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Extension Spring with Hooks on Both Ends
US$0.20-1.00
10,000 Pieces
Sample price:US$80.00/piece.Request sample
Product profile
Customization
AvailableFunction
Pressed, BufferMaterial
SteelModel NO.
DF2103546Usage
Industrial, Auto, Motorcycle, Home ApplianceLoad Type
ExtensionProduction Process
Cold RollShape
CoilProduct Name
Extension Spring with HookBusiness Mode
Factory OEMMaterial Standard
GB 4357-09 or EquivalentWire Range
From Min 0.1mm(0.004inch) to Max 12mm(0.48inch)Winding Direction
Left and RightEnd Type
Different Hooks AvailableSurface Treatment
Trivalent Zinc CoatingCoating Thickness
8~10 MicrometerTesting Method
Random Sample InspectionTolerance
GB Standard, Grade II or as Per Your RequirementSpring Rate Tolerance
+-3%~10%Aql Level
Aql 1.0Packing Method
OPP Bags with Blank CartonNormal Carton Size
23X23X31/Cm with No MarkCertificate
ISO9001, SGS, RoHS, CE, Ts16949Transport Package
Carton and Outer Wooden CaseSpecification
customizedTrademark
DOFOOrigin
Wenzhou, ChinaHS Code
7320909000Production Capacity
1, 000, 000 Pieces Per MonthKey features
Custom Hook Types: Various hooks available including machine loop and crossover loop.
RoHS Compliant Coatings: Trivalent zinc and other coatings meet RoHS environmental standards.
Wide Material Range: Available in carbon steel, stainless steel, music wire, and more.
Design Assistance: Engineers provide CAD/3D design support to lower production costs.
Sample Charge Refund: Sample fees are refunded upon placement of a formal order.
Flexible MOQ: Supports both small quantity and large volume production runs.
Fast Lead Time: Standard springs delivered within 25 days; complex ones in 30-40 days.
ISO Certified Quality: Certified ISO9001, SGS, RoHS, CE, and Ts16949 for quality assurance.
Company profile
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 26 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤0.23h
AI-Powered supplier vetting
SummaryThe supplier is a professional technical supplier with a strong emphasis on research and development, evidenced by their ability to provide 3D software design services and ODM capabilities. They hold several important certifications, enhancing their global competitiveness, but lack overseas warehouse and showroom capabilities. Though they have a comprehensive after-sales service protocol, their financial records over the last three years indicate zero revenues and profits, raising concerns about financial credibility. Their production capabilities are supported by valid contracts and in-stock services, though their presence in overseas markets is limited. They offer extensive customization services and have a structured approach to quality control, but do not handle OEM services for popular brands. Overall, their innovation and customization strengths are notable, yet financial and overseas market limitations may impact their future growth potential.
Supplier typeThe supplier is a professional technical supplier with R&D capabilities and a focus on innovation, having expanded their product range significantly over 20 years of development.
CertificationsThe supplier holds ISO9001, TS16949, ISO140001, OHSAS18001, and BV certifications, indicating a strong compliance and quality management framework.
After-Sales capabilityThe supplier has clear procedures and records for handling customer complaints and corrective actions, along with a quality assurance and traceability framework.
Financial creditThe supplier's financial records show zero operating revenues, costs, and profits over the last three years, indicating significant financial credibility concerns.
R&D capabilityThe supplier demonstrates strong innovation capability with evidence of new product development and ODM services, although they lack SDK availability.
Customization capabilityThe supplier offers extensive customization services, ranging from full to minor and flexible customization, demonstrating strong design and adaptation capabilities.
Client casesThe supplier does not provide OEM services for popular brands, which may limit their exposure to high-profile customer cases.
Product Q&A
Q:Which materials are available and do they meet RoHS?
A:
DoFo Spring manufactures springs from high-grade carbon steel, stainless steel, and music wire, all complying with RoHS standards.
Q:Do you support small quantity orders?
A:
Yes, we manufacture both large quantity and small quantity springs based on your specific demand.
Q:Does DOFO offer design service or assistance?
A:
Our engineers provide initial design assistance, CAD/3D layouts, and prototype development to help lower production costs.
Q:What is the typical lead time for custom springs?
A:
Standard springs are delivered within 25 days, while complex shapes may take 30-40 days.
Q:Do you charge for custom spring samples?
A:
Sample charges are refunded when a formal order is placed, unless an additional mold is required.
Send Inquiry
*To:
Yueqing Dofo Spring Manufacturing Co., Ltd.
Yueqing Dofo Spring Manufacturing Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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