Hot Sale MS Plate, Hot Rolled Iron Sheet, HR Steel Coil Sheet & Black Iron Plate (Including S235, S355, SS400, A36, A283, Q235, Q345)

These products are all hot-rolled carbon structural steels (or low-alloy structural steels) widely used in construction, machinery, and manufacturing. They are "hot-selling" due to their balanced performance, cost-effectiveness, and versatility. Below is a detailed overview of their definitions, key characteristics, grade differences, applications, and reasons for popularity:

1. Basic Definitions

MS Plate (Mild Steel Plate): Refers to low-carbon steel plates (carbon content ≤0.25%) with good ductility and weldability, suitable for general structural purposes.

Hot Rolled Iron Sheet/HR Steel Coil Sheet: Produced by rolling steel at high temperatures (above recrystallization point), available in sheet (flat) or coil form. The surface has a natural oxide layer (black or gray), hence often called "black sheet/coil".

Black Iron Plate: A common term for uncoated hot-rolled steel plates (no galvanizing or painting), named for its dark surface due to oxide scale.

2. Common Characteristics

All these products share core advantages that drive their popularity:

 

Cost-Effective: Hot-rolled production processes are simpler than cold-rolled, resulting in lower costs, making them ideal for large-scale structural applications.

Good Formability: Easy to cut, weld, bend, and drill, suitable for diverse manufacturing needs.

Balanced Mechanical Properties: Offer sufficient strength (yield strength 235-355 MPa, depending on grade) and toughness for most structural loads.

Wide Availability: Mass-produced globally, with stable supply chains and standardized production (compliant with international/national standards).

 

 

 

 

 

3. Key Grades & Standards

The listed grades (S235, S355, etc.) belong to different regional standards but serve similar structural purposes. Their main differences lie in yield strength and toughness requirements:

 

Grade	Standard	Yield Strength (MPa, min)	Key Application Scenarios
S235	EN 10025 (EU)	235	General construction (beams, frames), low-stress machinery parts.
S355	EN 10025 (EU)	355	Heavy-duty structures (bridges, cranes), high-load components.
SS400	JIS G3101 (Japan)	245-255	Building structures, automotive frames, pipes.
A36	ASTM A36 (USA)	250	Construction (buildings, bridges), machinery bases.
A283	ASTM A283 (USA)	205-230	Low-strength structural parts (storage tanks, light frames).
Q235	GB/T 700 (China)	235	General construction, farm machinery, simple steel structures.
Q345	GB/T 1591 (China)	345	High-rise buildings, pressure vessels, engineering machinery.

 

 

 

 

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our Hot Sale MS Plate/Hot Rolled Iron Sheet/HR Steel Coil Sheet/Black Iron Plate(S235 S355 SS400 A36 A283 Q235 Q345), and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

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