A249 TP304H Stainless Steel Heat Resistant Pipe
GNEE is a major supplier of A249 TP304H Austenitic Stainless Steel Pipe. We provide high-quality steel pipes to customers around the world based on their needs.
A249 TP304H boiler pipe improves its high temperature corrosion resistance and heat resistance by adding a higher proportion of carbon elements. Therefore, the use temperature of A249 TP304H stainless steel high temperature pipe can reach up to 650℃ and the oxidation resistance temperature can reach up to 850℃.
A249 TP304H high temperature seamless pipe is mainly used to manufacture large-scale generator boiler superheater tubes, reheater tubes, steam pipes and petrochemical heat exchange tubes. The allowable oxidation resistance temperature for boiler tubes is 705℃.
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A249 TP304H Stainless Steel Seamless Pipes Mechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304H | 515 | 205 | 40 | 92 | 201 |
A249 TP304H Stainless Steel Pipes Physical Properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
|---|---|---|---|---|---|---|---|---|---|
| 0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
| 304H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 72 |
A249 TP304H High pressure tube

Why choose us
Gnee company covers an area of 35,000 square meters and has more than 200 employees, including 80 technical staff. We have established an effective and complete quality control and assurance system. The company has also obtained ISO9001 quality system certification.
Gnee Company Team

FAQ
1.Q.What's your advantage?
A.Honest business with competitive price and professional service on export process.
2.Q.Can your products be customized?
A.Yes, we can produce and process according to your requirements.
3.Q. Do you have a quality control system?
A.Yes, we have our own quality control laboratory.
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