Special-shaped Spring

Your Professional Special-shaped Spring Supplier

Zhuji Xuanyu Spring Co., Ltd. (formerly Zhuji Printing Machine Spring Factory) is a high-quality spring manufacturer with 28 years of professional experience, recognized as a pioneer and leader in China’s printing press and die-cutting machine industries. We are consistently dedicated to providing exceptional spring solutions for our clients.

Wire Formed Springs
Wired-formed springs are various shaped elastic components processed through precision wire bending and forming technology.

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Torsion Bar Springs
A torsion bar spring is a mechanical component that utilizes the torsional elasticity of a metal rod to store and release energy.

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Wave Springs
Wave springs, also known as wave springs, are thin, ring-shaped elastic metal elements composed of several wave crests and troughs. Wave springs are widely used in industries such as motors, textile

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Retaining Rings
A retaining ring is a precision-manufactured ring-shaped metal fastener used to install in shafts or slots to axially fix bearings, gears, and other components, preventing them from shifting or

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Constant Force Springs
Xuanyu Springs is a professional provider of constant force spring solutions. The core design feature of constant force springs lies in their ability to provide a nearly constant force output

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Why choose us

Quality Control

We maintain a strict internal inspection process. Each batch of products undergoes multiple tests, including accuracy, pressure resistance, and service life. Key inspection data can be provided upon request.

Logistics Solutions

With extensive export experience, we can arrange sea freight or international express delivery (DHL, FedEx, etc.) and offer trade terms such as FOB Ningbo/Shanghai to ensure safe and efficient delivery.

Sales Market

We have established stable supply partnerships in Southeast Asia, Europe, North America, and the Middle East, and we have served customers from countries such as Germany, Japan, the United States, and India for many years.

Our Service

From order placement to shipment, we maintain close communication. You can track order progress at any time, and we can provide photos or videos of key production stages upon request, allowing you to monitor quality remotely.

Product Parameters

Main Products	Special-shaped Spring
OEM/ODM	Accepted
Specification	Make as per drawing, wire diameter from 0.1mm to 20mm.
Material	Carbon steel (SWC), stainless steel (SuS), music wire (SWP), alloy steelSEA9260/9254/6150,SUP9/SUP10/SUP12,51CrV4,inconel X750, etc.
Surface Treatment	Zinc plated, nickel plated, electrophoresis, oxidation black, powder coating, blasting.geomet, rust-preventative oil,etc.
Certificate	ISO/TS16949-2002,IS09001-2000,IS014000.
Lead Time	Samples:3-7 days; Production:7-15 days after deposit recieved.
Shipment	By sea, by air, UPS, TNT, Fedex, express delivery, etc.

Structural and Design Adaptability

The Shaped Spring features a highly adaptable structure designed to fit into spatially constrained environments without compromising spring performance. Its custom-shaped spring profile allows precise conformation to complex geometries, optimizing mechanical integration. The availability of multiple materials enhances compatibility with various component substrates and environmental conditions. Moreover, customizable wire diameter and length facilitate modular application tailored to specific system requirements. This design flexibility enables engineers to incorporate the spring into advanced assemblies while maintaining consistent force parameters, thus reducing the need for multiple part variants and simplifying inventory management.

Enhanced Performance and Operational Reliability

Performance-wise, the delivers dependable elasticity and consistent damping properties critical for systems requiring precise force control over extended use. The spring’s resistance characteristics ensure minimal variability in load response, thereby supporting stable operation even in high-cycle or vibration-prone settings. Its customizable specifications combined with surface treatment options contribute to enhanced wear resistance and corrosion protection, extending functional lifespan and reducing maintenance intervals. By reliably supporting critical components such as braking mechanisms and electronic connectors, this precision spring improves overall system efficiency and reduces downtime risk for manufacturers and end users alike.

Surface Treatment

Steel	Zinc Plating, Oxide Black, Nickel Plating, Chrome Plating, Powder Coated, Electrolysis, electro painting,sliver plating, golden plating,polish etc.
Aluminum	Clear Anodized, Color Anodized, hard color anodized,Sandblasted Anodized, Brushing,Polishing, power coating,brushed.
Stainless steel	Polishing, Brushed,Passivating, Sandblasting, Laser Engraving.

Common Materials For Special-Shaped Springs

Stainless steel spring wire	301, 302, or 304 stainless steel, springs made of stainless steel are not recommended when temperatures exceed 260 degrees Celsius (500 degrees Fahrenheit).
Metal String Material	Springs made from musical instrument metal strings are not recommended when temperatures exceed 121 degrees Celsius (250 degrees Fahrenheit).
Other material	High temperature alloy wire, SAE6150 chrome vanadium steel, INCONEL -750, INCONEL -718, Nimonic 90, piano wire 72A, 65mn, 60si2mn, 55crsi, 50crva, Monel, beryllium copper, chromium silicon steel, Elgiloy, phosphor bronze, galvanized piano wire Wait.

Adavantage

Provide sample drawings (such as customized springs, need to provide specific dimensions such as hole diameter, outer diameter, inner diameter, wire diameter, free length, etc).

Material (such as customized spring, optional stainless steel, piano wire, ordinary carbon steel wire, oil quenched alloy, high temperature alloy, special alloy, etc).

Confirm the quantity, do you need to make a sample first.

Agreed delivery time.

Confirm contract or pre-paid proofing fee (refunded for mass production).

Shipment according to the agreed time (international express delivery).

Certificates

FAQ

Q: Are you a trading company or a manufacturer?

A: We are a manufacturer, you are warmly welcomed to visit us.

Q: What information do you need for quote?

A: Detailed drawings(PDF/STEP/IGS/DWG) with material, quantity and surface treatment information.

Q: Can I get a quote without detailed drawings?

A: Yes, it's appreciated if you can send us your samples, or drafts with detailed dimensions for us to quote.

Q: Will my drawings be divulged to others?

A: No, it's our obiligation to protect our customers' privacy of drawings, signing NDA is accepted if need.

Q: What's the lead time?

A: Usually, 1-2 weeks for samples, 3 weeks for mass production.

Q: What if the products I received are of poor quality?

A: If the products you received are of quality issue, please send us pictures or videos to let us know the details, we will arrange to reproduce for you if it's our responsibility.

As one of the most professional special-shaped spring manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to wholesale bulk customized special-shaped spring made in China here from our factory. Contact us for more details.

Open retaining rings, Torsion bar springs made of spring steel, Automotive Retaining Rings