🏭 Powerful Factory, Precision Process

Founded in 2003 and covering 25,000 square meters, TJJ operates with 150 experienced employees including 12 senior foundry engineers. Our production lines include:

• Resin sand casting lines for complex ornamental designs
• Automatic molding machines for high-volume repeating parts
• CNC machining centers for post-casting precision
• Hot-dip galvanizing and powder coating stations with thickness control

We produce 2,500+ metric tons of finished iron goods annually, with capacity to scale to 4,000 tons for large projects.

✅ Quality Assurance That Matches US Expectations

Our quality system is built on ISO 9001:2015 certified processes, but we go further for American buyers:

• Chemical composition verified by spectrometer for each heat (C, Si, Mn, P, S, etc.)
• Dimensional inspection using calibrated CMM and go/no-go fixtures
• Tensile and hardness testing per ASTM A48 / A536 standards
• Salt spray testing (ASTM B117) for corrosion resistance validation
• Pre-shipment inspection reports with photos and measurement records

*Please refer to the actual order confirmation for applicable standards and testing scope.

🎨 OEM/ODM Design — Your Brand, Your Specs

Whether you need custom baluster profiles, unique post cap geometries, or private-label packaging, TJJ's design team works from your drawings, samples, or conceptual sketches. We provide:

• Free 3D modeling and mold design for confirmed orders
• Rapid prototype samples (7-12 working days for most parts)
• Custom surface finishes: matte black, antique bronze, rusted patina, galvanized, or powder-coated in any RAL color
• Branded packaging with your logo, UPC codes, and assembly instructions

MOQ: Typically 300-500 pieces per design, but lower MOQs available for sample orders or repeat designs.
Tooling cost: One-time mold fee, amortized over first order.

🚀 High-Speed Delivery with China Supply Chain Advantage

Speed matters in B2B procurement. TJJ's integrated foundry and export team eliminates middleman delays:

• Sample lead time: 7-12 working days (custom designs) / 3-5 days (existing designs)
• Production lead time: 25-35 working days for standard orders (20-40ft container)
• Shipping: FOB Tianjin / Qingdao, or CIF to major US ports (Los Angeles, Seattle, Houston, New York)
• Expedite option: 15-20 working days for partial container (50-60% capacity) with express surcharge

We maintain 95% on-time shipment rate over the past 3 years across 1,200+ containers exported.

Scenario 1: Ornamental Fence for US Housing Communities

A Florida-based importer needed 12,000 balusters and 2,000 post caps for a gated community project. TJJ supplied ductile iron balusters with a two-coat powder finish (black texture + clear topcoat) that passed 200-hour salt spray testing. Result: zero field failures, installation completed 3 weeks ahead of schedule.

Scenario 2: Cast Iron Fittings for Commercial Plumbing

A Chicago distributor replaced their previous cast iron source due to 18% reject rates. TJJ provided GJS-500 ductile iron fittings with EN 877 compatible dimensions and epoxy coating. First container passed with 99.2% acceptance rate. Now they are in their 4th year of partnership, importing 6 containers annually.

Scenario 3: Custom Wrought Iron Gates for Brand Owners

A Texas brand owner wanted a "rustic Texas" aesthetic for their residential gate line. TJJ developed a custom patina finish with wax seal, matching their brand color standard. MOQ was 150 units per size. The line launched successfully and achieved 4.7-star retail reviews.

"We switched to TJJ after persistent quality issues with our previous China supplier. The difference was immediate — consistent castings, accurate dimensions, and proper packaging. Our installation crew noticed fewer adjustments needed on site. We're now on our 8th container."

"TJJ helped us develop a custom line of decorative iron panels for the South American market. Their OEM process was smooth — they sent us 3D renderings before mold making, and the samples matched perfectly. Lead times were faster than local suppliers."

"We import iron fence components for large residential projects. TJJ's quality is superior to what we used to source from India. Their communication is clear, and they respect shipping schedules. The pre-shipment photos give us confidence before cargo leaves."

"We needed cast iron furniture legs with a specific antique finish. TJJ's sample was spot-on, and the production run maintained the same quality. Their attention to environmental compliance (REACH, RoHS) made our documentation process easier for EU customs."

"I was initially skeptical about working with a Chinese foundry for custom wrought iron gates. TJJ changed my perspective. They understood my design intent from the CAD files, suggested improvements for castability, and delivered a product that my customers love. Highly recommended for custom iron goods."

Main foundry floor — resin sand casting line

Dimensional inspection using CMM equipment

Finished iron fence parts ready for container loading

Written by: Liu Wei — Senior Foundry Engineer & Export Quality Lead

Liu Wei has spent 18 years in the Chinese iron casting industry, the last 12 at TJJ overseeing export quality and technical development for North American and European clients. He has personally visited over 40 US job sites to understand installation requirements and failure modes. Liu holds a degree in Materials Engineering from Hebei University of Technology and contributes to ASTM committee discussions on cast iron standards.