High-Performance Rebar Cutting Blades & OEM Replacement Knives

Premium Rebar Cutting Blades for Construction & Industrial Use

ALAS Blade in Action: High-Intensity Rebar Shearing Test
See how our heavy-duty H13 steel rebar cutter knives perform under continuous heavy loads. Engineered to prevent chipping and premature wear when cutting high-strength ribbed bars.

If you are looking for a rebar cutting blade that delivers exceptional durability, sharpness, and consistent on-site performance, our products are engineered to handle heavy-duty shearing every single day.

The quality of your cutting tools directly determines operational speed, finished edge quality, and the lifespan of your machinery. Choosing the right blade saves costly downtime, reduces maintenance expenses, and keeps your rebar cutting machine running at peak efficiency.

1. Material Selection: Choose the Right Grade

The raw material defines the hardness, toughness, and service life of the tool. We offer four professional-grade materials tailored to specific cutting conditions:

H13 (Premium Grade)

H13 is the gold standard for high-volume operations. This hot-work die steel provides superior toughness, excellent wear resistance, and high thermal stability. An H13 rebar cutting blade can handle continuous high-strength deformed bars without deformation or edge chipping.

Cr12MoV (High Hardness)

These blades offer extreme hardness and superior wear resistance, making them perfect for cold-rolled hard bars and general-purpose shearing. Note: Since Cr12MoV is less impact-resistant, avoid heavy-shock operations to prevent cracking.

9CrSi (Cost-Effective)

The most economical choice for daily use. It is easy to machine and perfectly meets the requirements for low-to-medium strength steel bars, making it highly popular for small and medium construction sites.

High-Nickel Alloy (Abrasive Resistance)

Engineered specifically for processing rusted scrap mixed with sand, gravel, or dirt. This alloy provides outstanding abrasion resistance and maintains its edge longer in harsh, dirty environments.

2. Why Partner with ALAS?

Our products stand out in the market because we focus on premium metallurgy, precision engineering, and real-world durability.

• Premium Raw Materials: Every batch undergoes professional vacuum heat treatment to achieve the perfect balance of hardness and impact toughness.

• Extended Service Life: Featuring fully ground edges, our knives stay sharp longer and resist micro-cracking during high-frequency cycles.

• Universal Compatibility: Our parts perfectly fit most mainstream rebar cutters, including local GQ40, GQ50, and GQ60 series, as well as premium global brands like SIMA, ALBA, TECMOR, and SEIM.

• Factory-Direct Pricing: Buy directly from the manufacturer—no middlemen, competitive wholesale rates, and reliable OEM-grade quality.

• Custom Engineering Service: We can manufacture custom shapes and sizes based on your blueprints or machine specifications, optimizing the steel grade for your specific application.

3. Application Matching Guide

To maximize efficiency and lifespan, match your blade material to the specific steel type:

• Ordinary Low-Carbon Round Bars: Use 9CrSi or Cr12MoV for economical, stable performance.

• High-Strength Deformed Rebar: Choose H13—its superior toughness prevents premature edge wear and chipping.

• Rusted Scrap with Debris/Gravel: Select a High-Nickel Alloy to withstand extreme abrasion.

4. Standard Dimensions for GQ Series Cutters

These are the standard specifications for domestic GQ series rebar cutters. Custom dimensions are available upon request.

MOQ: 2 Pieces

5. Replacements for Imported European Machinery

We supply direct-fit, high-performance replacement parts for premium European brands like SIMA, ALBA, TECMOR, and SEIM.

6. Buying Tip: How to Spot Quality

Always look for manufacturing processes that combine full precision grinding with vacuum heat treatment. This combination ensures uniform interior steel hardness, razor-sharp edges, and consistent performance, preventing unexpected chipping or premature dulling during demanding shifts.

7. Frequently Asked Questions (FAQ)

Q: What is the recommended grade for GQ40/GQ50/GQ60 machines?

A: Standard dimensions like 80×80×17 mm and 90×90×20 mm fit most of these models. For heavy-duty or continuous site work, we highly recommend upgrading to the H13 premium grade.

Q: H13 vs. Cr12MoV—which material should I choose?

A: H13 provides superior impact toughness and thermal stability, making it best for high-frequency, heavy-duty cutting. Cr12MoV offers higher surface hardness for cold-rolled steel but is more brittle under heavy impact shocks.

Q: What is your Minimum Order Quantity (MOQ)?

A: Our standard MOQ is just 2 pieces for both standard sizes and custom orders.

Q: Which blade works best for recycled or demolition scrap metal?

A: Go with our High-Nickel Alloy. It is specifically formulated to resist the extreme abrasion caused by rust, sand, concrete crust, and gravel.

Q: Do you support custom manufacturing?

A: Yes. We can customize dimensions, bolt-hole configurations, and steel hardness based on your technical drawings or OEM specifications.

8. Installation & Maintenance Guidelines

To maximize the performance and operational lifespan of your rebar cutting blade, please follow these standard procedures:

1. Clean the Seat: Thoroughly clear out all metal fines, rust, and scale from the blade holder before positioning the new knife.

2. Set the Clearance: Maintain a blade-to-blade clearance within 0.2 mm to ensure clean shears and prevent structural stress on the edges.

3. Torque Evenly: Tighten all mounting bolts to 40–50 N·m using a torque wrench to prevent any tilting or misalignment.

4. The Break-In Phase: Run the first 10 to 20 cycles at a lower speed or on softer material. This seats the tool perfectly and significantly reduces the risk of early micro-cracking.