Compound Steel Grating


About product

Compound steel grating is commonly used in marine applications due to its durability and ability to withstand harsh conditions. The sealed surface of the pattern plate helps to prevent the accumulation of water, debris, and other substances, making it suitable for marine environments.

In marine applications, this type of steel bar grating is often used for ship decks, offshore platforms, docks, and other marine structures. The composite surface provides a stable and slip-resistant platform for workers and equipment, ensuring safety in marine operations.

  • Welded Compound Steel Bar Grating
  • Press-Locked Compound Steel Bar Grating

Additional information

pattern plate thick


steel grid plate type

FG323/40/100, FG323/30/100, FG253/60/100

surface treatment

black, self colour, hot dip galvanized, painted, spray coating

Product Detail

Steel Grating For Sale – Marine Bar Grating

The degree of pattern plate composition in this steel bar grating refers to the combination of different types of steel plates used to create the grating structure. The commonly used combinations include:

  • Bottom Layer: For the bottom layer, steel grid plates such as FG323/40/100, FG323/30/100, or FG253/60/100 are commonly utilized. These grid plates provide structural support and strength to the grating. The numbers in the combination represent the specific dimensions and spacing of the steel bars in the grid plate.
  • Decorative Pattern Plate: On top of the bottom layer, a decorative pattern plate is added to enhance the visual appeal of the grating. The standard thickness for the pattern plate is 3 mm. However, based on customer requirements, the thickness can be customized to 4 mm, 5 mm, or 6 mm for specific applications.

Two Types Of Compound Steel Grating

There are two common types of compound steel bar grating based on the composition of the sealed surface and the transverse steel grid plate:

  • Welded Compound Steel Bar Grating: In this type, the sealed surface of the pattern plate is welded to the transverse steel grid plate. The pattern plate and grid plate are joined together through welding, creating a strong and rigid composite grating. This steel grating offers excellent load-bearing capacity and durability.
  • Press-Locked Compound Steel Bar Grating: The pattern plate-sealed surface of the steel bar grating is pressed and locked into the transverse steel grid plate. The pattern plate and grid plate are interlocked using high-pressure processing, eliminating the need for welding. Press-locked compound grating provides a smooth and aesthetically pleasing surface, while still maintaining good strength and stability.

The Composite Mesh Of Steel Bar Grating

In the composite mesh of steel bar grating, there are two common configurations:

  • Front or Bottom Welded Steel Mesh: That means a welded steel mesh is attached to the front or bottom of the steel grid plate. This mesh board serves as a protective layer, preventing small pieces from falling through the gaps of the steel bar grating. It finds applications in environments such as granaries, restaurants, and warehouses, where it helps to prevent the entry of small animals like mice.

The welded steel mesh provides additional safety and containment, making the grating suitable for situations where finer materials or small objects need to be contained within the grating structure.

  • Steel Grid Plate with Selectable Steel Mesh: In this configuration, the steel grid plate itself serves as the base plate, and different types of steel mesh can be selected and added to the grating as needed. This provides flexibility in choosing the appropriate steel mesh based on specific requirements such as load-bearing capacity, resistance to corrosion, or aesthetic considerations.

Compound Steel Grating Installation Method

The installation of compound steel grating can be carried out using the following methods:

  • Welding Method: The steel grid or step plate is welded directly onto the supporting steel structure. After welding, the welding places should be brushed with two coats of zinc-rich powder paint. This method provides a strong and permanent connection between the grating and the structure.
  • Installation Clip Method: Special installation clips designed for steel grid plates can be used for installation. These clips allow for easy installation and disassembly without damaging the galvanized layer of the grating. Each set of installation clips typically includes an upper clip, a lower clip, an M8 round-head bolt, and a nut. This method offers flexibility in installation and maintenance.
  • Optional Fastening Methods: Depending on the specific requirements, alternative fastening methods such as stainless steel installation clips or bolt connections can be provided.
  • Installation Clearance: The recommended installation clearance for the steel grating is generally 100mm. This clearance allows for proper installation and ensures sufficient space for drainage and debris removal.
  • Secure and Reliable Installation: It is crucial to ensure that the installation of the steel grating is solid and reliable. Regular inspections should be conducted to check for loose installation clips and to prevent them from coming off. If the grating is subject to vibration, it is advisable to weld it or add rubber pads for additional stability.

Compound Steel Grating Mark

compound steel grating




Know Who We Are

About our company

Zava Marine Corporation is a leading supplier of marine parts and components. With a strong focus on quality and customer satisfaction, we specialize in providing a comprehensive range of high-quality marine equipment and accessories. Our products include deck equipment, ship accessories, and various other essential components needed for smooth maritime operations.

With a global presence, we serve a diverse customer base, including shipbuilders, shipowners, offshore operators, and marine equipment distributors. We are committed to providing exceptional service and tailored solutions to meet our customers’ unique needs.


Zava Marine offers a comprehensive range of certifications for marine parts in accordance with international standards and regulations. These certifications include those provided by renowned marine classification societies such as Lloyd’s Register (LR), Bureau Veritas (BV), China Classification Society (CCS), Registro Italiano Navale (RINA), American Bureau of Shipping (ABS), Nippon Kaiji Kyokai (NK), and Det Norske Veritas – Germanischer Lloyd (DNV-GL). By collaborating with these esteemed societies, Zava Marine ensures that our certified marine parts meet the highest standards of safety, quality, and performance, instilling confidence in our reliability and compliance within the maritime industry.

The warranty provided by Zava Marine covers defects in materials and workmanship for a period of two years from the date of purchase. During this warranty period, if any marine parts purchased from Zava Marine exhibit issues or failures resulting from manufacturing defects or faulty materials, Zava Marine will take responsibility for repair or replacement of the affected parts. 

Zava Marine has recently opened new molds for European and North American clients, utilizing materials such as metal, ABS, PVC, and more. These successful mold opening projects allow us to provide customized marine parts and components that meet the specific requirements of our clients in these regions.

Typically, Zava Marine can ship samples within 7 days once the product drawing has been mutually confirmed by both parties. This efficient process ensures that customers can receive samples promptly, allowing them to assess the quality and suitability of the products.

Zava Marine frequently utilizes a wide range of materials in our projects. These materials include aluminum, stainless steel, carbon steel, copper, plastics, titanium, and PEEK (Polyether Ether Ketone). Each material offers unique properties and characteristics suitable for various marine applications. 

Yes, we provide customization services for marine parts. We understand that every project and application may have unique requirements, and we are committed to delivering tailored solutions. By collaborating closely with our clients, we can adapt our products to specific specifications, ensuring optimal fit, performance, and compatibility. Whether it’s modifying existing designs or creating entirely new parts, our customization services cater to the diverse needs of the maritime industry.

Absolutely! We offer product design and development services to support our clients’ needs. Our experienced team of engineers and designers can collaborate with clients from concept development to final product realization. By leveraging our expertise in marine engineering and design, we can provide valuable insights and innovative solutions. Whether it’s optimizing existing designs or creating entirely new products, we are equipped to assist clients in bringing their ideas to life efficiently and effectively.

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