What is your minimum order quantity (MOQ)?

Our MOQ is flexible and negotiable depending on the product type and customization requirements. For standard products, we can accept smaller trial orders. Contact our sales team for specific MOQ details.

Do you offer OEM/ODM services?

Yes, we offer comprehensive OEM/ODM services including custom branding, logo printing, color customization, packaging design, and product development based on your specifications. Our engineering team can bring your ideas to production.

What certifications do your products have?

Our products are certified with ISO 9001 quality management system, CE, RoHS, and EN 957 standards. We also support additional certifications based on your market requirements including ASTM, GS, and TUV.

What is the typical lead time for production?

Standard production lead time is 25-35 days after deposit and sample confirmation. Customized orders may require additional time. We maintain efficient production scheduling to ensure timely delivery.

Can I request samples before placing a bulk order?

Yes, we welcome sample orders for quality evaluation. Sample fees are refundable upon bulk order confirmation. Sample production typically takes 7-15 days depending on the product complexity.

What payment terms do you accept?

We accept T/T (30% deposit, 70% before shipment), L/C at sight, Western Union, and other negotiated payment terms. All transactions are secure and protected.

ZEALLSPORT is a leading commercial gym equipment manufacturer based in Nantong, China. With 15+ years of experience, we produce premium fitness equipment for global brands, gyms, and distributors. Our 50,000+ sqm factory is ISO 9001 and CE certified, serving 1,500+ customers in 60+ countries.

Where is ZEALLSPORT located?

ZEALLSPORT is headquartered at No.475, Chenggang Road, Nantong, Jiangsu, China 226000. Our factory is conveniently located near Shanghai port, ensuring efficient logistics and fast delivery to global markets. Contactez-nous au sales@zeallsport.com or +86 513-6681-9918.

Do you offer OEM/ODM services?

Yes! ZEALLSPORT specializes in OEM/ODM services for global fitness brands. We can customize products with your brand logo, colors, packaging, and specifications. Our engineering team handles design, prototyping, testing, and mass production. Minimum order quantities apply for custom branding.

What certifications do your products have?

ZEALLSPORT products are certified to international standards including ISO 9001 (Quality Management), CE (European Conformity), RoHS (Restriction of Hazardous Substances), REACH (Registration, Evaluation, Authorization and Restriction of Chemicals), EN 957 (Stationary Training Equipment), and ASTM (American Society for Testing and Matériaus).

What is your minimum order quantity (MOQ)?

Our MOQ varies by product type. For standard products, MOQ is typically 10-50 units. For OEM/ODM custom products, MOQ ranges from 50-200 units depending on complexity. We offer flexible ordering options for first-time buyers and sample orders. Contact our sales team for specific MOQ details.

How long is the production lead time?

Standard production lead time is 15-30 days depending on order quantity and product complexity. OEM/ODM custom orders may require 30-45 days including sample approval. Sample orders typically ship within 3-7 days. We provide detailed production schedules and regular updates throughout the manufacturing process.

What payment terms do you accept?

We accept T/T (Telegraphic Transfer) with 30% deposit and 70% balance before shipment. We also accept L/C (Letter of Credit) at sight for larger orders. For established customers, we may offer flexible payment terms. All payments are secured and protected through our verified trade assurance program.

Do you provide after-sales support?

Yes! ZEALLSPORT provides comprehensive after-sales support including: 1-3 year warranty on all products, spare parts supply, technical support via email/phone/WhatsApp, installation guides and videos, maintenance training, and responsive customer service. Our dedicated support team ensures your equipment operates at peak performance.

Can I visit your factory?

Absolutely! We welcome factory visits by appointment. Our factory is located in Nantong, Jiangsu, approximately 2 hours from Shanghai. We can arrange airport pickup, hotel accommodation, and a comprehensive factory tour including production lines, quality control, R&D center, and showroom. Contactez-nous pour schedule your visit.

What shipping options do you offer?

We offer multiple shipping options: Sea freight (FOB Shanghai/CIF/DDP), Air freight for urgent orders, Express delivery (DHL/FedEx/UPS) for samples, and Land transport for nearby regions. We can ship to your designated forwarder or handle complete logistics including customs clearance. Our logistics team ensures safe, timely delivery worldwide.

Product Kettlebells | ZEALLSPORT Commercial Gym Equipment

Cast Iron Kettlebells - In Commercial Gym

Qualité Professionnelle / Usine de Nantong / OEM Disponible

Lot de Kettlebells Fonte (4-40kg)

★★★★★

4.8 (64 avis)

Premium cast iron kettlebells with smooth powder-coated finish for chalk-friendly grip. Base plate pour la stabilité and renegade rows, wide smooth handle for high-rep work, color-coded by weight for easy identification. Available 4-40kg in 2kg/4kg increments. The workhorse of any functional training area, CrossFit box, or commercial gym. OEM custom colors and logo engraving available.

Demander un Devis Demander le Prix OEM

Construction en fonte solide

Revêtement poudre amical avec craie

Couleur-coded weight identification

Base plate pour la stabilité

Poignée large lisse (35mm)

4-40kg full range

OEM custom colors & logo

Certifié CE & ISO 9001

Specifications

FAQ

Livraison & OEM

Avis

Spécifications Techniques

Matériau	Solid cast iron (ASTM A48)
Poids Range	4kg - 40kg (2kg/4kg increments)
Tolérance de Poids	±3%
Diamètre de la Poignée	35mm (smooth, no knurl)
Finish	Powder-coated (matte black standard)
Couleur Coding	Poids-specific color bands
Base	Flat bottom for upright storage
Marking	Embossed kg / lb weight
Custom Couleurs	Pantone matching available (OEM)
Certifications	CE, ISO 9001, RoHS

Emballage & Livraison

Emballage	Individual polybag + carton
Carton Taille (4kg)	22 x 18 x 25 cm
Carton Taille (40kg)	35 x 28 x 38 cm
Gross Poids (full set)	~220 kg (4-40kg set)
Sets per 20ft Container	~80 full sets
Sets per 40ft HQ	~180 full sets
Lead Time (Standard)	15-20 days
Lead Time (OEM)	25-35 days
Port of Loading	Shanghai, China
Conditions de Paiement	T/T 30% deposit, 70% before shipment

Hierro fundido kettlebells vary in size by weight — heavier bells are physically larger. Competition kettlebells are all the same dimensions regardless of weight, with a uniform 35mm handle, and are made from steel. Hierro fundido is more affordable and suitable for general gym use; competition bells are preferred for kettlebell sport training. We offer both types.

You can order individual kettlebells in any weight from 4-40kg. MOQ for individual weights is 10 pieces (can be mixed weights). Full sets (4-40kg) are also available and offer better per-unit pricing. Contact us for a custom quotation based on your specific needs.

Yes. We offer custom powder coat colors with Pantone matching for OEM orders. Many gym chains and distributors choose custom colors to match their brand identity. MOQ for custom colors is 50 pieces per color. We can also provide color samples before mass production.

Our cast iron kettlebells have a 35mm diameter smooth handle (no knurling). This is the standard for kettlebell training — a smooth handle allows the bell to rotate freely in the hand during snatches and cleans, which is essential for high-rep kettlebell work. The powder-coated finish provides enough grip when used with chalk.

OEM / ODM Services for Kettlebells

We offer comprehensive OEM services for kettlebells, serving CrossFit boxes, gym chains, and fitness distributors worldwide. Our foundry and powder coating line allow full customization from color to branding.

OEM Services

Custom powder coat colors (Pantone)
Embossed or laser-engraved logo
Custom color-coding system
Custom printed packaging
Private label documentation
Custom weight ranges

ODM Services

Custom kettlebell shape design
Nouveau cast iron mold development
Competition-style steel kettlebell
Unique handle ergonomics
Complete product line development
Exclusive manufacturing agreements

Discuss Your Kettlebell OEM Project

★★★★★

Jason L.CrossFit Box Owner, Austin

"Bought a full set of 4-32kg for our box. The powder coat holds up great to chalk and daily use. Handles are smooth and the right thickness. Flat bottom is perfect for renegade rows. Best value kettlebells we've found."

★★★★☆

Emma W.Studio Owner, Melbourne

"Good quality kettlebells at a fair price. The color coding helps our members pick the right weight. Only minor issue: the 4kg bell is quite small, but that's standard for cast iron. Would order again."