Inner Torsion Springs

US$0.20 - 1.20 / Piece

ISO9001 China Factory OEM Precision Custom Inner Torsion Spring pictures & photos

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What is ISO9001 China Factory OEM Precision Custom Inner Torsion Spring

Name: ISO9001 China Factory OEM Precision Custom Inner Torsion Spring
Uploaded: 2025-11-06T14:59:24+08:00
Description: Product Description ISO9001 China factory OEM precision custom inner torsion spring Oil-tempered springs are made of high carbon steel wires, which are filtered through a sequence of dies until the pr

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Price

Min. Order Reference FOB Price

10,000 Pieces US$0.20 - 1.20 / Piece

Sepcifications

Function Pressed, Buffer
Material Alloy
Usage Industrial, Auto, Motorcycle, Home Appliance
Load Type Torsion
Production Process Cold Roll
Shape Coil
Transport Package Carton and Outer Wooden Case
Specification customized
Trademark DOFO
Origin Wenzhou, China
Product Name Inner Torsion Springs
Business Mode Factory OEM
Material Standard GB 4357-09 or Equivalent
Wire Range From Min 0.1mm(0.004inch) to Max 12mm(0.48inch)
Winding Direction Left and Right
End Type Customized Shapes Available
Surface Treatment Black Oxide
Coating Thickness 8~10 Micrometer
Testing Method Random Sample Inspection
Tolerance GB Standard, Grade II or as Per Your Requirement
Spring Rate Tolerance +-3%~10%
Aql Level Aql 1.0
Packing Method OPP Bags with Blank Carton
Normal Carton Size 23X23X31/Cm with No Mark
Certificate ISO9001, SGS, RoHS, CE, Ts16949

Product Description

Product Description ISO9001 China factory OEM precision custom inner torsion spring Oil-tempered springs are made of high carbon steel wires, which are filtered through a sequence of dies until the proper thickness and shape are achieved. The spring is then run through a series of heating cycles ...

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Yueqing Dofo Spring Manufacturing Co., Ltd.

Diamond Member Since 2020

Audited Supplier

Business Type Manufacturer/Factory & Trading Company
Main Products Compression Spring, Extension Spring, Automotive Parts Spring, Torsion Spring, Stainless Steel Spring, Trampoline Spring, Alloy Steel Spring, Switch Spring, Mining Machine Spring, Disc Spring
Number of Employees 97
Year of Establishment 1999-05-27
Management System Certification ISO 9001, ISO 14001, OHSAS/ OHSMS 18001, IATF16949
Average Lead Time Peak Season Lead Time: one month
Off Season Lead Time: one month

Inner Torsion Springs Comparison

	ISO9001 China Factory OEM Precision Custom Inner Torsion Spring Contact Now	Quick View Counterbalance Springs From Concept to Creation Bosswinn Spiral Springs Power Your Success Contact Now	Quick View Premium Nickel Alloy Spring for Heavy-Duty Applications and Durability Contact Now	Quick View Strength and Durability You Can Rely on – Bosswinn Tension Springs Contact Now	Quick View Lockable Gas Spring for Medical Bed Emergency Stretcher Contact Now

Transaction Info
	ISO9001 China Factory OEM Precision Custom Inner Torsion Spring Contact Now	Quick View Counterbalance Springs From Concept to Creation Bosswinn Spiral Springs Power Your Success Contact Now	Quick View Premium Nickel Alloy Spring for Heavy-Duty Applications and Durability Contact Now	Quick View Strength and Durability You Can Rely on – Bosswinn Tension Springs Contact Now	Quick View Lockable Gas Spring for Medical Bed Emergency Stretcher Contact Now
Price	US$0.20 - 1.20 / Piece	US$1.00 / Piece	US$5.00 - 10.00 / Piece	US$0.988 / Piece	US$0.87 - 1.73 / Piece
Min Order	10,000 Pieces	10,000,000 Pieces	10 Pieces	10,000,000 Pieces	50 Pieces
Payment Terms	LC, T/T, D/P, PayPal, Western Union, Small-amount payment	LC, Western Union, Small-amount payment, PayPal, D/P, T/T	LC, T/T, D/P, PayPal, Western Union, Small-amount payment	LC, Western Union, Small-amount payment, PayPal, D/P, T/T	LC, T/T, D/P, PayPal, Western Union, Small-amount payment
Quality Control
Product Certification	ISO9001, SGS, RoHS, CE, Ts16949	-	-	-	-
Management System Certification	-	-	-	-	Others
Trade Capacity
Export Markets	Southeast Asia/ Mideast, Australia	Europe	North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe	Europe	North America, South America, Europe, Southeast Asia/ Mideast, Mid East
Annual Export Revenue	-	-	-	-	-
Business Model	ODM	Own Brand, ODM	ODM, OEM	Own Brand, ODM	-
Average Lead Time	Peak Season Lead Time: one month Off Season Lead Time: one month	Peak Season Lead Time: one month Off Season Lead Time: one month	Peak Season Lead Time: one month Off Season Lead Time: one month	Peak Season Lead Time: one month Off Season Lead Time: one month	Peak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays
Product Attributes
Specification	Function: Pressed, Buffer; Material: Alloy; Usage: Industrial, Auto, Motorcycle, Home Appliance; Load Type: Torsion; Production Process: Cold Roll; Shape: Coil; Product Name: Inner Torsion Springs; Business Mode: Factory OEM; Material Standard: GB 4357-09 or Equivalent; Wire Range: From Min 0.1mm(0.004inch) to Max 12mm(0.48inch); Winding Direction: Left and Right; End Type: Customized Shapes Available; Surface Treatment: Black Oxide; Coating Thickness: 8~10 Micrometer; Testing Method: Random Sample Inspection; Tolerance: GB Standard, Grade II or as Per Your Requirement; Spring Rate Tolerance: +-3%~10%; Aql Level: Aql 1.0; Packing Method: OPP Bags with Blank Carton; Normal Carton Size: 23X23X31/Cm with No Mark;	Function: Restoration, Measurement; Material: Steel; Usage: Industrial, Furniture; Load Type: Torsion; Production Process: Cold Roll; Shape: Coil; Logo: Customized; OEM, ODM: Accepted; Suface Treatment: Customized; Certificates: Apply as Per The Buyer's Order;	Function: Pressed, Phonation, Buffer, Drive, Restoration, Measurement; Material: Nickel Alloy; Usage: Industrial, Auto, Furniture, Home Appliance; Load Type: Compression; Production Process: Cold Roll; Shape: Coil; Density: 8.19 G/Cm³,0.296 Lb/in³;	Function: Phonation, Drive, Restoration, Measurement; Material: Steel; Usage: Industrial, Auto, Motorcycle, Home Appliance; Load Type: Extension; Production Process: Cold Roll; Shape: Conical;	Function: Pressed, Phonation, Buffer, Drive, Restoration; Material: Steel; Usage: Industrial, Auto, Furniture, Motorcycle, Home Appliance; Load Type: Compression; Production Process: Cold Roll; Shape: Cylinder; Tube: Spray; Connector: Zinc Plating; Piston Rod: Carbonized; Color: Black;
Supplier Name	Yueqing Dofo Spring Manufacturing Co., Ltd.	Zhuji Bosswinn Springs Co., Ltd.	Taizhou Haosai Special Alloy Co., Ltd.	Zhuji Bosswinn Springs Co., Ltd.	Maanshan Vantrans Machery Co., Ltd.
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