Ever spent hours searching for the right structural steel plate supplier, only to end up overwhelmed by options and worried about quality or delivery delays? You’re not alone—choosing the perfect manufacturer can make or break your next project’s success. Knowing which factories consistently deliver top-grade steel, reliable service, and competitive prices is crucial. After all, working with the best means less hassle, fewer risks, and peace of mind. Ready to discover the standout suppliers?

Dive into our comparison and find your perfect match!

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Structural Steel Plates | North Shore Steel – nssco.com

Product Details:
The company offers a range of structural steel plates designed for use in construction, bridges, machinery, shipbuilding, and other heavy-duty structural applications.

Technical Parameters:
– Available in various grades such as ASTM A36, A572, A588, A709, A516, and
– Plate thickness ranges from 3/16″ to 24″.
– Width available up to 120 inches, with custom lengths upon request.
– Meets standards including ASTM, ASME, and EN specifications.

Application Scenarios:
– Bridge construction
– Building structures
– Machinery fabrication
– Shipbuilding

Pros:
– Wide variety of grades and specifications to suit diverse project needs.
– High mechanical strength and durability.
– Meets rigorous industry standards for safety and performance.
– Custom cutting and finishing options available.

Cons:
– Large and heavy plates may involve higher shipping and handling costs.
– Lead times may vary based on custom specifications and order size.

Steel Plate Supplier, Distributor & Manufacturer | Leeco Steel, LLC

Product Details:
Leeco Steel, LLC supplies, distributes, and manufactures a wide range of steel plate products, including carbon and high strength low alloy (HSLA) structural steel plate, abrasion resistant steel plate, heavy steel plate, alloy quenched & tempered steel plate, offshore and marine steel plate, road plate, Caterpillar spec steel plate, and EN standard steel plate. Specific grades and specifications such as A36, A572, A514, AR400, AR500, ABS grades, and more are available.

Technical Parameters:
– Various grades and specifications including A36, A572 (42, 50, 55, 60, 65),
– Steel plates offered in different strengths: medium, high strength, abrasion
– Yield strength parameters reaching 130 Ksi (890 MPa) and 140 Ksi (960 MPa) for
– Product options include both US ASTM/ASME, Canadian CSA, and European EN

Application Scenarios:
– Structural construction and engineering applications
– Manufacture of heavy equipment and machinery
– Roadway and temporary road plate use
– Shipbuilding and offshore/marine structures

Pros:
– Wide selection of steel plate grades and specifications
– Products comply with major U.S., Canadian, and European standards
– Offerings include both structural and specialty/abrasion-resistant plates

Cons:
– Technical details such as specific plate thickness, dimensions, or tolerances
– No direct mention of value-added services (i.e., cutting, fabrication,

Steel Plate & Sheet – Metals USA

Product Details:
Metals USA offers a wide range of steel plate and sheet products, including structural shapes (angle, beam, channel), carbon steel bars, hot dipped galvanized steel, structural steel pipe, rectangular and square tubing, rebar, steel composite decking, metal grating, and expanded metal. A diverse selection of steel grades is also offered, such as A36, A529-50, A572-50, A709-50, A588, A500 B/C, A847, A992, AH36, DH36, EH36, AH32, DH32, ABSA, military grade, A786, AR400, AR500, A514, A516-60, A516-70, HY100, HY80, HSLA80, and HSLA100.

Technical Parameters:
– Multiple steel grades including structural, abrasion resistant, marine, and
– Product forms offered: plates, sheets, shapes, bars, pipes, tubing, decking,
– Availability of hot dipped galvanized and composite options

Application Scenarios:
– Construction of buildings and infrastructure
– Manufacturing of industrial machinery and heavy equipment
– Shipbuilding and marine applications
– Reinforcement in concrete structures (rebar, decking)

Pros:
– Extensive range of steel product types and grades
– Suitable for diverse industrial and construction applications
– Availability of certified quality and specialty grades

ASTM Structural Plate Supplier – Universal Steel America

Product Details:
Universal Steel America supplies ASTM quality steel plates including HSLA (High Strength Low Alloy) alloy steel plates in grades such as A36, A572, A588, A633, A514, and A709, available as standard stock or custom mill orders, suitable for structural fabrication, construction, machinery, and general industrial applications.

Technical Parameters:
– ASTM structural grades supplied: A36, A572, A588, A633, A514, A709
– Meets high strength low alloy (HSLA) requirements
– Available in standard stock sizes and custom mill orders
– Third-party testing and alternative grades available upon request

Application Scenarios:
– Structural fabrication projects
– Construction industry uses (e.g. bridges, buildings)
– Machinery manufacturing
– General industrial applications requiring HSLA steel plate

Pros:
– Wide range of ASTM certified structural plates available from stock
– Ability to fulfill custom specifications and alternative grades via mill orders
– Third-party testing for compliance and quality assurance
– Responsive quoting and catered customer service

Cons:
– Detailed material properties (mechanical, chemical) for each grade not
– No direct mention of plate size range or thickness capabilities

Structural Steel Products – Steel Plate & Beam Supplier | Triple-S …

Product Details:
Triple-S Steel Holdings, Inc. supplies structural steel products, including steel plates, beams, angles, bars, channels, pipes, sheets, tubes, steel decking, expanded metal, grating, fabrication accessories, and metal building components. They offer a wide range of materials such as carbon steel, alloy steel, stainless steel, aluminum, copper, brass, and copper nickel.

Technical Parameters:
– Product forms: angle, bar, beam, channel, pipe, plate, sheet, tube, composite
– Materials: carbon steel, alloy steel, stainless steel, aluminum, copper, brass,
– Fabrication accessories and building component options included.

Application Scenarios:
– Building construction and infrastructure projects.
– Industrial fabrication and manufacturing.
– Metal building components for commercial or industrial use.
– Steel decking and flooring for large structural projects.

Pros:
– Comprehensive range of structural steel materials and product forms.
– Diverse material offerings to suit various industrial and construction needs.
– Availability of value-added services, including exports and fabrication

Cons:
– Lack of detailed technical specifications (sizes, grades, standards) on the
– Requires contacting the company for quotes or specific technical details.

Structural Steel Plates – Intsel Steel West

Product Details:
Offers a wide selection of steel plate products including standard plates and universal mill plates in various thicknesses and widths. Plates are categorized by type, exact dimensions, and weight per foot.

Technical Parameters:
– Thicknesses ranging from 3/16 inch to 12 inches.
– Widths from 9 inches up to 120 inches.
– Weight per foot provided for each plate size, ranging from 7.66 lb/ft to 490.08
– Types include Standard Plates and Universal Mill Plates.

Application Scenarios:
– Heavy construction and building infrastructure.
– Industrial equipment manufacturing.
– Projects requiring precise steel plate specifications for fabrication or

Pros:
– Extensive range of thicknesses and sizes allows for tailored solutions.
– Clear weight specifications aid in project planning and cost estimation.
– Availability of both standard and universal mill plate types.

Cons:
– No information provided on custom cutting or fabrication services.
– Does not specify steel grades or material specifications.
– Limited details on coating, corrosion resistance, or surface finish options.

Structural Steel Plate – Kloeckner Metals Corporation

Product Details:
Kloeckner Metals supplies a wide range of structural steel plate products in various grades and thicknesses, routinely stocked in standard widths and lengths. Grades include A36, A572 (multiple grades), A588, A871-65, A709 (multiple grades), A656 (multiple grades), 1045, and 33 Max, serving diverse industries with North American distribution.

Technical Parameters:
– Stocked plate thickness ranges from 3/16″ up to 8″ depending on grade
– Standard width range: 48″ to 120″, standard length range: 96″ to 650″ depending
– Grades follow ASTM standards: A36, A572 (42,50,60,65), A588 (A,B,K), A871-65,
– Carbon content up to 2.1% by weight for structural plate

Application Scenarios:
– Construction (bridges, buildings, general fabrication)
– Manufacturing of axles, gears, shafts, and other machine parts
– Production of lighting poles, transmission poles, and signposts
– Heavy equipment (crane booms, truck frames, construction equipment)

Pros:
– Wide range of grades and thicknesses available to meet diverse specifications
– High strength and durability suitable for demanding structural applications
– Many grades feature improved corrosion resistance and weldability
– Routinely stocked at over 40+ North American facilities, enabling quick supply

Cons:
– Specific mechanical or physical properties not guaranteed in grades like 33 Max
– Some advanced grades require inquiry for size availability or may be limited in

ASTM Steel Plate – ASTM Steel Supplier – Steel Warehouse

Product Details:
Steel Warehouse supplies ASTM steel plates in a variety of grades, types, and finishes including hot rolled, cold rolled, low and high carbon, high strength, abrasion resistant, pressure vessel quality, military grade, and specialty steel products. Products are available as plates, sheets, coils, and specialty strip.

Technical Parameters:
– ASTM specifications and grades (including military, EN, JIS, PVQ, HSLA, AHSS,
– Product types: hot rolled, cold rolled, low carbon, high carbon, galvanized,
– Available in various forms: steel plate, steel sheet, steel coil, specialty
– Processing capabilities: slitting, blanking, cold reducing, pickling, temper

Application Scenarios:
– Aerospace components
– Automotive manufacturing
– Construction and infrastructure projects
– Agriculture equipment, heavy equipment, mining, defense, energy, transportation

Pros:
– Wide range of steel grades and types to suit multiple industry requirements
– Comprehensive in-house processing capabilities for custom orders
– Serves diverse industries with application-specific steel solutions
– Multiple locations in the US, Mexico, and Brazil for responsive supply chain

Cons:
– Technical specifications like exact thicknesses, mechanical properties, and
– Possible complexity for customers in navigating or selecting among numerous

Structural Steel Plate | Precision Grinding, Inc.

Product Details:
PGI Steel manufactures and inventories a wide variety of structural steel plates and shapes adhering to major international standards (ASTM, ANSI, AISC, AISI, ASCE, ASME, AWS) with plate sizes up to 96″ x 240″ and thicknesses up to 8″ or more. Products include grades such as A36, A572-42/50, 1020, 1045, 4140, 4340, A514-T1, A516 (pressure vessel plate), and custom/special orders including tool steels, alloy plates, wear parts, and stainless steel platens.

Technical Parameters:
– Plate sizes stocked: up to 96″ x 240″, thickness up to 8″ and larger.
– Grades include A36 (36ksi yield), A572-50 (50ksi yield), A514-T1 (100,000 psi
– Chemistries and properties meet standards such as ASTM, AISI, ASME, and
– Annealing and pre-hardened (PH) options available for select alloy steels.

Application Scenarios:
– Structural projects such as bridges, buildings, and pressure vessels (A36, A572
– Machine parts and tooling for industrial equipment (1045, 4140, 4340, tool
– Heavy equipment frames, mining and railcar components (A514-T1).
– Custom fabricated weldments, gussets, platens, wear and impact-resistant parts.

Pros:
– Single Source Solution minimizes vendor complexity and can improve cash flow;
– Wide range of steel grades, sizes, and shapes stocked, with additional special
– Adherence to industry-recognized international standards ensures material
– In-house machining, cutting, grinding, fabricating, annealing, and finishing

Cons:
– Not all plate grades and sizes may be in stock at all times; may require
– Customers needing highly specialized alloys or dimensions outside stocked range

A572 Structural Steel Plate | North Shore Steel – nssco.com

Product Details:
A572 Structural Steel Plate offered by North Shore Steel is a high-strength, low-alloy (HSLA) structural steel plate known for its excellent strength-to-weight ratio and weldability. It is suitable for a variety of structural applications and is available in different grades and thicknesses.

Technical Parameters:
– High-strength, low-alloy (HSLA) composition
– Available in multiple grades (including A572 Grade 50)
– Enhanced strength-to-weight ratio
– Good weldability

Application Scenarios:
– Construction of bridges
– Building structures
– Heavy equipment manufacturing
– General structural and fabrication projects

Pros:
– High strength and durability, making it suitable for demanding structural
– Good weldability and formability, allowing for ease of fabrication
– Offers a superior strength-to-weight ratio, enabling lighter structures without

Cons:
– May be more expensive compared to standard carbon steel plates
– Requires specialized handling and processing techniques due to higher strength

Comparison Table

Company	Product Details	Pros	Cons	Website
Structural Steel Plates	North Shore Steel – nssco.com	The company offers a range of structural steel plates designed for use in	Wide variety of grades and specifications to suit diverse project needs. High	Large and heavy plates may involve higher shipping and handling costs. Lead
Steel Plate Supplier, Distributor & Manufacturer	Leeco Steel, LLC	Leeco Steel, LLC supplies, distributes, and manufactures a wide range of steel	Wide selection of steel plate grades and specifications Products comply with	Technical details such as specific plate thickness, dimensions, or tolerances
Steel Plate & Sheet – Metals USA	Metals USA offers a wide range of steel plate and sheet products, including	Extensive range of steel product types and grades Suitable for diverse		www.metalsusa.com
ASTM Structural Plate Supplier – Universal Steel America	Universal Steel America supplies ASTM quality steel plates including HSLA (High	Wide range of ASTM certified structural plates available from stock Ability to	Detailed material properties (mechanical, chemical) for each grade not	www.universalsteelamerica.com
Structural Steel Products – Steel Plate & Beam Supplier	Triple-S …	Triple-S Steel Holdings, Inc. supplies structural steel products, including	Comprehensive range of structural steel materials and product forms. Diverse	Lack of detailed technical specifications (sizes, grades, standards) on the
Structural Steel Plates – Intsel Steel West	Offers a wide selection of steel plate products including standard plates and	Extensive range of thicknesses and sizes allows for tailored solutions. Clear	No information provided on custom cutting or fabrication services. Does not	www.intselsteelwest.com
Structural Steel Plate – Kloeckner Metals Corporation	Kloeckner Metals supplies a wide range of structural steel plate products in	Wide range of grades and thicknesses available to meet diverse specifications Hi	Specific mechanical or physical properties not guaranteed in grades like 33	www.kloecknermetals.com
ASTM Steel Plate – ASTM Steel Supplier – Steel Warehouse	Steel Warehouse supplies ASTM steel plates in a variety of grades, types, and	Wide range of steel grades and types to suit multiple industry requirements Comp	Technical specifications like exact thicknesses, mechanical properties, and	www.steelwarehouse.com
Structural Steel Plate	Precision Grinding, Inc.	PGI Steel manufactures and inventories a wide variety of structural steel	Single Source Solution minimizes vendor complexity and can improve cash flow;	Not all plate grades and sizes may be in stock at all times; may require
A572 Structural Steel Plate	North Shore Steel – nssco.com	A572 Structural Steel Plate offered by North Shore Steel is a high-strength,	High strength and durability, making it suitable for demanding structural	May be more expensive compared to standard carbon steel plates Requires

Frequently Asked Questions (FAQs)

What should I look for when choosing a structural grade steel plate supplier?
Focus on quality certifications like ISO 9001, product range, factory capacity, years of experience, and technical support. Check if they can meet your required steel specifications and offer consistent supply.

How can I verify the quality of the steel plates a supplier provides?
Ask for mill test certificates and independent third-party inspection reports. Quality suppliers will readily share documentation and may offer sample plates for your inspection or testing.

Is it important for the supplier to have international certifications?
Yes, international certifications demonstrate that the supplier adheres to recognized quality and safety standards and can consistently meet global demands. They also help ensure smoother export and customs processes.

What is the typical lead time for bulk steel plate orders?
Lead times vary based on order size, customization, and demand, but most bulk orders are fulfilled within 4 to 12 weeks. Always confirm your delivery timeline during negotiations to avoid project delays.

How can I assess whether a supplier can meet my project’s volume and delivery needs?
Review the supplier’s production capacity, track record on large projects, and client testimonials. Openly discuss your volume and delivery schedule to ensure they have the resources and logistics to meet your deadlines.