MANUFACTURING Quality and Reliability

Dover Marine Manufacturing & Supply Co., Inc.: A Legacy of Quality and Reliability

Since its founding in 1957, Dover Marine Manufacturing & Supply Co., Inc. has been a trusted name in the marine industry. With a relentless commitment to quality and innovation, Dover Marine has cemented its legacy as a leading manufacturer of industrial marine hardware and equipment. By proudly manufacturing exclusively in the United States, the company ensures precision, durability, and adherence to the highest industry standards.

From ocean-going vessels to military ships, Dover Marine's products are vital to marine operations, trusted worldwide by professionals in the chemical, petroleum, and offshore industries. Let's explore what sets Dover Marine apart and take a closer look at their range of marine hardware solutions.

Made in the USA Since 1957
For more than 65 years, Dover Marine has upheld its mission of delivering quality American craftsmanship. Unlike many competitors who outsource manufacturing overseas, Dover Marine’s products are engineered and produced domestically to ensure superior standards.

Why “Made in the USA” Matters
Manufacturing in the United States offers a number of benefits, not only to the marine industry but to its partners and customers as well.

  • Quality Assurance: Each product undergoes rigorous quality checks to meet industry and safety requirements.
  • Consistent Supply Chain: Customers benefit from faster delivery times and a secure supply chain unaffected by global disruptions.
  • Economic Impact: Supporting domestic manufacturing strengthens local economies and creates skilled jobs within the United States.

Dover Marine’s emphasis on American manufacturing exemplifies their dedication to excellence and reliability, keeping businesses running efficiently across the globe.

A Complete Range of Industrial Marine Hardware
Dover Marine specializes in producing a complete line of industrial marine hardware, hatches, and equipment designed to meet the demanding needs of marine professionals worldwide. Their versatile products are trusted in diverse applications across the ocean-going, inland waterway, military, chemical, and offshore sectors.

Flagship Products That Define Marine Durability

  1. Dog Bolts

Dog bolts are an essential component in marine applications, serving as rugged fasteners for watertight doors, hatches, and other critical equipment. Dover Marine’s dog bolts are manufactured with resilience in mind, offering enhanced rust resistance and durability under extreme conditions.
These robust fasteners ensure that watertight integrity is maintained no matter the environmental pressures, making them indispensable for safety and operational efficiency.

  1. Scupper Plugs

Preventing water intrusion is key to any safe marine operation. Dover Marine’s scupper plugs are crafted with precision, providing airtight seals on vessel drains. Built to withstand harsh weather, chemical exposure, and saltwater, these plugs deliver unmatched reliability.
Whether you're securing a military vessel or managing an offshore rig, Dover Marine ensures protection against potential flooding and water damage.

  1. Door Dog Handles

When it comes to marine-grade hardware, door dog handles by Dover Marine are designed for both ease of use and robust performance. Ideal for watertight doors and hatch covers, these handles feature ergonomic designs for effortless operation while maintaining the highest safety standards.
Built to withstand years of usage in the toughest conditions, Dover’s door dog handles are a vital part of maintaining onboard safety and access.

Industries Served
What truly sets Dover Marine apart is its ability to serve a broad spectrum of industries with diverse needs. Some primary industries that rely on Dover Marine hardware include:

  • Ocean-Going Vessels: From cargo ships to fishing vessels, Dover Marine’s products support vessels traveling through the harshest marine environments.
  • Military Vessels: The precision and durability of Dover Marine hardware ensure safety and functionality for naval operations.
  • Chemical & Petroleum Industry: When transporting hazardous materials, reliability is non-negotiable. Dover Marine supplies safe, high-performing equipment for chemical and petroleum shipments.
  • Offshore Operations: Offshore rigs and platforms benefit from Dover Marine’s heavy-duty hardware, built to perform in high-pressure, corrosive environments.

Why Professionals Trust Dover Marine
Marine industry professionals and supply chain managers often face challenges that demand uncompromising quality and reliability in their equipment. Here’s why they continue to trust Dover Marine Manufacturing & Supply Co., Inc.:

  1. Expert Craftsmanship

With decades of experience, Dover Marine employs skilled professionals who understand the complexities of the marine industry better than anyone. Their expertise ensures perfect execution from design to delivery, no matter the scale of the order.

  1. Custom Solutions

Need a specialized product tailored to unique specifications? Dover Marine collaborates closely with customers to craft customized hardware solutions that perfectly match their needs.

  1. Global Reach, Local Service

While their production remains proudly U.S.-based, Dover Marine supplies products to clients worldwide. With a secure and responsive supply chain, the company continues to support businesses navigating global operations.

  1. Focus on Sustainability

By limiting excessive outsourcing and prioritizing high-quality, long-lasting materials, Dover Marine is committed to reducing waste and fostering environmentally conscious practices.

Join A Legacy of Excellence
For over six decades, Dover Marine Manufacturing & Supply Co., Inc. has stood as a beacon of American manufacturing excellence. Their commitment to providing reliable, durable marine hardware has made them an industry leader, from local waterways to global enterprises.
Are you ready to experience the precision, reliability, and dedication that Dover Marine delivers? Explore their extensive catalog or contact their team to discuss how they can meet your hardware needs.

Together, Dover Marine and its partners ensure that vessels and operations worldwide—whether inland or at sea—are equipped for success.

FOR OVER 65 YEARS OF SERVICE

Our comprehensive standard product line is available from stock and ready for same-day shipment. 

We also offer customized fabrication of other non-stock products with attention to rapid turn around.

Dover Marine Mfg. & Supply Co., Inc.
2221 5th Ave. Factory #8
Ronkonkoma, NY 11779

Telephone: (631) 667-4300
Telephone: (631) 667-4301
Fax: (631) 667-4302


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