High-Strength Heavy Duty Clevis for Rigging & Construction | China OEM Foundry
Sourcing a heavy duty clevis for demanding construction, marine, or agricultural applications means prioritizing tensile strength, consistent quality, and reliable lead times. As an Import Manager, Brand Owner, or Sourcing Agent, you need a supplier who understands ASTM/ASME standards and can execute complex OEM specifications without compromising safety. Shijiazhuang TJJ TRADE CO.,LTD. bridges the gap between cost-effective Chinese manufacturing and rigorous international quality assurance for heavy duty clevis components.
4 Common Sourcing Challenges for Rigging Hardware Buyers
Import Managers and Wholesalers face recurring risks when sourcing metal components internationally. These pitfalls directly impact your brand reputation and bottom line:
- Inconsistent Metallurgy: Standard low-grade clevises often fail tensile tests, leading to costly field failures and safety violations under OSHA standards.
- Imprecise Dimensions: Variations in pin diameter or leg thickness cause assembly delays in the field, increasing labor costs for your end-users.
- Poor Surface Finish & Coating: Inadequate zinc plating or hot-dip galvanizing results in premature rusting, especially in marine or high-humidity environments.
- Supply Chain Bottlenecks: Smaller foundries lack the capacity to scale for large orders, pushing your project timelines behind schedule.
TJJ was founded specifically to solve these exact problems for demanding international clients.
Why TJJ is Your Trusted Heavy Duty Clevis Manufacturer
Shijiazhuang TJJ TRADE CO.,LTD. operates a vertically integrated foundry in Hebei Province, China, with over 20 years of casting experience. Unlike trading companies that outsource to unknown workshops, we control the entire process—from raw material selection to final machining.
Factory Snapshot
| Attribute | Detail |
| Years in Operation | 20+ Years (Founded in early 2000s) |
| Facility Area | 15,000+ sqm |
| Employees | 120+ Skilled Technicians & Engineers |
| Core Capabilities | Sand Casting, Lost Wax Casting, Machining, Heat Treatment |
| Monthly Output | 500+ Tons of Finished Goods |
Heavy Duty Clevis: Technical Data & Application Scenarios
Our heavy duty clevis range covers from 1/2" to 2" sizes, manufactured primarily in Duplex Ductile Iron (ASTM A536) and Forged Carbon Steel (ASTM A563). We serve three primary sectors:
- Construction & Infrastructure: Used in structural steel connections and concrete formwork. Coated with HDG for long-term outdoor exposure.
- Marine & Offshore: Corrosion-resistant duplex stainless steel options for mooring lines and rigging.
- Agriculture & Heavy Earthmoving: Drop-forged clevises for tractor hitches (Category 2, 3, 4) requiring high impact resistance.
Standard Size & Load Chart (Reference)
| Size (Inch) | Working Load Limit (LBS) | Material Grade | Surface Treatment |
|---|---|---|---|
| 5/8" | 6,000 - 7,500 | Ductile Iron 65-45-12 | HDG / Zinc Plated |
| 3/4" | 10,000 - 12,000 | Forged C1030 Steel | HDG / Black Oxide |
| 1" | 16,000 - 18,000 | Forged Alloy Steel | HDG / Dacromet |
| 1-1/4" | 22,000 - 25,000 | Duplex Stainless / F55 | Passivated / HDG |
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Disclaimer: WLL values are typical references. Final certified ratings will be provided per batch based on testing. Always refer to the order confirmation for exact specifications.
Material Comparison: Cast vs. Forged Heavy Duty Clevis
| Feature | Cast Ductile Iron Clevis | Forged Steel Clevis |
|---|---|---|
| Tensile Strength | 65,000 - 80,000 PSI | 90,000 - 110,000 PSI |
| Cost Efficiency | High (Economical for large volumes) | Moderate (Higher tooling cost) |
| Best Application | Fencing, non-critical structural, general hardware | Lifting, towing, heavy rigging, critical safety parts |
| OEM Flexibility | Excellent (Complex shapes, logos) | Good (Simple shapes, high strength) |
Quality Assurance & International Compliance
Every batch of our heavy duty clevis undergoes a rigorous multi-stage QC process aligned with ISO 9001 management standards. We tailor our compliance to your destination country’s regulations:
- Chemical Analysis: Spectrometer testing on every melt to verify carbon, silicon, and manganese content.
- Mechanical Testing: Tensile, yield, and elongation tests performed at our in-house lab.
- Dimensional Accuracy: GO/NO-GO gauge inspection for pin diameter and leg spacing.
- Surface Quality: 100% visual inspection for porosity, cracks, and coating adhesion.
- Certifications Support: We provide Material Test Reports (MTRs) per EN 10204 3.1. Compliance with RoHS, REACH, and Proposition 65 standards can be confirmed per order.
OEM/ODM Heavy Duty Clevis Design & Fast-Track Supply Chain
Unlike standard catalog suppliers, TJJ treats your specifications as a starting point for optimization. Our engineering team provides DFM (Design for Manufacturability) feedback to reduce costs without sacrificing strength.
Our OEM Service Flow
- Inquiry & Spec Review: Share your drawings, load requirements, or samples. We provide a feasibility report within 48 hours.
- Tooling & Sampling: Rapid tooling (wood/plastic patterns) in 2-3 weeks. First-article samples shipped for approval.
- Mass Production: Batch production with inter-stage QC checks. Proportion sampling per AQL 2.5 standard.
- Packaging & Logistics: Custom packaging with your brand, barcodes, and assembly instructions. Consolidated shipping to FOB/CIF terms.
Delivery Advantage: Typical lead time for a standard heavy duty clevis is 25-35 days. For OEM parts, 30-45 days including sample approval. Our location in Hebei Province gives us fast access to Tianjin Port (largest comprehensive port in Northern China), ensuring streamlined container shipping to Los Angeles, Savannah, and Rotterdam.
Real Feedback from Global Buyers (Import Managers & OEMs)
"We replaced our domestic supplier with TJJ for a large infrastructure project. The heavy duty clevis quality was impeccable—tensile reports came back perfect. We saved 30% on landed costs."
- David R., Senior Procurement Manager, Texas (USA)
"As a brand owner, OEM capability was my primary requirement. TJJ flawlessly replicated our custom heavy duty clevis with our logo embossed. The MOQ flexibility was also a huge plus."
- Emily S., Owner, Midwest Rigging Supply (Iowa, USA)

"Marine environment corrosion was always a problem. TJJ suggested upgrading the coating to a duplex system on our heavy duty clevis. After 6 months in saltwater, zero rust. Outstanding."
- Mark K., Marine Hardware Distributor (Florida, USA)
"We appreciated the transparency. Sindy shared video walkthroughs of the casting line and QC testing. The delivery to the UK was 2 weeks earlier than quoted. Will reorder."
- James S., Project Director, Construction Supply Co. (UK)
"The dimensional tolerance on the 1-1/2" heavy duty clevis was perfectly matched to our existing inventory. Switching to TJJ consolidated our vendor list and simplified logistics."
- Anna P., Supply Chain Manager, Mining Equipment Corp (Canada)
About the Author & Industry Expertise
Sindy Hao is a Senior Export Manager at Shijiazhuang TJJ TRADE CO.,LTD. With over a decade of experience in the international ferrous casting trade, she specializes in bridging the gap between Asian manufacturing efficiency and Western quality standards. Sindy has personally facilitated over 200 successful OEM projects for US and European brands. Her deep understanding of ASTM, EN, and ASME standards ensures that every heavy duty clevis exported from TJJ meets or exceeds buyer expectations.
Business Terms: MOQ, Lead Time, Payment & Logistics
We structure our terms to facilitate a smooth, low-risk procurement process for first-time and returning importers.
| Minimum Order Quantity (MOQ) | 500 pcs for standard sizes (negotiable for OEM/trial orders) |
| Lead Time (Standard) | 25-35 days from down payment and drawing approval |
| Lead Time (OEM/Custom) | 30-45 days (incl. tooling & sample approval) |
| Payment Terms | T/T (30% deposit, 70% against Bill of Lading) / L/C at sight |
| Shipping Terms | FOB (Tianjin/Qingdao), CIF (US Main Ports), DDP (Consultation Required) |
| Packaging Options | Polybag + Carton + Pallet / Bulk Crates / Retail Ready with UPC (Fees apply) |
Ready to source a reliable Heavy Duty Clevis for your upcoming project?
Contact us directly for a detailed quotation and factory audit invitation.
Tel/WhatsApp: +86-15511680668 | Email: sindyhao2014@163.com
Company Address: Shijiazhuang, Hebei Province, China
Disclaimer: All technical data, load ratings, and lead times provided on this page are for initial reference only. Final specifications, compliance certifications, and delivery schedules will be strictly confirmed in the formal Sales Contract and Order Confirmation. Shijiazhuang TJJ TRADE CO.,LTD. reserves the right to improve product design without prior notice.