A335 P1 P2 steel pipe is a steel grade in the ASTM A335 standard. It is mainly used to transport media in high temperature and high pressure environments such as petrochemical industry, power generation, and oil refining.
P1 is a steel type in the ASTM A335 standard, which belongs to 1.25CR-0.5MO steel and has a composition similar to GB 9948 15CRMO. It has a wide range of uses and can transport media in high-temperature and high-pressure environments in petrochemical, power generation, oil refining and other industries.
The main features of A335 P1 P2 steel pipe are as follows:
A335 P1 alloy steel pipe has high thermal strength at 450~550℃.
A335 P1 high-pressure steel pipes have problems such as heat-affected zone hardening, cold cracks, and reheat cracks when used at high temperatures during post-weld heat treatment or during welding. The specifications of A335 P2 alloy steel pipe produced by GNEE include diameter 323.9mm×45mm, diameter 356mm×47mm, diameter 406mm×54mm, diameter 508mm×66mm, and diameter 609mm×78.87mm.
Chemical Composition:
| Chemical Components (%) | ||||||||||||
| Grade | C | Mn | P | S | Si | Cr | Mo | V | Nb | N | Al | others |
| P1 | 0.10-0.20 | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.10-0.50 | / | 0.44-0.65 | / | / | / | / | / |
| P2 | 0.10-0.20 | 0.30-0.61 | ≤0.025 | ≤0.025 | 0.10-0.30 | 0.50-0.81 | 0.45-0.65 | / | / | / | / | / |
Heat Treatment Requirements
| Grade | UNS Number | Heat Treat Type | Austenitizing/ Solutioning Temperature, min or range °F [°C] | Subcritical Annealing or Tempering Temperature, Min or range °F [°C] |
| P1 | K11522 | full or isothermal anneal normalize and temper subcritical anneal | … | 1200 [650] 1200-1300 [650 to 705] |
| P2 | K11547 | full or isothermal anneal normalize and temper subcritical anneal | … | 1250 [675] 1200-1300 [650 to 705] |
ASTM A335 Seamless Ferritic Alloy Steel Pipe
Testing and inspection
Each section of ASTM A335 pipe shall be hydrostatically tested unless alternative non-destructive electrical testing is selected by the purchaser or otherwise specified.
Mechanical Testing: All grades of ASTM A335 pipe shall be subjected to transverse or longitudinal tensile tests and flattening, hardness or bending tests. The test will be performed on 5% of the pipes in each heat.
1. Competitive price and quality from our own factory.
2. Approved by ISO9001, CE, SGS every year.
3. Best service within 24 hours reply.
4. Flexible payment with T/T,L/C and etc.
Gnee Customer visit
Gnee Factory environment
FAQ
1.Q. How can we trust your company?
A.We specialize in the steel business for many years, quality assurance is our prerequisite, you are welcome to visit us by all means.
2.Q.Do you provide custom made Products service?
A: Yes if you have your own design , we can produce according to your specification and drawing.
3.Q. How can I learn about your quality assurance?
A.Visiting our factory is the best way to understand each other.
Hot Tags: astm a335 p2 p1 alloy seamless steel pipe, China astm a335 p2 p1 alloy seamless steel pipe manufacturers, suppliers, factory
