Products

Custom Marine Ballast Weights for Passenger & Cargo Vessels

Zunhua ShengjianFanrong Machinery Accessories Co., Ltd., located in Tangshan, Hebei, China, is a manufacturer and supplier primarily producing counterweight iron. ShengjianFanrong's durable Marine Ballast Weights maintain equipment balance and stability by adding weight.

The counterweights are primarily made of cast iron or ductile iron, and their core function is to improve the ship's resistance to roll and overall stability by adjusting the ship's center of gravity distribution.


FAQ

1. What are the main materials used in your counterweight products?

1. ShengjianFanrong's high-quality Marine Ballast Weights primarily use two materials: gray cast iron (HT200) and ductile iron (QT450).


2. Are you a manufacturer?

Yes, our company is a source manufacturer of counterweight products.


3. Can you send samples? How much does it cost?

We can send samples; the cost is negotiable.


4. What is the ordering process?

You send us your drawings, and we will provide a quote based on them. Then, we will arrange production and delivery.


What are the main application scenarios for this counterweight product?

Marine Ballast Weights are mainly used in shipbuilding, port machinery, marine engineering equipment, offshore engineering vessels, and passenger ships.


Why choose us?

1. ShengjianFanrong's advanced Marine Ballast Weights are made of high-quality cast iron or ductile iron, with high density. This allows for maximum equipment weight adaptation within limited space.

2. Personalized design, supporting custom orders based on drawings. We can customize counterweight products of different materials and shapes according to your drawings.

3. Comprehensive quality system.

We have a comprehensive quality inspection system, meticulously crafting every process. Quality is our bottom line and our pride.


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Tourism Boat Counterweights

Tourism Boat Counterweights

Shengjian Fanrong – a China-based supplier of premium Tourism Boat Counterweights. Engineered for passenger vessels, yachts, and sightseeing boats: highdensity cast iron, grooved handles for easy handling, zerogap placement, and modular design that maximizes ballast efficiency in limited hull spaces. Custom shapes available to match any vessel model.
Seafood Processing Vessel Counterweights

Seafood Processing Vessel Counterweights

Shengjian Fanrong manufactures 2000kg-class Seafood Processing Vessel Counterweights for fishing and offshore processing vessels. Made from HT200 cast iron with V-process casting technology, these ballast solutions help control weight distribution, reduce vessel rolling risks, and improve operational stability. Custom designs match vessel structure and installation requirements.
Fishing Boat Counterweights

Fishing Boat Counterweights

Shengjian Fanrong — China-based manufacturer of Fishing Boat Counterweights in olive, teardrop, conical, and wing profiles. V-process cast iron delivers low drag, fast sinking, and superior saltwater corrosion resistance.Send your drawings for a fast quote.
Quarrying Vessel Counterweights

Quarrying Vessel Counterweights

Shengjian Fanrong manufactures heavy-section cast iron Quarrying Vessel Counterweights for dredging vessels, aggregate carriers, and marine engineering equipment. Unlike standard ballast blocks, these components are produced as large industrial castings with controlled casting integrity, dimensional accuracy, and marine protection performance for continuous offshore quarrying operations.
Icebreaker Counterweight

Icebreaker Counterweight

Shengjian Fanrong supplies ISO-certified, patent-backed high-density cast iron icebreaker counterweights. Modular, corrosion-resistant and fully customizable marine ballast optimizes icebreaker stability and safety for polar marine operations, supporting global OEM orders with 30-day fast delivery.
Crane Vessel Counterweight

Crane Vessel Counterweight

Shengjian Fanrong Crane Vessel Counterweights are engineered for floating cranes, offshore lifting vessels, and marine construction platforms where load variation and vessel movement directly affect lifting safety. Manufactured from heavy-duty cast iron, each counterweight is designed according to equipment requirements to improve stability, optimize center of gravity control, and support long-term offshore operation.
As a reliable Marine Ballast Weights manufacturer and supplier in China, we have our own factory. If you want to buy high-quality Counterweight products, please contact us.
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