Double Bitt Bollard Heavy Duty Double Head Cast Steel/Cast Iron Bollard for Marine Docking

Material and Manufacturing:

In the field of ship mooring, the quality and performance of bollards are directly related to the safety and efficiency of port operations. Today, we are proud to introduce our elaborately crafted flared cast-steel bollards, which have remarkable advantages in materials and manufacturing processes.

Material Advantages

1. Core material: The main materials are high-quality cast steel ZG230-450 (heavy-duty main model, tensile strength ≥ 450 MPa, yield strength ≥ 230 MPa) and high-strength ductile iron QT600-3 (heavy-duty economical model). Customized stainless steel 316L material is also available (suitable for high-corrosion chemical docks / special maritime scenarios). The overall structure has no joint gaps, and it has strong resistance to deformation and fracture, meeting the long-term heavy mooring mechanical requirements.
Precision processing: Sand mold / lost foam precision casting → Overall heat treatment to eliminate internal stress → CNC machining for the column body / base (surface roughness ≤ Ra12.5) → Multiple anti-corrosion treatments → 100% static load / dynamic load pressure test inspection → Ship classification society third-party inspection → Factory full inspection.
Anti-corrosion treatment:
Standard model: Hot-dip galvanizing (zinc layer thickness ≥ 85 μm, salt spray test ≥ 1200 hours), effectively resisting high-salt corrosion in the ocean;
Strengthened model: Hot-dip galvanizing + epoxy zinc-rich primer (80 μm) + polyurethane topcoat (60 μm), double-layer anti-corrosion, suitable for high-corrosion sea areas / chemical docks;
Customized model: Stainless steel natural brushed finish / mirror polished finish, no need for later anti-corrosion maintenance.

Core performance advantage:

Core performance features:
1. Strong load-bearing capacity and excellent tensile strength: The main material has high strength and has been professionally designed for mechanical properties. It can withstand 50kN to 5000kN of cable tension, meeting the mooring requirements for everything from small yachts to large container ships and ocean-going cargo ships. The force is distributed evenly and it is not prone to deformation. 
2. Corrosion-resistant and wear-resistant, with wide environmental adaptability: Surface anti-corrosion treatment (such as hot-dip galvanizing, powder coating, etc.) can effectively resist seawater, salt fog, acid and alkali corrosion, resist ultraviolet rays and aging, and is suitable for various scenarios such as coastal ports, inland river docks, and marine platforms. It is unlikely to rust or be damaged when used outdoors for a long time. 
3. Stable structure, firm installation: The base is closely connected to the foundation, and the integrated column design has no joint gaps. It has strong anti-overturning and anti-loosening capabilities, and can withstand the impact forces brought by wind and water, ensuring the stability of the vessel during berthing. 
4. Convenient operation and strong adaptability: The top cable-tying structure is well-designed, making it easy to wind and fix the cables without slipping off. It comes in various specifications, which can be adapted to different widths of docks and tonnages of ships. It also supports customization of special sizes and shapes to meet individual mooring requirements. 
5. Long-lasting and low maintenance cost: Using high-quality materials combined with professional anti-corrosion treatment, the service life can reach 15-30 years. Daily maintenance is not required; only regular checks on bolt tightness and surface anti-corrosion layer are needed, thereby reducing the long-term operation and maintenance costs. 
6. Safe and reliable, with excellent protection: The surface is smooth without sharp edges or corners, preventing potential safety hazards caused by wear and tear of the cables; some specifications can be customized with anti-collision coatings and reflective markings to enhance the visibility during nighttime operations and ensure work safety.

Technical Parameters:

Application Scenarios:

I. Port and Wharf Categories (Heavy-duty Commercial, Core Adapted for Large Load, Corrosion-resistant Ship Columns)
This is the most common application scenario for ship mooring columns, suitable for the mooring of various commercial ports' vessels, capable of withstanding the mooring tension of万吨-class ships, resisting marine salt fog and wind wave impacts. Heavy-duty ship columns made of cast steel / ductile iron and hot-dip galvanized for corrosion protection are mostly used.
Oriental commercial ports: Container terminals, bulk cargo terminals, oil and chemical terminals, LNG terminals, cruise mother ports
Inland / coastal ports: Inland shipping terminals, river-sea intermodal transfer terminals, fishing ports, freight ferry terminals
Special operation terminals: Shipyard repair terminals, ship replenishment terminals, temporary mooring points in port operation areas
II. Ship Accessories Categories (Shipboard Deck Type, Adapted for Lightweight, Anti-Vibration Ship Columns)
Used for the deck mooring of various ships, suitable for the vibration and shock during ship navigation, more compact in size, flexible in installation method, mostly using bolt-fixed type ship columns, suitable for ship docking at terminals, temporary mooring at anchorages, and ship-to-ship docking positioning.
Large ships: Deck mooring areas of ocean-going cargo ships, cruise ships, oil tankers, LNG ships, roll-on/roll-off ships
Medium-sized ships: Deck mooring points of inland cargo ships, ferries, engineering ships, fishing vessels
Small ships: Simple installation positions of speedboats, workboats, patrol boats
III. Leisure and Cultural Tourism Categories (Lightweight Leisure, Adapted for Beautiful, Corrosion-resistant Ship Columns)
Mainly for leisure docking, with low load requirements, also considering aesthetics and environmental adaptability. Mostly made of 304/316 stainless steel, polished surface, suitable for the overall style of leisure and cultural tourism scenarios.
Yacht terminals: Coastal / inland lake yacht clubs, private yacht terminals, yacht docking berths
Cultural tourism terminals: Tourist boat terminals, waterborne sightseeing boat terminals, waterborne berths at popular打卡spots
Leisure fishing ports: Leisure fishing terminals, civilian small fishing vessels' docking points, waterfront leisure areas' mooring points
IV. Industrial Engineering Categories (Special Industrial Requirements, Adapted for Customized, High Protection Ship Columns)
Adapted to special mooring requirements in industrial operations and offshore engineering, some scenarios require customized ship columns that can withstand extreme environments and special loads, such as storm-resistant, explosion-proof types. Some may need to be equipped with pre-buried bases to enhance stability.
Offshore engineering platforms: Offshore wind power platforms, offshore scientific research platforms, offshore drilling platforms' mooring points
Industrial operation areas: Port terminals in coastal industrial zones, power plant water intake terminals, dedicated terminals in chemical industrial parks
Special engineering scenarios: Temporary mooring points for bridge construction during construction, waterborne engineering vessel operation positioning points, flood emergency mooring points

Support and Services:

Pre-Sales Services • Technical Consultation: Provide product selection, load calculation, and installation space and foundation requirements.

• Drawing Confirmation: Provide detailed product dimensional drawings and installation diagrams, and confirm with the designer or customer.

• Plan Development: Recommend appropriate materials and surface treatment solutions based on the operating environment (e.g., seaports, inland waterways, chemical plants).

Post-Sales Services • Production Progress Reporting: For customized products, provide regular feedback on production progress.

• Quality Inspection and Certification: Provide raw material certification, heat treatment reports, non-destructive testing reports (if applicable), and classification society certifications (e.g., CCS, ABS, DNV, etc.).

• Proper Packaging: Ensure products are well protected during transportation to prevent rust and damage.

After-Sales Services • Installation Guidance: Provide detailed installation instructions and, for critical projects, dispatch technicians for on-site guidance.

• Warranty: Typically, a 12- to 24-month warranty is provided, commencing from the date of project acceptance.

• Technical Support: Provide ongoing technical consultation and support throughout the product's lifespan. • Problem response and handling: During the warranty period, free repair or replacement will be provided for defects caused by materials or manufacturing processes.

Any question please let us know ,our JinCheng maritime will provide you the best service with 7*24 hours ~