage brand reputation.
Our Solution: Integrated Factory + Export Team
With our own foundry in Hebei, China, and a dedicated export company, we control every stage – from pattern making to final inspection. This vertical integration eliminates middlemen, ensures consistent cast iron metallurgy, and lets us offer flexible MOQ (as low as 100 pieces). We also provide full OEM/ODM support, helping you create a bespoke back boiler design for your market.
Cast Iron Back Boiler: Technical Specifications & Comparison
Our standard cast iron back boiler is designed for solid fuel and multi‑fuel stoves. Below are key parameters (custom sizes available via OEM):
| Parameter | Standard Value | Custom Range |
|---|---|---|
| Material | Gray Cast Iron (EN‑GJL‑250) | Ductile Iron on request |
| Heat Output | 12 – 18 kW | Up to 25 kW |
| Pressure Rating | 2.5 bar (tested to 4 bar) | Up to 6 bar |
| Dimensions (LxWxH) | 410 x 280 x 180 mm | Any size feasible |
| Compliance | ISO 9001, CE (EN 13240) | UL / CSA for North America |
* All data subject to final order confirmation. Custom designs verified with your engineer.
Where Our Cast Iron Back Boilers Are Used
- Residential Stoves: For homes in Europe, North America, and Australia that require space heating plus domestic hot water.
- Commercial Boilers: Small hotels, cabins, and workshops needing a reliable heat source.
- Retrofit Projects: Replacing old plate steel boilers with durable cast iron upgrades.
- OEM Integration: Stove manufacturers who incorporate our back boiler into their own product lines.
Trusted by Global Buyers – Why Over 500 Clients Choose Us
Our 20,000 m² facility with robotic pouring lines and QA lab.
James Whitfield
Senior Casting Engineer, 15 years in ferrous foundry design and global supply chain.
“I personally oversee every new cast iron back boiler project. Our foundry’s expertise ensures defect‑free castings that meet your drawing exactly.”
What Our Customers Say
John M. – Import Manager, USA
“We’ve sourced cast iron back boilers from three Chinese foundries before. TJJ’s consistency in dimensional accuracy and their quick response to design changes set them apart. Lead time was exactly as promised – 30 days for the first batch.”
Sarah L. – Brand Owner, UK
“We needed UL certification for our North American line. TJJ completed the documentation quickly and the actual test passed on the first attempt. Their OEM team is very professional.”
Carlos R. – Sourcing Agent, Spain
“Flexible MOQ was critical for our pilot project. TJJ allowed 100 pieces with custom dimensions. The quality reports are detailed and the castings are easy to weld into our stove body.”
Mark T. – Wholesaler, Australia
“The price to performance ratio is excellent. We’ve now placed 4 repeat orders. After‑sales support responded to our query within hours – very rare for a Chinese supplier.”
Commercial Terms – What You Need to Know Before Ordering
| Item | Details |
|---|---|
| Minimum Order Quantity (MOQ) | 100 pcs for standard models; lower possible for trial orders |
| Lead Time | 25–35 days for first order; 20 days for repeats |
| OEM / ODM Support | Custom patterns, dimensions, surface treatment, labeling |
| Certifications | ISO 9001:2015, CE (EN 13240), UL/CSA available |
| Packaging | Stretch film + plywood pallet or custom retail box (OEM) |
| Logistics Terms | FOB Tianjin / Qingdao, CIF to major ports worldwide |
| Payment Terms | T/T (30% deposit, 70% before shipment), L/C for large orders |
| After‑Sales | 12‑month warranty against casting defects; 24h technical support |
* All the above terms are subject to final contract negotiation and order confirmation.
Our Factory – Backed by Two Decades of Casting Excellence
In‑house chemistry and hardness testing guarantees material consistency.
Pattern shop with CNC precision for custom cast iron back boiler molds.
Founded in 2005, our foundry covers 20,000 m² and employs over 120 skilled workers. We produce 3,000 tons of castings annually, with a dedicated QA team that performs 100% hydrostatic pressure testing on every back boiler. Our export arm, Shijiazhuang TJJ Trade Co., Ltd., handles all paperwork, logistics, and customs clearance so you can focus on selling.
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Ready to Secure Your Cast Iron Back Boiler Supply? Let’s Talk.
We provide free engineering review for your existing design. Request a quotation or sample set today.
Contact us directly:
Tel/WhatsApp: +86‑15511680668
Email: sindyhao2014@163.com
Web: Contact Page
Or fill in your requirements, and we will reply within 12 hours.
Frequently Asked Sourcing Questions
- Can you produce a cast iron back boiler with a custom water outlet configuration? Yes – our OEM team adjusts the port locations per your drawing.
- What is the typical lead time for a 20‑foot container of back boilers? Usually 30 days from pattern approval.
- Do you have experience with North American boiler standards? Absolutely. We have supplied UL‑listed units to Canadian and US distributors.
- How do you ensure quality control for large orders? Each casting undergoes dimensional check, pressure test, and visual inspection; third‑party inspection accepted.
Disclaimer: All product parameters, certifications, and commercial terms provided on this page are for reference only. Actual specifications, lead times, and pricing are subject to final written order confirmation. SHIJIAZHUANG TJJ TRADE CO.,LTD. reserves the right to modify technical details. Always consult our sales team for the latest information.
