2. Forging: after heating up, all material blocks are free forged, die forged or ring rolled according to their size.

3. Heat Treatment: We have 6 sets of electric shaft furances,3 sets of high-temperature, car type electric furnaces, and can do normalizing treatment and drawing temper.

4. Machining: Rough parts are machined by engine lathe and digital lathe according to the size, flange type and tolerance requirement.

5. Drilling: The semi-finished-products are drilled.

6. Surface treatment: Die-stamp, wash, paint, oil or galvanize flanges according to the customers' requirement.

7. Packing: Pack the flange as requeste