High Precision Black Coated Heavy Duty Double Loop Ends Extension Stretch Spring for Garage Door

• Customization: Available
• Function: Pressed, Phonation, Buffer, Drive, Restoration, Measurement, Customized Hardware Metal Parts
• Material: Stainless Steel
• Model NO.: LH
• Usage: Industrial, Auto, Furniture, Motorcycle, Home Appliance, Garage Door Springs Replacement
• Load Type: Extension
• Production Process: Cold Roll
• Shape: Coil
• Sevices: OEM ODM
• Advantage: 3400 Square Meters Factory
• Spring: 20 Computerize Spring Machines
• Wire Forming: 6 Bending Wire Forming Machines
• CNC: 8 CNC Machines
• Stamping: 15 Stamping Machines
• Support: Customized Spring
• Transport Package: Plastic Bag + Outer Carton
• Specification: diameter 0.2-40 mm
• Trademark: BAISHUN or OEM
• Origin: Zhongshan and Dongguan, Guangdong, China
• HS Code: 730209000
• Production Capacity: 5000000/Year
• Package Size: 65.00cm * 5.00cm * 5.00cm
• Package Gross Weight: 1.500kg

Product Description

Extension springs

Extension springs are helical springs that bear axial tension. They are generally made of circular cross-section materials. When not under load, the coils of the extension spring are generally tight and there is no gap between them. When the two ends of the extension spring are pulled apart, the spring will try to pull them back together to absorb and store energy.

Extension springs, also known as helical Stretch Springs, are generally of equal pitch and circular cross-section. They can be used in many occasions, such as medical respiratory equipment, motion control, medical mobile equipment, hand tools, home care equipment, shock absorption, pump springs, mechanical and electronic protective hardware, fluid control valves, mechanical aerospace components, actuators, and switch equipment.

Specification

We customize springs with the material & size you specify, please tell us:

           Spring Type: Tension Spring

     

                Material:

                Surface treatment:

                Wire Diameter:

                Spring Diameter:

                Free Length:

                Active Coils:

                Total Coils:

                End Type:
                Direction of Wind:

                 .........

Material	Iron	A36, 45#, 1213, 12L14, 1215 etc.
	Stainless Steel	SS304,SS304L, SS316, SS316L,SS201,SS301,SS303,SS430,SS439, etc.
	Aluminum	AL6061, Al6063, AL6082, AL7075, AL5052 etc.
	Copper	C10100,C10200,C11000,C12000,C12000, C36000 etc.
	Brass	HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90 etc.
	Steel	Mild Steel, Carbon Steel, 4140, 4340, Q235, Q345B, 20#, 45# etc.
	Spring Steel	70# steel,1075,65MN,T9A., 17-7ph, etc

Surface Treatment	Steel	Zinc Plating, Oxide Black, Nickel Plating, Chrome Plating, Powder Coated, Electrolysis, electro painting,sliver plating, golden plating,polish etc
	Aluminum	Clear Anodized, Color Anodized, hard color anodized,Sandblasted Anodized, Brushing,Polishing, power coating,brushed
	Stainless steel	Polishing, Brushed,Passivating, Sandblasting, Laser Engraving

Other Products We Produce

Compression spring

Torsion spring

Constant force spring

Wave spring

Spring clip

CNC parts

Wire forming products

Stamping parts

Company Profile

Baishun Hardware Manufacturing Co., Ltd. 

Experts' Choice

Located in the "China Hardware Products Industry Base" - Xiaolan Town, Zhongshan City, Guangdong Province, Baishun Hardware has been deeply involved in the field of precision manufacturing for more than 20 years. It is a modern manufacturing enterprise integrating R&D, production and sales. With ISO9001 international quality system certification and intelligent production management system, it continues to provide high-precision hardware solutions for customers worldwide.

Professional fields

Quality commitment

Win-win cooperation

√ 3D Wire bending
√ High-precision Spring
√ Metal Stamping
√ CNC workshop

"3M quality management system":
Material / Machining / Measurement
"5S enterprise management method":
Seiri / Seiton / Seiso / Seiketsu / Shitsuke

Fast proofing of drawings/samples
Small batch production
Professional solutions

Advantages

√ Intelligent manufacturing:

    equipped with 3D wire forming machines, computer spring machines, stamping production lines and CNC machining centers
√ Industry-leading laboratories:

   spring torsion/tension and compression testing machines, salt spray tests, precision hardness testers and other testing equipment       to ensure that products pass industry standards and customer-specific requirements
√ one-stop service:

   from mold design, production to surface treatment

We sincerely invite global partners to visit the factory

Let us work together to create more good & competitive hardware products!

FAQ

Q1: Can I custom made my products?
A: Yes. We provide the OEM ODM services.
     You can provide drawings or samples, we can produce them accordingly. Or you tell us your idea, we create a design drawing.

Q2: What is the MOQ?
A: If the products you want are what we are producing or in stock, it is quick delivery and no MOQ.
    If you want to custom, also no MOQ, just different prices for different quantity.
 
Q3: How do I know your quality?
A: Through pictures, videos, customer reviews, or we can send you samples.
 
Q4: How long will it take for me to get a price?
A: We will respond within 1 hour from Monday to Saturday.
 
Q5: How long is the delivery time?
A: Regular items are shipped within 7 days. Customized products normally 10-30 days accordingly.
 
Q6: Why choose us?
A: We are a leading manufacturer with over 20 years of experience in customized metal parts.
     We have wire forming department, computerized spring department, stamping department, CNC department,

             welding department, QC and tools modes department, ect.
     We focus on creating high quality, durable, reliable hardware accessories to meet your unique specifications.
 
Q7: How do I place an order?
A: Just contact us, send inquiry or email/call us.