Slitting Line Knives & Tools

SHINTE Machinery is a professional and reliable manufacturer and supplier of high-performance Double Third Edge Angle Shear Steel Blades Smooth Surface in China. We specialize in precision shear blades with optimized triple-edge geometry and mirror-smooth surface finish for the metallurgical, steel service centers, sheet metal fabrication, stainless steel processing, and high-speed cutting industries worldwide. Established in 1999, Shinite Machinery Co., Ltd. has over 25 years of expertise in industrial blades and cutting tools.

Product Range

We supply a complete range of industrial shear blades featuring Double Third Edge Angle design and ultra-smooth surface, optimized for clean, burr-free, high-speed cutting of steel sheets, coils, and plates. Explore our full range at Shear Blades & Knives and Mechanical Knife, including:

• Double Third Edge Angle Shear Steel Blades Smooth Surface
• Double Third Edge Angle Shear Blades with Smooth Surface
• TiAlN Coated Guillotine Shear Blades with triple edge angle — view related Cut to Length Lines and Guillotine Shears
• Cut-to-length line shear blades with Double Third Edge Angle
• Squaring shears and precision guillotine knives with smooth surface
• High tensile steel sheet shearing blades
• Stainless steel coil crop and scrap shears — see also Scrap Recycling Knives
• Heavy-duty billet shears with advanced edge geometry
• Customized Double Third Edge Angle shear blades with smooth surface finish

Key Product Advantages of Our Double Third Edge Angle Shear Steel Blades Smooth Surface

1. Premium Material Selection & Advanced Edge Geometry

Our shear blades are made from high-grade alloy tool steels (D2, SKD11, Cr12MoV, H13, H13K, Hermanite alloy steel, and proprietary HMB/HMK developed by Shinite) and precision-engineered with a unique **Double Third Edge Angle** design. This special triple-angle geometry delivers exceptional results when cutting:

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

The Double Third Edge Angle combined with ultra-smooth surface significantly reduces cutting force, minimizes burr formation, improves chip flow, and extends blade life. For more technical details, visit our Production Process page.

2. Advanced Heat Treatment & Precision Grinding Technology

We combine precise vacuum heat treatment with multi-stage CNC grinding and polishing processes under strict tolerance control. This results in optimal substrate hardness (HRC 58–62), superior toughness, outstanding edge retention, and a mirror-smooth surface finish (Ra 0.1–0.4μm) — ideal for high-speed shearing operations while maintaining long-term sharpness and clean cuts. Shinite’s independent R&D ensures continuous innovation in edge geometry and surface technology.

3. High-Precision Machining, Smooth Surface & Exact Specifications

Every Double Third Edge Angle Shear Steel Blade is precision-ground using advanced CNC equipment, high-precision surface grinders, and polishing machines to achieve an ultra-smooth surface. We strictly control all dimensions, edge angles, and surface roughness. Full customization includes:

• Exact blade dimensions (length up to 6000mm or longer)
• Precise Double Third Edge Angle geometry tailored to your material and machine
• Mounting holes and patterns as per customer drawings
• Smooth mirror-like surface finish for reduced material adhesion and cleaner cuts
• Laminated, strip-type, or one-piece designs with optimized edge angles on all cutting surfaces

Discover our precision capabilities on the Factory VR tour. See also the dedicated product page: Double Third Edge Angle Shear Steel Blades Smooth Surface.

4. Rigorous Multi-Stage Quality Control

We implement a comprehensive quality system from raw material through heat treatment, precision grinding, edge angle verification, surface polishing, to final inspection. Each blade undergoes hardness testing, angle measurement, surface roughness verification, dimensional inspection, and trial cutting. This guarantees zero defects, perfect Double Third Edge Angle geometry, ultra-smooth surface, and reliable high-performance in your shearing machines. View our quality commitments at Certificates.

Product Introduction

Our Double Third Edge Angle Shear Steel Blades Smooth Surface are available in various structures, including straight strip-type blades with accurately machined mounting holes, laminated multi-piece designs, and heavy-duty one-piece guillotine knives. They are specifically engineered for high-speed, high-volume steel sheet and coil processing lines. Browse all shear blade solutions at Shearing Machine Blades.

High-performance options include:

• Proprietary Double Third Edge Angle geometry for superior cutting performance
• Premium Powder Metallurgy Tool Steel and HMB/HMK substrates
• Optional TiAlN or other advanced coatings combined with smooth surface finish for extreme conditions

Whether you need standard replacement blades or fully custom Double Third Edge Angle shear blades with mirror-smooth surface, we deliver solutions that reduce burrs, lower cutting force, extend service life significantly, 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 precision shear blades with Double Third Edge Angle technology, guillotine knives, circular knives, slitting blades, and metallurgical cutting tools. Located in Ma’anshan, Anhui, we serve ferrous metallurgy, petrochemical, nuclear power, and other heavy industries. Visit our full Company Profile and About Us.

• Over 25 years of specialized experience in shear blade manufacturing and edge geometry innovation (established 1999)
• Modern factory with dedicated precision grinding and polishing workshop
• 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 coating center
• Independent R&D department focused on Double Third Edge Angle optimization, smooth surface technology, and high-performance shear blade development

Core Strengths

• Rich expertise in producing high-performance Double Third Edge Angle Shear Steel Blades Smooth Surface
• Professional engineering team offering technical support, edge angle recommendation, and blade optimization
• International certifications including ISO 9001 and ISO 14001 — see Certificates
• Trusted by major steel groups and fabricators worldwide

Packaging and Shipping

• Robust protective packaging with anti-rust oil, foam protection, and strong wooden crates to ensure smooth surface and edge 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 Double Third Edge Angle China shear blades

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 Double Third Edge Angle geometry, precision grinding for smooth surfaces, and blade performance specially developed for high-speed steel shearing applications. Full list available on our Certificates page.

Why Choose Our Double Third Edge Angle Shear Steel Blades Smooth Surface?

✔ Significantly longer blade life and reduced cutting force thanks to optimized Double Third Edge Angle geometry
✔ Ultra-smooth surface finish reduces material adhesion and delivers cleaner, burr-free cuts
✔ Superior edge retention and fewer re-sharpening cycles
✔ Lower machine vibration and higher cutting speeds
✔ Lower total tooling cost and minimized machine downtime
✔ Full customization and professional technical support for your specific shearing requirements

Contact us today for a free quote, technical consultation, samples, or custom Double Third Edge Angle Shear Steel Blades Smooth Surface. Let SHINTE Machinery help you achieve superior shearing performance, higher productivity, and maximum ROI. Reach out via our Contact Us page or explore more products at www.shiniteknife.com.