Tianjin Longdong Coil Spring Source Factory

1. Cost Advantage: No Markups from Intermediaries

Direct production and sales eliminate price surcharges from distributors and wholesalers. With the same materials and craftsmanship, procurement costs can be reduced by 15% to 30%. Tiered pricing is available for bulk orders to effectively cut clients’ total procurement expenses for spare parts.

Centralized Raw Material Procurement for Cost Control

We source steel wires directly from steel mills, including manganese steel, 60Si2Mn spring steel, 304/316 stainless steel and alloy spring steel. Large-volume bulk purchases lower raw material unit prices, with the savings fully passed on to buyers.

Self-absorbed Production Losses

All scrap materials and trial production losses are borne by our factory and never factored into order unit prices, delivering superior cost performance for long-term bulk procurement.


II. Custom R&D Capabilities

Full-range Non-standard Customization

Reverse design is available based on drawings, physical samples and actual working conditions. We manufacture compression springs, extension springs, torsion springs, conical coil springs, variable-pitch special-shaped springs, ranging from ultra-precise micro springs with 0.08mm wire diameter to heavy-duty industrial springs up to 20mm wire diameter.

Pre-sales Technical Support by Professional Engineers

Our technical team provides early-stage model selection service: calculating spring force, coil count, outer diameter, compression stroke and fatigue load, optimizing structural design to prevent spring fracture, elastic force degradation and jamming during assembly. We deliver one-stop elastic component solutions.

Flexible Order Quantity

Fast sampling for small-batch orders (dozens or hundreds of PCS), stable mass production up to millions of pieces. Tooling charges can be amortized against large orders to lower clients’ R&D and trial costs.

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