China Steel Plate Manufacturers, Suppliers and Factory - Wholesale Steel Plate

Your Professional Steel Plate/Coil Supplier

Sunlion Piping Engineering Co., Ltd. is a global supplier of piping systems and structural steel modules for energy, petrochemical, offshore, nuclear, and heavy industrial projects. With over 20 years of international project experience, Sunlion delivers vertically integrated solutions from raw materials to finished modules. The company serves leading EPC contractors and end users worldwide, providing compliant products, modular fabrication, inspection coordination, and OEM/ODM customization to support efficient and reliable project execution.

CHECKERED PLATE
Chinese National Standards (GB): GB/T 3277, GB/T 709. International Standards (ISO): ISO 8503. American Standards (ASTM/ASME): ASTM A36, ASTM A516, ASME SA-283. European Standards (EN/DIN): EN 10025,
Carbon Steel Sheet Coil
Carbon steel sheet coil and alloy steel coils sheets are sheet metal products made from carbon or alloy steel through hot-rolling or cold-rolling processes. They offer high strength, weldability, and
Stainless Steel Sheet Coil
Stainless steel sheet coil are high-alloy steel products with excellent corrosion resistance, primarily composed of chromium and nickel. They are widely used in chemical, food, construction, and
Carbon Steel Sheet Plate
Carbon steel sheet plate and alloy steel medium-thick plates are sheet metal products made from carbon or low-alloy steel through hot-rolling or cold-rolling processes. They offer high strength,
Stainless Steel Plate
Stainless steel plate are metal sheets composed of chromium, nickel, and other alloying elements, with a thickness range of 4.0–25.0mm (25.0–100.0mm is considered thick plate, and over 100.0mm is
Galvanised Steel Coil
Galvanized steel coils, galvalume steel coils, and AZM steel coils are steel products with metal protective coatings applied via electroplating or hot-dip galvanizing on low-carbon steel substrates.
Prepaint Steel Coil/Corrugated Sheet
Prepaint steel coil are composite materials made by applying one or more layers of organic coating (e.g., polyester, PVDF) onto a base material (hot-dip galvanized, galvalume, or electrogalvanized

why choose us

Quality Control

All products are manufactured to recognized standards such as ASME, DIN, GB, and JIS and undergo coordinated inspection and testing by third-party organizations such as SGS to ensure traceability and consistent quality.

Customization Services

We offer OEM and ODM services, tailored to project requirements, including material grades, dimensional tolerances, marking systems, packaging methods, and documentation, to meet both standardized and project-specific engineering needs.

Integrated Supply Chain

We manage the entire supply chain, from steel pipe sourcing to prefabricated piping and structural modules. This integrated model simplifies procurement coordination, improves schedule control efficiency, and minimizes interface risks between multiple suppliers in complex projects.

Sales Markets

With over two decades of experience executing international projects, we have delivered materials and modules to projects in the Middle East, Australia, the Americas, Africa, and Europe, supporting EPC general contractors under various technical standards and logistical conditions.

Specification

Specification Item	Details
Product Name	Steel Plate/COIL
Material	Carbon steel,Alloy steel, Stainless Steel
Process	Hot-rolled or cold-rolled
Standards	ASTM, EN, GB
Thickness	0.1 – 200 mm
Width	1000 – 2000 mm
Form	Coil/Sheet
Surface	Bare or oiled
Applications	Construction and industrial use

Applications of Steel Plate

Bridge and building construction

Metal plates are used primarily to strengthen the foundations of large structures such as bridges and warehouses, as well as for anchoring steel beams in these situations.

Military shielding

Many military vehicles and buildings use steel plates for protection against gunfire and other dangers.

Ship construction

Due to their strength and ease of welding, steel plates are also common in large ships, and are one of the most common materials used in the building of these boats.

Road plates

While construction is being done on streets, steel plates are commonly used as a temporary surface for traffic to pass over, and can cover potholes, trenches, excavations, and other damage to the normal road surface.

Common Types of Steel Plate

Cold Rolled
The cold-rolled plates are manufactured at room temperature which results in meticulous and precise dimensions with an exceptional smooth surface finish. This process provides these plates with superior mechanical attributes, boasting heightened strength and unparalleled surface quality compared to hot-rolled plates.

Hot Rolled
Manufactured at elevated temperatures, hot-rolled steel plates yield a textured surface finish and looser dimensional tolerances. These plates boast an exceptional formability which makes them ideal for heavy-duty structural applications that demand a superior strength and load-bearing capacity.

Steel Plate Grades

A36

A low carbon steel with good strength, formability that can be securely welded with a minimum yield strength of 36,000 PSI

A572-50

Higher strength steel with a minimum yield of 50,000 PSI and increased corrosion resistance

A516-70

Steel with a minimum tensile strength of 70,000 PSI that is generally used in pressure vessels and boiler

Steel Plate Processing Technology

Rolling is a metal forming process in which metal stock is passed through a pair of rolls. If the temperature of the metal is above its recrystallization temperature, then the process is termed as hot rolling. If the temperature of the metal is below its recrystallization temperature, the process is termed as cold rolling.

Heat treatment is one of a number of controlled heating and cooling operations used to bring about a desired change in the physical properties of a metal. Its purpose is to improve the structural and physical properties for some particular use or for future work of the metal. There are five basic heat treating processes: hardening, case hardening, annealing, normalizing, and tempering.

Normalizing is a heat treatment applied to steel which heating involves heating above the critical range followed by cooling in still air. It is performed to refine the crystal structure and eliminate internal stress. The process is often used to keep movement down during any heating; applied in applications when certain steels that do not significantly air harden. Normalizing is not usually called out in a specification unless the material is amendable to normalizing and there is a need for it by design.

Applications of Steel Plate

01/

Bridge and building construction: Metal plates are used primarily to strengthen the foundations of large structures such as bridges and warehouses, as well as for anchoring steel beams in these situations.

02/

Military shielding: Many military vehicles and buildings use steel plates for protection against gunfire and other dangers.

03/

Ship construction: Due to their strength and ease of welding, steel plates are also common in large ships, and are one of the most common materials used in the building of these boats.

04/

Road plates: While construction is being done on streets, steel plates are commonly used as a temporary surface for traffic to pass over, and can cover potholes, trenches, excavations, and other damage to the normal road surface.

Customization Services

We offer customized steel plate manufacturing solutions to meet your needs. Key customization options include:

Material Grades	Customizable
Thickness	Customizable
Width	Customizable
Length	Customizable
Surface Treatment	Customizable
Our customization capabilities extend beyond the options listed above. Should you have additional requirements, we are able to make flexible adjustments in accordance with your specific needs and circumstances.

Packaging and Shipping

Packaging	Steel strapping, waterproof paper or wooden support
Transportation methods	Road transport, rail transport, sea transport

FAQ

Q: What is the lead time for carbon/alloy steel coils/sheets?

A: Typically 20–60 days, depending on order volume and production schedule.

Q: How are steel plates packaged for transportation?

A: Plates are stacked and secured with steel bands, with protective materials used to prevent surface damage.

Q: What are the typical applications of steel plates?

A: Steel plates are widely used in construction, machinery fabrication, pressure vessels, and general industrial structures.

As one of the most professional steel plate manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please rest assured to wholesale high-grade steel plate at competitive price from our factory. Contact us for more details.

high carbon steel plate, Stainless Steel Plate, steel coil