· Product Overview

· Core Specifications

• Material: 304 Stainless SteelOffers excellent corrosion resistance, moderate tensile strength, and compatibility with general industrial/household applications.
• Manufacturing Standard: ISO 9001-Certified Spring Fabrication Process
  • Key Processes: Cold spring winding (for uniform coil geometry), precision loop forming (to ensure mount compatibility), heat tempering (to stabilize tension and fatigue resistance), and surface passivation (to enhance corrosion protection).
  • Tolerances: Wire diameter ±0.05mm, free length ±1.0mm, tension force ±5% (at specified stretch length).

· Application Scenarios

• Industrial Equipment: Conveyor belt tensioners, door latch mechanisms, and packaging machine retraction components.
• Automotive Systems: Hood/trunk latch springs, seat adjustment tensioners, and interior panel fasteners.
• Household & DIY Projects: Garage door hardware, tension-based tool accessories, and custom furniture hinges.
• Medical Devices: Small retraction parts in diagnostic tools or patient monitoring equipment.
• Electronic Enclosures: Panel latch springs for industrial control boxes or consumer electronics casings.

· Production Process Introduction

1. Raw Material Preparation: Source 304 stainless steel wire with consistent diameter (matched to target spring specs).
2. Cold Spring Winding: Use automated winding machines to form uniform coils to the specified free length.
3. Loop Forming: Shape dual end loops (via precision tooling) to ensure secure attachment to mounting hardware.
4. Heat Tempering: Temper the springs in a controlled oven to set tension and improve fatigue resistance (critical for repeated use).
5. Passivation: Apply a chemical surface treatment to enhance the stainless steel’s natural corrosion resistance.
6. Quality Inspection: Test tension force (via spring dynamometers), verify dimensions, and check loop integrity to meet spec requirements.

· Packaging and Shipping Methods

• Packaging: Individual springs (or pairs) are sealed in anti-scratch, anti-rust plastic bags; bulk orders are packed in padded cartons with partitioned layers (to prevent spring deformation during transit).
• Shipping: Flexible options:
  • Express Delivery (DHL/FedEx/UPS: 3–5 business days)
  • Air Freight (7–10 business days)
  • Sea Freight (20–30 business days)All shipments include full tracking and damage insurance.

· Process

· Frequently Asked Questions (FAQ)

• MOQ (Minimum Order Quantity): 100 pieces per spring specification; small sample packs (10–20 pieces) are available for performance testing.
• Lead Time: Standard lead time is 7–10 working days after order confirmation; expedited production (5–7 working days) is available for urgent orders (additional fees apply).
• Customization Capability: Full customization is supported—we can adjust wire diameter, free length, loop style, and tension force based on your technical drawings. Our engineering team will validate design feasibility for production.