Hot-rolled steel is the most basic type of carbon steel, and it is often used in products that require a smooth finish, such as cars, truck frames, water heaters, farm machinery, compressor chambers, and guard rails. It’s made by rolling steel at temperatures above its recrystallisation point, making it easier to shape. Unlike cold-rolled steel, it usually doesn’t need extra heat treatment after forming. Hot-rolled steel is produced at temperatures over 1000° Celsius, changing the metal’s original features and shape. Explore What Are the Applications of Hot-Rolled Steel With Ratna Steeltech.
What is the rolling process?
The term “rolling” is widely used in metalworking. It describes a process where metal is passed between two rolls to make it thinner and achieve a consistent thickness. Rolling is the first step in manufacturing all steel products, such as structural steel and coils. Rolling mills process steel quickly, transforming semi-finished casting products like ingots, blooms, billets, or slabs into finished products such as beams, bars, or coils.
Applications of Hot-rolled steel in the form of ERW pipes and tubes
Since hot-rolled steel shrinks slightly during cooling, its final shape is less precise. However, due to its improved ductility and toughness, it can be easily shaped into almost any form. It is one of the most versatile steel products in the industry.
Some of the common uses of ERW pipes in different industries include:
- Construction
Hot-rolled steel is a fundamental component in the construction industry. It is used to create structural elements such as beams, columns, and frameworks for buildings, bridges, and other infrastructure. Additionally, it is the primary material for producing pipes used in water supply, drainage systems, and gas pipelines.
- Manufacturing
The manufacturing sector heavily relies on hot-rolled steel. It is transformed into various components for automobiles, including chassis, frames, and suspension systems. In the furniture industry, hot-rolled steel is used to create sturdy and stylish furniture frames.
- Energy and Infrastructure
Hot-rolled steel plays a critical role in the energy and infrastructure sectors. It is used to construct pipelines for transporting oil and gas, both onshore and offshore. Moreover, it is employed in mining operations for equipment, support structures, and transportation systems.
- Agriculture
Hot-rolled steel is essential in agriculture. It is used to construct farm equipment, irrigation systems, and storage facilities. Its durability and resistance to harsh weather conditions make it ideal for these applications.
Unique Features of HR ERW Pipe
- Solid and Resistant to Corrosion
- Highly Flexible
- Superior Strength
- Durable and Sturdy
Hot rolled steel vs Cold rolled steel.
Hot rolling is more commonly used because it’s cost-effective and requires less force and energy. It’s used in processes like rolling, metal extrusion, and forging. When steel is hot-rolled, it shrinks as it cools, giving less control over its final size and shape compared to cold-rolled steel.
On the other hand, cold-rolled steel has a smoother surface and higher strength than hot-rolled steel, but it also comes with internal stresses that need to be relieved before use.
Choosing between hot-rolled and cold-rolled steel depends on the project’s needs, like surface quality and material strength, rather than their metallurgical specifications or grades.
Features and benefits of hot-rolled steel
It includes:
– High flexibility, making structures flexible.
– Shrinks quickly as it cools.
– Easy to weld.
– Less expensive due to shorter processing time.
– Easy to bend and shape.
– Gradual cooling reduces internal stresses.
– Original blue and black with an oily surface and thickness > 0.9mm.
– Poor aesthetics with rough edges.
– Average technical standards with large tolerances.
– Shape and size can be adjusted as needed.
– Strong load-bearing capacity.
– Can weld cracks at high temperatures.
– Risk of damaging steel ingot if the hot rolling process is not precise.
– Suitable for outdoor use with anti-corrosion coatings to prevent rust.
– Cheaper than cold rolled steel.
How does Ratna Steeltech help with your hot-rolled steel requirements?
ERW pipes are strong and can handle high pressure, making them ideal for commercial use. Their primary properties include corrosion resistance, durability, and sturdiness. Due to their flexibility, they are suitable for both industrial and residential needs.
Ratna Steeltech provides high-quality hot-rolled steel in the form of:
We assist with hot-rolled steel products by providing expertise tailored to various industrial and construction needs. We are the top manufacturer of ERW pipes & tubes, providing high-quality, durable solutions in multiple sizes and shapes to meet the changing demands of different industries. Our services ensure efficient sourcing, processing, and delivery of hot-rolled steel, effectively meeting industry standards and customer requirements.