Slitting Line Knives & Tools

SHINTE Machinery is a professional and reliable manufacturer and supplier of high-quality Shearing Knives with Coating, Round Shape and Roughness Ra0.2/Ra0.4 in China. We specialize in precision coated circular shearing solutions for the metallurgical, steel service centers, sheet metal fabrication, stainless steel processing, and high-speed slitting industries worldwide. Established in 1999, Shinite Machinery Co., Ltd. has over 25 years of expertise in industrial circular blades and cutting tools. For industry insights, visit our industry news page.

Product Range

We supply a complete range of industrial circular shearing knives with advanced coatings, optimized for clean, high-speed slitting and cutting of metal sheets, coils, and plates. Explore our full range at Slitting Line Knives and Tools and Mechanical Knife, including:

• High Quality Shearing Knives with Coating Round Shape and Roughness Ra0.2 Ra0.4
• Coated Circular Slitting Knives for Sheet Metal – view related Circular Slitter Blades
• Round Slitting Knives for Cut-to-length and Slitting Lines
• Precision Coated Circular Guillotine Knives for Rotary Shearing
• High tensile steel sheet circular slitting knives
• Stainless steel coil circular slitting knives – see also Metal Processing
• Heavy-duty round shearing knives with advanced PVD coating
• Customized coated circular shearing knives with Ra0.2/Ra0.4 roughness and special dimensions

Key Product Advantages of Our Shearing Knives with Coating Round Shape and Roughness Ra0.2 Ra0.4

1. Premium Material Selection & Advanced Coating Technology

Our circular shearing knives are made from high-grade alloy tool steels (D2, SKD11, Cr12MoV, H13, H13K, and proprietary HMB/HMK developed by Shinite) and coated with high-performance TiAlN, TiN or other advanced coatings via PVD technology. This coating delivers exceptional results when cutting:

• Stainless steel sheets and coils
• High tensile strength plates and cold/hot rolled steel
• Carbon steel, galvanized steel, and non-ferrous metals
• Thin to medium gauge metals requiring smooth, burr-free slitting edges

The advanced coating significantly increases surface hardness, provides excellent oxidation and wear resistance, reduces friction, and ensures superior cutting performance and longer blade life. For more technical details, visit our Production Process page. Learn more about blade maintenance from our blog: How to Extend the Life of the Slitting Blade.

2. Advanced Heat Treatment & Precision Coating

We combine precise vacuum heat treatment with professional PVD coating processes under strict temperature and thickness control. This results in optimal substrate hardness (HRC 58–62), superior toughness, outstanding thermal stability, low coefficient of friction, and exceptional edge retention — ideal for high-speed circular slitting operations while maintaining Ra0.2/Ra0.4 surface roughness. Shinite’s independent R&D ensures continuous innovation in coating and heat treatment.

3. High-Precision Machining, Round Shape & Exact Surface Roughness

Every Coated Round Shearing Knife is precision-ground using advanced CNC equipment, high-precision cylindrical grinders, and polishing machines to achieve strict surface roughness (Ra 0.2–0.4μm) and perfect round shape. We strictly control dimensional tolerance, roundness, and edge geometry. Full customization includes:

• Exact circular knife dimensions (outer diameter, inner diameter, thickness)
• Precise surface roughness Ra0.2 or Ra0.4 as per customer requirements
• Special edge angles optimized for circular slitting and shearing
• Mirror-like smooth surface finish for reduced material adhesion
• Solid or laminated round designs with coating on all cutting surfaces

Discover our precision capabilities on the Factory VR tour.

4. Rigorous Multi-Stage Quality Control

We implement a comprehensive quality system from raw material through heat treatment, precision grinding, coating deposition, to final inspection. Each knife undergoes hardness testing, coating thickness measurement, adhesion testing, surface roughness verification, roundness inspection, and trial cutting. This guarantees zero defects, perfect edge sharpness, consistent Ra0.2/Ra0.4 roughness, precise round shape, and reliable high-performance in your slitting machines. View our quality commitments at Certificates.

Product Introduction

Our Shearing Knives with Coating Round Shape and Roughness Ra0.2 Ra0.4 are available in various structures, including solid circular blades, laminated multi-piece round designs, and precision rotary slitter knives. They are specifically engineered for high-speed, high-volume metal sheet and coil slitting lines. Browse all circular shear solutions at Shearing Machine Blades.

High-performance options include:

• Multi-layer PVD coating for maximum oxidation and wear resistance
• Premium Powder Metallurgy Tool Steel substrates
• Special alloy bases (including Shinite’s HMB/HMK) combined with advanced coatings for extreme slitting conditions

Whether you need standard replacement circular knives or fully custom coated shearing knives with exact round shape and Ra0.2/Ra0.4 surface roughness, we deliver solutions that reduce burrs, minimize built-up edge, extend service life up to several times longer than uncoated blades, and lower your overall tooling costs.

Company Strength

Company Overview

SHINTE MACHINERY Co., Ltd. (also known as Shinite Knife) is a leading Chinese manufacturer of coated circular shearing knives, slitting blades, rotary cutters, and precision metallurgical cutting tools. Located in Ma’anshan, Anhui, we serve ferrous metallurgy, petrochemical, metal fabrication, and other heavy industries. Visit our full Company Profile and About Us.

• Over 25 years of specialized experience in circular blade manufacturing and PVD coating technology (established 1999)
• Modern factory with dedicated coating workshop and complete circular blade production lines
• Professional team delivering 147+ completed projects and serving 900+ global customers
• Complete in-house production: electric furnace, forging, heat treatment, precision grinding, CNC machining, polishing, and advanced PVD coating center
• Independent R&D department focused on coating optimization, proprietary alloys, and high-performance circular shearing knife development

Core Strengths

• Rich expertise in producing high-quality Shearing Knives with Coating Round Shape and Roughness Ra0.2 Ra0.4
• Professional engineering team offering technical support, coating recommendation, and blade optimization
• International certifications including ISO 9001 and ISO 14001 — see Certificates
• Trusted by major steel groups and fabricators worldwide — learn why we're a top choice: Top Shearing Machine Manufacturer

Packaging and Shipping

• Robust protective packaging with anti-rust oil, foam protection, and strong wooden crates to ensure surface roughness and coating integrity during transport
• Fast international delivery via FedEx, UPS, DHL, and reliable ocean freight partners
• Worldwide shipping and door-to-door service for global customers seeking premium coated round shearing knives from China

Certifications and Patents

SHINTE Machinery holds multiple utility model patents and international certifications including ISO 9001 and ISO 14001. These achievements demonstrate our continuous innovation in PVD coating technology, precision grinding for Ra0.2/Ra0.4 roughness, exact round shape machining, and circular blade geometry specially developed for high-speed metal slitting applications. Full list available on our Certificates page.

Why Choose Our Shearing Knives with Coating Round Shape and Roughness Ra0.2 Ra0.4?

1. Significantly longer blade life (up to 3–10 times vs uncoated) thanks to advanced coating wear resistance
2. Ultra-smooth Ra0.2/Ra0.4 surface finish reduces material adhesion and delivers cleaner, burr-free slitting
3. Precise round shape and dimensional accuracy for perfect machine fit and reduced vibration
4. Higher slitting speeds, lower heat generation, and reduced friction
5. Lower total tooling cost, fewer re-sharpenings, and minimized machine downtime
6. Full customization and professional technical support for your specific circular slitting requirements

Learn more about slitting blade basics: What is a Guillotine Shear Blade, Shear Blades for Sheet Metal Beginner Guide

Contact us today for a free quote, technical consultation, coating samples, or custom Shearing Knives with Coating Round Shape and Roughness Ra0.2 Ra0.4. Let SHINTE Machinery help you achieve superior slitting performance, higher productivity, and maximum ROI. Reach out via our Contact Us page or explore more products at www.shiniteknife.com.