The steel spool's requirements for quenching temperature is different according to the different raw materials. Our company provides the following materials for reference.

Machining proces

Product advantages

(1)with good metal retraction and dense and the mechanical properties. Centrifugal casting roughcast will not be cracks, scum stoma and sandstone in its inner and outer surface

(2) The sleeve increased plasticity and toughness after quenching & tempering, and Improve yield strength and tensile strength, reduce elongation.

(3)Use the special tool to process end face, taper and the outer circle according to inner hole to ensure beating of the taper, the concentricity and cylindricity of the steel spool.

Why choices us?
 

• In China, we have more than 13 years of experience in processing foreign companies for foreign companies.
• China manufacturer in Qingdao,not trade company
• Competitive price and nice service
• ISO/SGS passed
• Application: Automotive,medical device, electronics, toy, furniture, industrial etc.

Our Products:

1. auto parts, classic car parts

2. machine parts, pump body housing, engine parts, cylinders, pistons, transmission housing.

3. cookware parts, kitchen ware parts.

4. medical equipment parts, housing, instrument housing, I beam, housing...etc. 

5. Bicycle and motocycle parts, sport equipment parts, housings, covers, heat sinks.

Our Policy:

Innovation and developing in Technique

High level of expertise

Outstanding quality

On-time delivery to customer needs

FACTORY SHOW:

PACKAGE:

Transport:  

SERVICE:

FAQ:

1. Are you a factory or a trading company?

 A: We are a factory which has been specialized in cnc machining & automatic manufacturing for more than 14 years.

 2. Where is your factory and how can I visit it?

 A: Our factory is located in Qingdao city and you can get more detailed information by browing our website:  http://qdyinxiao.en.made-in-china.com or Visit us in person.

 3. How long can I get some samples for checking and what about the price?

 A: Normaly samples will be done within 3-7 days (automatic machining parts) or 7-10 days (cnc machining parts). The sample cost depends on all information (size, material, finish, etc.). We will return the sample cost if your quantity is good.

 4. How is the warranty of the products quality control?

 A: We hold the tightend quality controlling from very begining  to the end and aim at 100% error free.