Dactron Pipe
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The ASTM A335 standard is a hallmark in the realm of alloy steel pipes, specifically engineered to excel in high-temperature and high-pressure environments. This structural standard encompasses rigorous testing methodologies including room temperature tensile, high-temperature compression, and bending testing to ensure performance under extreme conditions.
Application Area: Renowned for robustness, these pipes are integral to petroleum, chemical, and power industries. Adhering to stringent protocols ensures these pipes possess the requisite strength for high-temperature durability.
Specific Products: P11 alloy seamless tubes and ASTM A213 steel pipes are designed for boilers, superheaters, and heat exchangers. Common grades such as T11, T12, and T22 feature chromium and molybdenum to enhance oxidation and thermal strength.
| ASTM A335/A213 Chemical Requirements | ||||||||
|---|---|---|---|---|---|---|---|---|
| Grade | UNS | C | Mn | P | S | Si | Cr | Mo |
| P11/T11 | K11597 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
| P12/T12 | K11562 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | 0.50 max | 0.80-1.25 | 0.44-0.65 |
| P22/T22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 1.90-2.60 | 0.87-1.13 |
| P91/T91 | K91560 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 |
