Stamping Blanks
Precision Hardware

Precision Hardware

Forging industrial backbone with micron precision, LH Hardware delivers end-to-end solutions for global advanced manufacturing – from precision springs, custom springs to stamping, shafts, and linear motion systems

Precision Springs

Precision Springs

High-precision springs manufactured via CNC coiling or cold forging, featuring tight tolerances (±0.003mm) and superior fatigue resistance, ideal for automotive suspension and precision instrumentation requiring consistent load-bearing performance.

Special Springs

Special Springs

Custom-engineered springs for extreme conditions, such as high-temperature (up to 300°C) or corrosive environments (titanium/hastelloy), used in aerospace hydraulics and nuclear reactor dampers

Wire Forming

Wire Forming

Multi-station cold heading process forming wire (Φ0.1-3mm) into precision parts (connectors, snaps) with ±0.02mm tolerance, serving 5G infrastructure and smart home applications

Precision Stamping

Precision Stamping

Micron-level stamping (Ra≤0.4μm) of 0.05-3.5mm metal sheets via progressive dies, producing EMI shields and battery contacts for semiconductor and EV battery modules

Precision Shafts

Precision Shafts

Ultra-precision ground shafts (Ra≤0.2μm) with ±0.002mm diameter tolerance, employed in robotic joints and CNC spindles for ±0.005mm repeatability

Precision Springs

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Compression Spring Torsion Spring Extension Spring
Special Springs

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Wave Spring Clockwork Spring Oil Seal Spring
Wire Forming

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Wire Bending Coil Forming Precision Wire Forming CNC Wire Forming
Precision Stamping

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Stamping Blanks Deep Drawn Shells Tubular Formed Components contoured-stampings
Precision Shafts

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Metal Shafts Medical Shafts

Why Choose US?

Custom Solutions Tailored to your exact load, space, and environmental needs
ISO 9001 Certified Rigorous quality control at every stage
Rapid Prototyping Tested samples available in 5-7 days
Global Supply Chain Reliable delivery across North America, Europe & Asia

Contact US

E-mail: sales@lihongsprings.com
Mobile: +86 176 6501 0974
WhatsApp: +86 150 1844 0213
FAX: +86 0769-8532 4238
Add: Room 101, Building 1, No. 446 Yanglang Road, Dalingshan, Dongguan, Guangdong, China

About US

Dongguan Lihong Hardware Co., Ltd., established in 2003, is a leading spring supplier​ specializing in precision industrial springs. We offer a comprehensive range of metal spring​ solutions, including custom spring​ designs and high-performance steel spring​ products. Our advanced facilities and ISO/IATF certifications ensure reliable quality for automotive, electronics, and medical industries, delivering value through innovation and precision manufacturing.

What is Stamping Blanks?

Stamping blanks are precision-processed metal sheets/strips specifically designed for stamping operations, featuring tight tolerances (±0.05mm) and optimized mechanical properties to improve stamping efficiency by over 30%.

High-Precision Perfo···

High-Precision Perforated Meta···

High-Precision Perforated Metal Diffusion/Fi···

High-Precision Perforated Meta···

High-Precision Perforated Metal Diffusion/Filter Disc

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Precision Square-Fra···

Precision Square-Frame Multi-L···

Precision Square-Frame Multi-Layer Coil Spri···

Precision Square-Frame Multi-L···

Precision Square-Frame Multi-Layer Coil Spring Assembly

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Precision Metal Conn···

Precision Metal Connecting Blo···

Precision Metal Connecting Block and Spacer

Precision Metal Connecting Blo···

Precision Metal Connecting Block and Spacer

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SUS301 Stainless Ste···

SUS301 Stainless Steel Stamped···

SUS301 Stainless Steel Stamped Precision Sym···

SUS301 Stainless Steel Stamped···

SUS301 Stainless Steel Stamped Precision Symmetrical

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SUS304 Stainless Ste···

SUS304 Stainless Steel Stamped···

SUS304 Stainless Steel Stamped Honeycomb

SUS304 Stainless Steel Stamped···

SUS304 Stainless Steel Stamped Honeycomb

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Electrophoretic Stam···

Electrophoretic Stamped Precis···

Electrophoretic Stamped Precision Fixing

Electrophoretic Stamped Precis···

Electrophoretic Stamped Precision Fixing

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Precision Stainless ···

Precision Stainless Steel Roun···

Precision Stainless Steel Round Hole Filter ···

Precision Stainless Steel Roun···

Precision Stainless Steel Round Hole Filter Sieve Disc

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Industrial Flexible ···

Industrial Flexible Braided Co···

Industrial Flexible Braided Copper Strip Con···

Industrial Flexible Braided Co···

Industrial Flexible Braided Copper Strip Connector

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Plate Cylindrical Sh···

Plate Cylindrical Shaft Hinged···

Plate Cylindrical Shaft Hinged Structure

Plate Cylindrical Shaft Hinged···

Plate Cylindrical Shaft Hinged Structure

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Stamping Blanks

Pre-cut metal sheets ready for stamping into final parts.

Key Advantages

Material Efficiency

Nesting optimization reduces scrap by 40%.

Dimensional Stability

Pre-hardening guarantees ±0.03mm thickness tolerance.

Surface Quality

Mirror finish (Ra0.2μm) reduces die wear.

Batch Consistency

Auto-sorting ensures 99.9% dimensional uniformity.

Quick Changeover

Standardized interfaces enable 5-minute die change.

How They Work

Precision rolling, shearing and heat treatment processes transform metal coils into standardized blanks with optimized dimensions, hardness and surface properties for stamping.

Key Characteristics

✔️
Material Range - Covers 0.1-6mm stainless, carbon steel and alloys
✔️
Width Tolerance - ±0.05mm precision slitting
✔️
Hardness Control - Adjustable HRC20-50 for various stamping needs

Key Design Factors

✔️
Grain Direction – Rolling direction must align with stamping forces
✔️
Edge Quality – Laser cutting maintains burr height < 0.01mm
✔️
Stress Distribution – Vibration aging removes 98% internal stress

Manufacturing Process

Material Inspection

Spectrometry verifies composition.

Uncoiling

Constant tension prevents deformation.

Laser Cleaning

Removes oxides and oils.

Multi-pass Rolling

20-roll mill controls thickness.

In-line Annealing

Controlled atmosphere heat treatment.

Slitting: Diamond

tools achieve ±0.02mm width.

Surface Treatment

Electropolishing/coating.

Packaging

VCI paper + vacuum sealing.

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