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Description
Tension springs (also called tension springs, referred to as tension springs) are helical springs that support axial tension. Tension springs are generally made of circular cross-section materials. When no load is applied, the coils of the tension spring are generally tight without gaps.
Tension springs are mainly used in medical breathing equipment, motion control, medical mobile equipment, hand tools, home care equipment, shock absorption, pump springs, mechanical and electronic protective hardware, fluid control valves, mechanical and aerospace components, actuators, switches device.

Parameter of spring parts
product name | Tension springs,hooks |
OEM/ODM | available |
Wire diameter or thickness | 0.07mm~20mm |
Finishing | electroplating, spraying, electrophoresis, anodizing, spraying, powdering, heat treatment, black oxide layer, anti-rust oil, etc. |
Advantages | high quality, competitive price, first-class automatic production equipment, safe packaging and timely delivery. |
Applications | Precision equipment, electronics, toys, door locks, mechanical equipment, various vehicles. |
Packing | Plastic packaging inside, and then packed in cardboard or wooden boxes. Or customize the packaging according to your requirements. |





Information to be provided for processing customized springs
1. Provide the necessary parameter information of the spring, wire diameter (the diameter of the spring wire), outer diameter (the diameter of the outer circle of the spring), length (including the total length of the spring of the hook), and the number of turns (the effective number of springs or the number of turns)
2. Provide technical requirements for springs
Direction of rotation (left / right), material (spring material), surface treatment (blackening / galvanized / electrophoresis / painting), strength requirements (elastic performance), end form (and tight / smoothed / and tightly flattened )
Package&shippment
Delivery can be by DHL , USP , TNT, or according to customers' requirements.
Our company aims at the value of integrity, mutual sharing, win-win and innovation, we are willing to provide customers with high quality China Garage Door Hardware Extension Springs with Diiferent Hooks at reasonable price! Respecting each person's individuality, giving full play to each person's strengths, and realizing each person's value are our values in talent development. We care about every steps of our services, from factory selection, product development & design, price negotiation, inspection, shipping to aftermarket.

