ASTM A335 P11, P12, P22, P91 Seamless Alloy Steel Pipes Manufacturers & Suppliers in India
As one of the biggest supplier of ASTM A335 P11, P12, P22, P91 alloy steel pipes in India, Metallica carries inventory of over 15,000 tons in its warehouses in Mumbai, Maharashtra India. We sell our ASTM A335 P11, P12, P22, P91 seamless alloy steel pipe products worldwide. We can supply our ASTM A335 P11, P12, P22, P91 seamless alloy steel tube products not only in industry standard lengths and diameters, but also in custom length and diameters. Our range of alloy steel ASTM A335 P11, P12, P22, P91 seamless alloy steel pipes encompasses size range from 50.8 to 860 mm and in thickness 2.77 to 100mm. P11, P22 and P91 pipes are mainly used for power generation equipment applications.
The specifcation ASTM A335/ASME SA335 covers seamless ferritic alloy-steel pipe for high-temperature service. The pipe shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Grade P2 and P12 steel pipes shall be made by coarse-grain melting practice. The steel material shall conform to chemical composition, tensile property, and hardness requirements. Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices. The range of pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practices. The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.
Chemical Composition of ASTM A335 P11, P12, P22, P91 Alloy Steel Seamless Tubes – Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
|Chemical Components (%)|
Mechanical Properties of ASTM A335 P11, P12, P22, P91 Alloy Steel Seamless Tubes – Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
|Strength (Mpa)||Strength (Mpa)||(%)||(HRB)|
Heat Treatment Requirements for ASTM A335 P11, P12, P22, P91 Alloy Steel Seamless Tubes – Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
|Grade||UNS Number||Heat Treat Type||Austenitizing / Solutioning Temperature, min or range °F [°C]||Subcritical Annealing or Tempering Temperature, Min or range °F [ °C ]|
|P11||K11597||full or isothermal anneal normalize and temper||–||1200 |
|[650 to 730]|
|P12||K11562||full or isothermal anneal normalize and temper subcritical anneal||–||1200 |
|1200-1300 [650 to 705]|
|P22||K21590||full or isothermal anneal normalize and temper||–||1250 |
|P91||K91560||normalize and temper|
quench and temper
Tests & Inspection of Alloy Steel Pipes – Gr. P11, P22 & P91 Pipes
- Chemical Composition Analysis Test With 100% PMI and One tube from each heat by Direct Reading Spectrometer
- Visual Test and Endoscope Test for Surface Quality Test
- 100% Hydro static Test and 100% Eddy Current Test
- Ultrasonic Test subject to the MPS (Material Purchase Specification)
- Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test
- Impact Test subject to Standard request
- Grain Size Test and Inter granular Corrosion Test
- Ultrasonic measuring of Wall Thickness
- 100% Eddy current test after corrugation.
- Visual test and dimensional inspection after corrugation.