2. Process of making
 

3. Raw material guarantee

The company has been cooperating with domestic and foreign first-line brand material suppliers for a long time, and has a strict quality control and performs regular audits and inspection of the factory (elemental analysis, metallographic analysis, ultrasonic flaw detection, etc.) to ensure a 100% qualified status.

4. Heat treatment 

As we all know, heat treatment is very important in the screw production process. In order to ensure the quality of products, Joiner has purchased professional heat treatment equipment to produce, so that we can control the construction process by ourselves. 

5. Packing Details:

According to your order quantities and products sizes to choose wooden boxes or cartons to pack:

1. Rust-proof oil processing,
2. Oiled paper packages,
3. Bubble wrap package,
4. Special foam packaging,
5. Packing,
6. Sealing.

6. Why choose us?
a. Total solution of highly wear-resistance and corrosion-resistance problems;
b. Expert of engineering design and consulting,
c. Advanced manufacturing capabilities and technology,
d. Lean production management
e. Top quality products with high cost performance

7. Products photos:


 

8. Example spare parts we produce for Petrochemical Industry

Barrel:



Shafts: