HR Slit Coils

Product Description

HR Slit Coils are a type of Hot Rolled (HR) steel coil that has been processed by slitting (longitudinally cutting) into narrower strips to meet specific width requirements. They are a fundamental product in the steel industry, offering a balance of strength, formability, and cost-effectiveness for various manufacturing and construction applications.

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Key Components and Production Process

HR Slit Coils are defined by their base material and the secondary process they undergo:

• Hot Rolled (HR) Steel Coil: This is the starting material. Its produced by heating steel slabs above their recrystallization temperature (typically over 1,700F or 927C) and then rolling them into large, continuous coils.

  • Characteristics of HR Steel: It is generally known for its high strength-to-weight ratio, good ductility, and lower cost compared to cold-rolled steel. The surface typically has a rough, scaly finish (mill scale) due to the high-temperature processing. Pickling and oiling (HRPO) can be performed to remove the scale and improve the surface for certain applications.

• Slitting: This is a precision metal processing technique where the wide master coil (the original HR coil) is unwound and passed through a slitting machine. This machine uses a series of circular rotary blades to cut the coil lengthwise into multiple narrower strips, or slit coils, according to the customers exact width specifications.

  • Result: The slitting process ensures high dimensional accuracy in width and often provides a smoother edge with minimal burrs compared to other cutting methods. The slit coils are then recoiled for shipping.

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Specifications and Properties

Specifications for HR Slit Coils vary based on the required final use, but typically include:

• Material Grades: Available in various grades, such as commercial quality (CQ), structural quality (SQ), and different High-Strength Low-Alloy (HSLA) grades, including those for automotive applications (e.g., E160 to E450).

• Thickness Range: Commonly available in a wide range, such as 1.2 mm to over 25 mm.

• Width: The key customized dimension, typically ranging from very narrow strips up to around 500 mm or more, depending on the slitting equipments capacity and the final products requirement.

• Tolerances: Slit coils are produced with tight tolerances, especially on the width and thickness, to ensure consistency for high-speed manufacturing processes.

Grade D Steel Excellence

Crafted from Grade D steel, our HR slit coils deliver superior performance for rigorous industrial requirements. Grade D assures strength and toughness, making these coils suitable for heavy-duty applications in various sectors including automotive, construction, and machinery manufacturing. Trust in the consistent material quality for your core processes.


Warranty Assurance & Support

We stand behind our product with a comprehensive 1-year warranty. This coverage guarantees that any manufacturing defects or material inconsistencies will be addressed promptly. Our dedicated support team is readily available to assist customers through the warranty process, ensuring minimal disruption to your workflow.