2. Materials:

※For wear application:
Tool steel: W6Mo5Cr4V2
PM-HIP materials: SAM10, SAM26, SAM39, CPM 10V,CPM9V.
※For corrosion application:
Nitrided steel: 38CrMoAl
PM-HIP materials: WR4, SAM26, SAM39, CPM 10V,CPM9V.
※For wear and corrosion application:
PM-HIP materials: SAM26, SAM39, CPM 10V,CPM9V
※Other materials:
304, 316L, C276 etc.

3. Process

4. 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.

5. Our factory

Our factory is state-of-the art and spans over 20,000 square meters. The factory houses more than 130 sets of different domestic and foreign high precision production equipment, with the degree of numerical control up to 95%.

6. 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. In China, we are the only company that does heat treatment by ourselves, and the heat treatment of screw components made by Nanjing factory is processed by outsiders, so the quality of products can not be completely guarantee.

7. Packing Details :

Standard paper boxes: to product products,  we first use antirust paper, then bubble, next custom cartons.

8. Qualification certificate guarantee

As a core component manufacturer of extruders, Joiner machinery has not only passed the ISO9001 quality system certification, but also has more than 20 patent certificates to its name. Joiner has also won the honorary title of national high-tech enterprise.

9. Products photos