2. Screw Elements 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. Our technology

4. Our factory

Our factory is state-of-the art and spans over 20,000 square meters. The factory houses more than 145 sets of different domestic and foreign high precision production equipment, with the degree of numerical control up to 95%. 

5. 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.

6. Quality Craftsmanship
we believe there’s nothing more important than getting it right the first time! That’s why our team of engineering experts does whatever it takes to design the best products to match your application. Once the design is complete, our shafts, barrels and screws are precision built to provide you with the highest level of quality and performance possible. Each product is then quality inspected for dimensional accuracy, straightness, and surface finishing.

7. 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.