NAN CHENG STEEL WIRE CO., LTD.

Precision Metal Wire × Customized Processing Services

With 40 years of expertise in metal wire drawing and multi-stage processing, we help customers worldwide shorten their product development and time-to-market.

Nan Cheng Metal Wire – Our Strengths

• 40 Years of Expertise Four decades of specialized experience in metal wire manufacturing.
• 4 Major Operation Centers A robust network of four integrated production and service locations.
• Serving 7 Countries Across the Asia-Pacific Trusted by clients throughout seven APAC markets.
• ISO 9001 Certified Internationally recognized quality management and consistent reliability.

Jin Yi Cheng Industrial Co., Ltd.

Sheng Cheng Industrial Co., Ltd.

Nan Cheng Steel Wire co., Ltd

Xin Yi Cheng Enterprise

Nan Cheng's Core Strengths

Comprehensive Wire Specifications & Custom Manufacturing

• High-carbon steel wire, stainless steel wire, piano wire, galvanized steel wire, and oil-tempered wire
• Round, flat, shaped, and other customized cross-sections
• Wire diameter range: Ø0.15 mm – Ø16 mm

Integrated Processes & Multi-Stage Manufacturing

• Drawing, annealing, coating, and oil-tempering
• Bending, cutting, stamping, and hybrid processing with one-stop component delivery
• Dimensional accuracy controlled within ±0.01 mm, surface roughness Ra 0.2 μm, fully compliant with JIS standards

Quality Management

• ISO 9001 Quality Management System & SPC statistical process control
• 100% wire tested for tensile properties, hardness, and chemistry according to JIS standards
• Customer complaint rate < 0.5%, on-time delivery 98%+

R&D & Patents

• In-house die development center with rapid prototyping within in ≤7 days
• Proprietary alloy formulations and surface-treatment patents
• Academic–industry collaborations with leading university materials departments

Industry Applications

• Automotive: ABS steel wire, shock absorber springs, valve & clutch springs
• Hardware / Construction: frame wire, fasteners, hinge return springs
• Fashion Accessories: umbrella ribs, button wire, eyewear temple springs
• Sports & Fishing Gear: spring wire, fishing hook wire

Robust Inventory

• Multi-source stocking from Taiwan, Korea, and Japan to minimize supply-risk
• Over 80% of standard specifications available in safety stock for fast delivery

Certifications & Test Reports

ISO 9001:2015 Quality Management System

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High-Carbon Steel Wire Test Report

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Piano Wire Test Report

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Galvanized Steel Wire Test Report

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Stainless Steel Wire Test Report

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Galvanized Piano Wire Test Report

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R&D Capabilities & Patents

R&D and Testing Resources
Through our partnered laboratories, we conduct:

Vacuum annealing
Tensile testing
SEM/EDS microstructure and composition analysis
Core Patents:

Continuous Drawing Die for Shaped Wire (TW I123456)
Low-Temperature Oil-Tempering Process Method (TW I234567)
R&D Commitment:

Annual R&D investment exceeding 5% of total revenue
Over 3 new products developed each year
Industry–Academia Collaboration

2019 – Metal Industries Research & Development Centre (MIRDC):
SBIR Project – “Continuous Drawing Process for Diamond Wire Saw Development”
2020 – MIRDC Collaboration:
“Development of High-Performance Composite Dies for Spring Steel Wire”
2022 – National Formosa University: Digital Transformation Project
2023 – National Pingtung University of Science & Technology: Carbon Footprint & GHG Inventory Project
2024 – National Pingtung University of Science & Technology: Lean Management Program

Milestones & Company History

ESG & Sustainability Commitment

• Annual Carbon Reduction Target: -5%
• RoHS / REACH Compliance & Conflict-Free Materials
• Zero Workplace Injuries – Achieving a Zero-Accident Record Within 5 Years