Piano wire

Cold-drawn wire, commonly referred to as piano wire, is created via a cold-forming technique and adheres to international standards like EN 10270-1, ASTM A228, and JIS G3522. We primarily produce round wire, but also provide alternative configurations like square or rectangular shapes. This wire is characterized by its outstanding tensile strength and is manufactured using cutting-edge techniques, making it ideal for a range of applications, both static and dynamic.
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Wire shaping

Our extensive range of shapes and sizes allows us to meet your unique requirements.

Surface finishes

Application versatility through a wide range of surface finishing options.


Our rigorous testing and material analyses ensure exceptional product performance.


We offer many delivery forms to cater to specific needs and requirements.

Premier EN 10270-1/JIS G3522 Piano wire manufacturer

 EN 10270-1 DM/DH Grades: These wires are specifically designed for dynamic applications. Ideal for environments where medium to high dynamic stresses are prevalent, these wires boast superior surface quality and exhibit minimal to no decarburization. The DM/DH grades are engineered to withstand the rigors of continuous movement.

 EN 10270-1 SM/SH Grades: The SM/SH wire grades are crafted for springs that encounter medium to high static loads. They are designed to meet the most rigorous demands, offering a spectrum of mechanical properties to suit a variety of static applications.

 EN 10270-1 SL Grade: Tailored for applications with low static stress, the SL wire grade is an economical yet robust option. It provides sufficient mechanical strength for various low-stress applications, demonstrating our dedication to offering cost-effective solutions without compromising on quality.

Product name Material Steel
range (mm)
range (MPa)

Cold drawn DM-DH

Carbon steel EN 10270-1 DM/DH 0.50 - 13.00 1160 - 2450

Cold drawn SL

Carbon steel EN 10270-1 SL 0.95 - 10.00 1060 - 1970

Cold drawn SM-SH

Carbon steel EN 10270-1 SM/SH 0.50 - 13.00 1160 - 2720

Equivalent to ASTM 228 Music spring wire

ASTM A228 sets the standard for high-quality, round, cold-drawn steel music spring quality wire, intended for springs that undergo high stresses or require excellent fatigue properties. The specification demands rigorous heat and product analysis, with steel materials conforming to specified chemical compositions and undergoing various tests like tension, wrap, and torsion.

Notably, ASTM A228 music wire is a non-alloy carbon steel, known for its remarkable tensile strength among wrought carbon or non-alloy steels. Its properties are most effective when cold worked. Its unique composition makes it highly suitable for manufacturing various types of wire springs.