Cast Iron Lamp Post Base: Specs, Sourcing & OEM Manufacturing Guide for 2026

James Whitfield
Senior Sourcing Consultant, 18+ years in architectural metalworks procurement. Former category manager at a top-10 US hardware distributor; now advising North American importers on China foundry partnerships.

Why Buying a Cast Iron Lamp Post Base from the Right Foundry Matters

Import managers and brand owners who source cast iron lamp post bases face a common set of challenges:

• ❌ Inconsistent casting quality — porosity, thin walls, or misaligned bolt patterns that cause field installation failures.
• ❌ Long lead times and poor communication — especially when dealing with brokers who don't control production.
• ❌ Non-compliant coatings — finishes that don't meet ASTM B117 salt spray standards for outdoor use in North America.
• ❌ Hidden tooling and pattern costs — unexpected mold charges that erode margin on custom designs.

TJJ addresses each of these pain points directly. As a vertically integrated foundry and export company, we control every step from pattern making to final packing. Our 20+ years of experience serving US, South American, European, and African markets means we understand what it takes to deliver a cast iron lamp post base that installs cleanly, lasts decades, and meets your local code requirements.

Cast Iron Lamp Post Base – Technical Specifications & Material Options

Our standard cast iron lamp post bases are produced in accordance with ASTM A48 Class 30B (grey iron) and ASTM A126 Class B for valve-grade applications where higher strength is required. The tables below outline standard dimensions, material grades, and finish options available for OEM and wholesale orders.

Table 1: Standard Cast Iron Lamp Post Base Dimensions (Inches)

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Note: Custom dimensions and bolt patterns are available through OEM design. All measurements are nominal and subject to standard casting tolerances. Refer to actual order confirmation for final dimensions.

Table 2: Material Grade & Finish Options

Standard finishes: TJJ offers powder coating (polyester or epoxy, 80–120 µm) in RAL or custom colors, hot-dip galvanized (ASTM A123), and black oxide with wax seal for interior-fit applications. All outdoor coatings are validated with 500+ hour ASTM B117 salt spray testing to ensure performance in coastal and de-icing salt environments.

TJJ foundry floor — precision casting and finishing lines for cast iron lamp post bases. Over 20 years of continuous operation.

Manufacturing & Quality Assurance — What a US Importer Should Expect

TJJ's foundry in Shijiazhuang, Hebei Province, operates with ISO 9001:2015 certified quality management systems. Our production process for every cast iron lamp post base follows a controlled sequence:

1. Pattern making — CNC-machined wood or resin patterns with shrinkage compensation. Existing patterns for standard bases available at no tooling cost.
2. Molding & pouring — Green sand or resin sand molding with spectrographic analysis for each melt (CE carbon equivalent control).
3. Fettling & grinding — Removal of flash, gates, and risers; dimensional inspection per approved drawing.
4. Heat treatment — Stress relief annealing (if specified) to eliminate internal stresses in complex geometries.
5. Finish application — Powder coating or galvanizing with pre-treatment (degrease, rinse, phosphate).
6. Final QC — 100% visual inspection + 10% dimensional sampling per ASTM A48; bolt hole gauge check on every unit.

Every shipment of cast iron lamp post bases includes a Mill Test Certificate with actual chemistry and mechanical property results. Third-party inspection (SGS, Bureau Veritas, or TÜV) is available at buyer's cost and can be arranged during production.

OEM/ODM Design — Custom Cast Iron Lamp Post Bases for Brand Owners

TJJ is not a catalog-only supplier. We partner with brand owners, landscape architects, and municipal specifiers to develop bespoke cast iron lamp post base designs that match signature lighting collections. Our OEM/ODM capabilities include:

• Custom pattern development — From 2D drawings or 3D STEP/IGES files to finished patterns in 3–4 weeks.
• Logo & branding — Cast-in logos, serial numbers, or raised lettering on flange or body.
• Bolt pattern customization — Adapt to any anchor bolt configuration (4-bolt, 6-bolt, slotted holes, etc.).
• Hybrid material design — Cast iron base with stainless steel threaded inserts or aluminum post adapter for dual-material applications.
• Packaging & labeling — Private label packaging with your SKU, barcode, and installation instructions.

Our engineering team can also review your design for castability — adjusting wall thicknesses, fillet radii, and draft angles to reduce weight and cost without compromising strength. Minimum OEM order quantity: 100 pieces per design, with pattern amortization over the first production run.

China's Supply Chain Advantage — Why TJJ Delivers Faster and More Reliably

As a direct foundry and export company based in China's core iron casting region, TJJ benefits from several structural advantages that benefit North American importers:

• Consolidated raw material sourcing — We purchase pig iron, scrap, and alloys in bulk from local mills, reducing material cost variance by 5–8% vs. smaller foundries.
• In-house pattern shop — Eliminates third-party pattern maker delays and markups. Typical pattern lead time: 15 working days for simple designs.
• Dedicated export logistics desk — We manage container booking, cargo loading, and documentation from Tianjin or Qingdao. FOB, CIF, or DDP terms available.
• English-speaking project managers — Each US client is assigned a dedicated coordinator who responds within 12 business hours (typically same-day, given time zone overlap until 11am EST).

Ordering Terms — MOQ, Lead Time, Packaging, Logistics & After-Sales

Minimum Order Quantity (MOQ)

• Standard designs (existing patterns): ≥ 100 pieces per size
• OEM/custom designs (new pattern): ≥ 300 pieces total across shipped orders (pattern cost amortized)
• Sample order (pre-production): 1–5 pieces at production cost + tooling (if applicable). Sample lead time: 20–30 days.

Lead Time (from order confirmation)

• No new pattern: 25–35 days
• With new pattern: 35–50 days (including pattern making)
• Rush orders (partial shipment): Negotiable — contact our sales team for availability

Packaging

• Individual wrapping: Each base in EPE foam sleeve + polybag
• Group packing: 5–10 pieces per plywood crate, with foam dividers
• Palletizing: Standard 20" or 40" pallets, shrink-wrapped and strapped
• Marking: Carton stencils with P/N, quantity, net/gross weight, and handling instructions
• Container loading: 20GP: ~800–1200 pieces (depending on size); 40HQ: ~1800–2600 pieces

Logistics & Payment

• Incoterms: FOB Tianjin/Qingdao, CIF to major US ports (Los Angeles, Long Beach, Savannah, New York/Newark)
• Payment terms: T/T (30% deposit, 70% before shipment), L/C at sight for confirmed orders
• Documentation: Commercial invoice, packing list, bill of lading, certificate of origin (Form FTA available for US importers), MTC, fumigation certificate (for wooden crates)

After-Sales Warranty

TJJ provides a 12-month warranty from the date of bill of lading against manufacturing defects, including cracks, excessive porosity (>2% surface area per piece), coating delamination, and dimensional non-conformance beyond standard tolerance (±1.5% for cast dimensions). Claims are processed within 5 business days with replacement or credit resolution.

Application Scenarios — Where Cast Iron Lamp Post Bases Deliver Value

Unlike aluminum or polymer bases, cast iron lamp post bases provide a combination of mass, stability, and traditional aesthetics that is preferred in specific environments:

What Buyers Say — Reviews from Import Managers & Brand Owners

David Chen
Procurement Manager, West Coast Lighting Supply (California)

"We have sourced cast iron lamp post bases from TJJ for three consecutive years — over 15,000 units delivered. The dimensional consistency is better than our previous supplier from India. Bolt holes align every time, which saves us hours of field modification. Lead times have been within 30 days for standard sizes."

Sarah Mitchell
Owner, Mitchell Landscape & Lighting (Texas)

"I needed a custom base with a specific bolt pattern for a municipal park project. TJJ's engineering team modified the pattern in two weeks. The powder coating finish exceeded our expectations — no fading after 18 months in Texas heat. MOQ of 100 was manageable for a trial run."

Michael O'Donnell
Sourcing Agent, O'Donnell Hardware Imports (Florida)

"TJJ is one of the few Chinese foundries that consistently sends MTCs with actual spectrographic analysis — not just a template. Their QC documentation helped us pass a city inspection without additional testing. FOB pricing was competitive with other Tier 2 foundries."

James Hartfield
Product Development Director, Hartfield Ironworks (Georgia)

"We were sourcing from two foundries and consolidated with TJJ after a trial. Their cast iron lamp post bases have cleaner surface finish — less grinding needed before powder coating. Communication is responsive, and they handle the logistics documentation without errors. Recommend for anyone tired of chasing suppliers."

Certifications & Compliance — Meeting US Import Requirements

TJJ's cast iron lamp post bases are produced under quality systems and material standards that align with North American regulatory expectations:

• ISO 9001:2015 — Quality management system certified (certificate available on request)
• ASTM A48 / A126 / A536 — Material compliance for grey and ductile iron grades
• ASTM A123 / A153 — Hot-dip galvanizing specifications (when specified)
• ASTM B117 — Salt spray testing for coated finishes (standard: 500+ hours; up to 1000+ hours available)
• RoHS Directive 2011/65/EU — Coatings and materials compliant with restricted substance requirements
• REACH Regulation (EC) 1907/2006 — Compliance declaration provided for all chemical substances in coatings
• Fumigation Certificate — IPPC-compliant heat treatment for wooden crates and pallets

Note: CE marking can be provided for export to European markets. For US projects, material certifications and test reports are typically sufficient to satisfy municipal building code requirements. Buyers should verify local code requirements with their jurisdiction.

TJJ foundry facility — established in 2004, covering 12,000 sqm with dedicated casting, finishing, and warehousing zones.

About Shijiazhuang TJJ TRADE CO., LTD.

Founded in 2004 and operating continuously for over 20 years, TJJ is one of the earliest cast iron foundries in the Hebei province industrial cluster. We employ 120+ skilled workers and engineers across our foundry, pattern shop, finishing line, and export office. Our facility covers 12,000 square meters with an annual production capacity of 8,000+ metric tons of iron castings.

Beyond cast iron lamp post bases, our product range includes ornamental iron fence components, balusters, decorative panels, post caps, window and gate accessories, and cast iron pipe fittings. We export primarily to the United States, South America, Europe, and Africa — with a growing customer base among US municipal specifiers, landscape lighting brands, and architectural ironwork distributors.

Our mission is to provide consistent quality, transparent communication, and supply chain reliability — not the lowest price with hidden costs, but the best total value for B2B importers who need a long-term foundry partner.

Ready to Source Your Cast Iron Lamp Post Base?