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Premium Stainless & Carbon Steel Balls

ISO9001-Certified Manufacturer from China | Precision Steel Balls Ranging from 0.1mm to 1000mm | G5–G2000 Accuracy | SGS & RoHS Certified

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15+ Years

Industry Experience

ISO9001:2008

Quality Certified

Global Reach

Exported to 50+ Countries

Trusted Steel Ball Manufacturer Since 2008

Shandong JinNai International Trade Co., Ltd. is a leading professional manufacturer specializing in precision steel balls and engineered metal spheres. With over 15 years of industry expertise, we have established ourselves as a reliable supplier of high-quality stainless steel, carbon steel, chrome steel, and specialty balls for industrial, commercial, and decorative applications.

Headquartered in Jinan City, Shandong Province, China, with a branch in Hong Kong, we maintain strong partnerships with top-tier factories and research institutions across China. Our commitment to innovation, quality, and customer service has earned us a respected reputation in both domestic and international markets.

  • ISO9001:2008 Certified
  • SGS & RoHS Compliant Products
  • Size Range: 0.1mm – 1000mm
  • Precision Grades G5 to G2000
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Factory Production Line

Our Premium Products

Explore our wide range of precision-engineered steel balls, hollow spheres, and specialty components designed for industrial, mechanical, and decorative applications.

Stainless Steel Hollow Ball

304 Grade Stainless Hollow Steel Ball

200mm, Wall Thickness 1.0MM – 1.5MM

Stainless Steel Balls Contact Now
Silicone Rubber Ball

Silicone Rubber Ball

Hard EPDM Rubber Solid Balls, Black

Silicone Rubber Ball Contact Now
Hollow Copper Half Sphere

Hollow Copper Half Sphere

35mm – 42mm, High Electric Conductivity

Hollow Half Sphere Contact Now
Polyurethane Rubber Ball

Polyurethane Silicone Rubber Ball

5mm – 50mm, Sieve & Vibrating Screen Use

Hollow Plastic Balls Contact Now
SS304 Stainless Steel Balls

SS304 / SS316 Solid Stainless Steel Balls

0.5mm – 200mm, G100 Precision

Stainless Steel Balls Contact Now
Chrome Steel Balls

AISI52100 Chrome Steel Balls

GCr15, High Precision 12.7mm, G10/G20/G100

Chrome Steel Balls Contact Now
Hollow Half Sphere

Hollow Half Sphere

304 Mirror Polished, 1mm Thickness

Hollow Half Sphere Contact Now
Carbon Steel Ball

AISI1010/1015 Soft Carbon Steel Ball

Hardenable, 3/16" for Bicycle Bearings

Carbon Steel Ball Contact Now
View All 335 Products

Why Choose Our Steel Balls?

Certified Quality

ISO9001:2008, SGS, and RoHS certified manufacturing processes ensure consistent quality and compliance.

High Precision

Available in precision grades from G5 to G2000, ensuring perfect roundness and dimensional accuracy.

Global Export

Trusted by clients in over 50 countries with reliable logistics and packaging solutions.

Custom OEM/ODM

We support custom sizes, materials, finishes, and packaging to meet your exact specifications.

Competitive Pricing

Direct factory pricing with volume discounts and long-term partnership benefits.

Fast Response

Dedicated sales team available to respond to inquiries within 24 hours.

Advanced Quality Control Systems

At Shandong JinNai, quality is not an afterthought—it's built into every stage of production. We utilize state-of-the-art inspection equipment to ensure every steel ball meets the highest standards of roundness, surface finish, and dimensional accuracy.

Our quality assurance team performs rigorous testing for hardness, sphericity, surface defects, and material composition. With ISO9001:2008 certification and compliance with SGS and RoHS standards, you can trust that every product we deliver is consistent, reliable, and fit for purpose.

  • Roundness & Libration Testing
  • Surface Quality Inspection
  • Hardness & Material Verification
  • Batch Traceability & Documentation
Learn About Our Factory
Quality Control Inspection

Frequently Asked Questions

What materials do you offer for steel balls?

We manufacture stainless steel (201, 304, 316, 420, 440C), carbon steel (1010, 1015, 1045), chrome steel (AISI52100), copper, brass, aluminum, tungsten carbide, plastic, rubber, and ceramic balls.

What is the size range of your steel balls?

Our production capabilities cover diameters from 0.1mm to 1000mm, including micro-balls and large decorative spheres.

Do you provide custom drilling or threading?

Yes, we offer steel balls with holes (M2, M6, M8, M12) and threaded options for specialized applications in machinery and fixtures.

Can you support OEM/ODM orders?

Absolutely. We offer full OEM and ODM services including custom packaging, labeling, and product specifications.

What certifications do you hold?

We are ISO9001:2008 certified, and our products comply with SGS and RoHS standards for quality and environmental safety.

Get in Touch With Us

Ready to place an order or need technical support? Contact our team today for fast, professional service.

Shandong JinNai International Trade Co., Ltd.
86-159-10105035
[email protected]
Xueshan Road, Licheng District, Jinan City, Shandong, China
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