Extension spring factory

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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OEM ODM extension spring

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

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:Will the embedded stove why use stainless steel corrugated hose connection?: Do not open the window, enjoy the fresh air 24 hours a day, to ensure adequate ventilation (hourly indoor air replacement 0

Q:Rigid pipes differ from flexible piping, those are rigid pipes that are flexible piping: Can be made of polystyrene particles by the pre-die into the steam completely foam self-adhesive after the formation of foam block through the line to form a polystyrene board

Q:Is the flexible sleeve of the broken wall used as a second retest?: The national standard is 18kg. Color steel sandwich panel is a common product in the current building materials, do not chu chu dumpling seal festival over the extinguished Long can only be a good flame retardant and environmentally friendly and efficient. Caigang sandwich board has two layers of metal panels and the middle of the polymer core insulation from the suppression. With the installation is simple, light and efficient light and efficient features. And the filling system used to close the molecular structure of the closed, you can put an end to the condensation of water vapor.

Q:Steel Reinforced (HDPE) Polyethylene Helical Corrugated Tubes Warm-Fused-Belt Is Connected or Bonded with Rubber Rings? Ask what?: Flexible waterproof casing is generally suitable for pipes through the walls by vibration or tight waterproof requirements of the structure; rigid waterproof casing is generally applicable to the pipeline through the walls of the requirements of the general waterproof structures; flexible and rigid waterproof casing Wall of the wall, in case of non-concrete should be used instead of concrete walls, and must be a solidification of the casing in the wall; waterproof casing in the construction, chemical, steel, water, sewage treatment and other units

Q:Where there are wear-resistant tube, high temperature ceramic tube: . different fire rating: Yanmian sandwich panels for the A-level, EPS for the B3-class, polyurethane B1 level. . different insulation properties: the three polyurethane sandwich panels the best. . waterproof performance is different: the three polyurethane and EPS better than rock wool. . the density of different: rock wool bulk density is generally 120KG / cubic meter, EPS is generally . the polyurethane is generally 40. In short, the overall performance of polyurethane sandwich panels try to catch the pole to make the best words, Building Enclosure Best! I have a number in my profile

Q:What materials are made of flexible pipes? Why should the mechanical ventilation set the flexible tube? Where should I be located?: It is recommended to use the home of the heart of the card to worry about toughness to fill the joints, and then paste the seam (master understand) if directly in the sandwich panel (plate) on the batch of putty powder or spray painted really easy to drop off the phenomenon of stone, the first primer, it is recommended to use the home of the German brand brackish scraping scraping again There are), to be dry and then approved scraping putty powder spray really stone paint

Q:Talk about the class flexible management of the class teacher what the requirements: metal hose diameter generally from 5mm to 100mm

Q:What is the difference between a flexible pipe and a rigid pipe? What types of pipes are used for drainage pipes, heat pipes and gas pipelines?: However, these three tubes have good seismic performance, strong sealing, construction is simple, easy maintenance, the use of reliable and so on, it is also known as the cast iron pipe Which W-type cast iron pipe is subdivided into W-type cast iron pipe and W1-type cast iron pipe, the main difference between the two is the difference between the wall thickness, because the difference between the north and south temperatures, the northern cold weather on the pipe requirements higher , So in general W-type cast iron pipe is mainly used for the north, and W1-type cast iron pipe is mainly used for the South side

Q:What is the difference between the D-LD2000 clamp-type flexible fittings and the KRJ-type clamp-type flexible fittings?: Models according to the requirements of various manufacturers to prepare, the general rules of the metal hose coding is the enterprise name code + hose diameter + hose diameter + single button or double buckle code, such as AL0406D said the metal tube production of single-button type 4mm outer diameter 6mm metal hose Metal hoses are characterized by: metal hose between the pitch flexible; metal hose has a good scalability, non-blocking and stiff; metal hose light weight, caliber consistency is good; Metal hose softness, repeat bending, good flexibility; metal hose corrosion resistance, high temperature resistance is good; metal hose anti-rat bite, wear and tear, to prevent the internal wire wear; Metal hose flexible bending, tensile properties, anti-lateral pressure strong; metal hose soft and smooth, easy to threading installation positioning; metal hose Product Application: for a variety of equipment signal lines, transmission wire and cable, fiber Cable protection armored cable, precision optical ruler, optical measuring instruments, medical equipment, machinery and equipment with the wire protection tube; for public telephones, remote meter, Menci alarm and other needs of the wire security equipment ; a variety of small wire protection tube; a variety of computers, robots and so on the network line protection tube

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