TP 321 Steel Pipe is a stable stainless steel whose primary advantage is its excellent resistance to intergranular corrosion after exposure to the chromium carbide precipitation temperature range of 800°F to 1500°F (427°C to 816°C). Alloy 321 stainless steel pipe is stabilized by the addition of titanium to form chromium carbide.
321 321H stainless steel tube is a titanium-stabilized version of 304 for specific applications within the sensitization temperature range. Its resistance to sensitization and higher strength at elevated temperatures make it suitable for applications where 304 will sensitize or where the heat strength of 304L is insufficient. Weld corrosion and intergranular corrosion will not occur when exposed to mildly corrosive environments. However, welding 321 should never be used in highly oxidizing environments as it is susceptible to "knife line" erosion.
However, in operating temperature environments above 500°C, 321 is the better choice and therefore has its own advantages. Alloy 321 stainless steel pipe is also beneficial for high temperature use due to its good mechanical properties. Alloy 321 stainless steel has higher creep and stress rupture properties than Alloy 304, and Alloy 304L in particular may also be considered for sensitive and intergranular corrosion problems.

321 Stainless Steel Exhaust Tubing Chemical Compatibility

Gnee Steel Co.,Ltd (GNEE) is the affiliated company for ANGANG GROUP who are one large state-owned iron and steel group located in Henan, China.

GNEE are specialized in manufacturing and supplying large quantities Seamless steel pipes and Shipping-building plates, We are provide high quality steel of Steels and Coils, plates, tool steels,steel pipes and other steel products with guaranteed Grade-A quality, excellent performance and competitive prices.

All of steel products from GNEE have been exported to overseas distributors, warehouses, and factories in USA, Mid-east, Europe, Bangladesh, Sri Lanka, Egypt, Saudi Arabia, and other countries and regions. Therefore, GNEE has got a great market share in the international market.

GNEE have a professional technician team, which not only have decades working experience in steel industry, but also have a deep and clear insight of the technology condition and the manufacturing state in the Chinese main steel mills.

With the high efficient supervision system and professional experience, we offer our efficient and considerate service to clients around the world. We hope sincerely to become your Chinese supplier and partner.

Our company will remain honest and pragmatic as always to safeguard, strengthen and carry forward our National Brand, provide quality commodities and top-class services to domestic and overseas clients. We sincerely wish to develop long-term win-win cooperation with domestic and overseas clients.