Wholesale Hot Selling Custom Compression Spring for Umbrella High Precision Stainless Steel 304 Compression Springs

Product Description

Wholesale hot selling custom compression spring for umbrella high precision stainless steel 304 compression springs     

Zihuoli manufacturer, supplier and exporter a qualitative range of Coil Springs. Coil springs are precisely engineered using latest machinery at our well-equipped infrastructure. Zihuoli offer these Coil Springs various types of material sections like flat, square, round and rectangular. 

Wire Diameter	0.1 to 18mm
Material	Stainless steel, Carbon steel,music wire/piano wire,Beryllium copper, Brass, Alloy steel,etc
Surface Treatment	Zinc-plated, nickel-plated, chrome-plated, gold-plated, Imitation gold-plated, Tin, Powder coating, Oxide black or customized, etc
Main Products	Compression Spring, Extension Spring, Torsion Spring, Wire Forming Spring, Stamping Parts and so on
Packing	Inner packing with plastic bags, and then carton boxes for the outer packing, and then the wooden or plastic pallets for request
Produce Equipment	Advanced CNC Spring machinery; Advanced grinding and short blasting machinery; Precise tensile strength testers, compression testers, endurance testers, magnetic powder flaw detectors
Test Equipment	Projectors; Digital hardness tester; Digital torsion strength tester; Digital compression and torsion strength tester; Elasticity tester; Life tester; Salt spray test machine etc.

What is Compression spring?

Compression Springs are open-coil helical springs wound or created to oppose compression along the axis of wind. Helical Compression is the most typical steel springtime arrangement. These coil springs can function individually, though commonly assembled over a guide rod or equipped inside an opening.

Typical Compression Spring Design Terms

According to the Spring Manufacturers Institute Handbook of Spring Design, commonly used compression spring terminology includes the following:

Wire diameter (d)
Outside Diameter (O.D)
Inside Diameter (ID)
D coil diameter =Outside Diameter. (O.D. + I.D.)/2 or O.D. - d 
Free Length = The total length of a compression spring when it is unloaded.
Pitch (P )= the distance between the wire centers in adjacent active coils. It is best practice to specify the number of active coils rather than the pitch.


Compression Spring Materials
Zihuoli Spring custom compression springs from a variety of materials. Music wire, hard drawn, stainless steel (type 302, type 316), oil tempered, chrome silicon, and phosphor bronze are the most common material types for compression springs. We also make compression springs out of more exotic materials like Inconel, Monel, Beryllium Copper, and others.
In order to provide our customers with the shortest lead times possible, we stock several of these material types in various diameters.
Compression spring materials that are commonly used include:
•      Carbon Steel
•      Stainless steels
•      Alloy steel
•      Copper Base Alloy
•      Nickel Base Alloy
•      Cobalt-Nickel
•      Titanium

Zihuoli Springs Capability for Different Compression Spring Body Shapes
There are four different body designs for compression springs are produced by Zihuoli Spring.

1. straight cylindrical compression spring
2. Conical or tapered compression springs, 
3. barrel compression springs, 
4. hourglass compression springs,

FAQ

1.Why you choose us?
We have 14 years experiences in producing springs. We have our own factory, warehouse, machines, test equipment, engineers, rigorous QC and good service.  

2.Do you offer custom service?
Yes, it's our job, send us your specification or drawings, and we will make you perfect products. Or tell us your idea for
getting a design from us.            
                                                               
3. Could I ask for samples before the bulk production? 
Why not, we all concern the quality, and it's the way to get rid of getting poor quality.      
                                                     
4.What is your min order quantity?
Normally, our minimum order quantity is 10,000pcs. The quantity can be flexible. 
We also accept small order, we understand that some customers only need small qty at begin. 

5. What's your term of payment?
We support TT payment/Paypal/Weston union/Moneygram. Payment ≤1000USD,100% in advance. Payment≥1000USD,30% in advance, balance before delivery.

6. How about your packing of spring?
PE Bags+ Carton, or can be customized packing depends on your order qty and requirements.