Do you provide free samples?

Yes, free samples are available, subject to the company's specific rules regarding sample and value.

What is the minimum order quantity (MOQ)?

The minimum order quantity is 500 PCS.

How is product quality controlled?

All products undergo six checks: material inspection, product inspection, routing inspection, inspection before plating, final inspection after plating, and inspection before delivery.

High Quality Carbon Steel Torsion Spring

Name: High Quality Carbon Steel Torsion Spring
Brand: Yangzhou Mingfeng Spring Co., Ltd.
SKU: 776748925

Jiangsu, ChinaYangzhou Mingfeng Spring Co., Ltd.

US$0.06

10,000 Pieces

Product profile

Customization

Available

Function

Measurement

Material

Stainless Steel

Model NO.

MF166

Usage

Industrial, Auto, Furniture

Load Type

Torsion

Production Process

Hot Roll

Shape

Coil

Wire Diameterl

as Your Reauest

Free Height

as Your Request

Surface Treatment

as Your Request

Professional

More Than 25 Years

Transport Package

Carton

Specification

SGS

Origin

Yangzhou Jiangsu

Production Capacity

2000000 Per Year

Key features

IATF16949 Certified Quality: Meets IATF16949 and SGS standards with 6-step quality inspection process.

Customizable Dimensions: Wire diameter, free height, and outer diameter can be customized as per request.

Diverse Surface Finishes: Available in white zinc, color zinc, nickel plating, chrome-plating, and plastic spraying.

29 Years Manufacturing Experience: Established in 1986 with extensive expertise in spring production and engineering.

High Annual Production Capacity: Capable of producing more than 800 million pieces annually with advanced CNC machines.

Free Sample Availability: Free samples are provided according to company rules to ensure product suitability.

Professional Technical Support: 6 professional technical engineers available with 24-hour response to client complaints.

OEM and ODM Services: Supports full customization, minor customization, and customization from samples or designs.

Company profile

Yangzhou Mingfeng Spring Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤18h

AI-Powered supplier vetting

SummaryThe supplier manufactures and sells springs, mechanical components, vibration and noise-reduction equipment, rubber and plastic products, hydraulic components, and related products. It reports broad customization and ODM capabilities, recent new-product activity, OEM service for recognized brands, and production-related facilities covering winding, grinding, spraying, polishing, and punching. Quality control includes four inspectors and documented finished-product inspection instructions. The supplier states that it maintains written procedures for supplier assessment, corrective and preventive actions, and complaint handling. It has valid manufacturing contracts with associated subcontractors and reports inventory capability, but no overseas warehouse or showroom. Export sales represent 41%–50% of total sales, with Shanghai Port identified as the nearest port and stated lead times of within 15 working days in both peak and off-season. Evidence is insufficient to confirm certifications, detailed...

Supplier typeThe supplier is a manufacturer and seller of springs, mechanical parts, vibration and noise-reduction equipment, rubber and plastic products, hydraulic machinery components, and related equipment. Its registered business scope indicates a multi-product industrial manufacturer rather than a pure trading intermediary.

After-Sales capabilityThe supplier reports clear procedures and followed records for handling customer complaints, as well as documented corrective and preventive action procedures. This supports an established complaint-resolution process, although the slices do not provide response times, service results, warranty terms, or overseas service coverage.

R&D capabilityThe supplier states that it had new products during the past year and provides ODM services, indicating ongoing product-development activity. However, it reports no available SDK, and no details are provided on R&D staffing, patents, laboratories, or development resources.

Production capacityProduction evidence includes dedicated winding, grinding, spraying, polishing, and punching facilities, four quality inspectors, documented finished-product inspection instructions, inventory capability, and valid contracts with associated subcontractors. The supplier also reports lead times within 15 working days in both peak and off-season and describes a strict quality system, but the stated monthly production figure is unclear and cannot support a precise capacity assessment.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM availability, providing direct evidence of broad product-development and customization support.

Client casesThe supplier states that it provides OEM services to recognized brands and has received positive customer recognition from the seal, automotive and motorcycle, mechanical, electrical, electronics, and appliance industries. No customer names, project descriptions, order scope, or independently verifiable case details are provided.

Product Q&A

Q:What is the warranty period?

The product details do not explicitly state a specific warranty period, but the company offers a 24-hour response time for client complaints and ensures quality through a 6-step inspection process.

Q:What materials are used for the torsion spring?

The springs are made from stainless steel, alloy, spring steel, and carbon steel, sourced from reputable iron and steel group companies in Jiangsu and Zhejiang.

Q:Can the spring dimensions be customized?

Yes, the wire diameter, free height, and outer diameter can be customized according to your specific requests.

Q:What surface treatments are available?

Available finishes include white zinc, color zinc, nickel plating, chrome-plating, and plastic spraying. Standard color is silver (Trivalent Zinc Plating), but black, yellow, red, green, and blue are also available.

Q:What is the lead time for delivery?

Normally, the delivery time is 45 days, excluding holidays and special bulk orders. Peak and off-season lead times are within 15 workdays.