Plates

Portland Bolt manufactures plates from a range of carbon and alloy steels including:

• ASTM A36 (standard structural steel) 
• ASTM A572 Grade 50 (high-strength, low-alloy steel) 
• Stainless steel for corrosion-resistant or architectural applications

Plate fabrication capabilities include cutting and punching flat bar up to ¾″ thick, and plasma cutting up to 1½″ thick for heavier applications.

Portland Bolt produces plates in many configurations to meet project-specific needs, including:

• Square plates (standard for anchor bolt templates or washers)
• Rectangular plates (commonly used as splice or bearing plates)
• Round or ring plates (for pipe assemblies or decorative anchor systems)
• Plates with round or oval holes for bolt connections
• Internally threaded plates for assemblies requiring embedded connections

Custom shapes, hole patterns, and sizes can be fabricated to match engineered drawings.

Anchor plates are welded to the embedded ends of anchor rods or bolts to provide pullout resistance in concrete foundations. The plate transfers load through the concrete and prevents the rod from lifting or rotating under tension.

Anchor plates are commonly used in structural columns, bridges, marine foundations, and light pole installations. Portland Bolt’s certified welders can attach plates directly to rods, nuts, or other components for ready-to-install assemblies.

All plate fabrication is performed in-house using advanced machinery for integrity and efficiency, including:

• Messer high-performance plasma cutting for accurate edges and custom shapes up to 1½″ thick
• 120- and 150-ton ironworkers for flat bar shearing and punching up to ¾″ thick
• On-site certified welding for attaching plates to anchor rods, nuts, or other assemblies

These processes ensure consistent dimensional accuracy and high-quality finishes across every order.

Yes. Portland Bolt regularly fabricates custom plate designs with unique hole configurations, slot patterns, or dimensions.

Capabilities include:

• Round and oval holes 
• Internally threaded plates 
• Angle assemblies with multiple holes 
• Custom shapes and large templates for structural and marine applications

These custom components are built to your drawings, ensuring compatibility with complex anchor or tie rod systems.

Portland Bolt provides several finishing options to meet corrosion and appearance requirements:

• Plain steel – standard mill finish for interior or temporary applications 
• Hot-dip galvanized – performed in-house to ASTM F2329 standards for corrosion protection 
• Stainless steel – Type 304 or 316 for long-term durability in marine or architectural environments

On-site galvanizing allows for fast turnaround times and ensures coating integrity on both flat and welded surfaces.

By performing hot-dip galvanizing onsite, Portland Bolt ensures:

• Reduced lead times compared to outsourced finishing 
• Uniform coating thickness and consistent quality control 
• Improved adherence to ASTM galvanizing specifications 
• Protection against corrosion for plates used in outdoor, marine, or industrial environments

This integrated process allows Portland Bolt to deliver fabricated and galvanized assemblies faster than industry averages.

Yes. Portland Bolt’s certified welders can weld plates to:

• Anchor rods or bolts for concrete embedment 
• Nuts or coupling components for load-bearing joints 
• Other plates as part of multi-layer assemblies

These welded assemblies are commonly used in tie rod systems, foundation connections, and marine anchoring structures where high-strength welds and accurate positioning are critical.

Portland Bolt can punch and shear flat bar up to ¾″ thick and plasma cut plates up to 1½″ thick. Plate dimensions can vary from small washers to large anchor templates, depending on project requirements.

For oversized or heavy-gauge plates, fabrication and handling are performed using specialized equipment to maintain dimensional accuracy and edge integrity.

Yes. The Plate Weight Calculator on Portland Bolt’s website allows users to quickly estimate the total weight of carbon steel plates, whether round, square, or with holes.

By entering dimensions such as thickness, width, length, hole diameter, and quantity, the tool automatically calculates weight per plate and total shipment weight to assist with design, quoting, and freight planning.

Try the Plate Weight Calculator

To ensure accurate pricing and fabrication, please include the following details in your RFQ:

• Plate dimensions (length, width, and thickness)
  
• Hole size, pattern, or slot configuration (if applicable)
  
• Material grade (A36, A572 Grade 50, stainless, etc.)
  
• Quantity required
  
• Finish (plain, galvanized, or stainless)
  
• Welding or assembly requirements, if plates will be attached to anchor rods or hardware

Providing this information upfront helps Portland Bolt’s estimators deliver an accurate, timely quote.

Portland Bolt supplies custom-fabricated plates for diverse industries, including:

• Construction and infrastructure (anchor templates, splice plates) 
• Marine and coastal structures (galvanized anchor plates and brackets) 
• Heavy timber and seismic retrofits (bearing and tie plates) 
• Transportation and utilities (bridge and pole base connections)

Each plate is produced to meet strict dimensional and material specifications, ensuring consistent performance in demanding environments.