Basic Info.
Model NO.
P22
Section Shape
Round
Transport Package
as Required
Specification
10-850mm
Trademark
SHUNFU
Origin
China
HS Code
7304193000
Production Capacity
30000tons/Year
Product Description
ASTM A335 P22 Alloy Steel Seamless Pipe For High Temperature
We are leading Manufacturer, Supplier & Exporter of high quality ASTM A335 P22 Alloy Steel Seamless Pipes. These are manufactured in conformance with the international quality standards. These are used in varied engineering applications as well as in high temperature pipelines, boiler tubes and other areas. We offer these seamless pipes in different size, grades, thickness & Specification demanded by the clients. These pipes are used in various application industry like petrochemical, engineering, chemical, oil and gas and other industrial etc. We also offer our clients in competitive prices in the market.
A335/SA335 Grade P22 Alloy Steel Seamless Pipes are Carbon steel pipes with addition of chromium, molybdenum, and sometimes vanadium. Chromium, or chrome, improves high-temperature strength, increases oxidation resistance and raises the tensile, yield and hardness at room temperatures. Molybdenum increases the strength, elastic limit, resistance to wear, impact qualities and hardenability. It increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is also the most effective additive for increasing high temperature creep strength, or creep resistance, and it also enhances the corrosion resistance of steel and inhibits pitting. Grade P22 is used for high temperature service applications and is tolerant to variations in its microstructure.
P22 Pipe Applications
Due to the ferrimagnetic characteristics of iron, a few steel alloys in A335 P22 pipes can be used in applications where their reactions to magnetism are important. This includes transformers and electric motors. P22 is also a popular grade for many different applications such as:- Pharmaceutical equipment
- Chemical equipment
- Sea water equipment
- Heat exchangers
- Condensers
- Pulp and paper industry
- Off-shore oil drilling companies
- Power generation
- Petrochemicals
- Gas processing
- Specialty chemicals
A335 P22 Tube Size:
Size range:1/2" NB to 36" NBProcess: Hot Rolled or Cold rolled or Cold drawn
Schedules and thickness:SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS etc
Length:Standard, Custom, Cut length
ASTM A-335M Grade P22 Chemical Composition
| Grade | UNS | C≤ | Mn | P≤ | S≤ | Si≤ | Cr | Mo |
| P22 | K21590 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.5 | 1.90~2.60 | 0.87~1.13 |
ASTM A335M Grade P22 Mechanical Property
| ASTM A335 Grade | Tensile Strength | Yield Strength | Elongation % | |||
| ksi | MPa | ksi | MPa | Longitudinal | Transverse | |
| P22 | 60 | 415 | 30 | 205 | 30 | 20 |
Inspection & Test
Hydrostatic test shall be performed on each pipe length of ASTM A335 P22 along with dimensional inspection and visual examination. Longitudinal or transverse tension test, flattening test, or bend test shall be performed for each heat number of furnace. When specified by the purchaser, one of the alternative nondestructive tests can be performed: ultrasonic test, eddy current test, or flux leakage examination. Hardness test is not necessary.ASTM A-335M Grade P22 tube Packaging & Shipping
ASTM A335 P22 Steel Pipes may be furnished bare or coated and with capped ends. Tubes and pipes up to 3" OD will be supplied in bundles. In order to prevent rust during sea shipment, bundles of ASTM A335 P22 tubes may be wrapped with polypropylene sheets, and secured with flat steel bands. Over 3" OD will be supplied loose.
