1,Blanking

Steel plate cutting according to the blanking drawing and requirements, cutting to be carried out after the leveling.

2,Assembling

Steel plate assembly according to the requirements of the drawings, spot welding, then welding on request.

3,Inspection

Parts and blank inspecting according to the welding drawings.

4,Aging treatment

Aging vibration treatment the welded parts to eliminate stress.

5,Machining

Welded parts for cars, cutting, drilling, machining inspection after processing according to the product requirements of the drawings

6,Assembling

Assemble the parts, then conduct opening and closing first, repeat three times, it’s qualified when the opening and closing is flexible without jamming; then the shell test, the test pressure is 1.5 times the nominal pressure, no leakage is qualified; and then seal test, the test pressure is 1.1 times the nominal pressure, reach the national GB/T13927 standard is the qualified.

7,Painting

Valve painting according to user requirement. First coated with anti-rust pain, then topcoat.

8,Packaging

Packaging according to the products and user requirements.