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extension spring

Upload Date: 2017-12-25 - 【Back

extension springs, also called tensile springs, are found in many applications, such as common household products,snow plows, garage doors and various types of spring tensioning devices.

Extension springs have hooks on their ends to attach them to the application. Various hook styles and configurations are available depending on the particular application.Unlike compression springs, extension springs do not have a solid stop to prevent overloading. For these reasons,design stresses are generally lower for extension than compression springs.

1Wire diameter: 0.08mm-7mm

2Technical norms:  we produce springs according to customer’s
requirements including spring drawings or qualified samples.

3Surface treatment:  blackening, zinc plated, nickel plated, gold
plated, silver plated, electrophoresis,
 Dacromet and so on.

4Materials:

  Stainless steel: SUS301SUS302SUS303SUS 304SUS305SUS 309SUS310SUS 316SUS321SUS 403SUS410SUS 420SUS430SUS630SUS631

   Carbon steel(SWC): 60SizMNA60SizCRVA55CrSi and so on.

   Music wireSWPASWPB

   Copper wirephosphorus Cooper wiretinned wirenickel-coated copper wirebronzeBecu  and so on.

   resistance wire

5Delivery date: 5-7 days (transportation time is not included). For the urgent orders, we have our urgent procedure to make sure deliver our goods ASAP.

6Samples making:  The sample fee is required but it will be returned in full if we cannot meet the customers’ requirements. After a certain amount of order, the samples fee may offset thepayment of the goods.


Loomee Spring (shanghai) Co., Ltd.
Add:No.228 Jingle Road Langxia Town Jinshan District Shanghai China
Tel:+86-21-51602092
Fax:+86-21-51602092
E-mail:info@loomeespring.com

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