Alloy Steel Pipe in A335 P5 Material for Petrochemical & Refinery
Industry
ASTM A335 P5 is the part of ASTM A335, The pipe shall be suitable
for bending, flanging, and similar forming operations, and for
fusion welding.
The steel material shall conform to chemical composition, tensile
property, and hardness requirements. The range of ASTM A335 P5 pipe
sizes that may be examined by each method shall be subjected to the
limitations in the scope of the respective practice. 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 ASTM A335 P5 pipe sizes that may be examined by each
method shall be subjected to the limitations in the scope of the
respective practice.
The different mechanical test requirements for pipes, namely,
transverse or longitudinal tension test, flattening test, and
hardness or bend test are presented.Both ends of each crate will
indicate the order no., heat no., dimensions, weight and bundles or
as requested.
1. Application:
For the low and medium pressure boiler and steam header pipes;
For the high-pressure boiler and steam pipes, and the petrochemical
industry pipes;
Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils;
Gas Productions; Refineries and etc.
2. Available Size Range
| OD | Thickness |
| mm | inch | mm | SCH |
| 88.9~1422 | 3''~ 56'' | 2.11~140 | ≥SCH10 |
| *If the steel grades and size you are looking for are not listed
above, please contact us for further information. |
3. Standards:
ASTM A335 Standard Specification for Seamless Ferritic Alloy-Steel
Pipe for High-Temperature Service
4. Ordering Information
Quantity (feet, meters, or number of lengths),
Name of material (seamless alloy steel pipe),
Grade (P5),
Manufacture (hot-finished or cold-drawn),
Size using one of the following:
NPS and schedule number;
Outside diameter and nominal wall thickness;
Outsider diameter and minimum wall thickness;
Inside diameter and nominal wall thickness;
Inside Diameter and minimum wall thickness.
Length (specific or random)
End finish (plain end or bevel end)
5. Chemical Requirements
| Chemical Requirements |
| Grade | UNS Designation | Composition, % |
| C | Mn | P
max | S
max | Si | Cr | Mo | Others |
| P5 | K41545 | 0.15max | 0.30-0.60 | 0.025 | 0.025 | 0.50max | 4.00-6.00 | 0.45-0.65 | ... |
6. Tensile Requirements
Tensile Strength min.: 60ksi / 415MPa
Yield Strength min.: 30ks / 205MPa
7. Inspection & Test
Chemical composition, mechanical properties ( tensile strength,
yield strength, elongation, flaring, flattening, bending, hardness,
impact test), surface and dimension, NDE, hydrostatic test.
8. Manufacture
Hot Rolled or Cold Drawn
9. Manufacturing Process
Raw Material Inspection → Cold Centering → Heating → Piercing &
Rolling → SIzing → Heat Treatment → Testing → Finishing → NDE →
Visual & Dimension Inspection → Marking → Storing & Shipping
10. Supplementary Requirements
S1. Product Analysis
Product analysis shall be made on each length of pipe. Individual
lengths failing to conform to the chemical composition requirements
shall be rejected.
S2. Transverse Tension Tests
A transverse tesnion test shall be made on a specimen from one end
or both ends of each pipe NPS 8 and over. If this supplementary
requirement is specified, the number of tests per pipe shall also
be specified. If a specimen from any length fails to meet the
required tensile properties (tensile, yield, and elongation), that
length shall be rejected subject to retreatment in accordance with
Specification A999/A999M and satisfactory retest.
S3. Flattening Test
S4. Metal Structure and Etching Tests
The steel shall be homogeneous as shown by etching tests conducted
in accordance with the appropriate portions of Method E381. Etching
tests shall be made on a cross section from one end or both ends of
each pipe and shall show sound and resonably uniform material free
from injurious laminations, cracks, and similar objectionable
defects. If this supplementary requirement is specified, the number
of tests per pipe required shall also be specified. If a specimen
from any length shows objectionable defects, the length shall be
rejected, subject to removal of the defective end and subsequent
retests indicating the remainder of the length to be sound and
resonably uniform material
S5. Photomicrographs
S6. Photomicrographs for Individual Pieces
S7. Alternative Heat Treatment -Grade P91
S8. Melting Practice - Grades P2 and P12
