Extension Springs
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Small Extension Springs For Sale - Heavy Duty Extension Springs

Extension spring is tightly coiled and designed to resist stretchy force. We produce variety of extension springs as per requirement and demand of the customers. DoFo Springs gives top priority to aspect of quality and adheres with parameters in stringent manner. Our springs are produced with different ends to meet the exact requirement of customer. All our small extension springs and heavy duty extension springs are extensively tested prior final delivery to the customer. For the information of layman, extension springs are attached at both the ends of any component. The spring tries to stop any movement in component by trying to pull them together. Heavy duty extension springs are designed to support considerable amount of load in a mechanism. Heavy duty extension springs are required in agricultural equipment, construction machines, industrial equipment and oil field equipment. We supply small extension springs and heavy duty extension springs as per specific demand of customer. At, DoFo Springs, we take utmost care about the quality of raw material. Only high grade carbon spring steel is used in manufacturing. We comply with all international standards including the European ROHS standard. Our products including whether small extension springs or heavy duty extension springs, have considerable lifespan. The immense production capacity of DoFo Springs allows it to fulfill gigantic orders. You search regarding a dependable source of tension springs for sale comes to an end after approaching DoFo Springs. Our name is taken with great respect for supplying quality extension springs of various sizes and capacities.

DoFo Supply Chain:

Material: High Grade Spring Steel - Carbon steel - Stainless steel – Music Wire, all comply to the RoHS standard.

Wire Diameter Range: from 0.2mm to 19mm (0.001inch~0.75inch)

Tolerance: Actual manufacturing tolerances will depend on the spring specifics. Usually, we follow the tolerance according to the standard of “GB1239.3-89, Grade 2” in China.

Customized Hook Types End Treatment: straight hooks, D loop hooks, three quarter loop hooks, extended loop, extended reduced loop, reduced loop, short swivel eye, long swivel eye, swivel bolt

Surface Treatment Available: Prevent Rust oil, Black-dyeing, Paint drying, electrophoresis, Electroplating, zinc plating, Nickel plating, chrome plating, galvanization, passivation, ultrasonic washing, phosphorization, dacromet, teflon coating, environmental protection plating with ROHS test, salt spray test, etc.