Precision Spring Engineering for Demanding Environments

SIPLEE SPRING specializes in high-temperature, corrosion-resistant, and heavy-duty springs including compression, wave, disc, torsion, and conical springs. Trusted by global industries since 2003 with over 20 million springs delivered annually.

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20+

Years of Experience

20M+

Springs Delivered Annually

$10M+

Annual Turnover

About SIPLEE SPRING

Zhejiang Sanhe Spring Co., Ltd. is a leading manufacturer of precision springs based in Wenzhou, China. With over 20 years of experience since 2003, we have established ourselves as a trusted supplier of high-performance springs for industrial, automotive, aerospace, and energy sectors.

We operate under two brands: SANHE and SIPLEE, both committed to innovation, quality, and customer satisfaction. Our 5,000 sqm production facility houses advanced equipment and a skilled workforce of over 80 employees.

ISO9001 Certified ISO14001 Certified 30+ National Patents

Our Product Range

From high-temperature alloys to corrosion-resistant materials, we design and manufacture precision springs for the most demanding applications.

High Temperature Preload Alloys Washers Springs

Designed for thermal expansion compensation in extreme environments up to 600°C.

• Material: Inconel, Elgiloy, 3J21
• Application: Industrial heaters, valves
• OEM/ODM supported

Heavy Duty Alloy Disc Springs Coils

High-load capacity disc springs for mechanical systems requiring fatigue resistance.

• Material: Vanadium alloy, stainless steel
• Load capacity: Up to 50kN
• ISO 10440 compliant

Metal Seated Ball Valve Fittings Alloys Spring Washers

Ensures bolt preload compensation in high-pressure valve systems.

• API 6D compliant
• Corrosion-resistant coatings
• Custom dimensions available

Elgiloy 3J21 Cobalt Alloy Compression Springs

High resilience springs for aerospace and medical applications.

• Excellent fatigue life
• Non-magnetic properties
• Operating temp: -200°C to +450°C

Corrosion Resistance Inconel 600 Springs

Corrosion Resistance Alloy Inconel 600 Coils Springs

Ideal for marine, chemical, and offshore environments.

• Seawater resistant
• High tensile strength
• Custom winding options

Stainless Steel Wave Washers for Bearings

Compact axial load solutions for bearing preloading.

• Metric & imperial sizes
• Single or multi-turn
• Low deflection, high load

Heavy Duty Helical Torsion Spring

Precision-wound torsion springs for industrial actuators and levers.

• 304/316 stainless steel
• Custom leg configurations
• High cycle life

Tower Stainless Steel Compression Conical Spring

Progressive rate springs for vibration damping and space-limited applications.

• Progressive load curve
• Space-saving design
• OEM customization

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Why Choose Us

We combine engineering excellence with manufacturing precision to deliver reliable spring solutions.

Certified Quality

ISO9001 & ISO14001 certified with strict quality control at every stage.

Fast Delivery

Global logistics network ensures on-time delivery as per contract.

OEM/ODM Support

Full design and manufacturing support for custom spring solutions.

30+ Patents

Innovative designs and proprietary manufacturing techniques.

Frequently Asked Questions

What materials do you use for high-temperature springs?

We use Inconel, Elgiloy, 3J21 cobalt alloy, and other nickel-based superalloys capable of withstanding temperatures up to 600°C.

Can you produce custom spring designs?

Yes, we offer full OEM and ODM services. Share your specifications and we’ll design and manufacture to your exact requirements.

What certifications do you hold?

We are ISO9001 and ISO14001 certified with over 30 national patents in spring technology.

What is your production capacity?

We deliver over 20 million springs annually from our 5,000 sqm facility in Wenzhou, China.

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