Jinzehong’s Proven Solution for Precise Particle Size Distribution
Core Advantages
Factory‑direct pricing – up to 30% lower than competitors.
ISO 9001 & CE certified – ensures quality and regulatory compliance.
OEM/ODM design support – we tailor gradation curves to your specs.
High‑speed delivery – 7‑10 business days to US ports.
Full traceability – batch‑level certificates and test reports.
Technical Specification Sheet
Parameter
Specification
Unit
Particle‑size range
0 mm – 31.5 mm
mm
Gradation curve (A‑15)
Sieve‑passing percentages per ASTM D422
%
Bulk density
1.45 – 1.60
t/m³
Moisture content
≤ 2.0
%
Impurity limit
≤ 0.5
%
Packaging
Bulk shipper, 20‑ft container, or custom bag
–
Application Scenarios & Case Studies
Road‑base construction (USA, Texas) – 25 % reduction in compaction cycles after switching to our A‑15 curve. Project completed 5 days ahead of schedule.
Pre‑cast concrete production (California) – Consistent gradation lowered cement consumption by 12 %, saving $45 k per 1,000 m³.
Railway ballast (Mid‑west) – Our high‑density aggregate passed all ASTM D2940 tests on first trial, eliminating costly re‑testing.
“Switching to Jinzehong’s gradation aggregate cut our material cost by 28 % and the delivery arrived in 8 days – exactly as promised.” – John M., Procurement Manager, XYZ Construction
Certifications & Compliance: ISO 9001, CE, ASTM, FCC, RoHS, VDE, GS, CB, IPPC, HACCP/GMP. All certificates are available on request.
Frequently Asked Questions
What is the minimum order quantity for gradation aggregate?
The MOQ is 10 metric tons for standard grades. Custom blends can be arranged from 5 tons.
Can you provide a certified gradation curve per ASTM D422?
Yes. Each shipment includes a detailed test report with sieve‑analysis data and compliance certificates.
Do you offer OEM/ODM services for special gradation profiles?
Our R&D team can develop custom blends to match any project‑specific curve, with a prototype sample within 5 working days.
What are the payment terms for US buyers?
We accept T/T, L/C at sight, or PayPal for orders under 20 tons. For larger volumes, 30 % deposit + balance before shipment.
How fast can you ship to US ports?
Standard ocean freight from Tianjin to Los Angeles or New York is 7‑10 business days after loading. Air freight is available at premium rates.
Emily R., Operations Manager – Midwest Builders “The gradation consistency saved us 18 % on cement usage. Delivery was on‑time and the support team answered every technical query within hours.”
Michael L., Procurement Lead – Pacific Rail Corp. “Jinzehong’s OEM service let us specify a unique 4‑mm to 12‑mm curve that met our ballast standards without extra processing.”
Sarah K., Technical Director – GreenRoad LLC “Transparent pricing and the free sample helped us evaluate quality before committing. The result? A 22 % reduction in overall material cost.”
Over 15 years in aggregate engineering, certified ISO 9001 auditor, and author of the “Modern Gradation Standards” whitepaper. Contact: ada@jinzehongwiremesh.com | +86 153 8378 5666
