OEM ODM extension spring

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1. Spring Specification

Dimension:

1. Spring Type: Extension spring.

2. Material: high carbon spring steel; music wire; stainless steel(SUS301,302,304,316,201,202);alloy steel(60Si2MnA,55CrSi,50CrV,60SiCr8A);copper wire ,iron wire ,

3. Wire Diameter: 0.1-65.0mm

4. Surface treatment: become black, Zinc/ Nickel/Silver/Golden/Tin plated ,polishing ,anti-rust oil, passivation ,powder coating, shot blasting

5. Certification: ISO9001:2000, ROHS

6.Packing :Inner plastic bags and outer cartons ,shipping with plastic pallet

7.OEM and ODM is accepted.
Can made by your drawings, sample and dimension

9. Advantage: Good hardness, resistance, durable.

10. Payment:T/T, Western Union, Paypal.

11. MOQ: 5000pcs

12. Delivery time: 7-15 days after receiving your payment.

13. Application: Widely used in automobiles, motorcycles, electrical appliances, telecommunication, craft, toys ,locks,stationery,furiture ,washing machines,vacuum cleaners,lamps and lanterns,bicycles,sports equipment ,etc

Formula:

1) OD=ID+d (OD: outside diameter; ID=inside diameter; D_m=mean diameter; d=wire diameter)

2) F=Gd⁴*f/8D_m³N_act(F= load; G=gravity; f=deflection; N_act=active number of coil)

3) F'=F/f (F'=Spring rate)

Dimension:
Spring Type	Extension spring.
Load Type	Compression
Material	high carbon spring steel; music wire; stainless steel(SUS301,302,304,316,201,202); alloy steel(60Si2MnA,55CrSi,50CrV,60SiCr8A); copper wire ,iron wire
Wire Diameter	0.1-65.0mm
Surface treatment	become black Zinc/ Nickel/Silver/Golden/Tin plated polishing anti-rust oil passivation powder coating shot blasting
Type of Loops	Crossover Loops Double Twisted Loops Extended Loops Full Loops On the Side Full Loops Over Center Machine Full Loops Machine Half Loops Double Full Loops . Etc
form of ends	open / closed / ground or not
Certification:	ISO9001:2000, ROHS
Packing	Inner plastic bags and outer cartons ,shipping with plastic pallet
OEM&ODM	OEM and ODM is accepted. Can made by your drawings, sample and dimension
Advantage	Good hardness, resistance, durable，high fatigue strength
Payment:	T/T, Western Union, Paypal.
MOQ	5000pcs or according to your requirement
Delivery time:	7-15 days after receiving your payment.
Application	Widely used in automobiles, motorcycles, electrical appliances, telecommunication, craft, toys ,locks,stationery,furiture ,washing machines,vacuum cleaners,lamps and lanterns,bicycles,sports equipment ,etc
Formula:
1) OD=ID+d (OD: outside diameter; ID=inside diameter; D_m=mean diameter; d=wire diameter)
2) F=Gd⁴*f/8D_m³N_act(F= load; G=gravity; f=deflection; N_act=active number of coil)
3) F'=F/f (F'=Spring rate)

2. Packing

Inner plastic bags and outer cartons, shipping with plastic pallet

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Q:Safety evaluation: gas pipeline and discharge pipe should not be set between the valve, what is the specification of which provisions?: 028W / MK) and enduring excellent insulation and compression performance, compressive strength up to 220-500Kpa

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Q:CAD type too much (including civil engineering, interior spring design, motor, machinery manufacturing and many other), a beginner how to choose?: The concrete structure has been included in the structure, but the concrete structure is a concrete structure, but the structure is just a frame structure without concrete structure; another steel structure and concrete structure is a good idea but to do Less, the third floor is said to be the main structure of the original structure, masonry works using concrete, then this will undoubtedly increase the cost of the house, if not very high floor or earthquake area is clearly not economical

Q:Is the clamp type flexible connector connected to the pipe to the rubber pad?: See the situation, the general 3 percent or so, to see how the management of LZ, hand thank you

Q:Can the kitchen sewage pipe pass through the walls of the stove wall?: scaffolding pole base with the height must be high longitudinal bar to the lower extension of the two spans and pole fixed height difference should be 1m by slope slope of the vertical axis of the slope should be 500mm single, double Row scaffolding bottom step should be 2m single row, double row and full of scaffolding stand in addition to the top of the top step outside the other layers of each step must be connected with the fastener scaffolding pole connection, lap should be consistent with the column Provisions: the use of connecting rods should be staggered with two adjacent rods should be arranged to set the synchronization within the synchronization within the separation of the two-phase separation of the distance from the distance to 500 mm; each connected to the main node the use of lap joint lap joint should be at 1m and should be used less than 2 rotating fasteners fixed end fastener cover edge to the rod end distance should be 100mm scaffolding Pole top rail bar should be high wall end 1m should eaves mouth 15m

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