321H stainless steel pipes are applied to open-pit machines, building materials, heat-resistant parts and difficult parts for heat treatment, which are highly resistant to grain boundary corrosion.

Mainly used for the manufacture of high and higher pressure steam boiler pipes with high quality carbon steel, alloy steel and stainless steel seamless steel tubes, the boiler tubes often in high temperature and high pressure pipe will work, oxidation and corrosion in high temperature flue gas and water vapor, so the requirements of steel pipe have antioxidant properties lasting high strength and high, and has good organizational stability, hydraulic pillar. Therefore, it is applied to the open field machines in the chemical, coal and petroleum industries with high corrosion resistance to the grain boundary, the heat-resistant parts of building materials and the difficult parts in heat treatment

1. oil exhaust gas burning pipe

2. engine exhaust pipe

3. boiler shell, heat exchanger, heating furnace component

4. muffling components for diesel engines

5. boiler pressure vessel

6. chemical transport vehicle

7. telescopic joint

Spiral welded pipe for 8. combustion furnace pipe and dryer