Dominion Parts
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Under harsh conditions of high temperature, high pressure, and high corrosion, the engine's exhaust pipe directly determines the efficiency and reliability of the powertrain. We leverage deep expertise in precision casting to provide high-performance exhaust pipe solutions.
Our products employ investment casting or sand-coated iron molds to ensure complex internal cavities are formed in one piece with uniform wall thickness. We use ductile iron, special stainless steel, and aerospace-grade titanium alloys to balance strength and heat resistance.
Choosing our components means opting for higher product reliability, longer service life, and optimized overall cost. We have assisted numerous OEMs worldwide in meeting emission standards from China I to China VI, covering passenger cars, commercial vehicles, and construction machinery.
| IRON MATERIAL STANDARDS | |||||
|---|---|---|---|---|---|
| ISO | JIS | rOCT | DIN | EN | ASTM |
| 400-18 | FCD400-18 | B440 | GGG40 | GJS-400-18 | 60-40-181 |
| 450-10 | FCD450-10 | B445 | GGG45 | GJS-450-10 | 65-45-12 |
| 500-7 | FCD500-7 | B450 | GGG50 | GJS-500-7 | 70-50-05 |
| 600-3 | FCD600-3 | B460 | GGG60 | GJS-600-3 | 80-60-03 |
| STEEL MATERIAL STANDARDS | |||||
|---|---|---|---|---|---|
| ISO | JIS | rOCT | DIN | EN | ASTM |
| X5CrNi18-10 | SUS304 | 08X18H10 | 1.4306 | GX2CrNi19-11 | 304/304L |
| ZG07Cr19Ni9 | SUS316 | 03X17H14M2 | 1.4308 | GX5CrNi19-10 | 316 /316L |
| X2CrNiMoN22-5-3 | SUS329J3L | 03X22H6M2 | 1.4462 | X2CrNiMoN22-5-3 | S31803 |
Sand casting: A process of creating metal parts by shaping sand molds from a pattern of the desired shape and pouring molten metal into the mold.
Surface treatment: Electroplating, Galvanizing, Sand blasting, Spray coating, Spray painting, Electrophoresis, Polishing, and Antirust treatments.
We provide a complete procurement service for world market leaders, medium-sized enterprises, and multinational corporations. Our factory specializes in cast iron casting and CNC machining parts used for valves, pumps, minerals, construction, and agriculture machinery.

