Steel Base Plates

Base plates are thick sheets of steel with four equal straight sides cut with a CNC plasma cutter or Fiber-Optic laser.  They are used in construction for structural support and foundation.


Certified to ASTM A-36, ASTM A-572-50, A-1011, and A-786.


Truss plates, connector plates, truss anchors.


Welding, beveling, cutting, and machining.

Available Stock Sizes

Sizes varies.

Custom Specifications

Additional Items

Price response time 4-6 hours

Steel Products

Click through the library and request a quick quote for your custom order

Introduction to Steel Base Plates

At California Steel Services, we’re committed to providing top-tier steel products to meet all your construction needs. Our steel base plates are a prime example of our dedication to quality and precision. These thick, small sheets of steel, with four equal straight sides, are expertly cut using CNC plasma cutters or Fiber-Optic lasers. They play a crucial role in construction, providing structural support and a solid foundation.

Why Choose Steel Base Plates?

Base plates are essential in construction because they can support structures and ensure stability. With their robust design and precise cuts, they offer unmatched durability and reliability, making them an ultimate choice for many projects.

Our Solutions

At California Steel Services, we specialize in high-quality steel base plates. We offer several solutions, including both standard and customized options. Whether you need a square steel base plate or a structural steel base plate, we ensure that each product is crafted with the highest standards of durability and precision.

Properties of Our Steel

Our plates are manufactured from premium materials and certified to meet industry standards, ensuring superior performance and longevity. The materials we use include:

  • ASTM A-36 : Known for its excellent strength and versatility.
  • ASTM A-572-50 : Offers enhanced strength and resistance to stress.
  • ASTM A-1011 : Provides superior formability and durability.
  • ASTM A-786 : Ensures robust performance and reliability.


Base plates are versatile and have applications in various construction and engineering projects. Some typical applications include:

  • Structural Support : They provide a stable foundation for columns and other structural elements.
  • Foundations : They are crucial in distributing the load of a structure to the foundation, ensuring stability and strength.
  • Anchoring Structural Elements : They are used to anchor beams, columns, and other structural elements.

Workability of Steel Base Plates

Our steel base plates are designed for excellent workability, allowing easy welding, beveling, cutting, and machining. We offer various machining methods to create holes, slots, or specific shapes.

Available Stock Sizes

We offer a wide range of stock sizes to meet your project needs. Our steel base plates are available in sizes ranging from 9 to 16 inches, with 1/2-inch increments. Our customers appreciate the diverse dimensions available, ensuring they can find the perfect fit for their requirements.

Why Choose California Steel Services?

California Steel Services is a leading supplier of steel plates in the Western United States. Operating from a 7-acre facility with a 78,000 sq. ft. warehouse and a newly added 87,493 sq. ft. warehouse, we are equipped with state-of-the-art equipment to meet the growing demand for our services. Our commitment to quality, precision, and customer satisfaction makes us the go-to choice for all your steel product needs.

Current Specials and Offerings

Call (800) 323-7227 to learn about our promotions and special offerings.

Contact Us for Your Steel Base Plate Needs

Fill out the “Request Quote” form below. Our sales team will send a customized quote for your review within 4-6 hours the same day.


What are base plates used for?

They are used in construction to provide structural support and a solid foundation. They help distribute a structure’s load to the foundation, ensuring stability and strength.

What materials are your steel base plates made from?

Our steel base plates are manufactured from high-quality materials. They are certified to ASTM standards. Steel materials include ASTM A-36, ASTM A-572-50, ASTM A-1011, and ASTM A-786.

Can you customize the plates to specific project requirements?

California Steel Services offers customizable steel plates to meet your project requirements.

What are the standard sizes available for steel base plates?

Our base plates come in different sizes. We offer stock sizes ranging from 9 to 16 inches, with 1/2-inch increments. If you have specific size requirements, we can create custom dimensions to meet your needs.

What are the benefits of using ASTM certified steel base plates?

Using ASTM certified steel base plates ensures the materials meet stringent quality and performance standards.

How can I get a quote for a custom order?

Fill out the “Request Quote” form with your project specifications on this page. Our customer support team will call you and provide a customized quote within 4-6 hours. Our team will work with you to meet all project specifications.

Ready to get started? Let's work together.


About Us

California Steel Services was established in 1983. Over the years, the company has developed a great reputation and recognition within the steel industry for its services and product qualities. California Steel Services is operating from a 6.5-acre facility entailing a 85,000 sq. ft warehouse with state of the art equipment.


California Steel Services
1212 S Mountain View Ave
San Bernardino, CA 92408

P:  (800) 323-7227
F:  (909) 796-8888