Discover how the exact diameter of a basketball impacts game performance and purchasing decisions for corporate buyers in the USA and English-speaking markets.
When sourcing basketballs for professional, training, or recreational use, corporate purchasing managers often face these critical pain points:
These challenges translate into operational inefficiencies and increased costs, directly impacting your ROI. You need a trusted partner that guarantees product precision, quality assurance, and optimized delivery.
At Hebei Starry Sports Goods Co, Ltd, we specialize in delivering basketballs with exact diameters that meet professional standards, supporting clients in the USA and English-speaking regions with:
This combination empowers you to reduce procurement risks, enhance your product lineup, and maximize ROI.
| Parameter | Value / Range | Notes |
|---|---|---|
| Standard Diameter (Size 7) | 9.39 inches (23.85 cm) ± 0.05 cm | FIBA, NBA official size for men's basketballs |
| Circumference | 29.5 inches (75 cm) | Measured at widest point of inflated ball |
| Weight | 22 oz (620-650 g) | Within official game ball standards |
| Material | Composite leather / Genuine leather / Rubber | Varies per product line and customer customization |
| Inflation Pressure | 7.5-8.5 psi (0.52-0.59 bar) | Optimal performance pressure range |
| Certifications | ISO 9001, CE, RoHS, FDA, CCC | Ensures compliance with US and international standards |
diameter of basketball ball diameter of a basketball ball diameter of size 7 basketball
Our size 7 basketballs have a standard diameter of approximately 9.39 inches (23.85 cm) with a circumference of 29.5 inches (75 cm), fully compliant with NBA and FIBA official regulations.
Yes, we offer OEM/ODM services including diameter tolerances, composite or leather materials, and branding to fit your specific market and quality requirements.
Our lead times range from 15 to 30 days depending on order volume. We utilize sea freight via Tianjin Port and air freight options to optimize shipping costs and delivery speed.

Our products carry ISO 9001, CE, RoHS, FDA, and CCC certifications, ensuring compliance with international safety, environmental, and quality standards.
Yes, we offer a 12-month warranty against manufacturing defects and dedicated after-sales service including replacement and technical support.
Contact us via our online inquiry form, WhatsApp (+86 15713370191), or email (starry005@ballschina.com). We respond within 24 hours with quotations and production timelines.
Limited-time Offer: Place your order within the next 7 days to enjoy priority production scheduling and special shipping rates.
Risk-Free Guarantee: Request a free sample basketball with exact diameter and material specifications before bulk ordering. We also provide a money-back guarantee on all certified products.
Or contact us directly:
John D., Operations Manager, California
"The basketballs from Hebei Starry are consistently precise with diameter and weight. We've improved our training programs thanks to their quality and fast delivery."
Linda M., Purchasing Director, New York
"Their OEM customization allowed us to create branded basketballs that perfectly fit our retail needs. The diameter accuracy avoids any compliance issues in US leagues."
Carlos R., Supply Chain Manager, Texas
"Reduced our shipping costs by 18% due to Hebei Starry's location and logistics. The durability of their basketballs helps us reduce frequent reorders."
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