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and alloy steel tubes used for many different purposes.
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A335 P9
ASTM A335 P9 Alloy steel pipe apply to petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, corrosion resistant.
ASTM A335 P9 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 P9 alloy steel 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 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.
- Outer Dimensions: 19.05mm – 114.3mm
- Wall Thickness: 2.0mm – 14 mm
- Length: max 16000mm
Steel grade: ASTM A335 P9 alloy steel pipe
Packing of ASTM A335 P9 alloy steel pipe:
Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
Inspection and Test of ASTM A335 P9 alloy steel pipe:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
Surface treatment of ASTM A335 P9 alloy steel pipe:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
ASTM A335 P9 alloy steel pipe alloy steel pipe Chemical Compositions(%)
| Compositions | Data |
| UNS Designa-tion | K41545 |
| Carbon(max.) | 0.15 |
| Manganese | 0.30-0.60 |
| Phosphorus(max.) | 0.025 |
| Silicon(max.) | 0.50 |
| Chromium | 4.00-6.00 |
| Molybdenum | 0.45-0.65 |
| Other Elements | … |
Mechanical properties for ASTM A335 P9 alloy steel pipe
| Properties | Data |
| Tensile strength, min, (MPa) | 415 Mpa |
| Yield strength, min, (MPa) | 205 Mpa |
| Elongation, min, (%), L/T | 30/20 |
Material & Manufacture of ASTM A335 P9 alloy steel pipe
Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.
Heat Treatment of ASTM A335 P9 alloy steel pipe
- A / N+T
- N+T / Q+T
- N+T
Mechanical Tests Specified of ASTM A335 P9 alloy steel pipe
- Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
- For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
- For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
Notes for Bend Test of ASTM A335 P9 alloy steel pipe:
- For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
- Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
- The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.
A335 P91
ASTM A335 P91 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.
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.
ASTM A335 P91 high pressure semaless boiler pipe, The range of ASTM A335 P91 seamless alloysteel pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice. The range of ASTM A335 P91 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.
- Outer Dimensions: 19.05mm – 114.3mm
- Wall Thickness: 2.0mm – 14 mm
- Length: max 16000mm
Steel grade: ASTM A335 P91
Packing:
Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
Inspection and Test:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
Surface treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
ASTM A335 P91 Chemical Compositions(%)
| Compositions | Data |
| UNS Designa-tion | K91560 |
| Carbon(max.) | 0.08-0.12 |
| Manganese | 0.30-0.60 |
| Phosphorus(max.) | 0.025 |
| Silicon(max.) | 0.50 |
| Chromium | 4.00-6.00 |
| Molybdenum | 0.45-0.65 |
| Other Elements | … |
Mechanical properties for ASTM A335 P91
| Properties | Data |
| Tensile strength, min, (MPa) | 415 Mpa |
| Yield strength, min, (MPa) | 205 Mpa |
| Elongation, min, (%), L/T | 30/20 |
Material & Manufacture
Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.
Heat Treatment
- A / N+T
- N+T / Q+T
- N+T
Mechanical Tests Specified
- Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
- For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
- For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
Notes for Bend Test:
- For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
- Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
- The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.
ASTM A335 P9 Alloy Steel Pipes
ASTM A335 P9 Alloy Steel Pipes
alloy steel, Alloy steel pipe, ASTM A335, ASTM A335 p9, Steel pipe, steel pipes
ASTM A335 P9 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.
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 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.
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 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.
Material & Manufacture
- Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.
Heat Treatment
- A / N+T
- N+T / Q+T
- N+T
Mechanical Tests Specified
- Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
- For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
- For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
Notes for Bend Test:
- For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
- Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
- The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.
| Chemical elements | Data |
| UNS Designa-tion | K41545 |
| Carbon(max) | 0.15 |
| Manganese | 0.30-0.60 |
| P&S(max) | 0.025 |
| Silicon(max) | 0.50 |
| Chromium | 4.00-6.00 |
| Molybdenum | 0.45-0.65 |
| Others | — |
Mechanical Properties of ASTM A335 P9
| Properties | Data |
| Tensile strength, min, (MPa) | 415 |
| Yield strength, min, (MPa) | 205 |
| Elongation, min, (%), L/T | 30/20 |
Permitted tolerance for OD
| OD | Plus tolerance(+) | Minus tolerance (-) |
| 10.29—48.3 | 0.4 | 0.4 |
| <48.3—-≤114.3 | 0.79 | 0.79 |
| <114.3—≤219.1 | 1.59 | 0.79 |
| <219.1—≤323.9 | 2.38 | 0.79 |
| <323.9 | ±1% | |
Wall thickness is average wall or according to ASME SA530.
ASTM A335 P11 alloy steel pipe
a335, alloy steel, ASTM A335, ASTM A335 P11, ASTM A335 pipe, p11
ASTM A335 P11 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. 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 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.
Material & Manufacture
Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.
Heat Treatment
- A / N+T
- N+T / Q+T
- N+T
Mechanical Tests Specified
- Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
- For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
- For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
Notes for Hardness Test:
- P11 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].
Notes for Bend Test:
- For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
- Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
- The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.
Chemical Requirements of ASTM A335 P11
| Chemical elements | Data |
| UNS Designa-tion | K11597 |
| Carbon | 0.05-0.15 |
| Manganese | 0.30-0.60 |
| P&S(max) | 0.025 |
| Silicon | 0.50-1.00 |
| Chromium | 1.00-1.50 |
| Molybdenum | 0.44-0.65 |
| Others | — |
Mechanical Properties of ASTM A335 P11
| Properties | Data |
| Tensile strength, min, (MPa) | 415 |
| Yield strength, min, (MPa) | 205 |
| Elongation, min, (%), L/T | 30/20 |
ASTM A333 Grade 8 Seamless Pipes
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| ASTM A333 Grade 8 Seamless Pipes |
ASME SA333 Gr.8 Seamless Steel Pipe
alloy steel, ASME SA333 Gr.8, astm a333, ASTM A333 Gr.8, ASTM A333 Grade 8, gr 8, seamless steel pipe
ASTM A333 Standard covers seamless and welded steel pipe for low temperature service. The Grade 8 steel involved is similar to AISI 4032 low alloy steel. ASTM A333 Grade 8 pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
Seamless and Welded Steel Pipe size for Low-Temperature Service:
- Outer Dimensions: 19.05mm-114.3mm
- Wall Thickness:2.0mm-14 mm
- Length: max 16000mm
Application: Seamless and Welded Steel Pipe for Low-Temperature Service.
Steel grade: ASTM A333 Grade 8
Steel grade: ASTM A333 Grade 8
Inspection and Test:
- Chemical Composition Inspection, Mechanical Properties Test
- Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test
- Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
| Crade | The lowest temperature for strike test | |
| ℉ | ℃ | |
| ASTM A333 Grade 8 | -320 | -195 |
ASTM A333 Gr. 8 Chemical Compositions(%)
| Grade | Chemical Composition (%) | ||||||
| C(max) | Si | Mn | P(max) | S(max) | Cr | Ni | |
| Grade 8 | 0.13 | 0.13-0.32 | 0.9 | 0.025 | 0.025 | -- | 8.40-9.60 |
ASTM A333 Gr.7 Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Point (MPa) | Elongation (%) | |
| Y | X | |||
| ASTM A333 Grade 8 | ≥690 | ≥515 | ≥22 | -- |
Impact temperature
Minimum Impact Test Temperature -45 C(-50 F)
Impact requirements
| Size | Minimum Average Notched Bar Impact Value of Each Set of Three Specimens | Minimum Notched Bar Impact Value of One Specimen Only of a Set | ||
| Size of Specimen, mm |
ft-lbf
|
J
|
ft-lbf
|
J
|
| 10 by 10 |
13
|
18
|
10
|
14
|
| 10 by 7.5 |
10
|
14
|
8
|
11
|
| 10 by 6.67 |
9
|
12
|
7
|
9
|
| 10 by 5 |
7
|
9
|
5
|
7
|
| 10 by 3.33 |
5
|
7
|
3
|
4
|
| 10 by 2.5 |
4
|
5
|
3
|
4
|
Straight line interpolation for intermediate values is permitted.
Impact temperature reduction
| Specimen Width Along Notch or Actual Material Thickness mm | Temperature Reduction,Degrees Colder C |
| 10 (standard size) | 0 |
| 9 | 0 |
| 8 | 0 |
| 7.5 (3/4 standard size) | 3 |
| 7 | 4 |
| 6.67 (2/3 standard size) | 5 |
| 6 | 8 |
| 5 (1/2 standard size) | 11 |
| 4 | 17 |
| 3.33 (1/3 standard size) | 19 |
| 3 | 22 |
| 2.5 (1/4 standard size) | 28 |
P Number/ Group Number
ASTM A333
|
Grade 6
|
| P Number |
1
|
| Group |
1
|
Machinability
Machinability is good, similar to law alloy 4032 steel.
Forming
The product comes in piping form but may be formed readily by conventional methods.
Welding
Weldable by conventional methods.
Heat Treatment
Product is supplied in the normalized, 1500 f and air cooled, condition. It may be quenched and tempered by heating to 1475 F, quench in circulating water and then temper by re-heating to 1100 F and rapid air cooling.
Forging
Product is supplied in pipe form and not normally forged from that shape.
Hot Working
Hot working may be done qt 2000 F down to 1600 F if need be. Do not hot work below 1550 F and immediately following hot working cool in a controlled atmosphere furnace from a temperature above 1550 F.
Cold Working
Cold working may be done by conventional methods.
Annealing
Anneal, or normalize, at 1600 F and air cool.
Strike Temperature Condition
| Grade | The lowest temperature for strike test | |
| ℉ | ℃ | |
| ASTM A333 Gr.6 | -150 | -100 |
Packing:
- Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
- Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Delivery:
Pipes are supplied in hexagonal bundles or round bundles tied with steel strip.
Weight of bundle – up to 5000 kg upon request of customer.
Each bundle is furnished with three tags.
Weight of bundle – up to 5000 kg upon request of customer.
Each bundle is furnished with three tags.
ASTM A333 Grade 7 Seamless Pipes
ASME SA333 Gr.7 Seamless Steel Pipe
ASTM A333 Standard covers seamless and welded steel pipe for low temperature service. The Grade 7 steel involved is similar to AISI 4032 low alloy steel. ASTM A333 Grade 7 pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
Seamless and Welded Steel Pipe size for Low-Temperature Service:
- Outer Dimensions: 19.05mm-114.3mm
- Wall Thickness:2.0mm-14 mm
- Length: max 16000mm
Application: Seamless and Welded Steel Pipe for Low-Temperature Service.
Steel grade: ASTM A333 Grade 7
Inspection and Test:
Steel grade: ASTM A333 Grade 7
Inspection and Test:
- Chemical Composition Inspection, Mechanical Properties Test
- Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test
- Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
| Crade | The lowest temperature for strike test | |
| ℉ | ℃ | |
| ASTM A333 Grade 7 | -100 | -75 |
ASTM A333 Gr. 7 Chemical Compositions(%)
| Grade | Chemical Composition (%) | ||||||
| C(max) | Si | Mn | P(max) | S(max) | Cr | Ni | |
| Grade 7 | 0.19 | 0.13-0.32 | 0.9 | 0.025 | 0.025 | 2.03-2.57 | |
ASTM A333 Gr.7 Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Point (MPa) | Elongation (%) | |
| Y | X | |||
| ASTM A333 Grade 7 | ≥450 | ≥240 | ≥30 | ≥22 |
Impact temperature
Minimum Impact Test Temperature -45 C(-50 F)
Impact requirements
| Size | Minimum Average Notched Bar Impact Value of Each Set of Three Specimens | Minimum Notched Bar Impact Value of One Specimen Only of a Set | ||
| Size of Specimen, mm |
ft-lbf
|
J
|
ft-lbf
|
J
|
| 10 by 10 |
13
|
18
|
10
|
14
|
| 10 by 7.5 |
10
|
14
|
8
|
11
|
| 10 by 6.67 |
9
|
12
|
7
|
9
|
| 10 by 5 |
7
|
9
|
5
|
7
|
| 10 by 3.33 |
5
|
7
|
3
|
4
|
| 10 by 2.5 |
4
|
5
|
3
|
4
|
Straight line interpolation for intermediate values is permitted.
Impact temperature reduction
| Specimen Width Along Notch or Actual Material Thickness mm | Temperature Reduction,Degrees Colder C |
| 10 (standard size) | 0 |
| 9 | 0 |
| 8 | 0 |
| 7.5 (3/4 standard size) | 3 |
| 7 | 4 |
| 6.67 (2/3 standard size) | 5 |
| 6 | 8 |
| 5 (1/2 standard size) | 11 |
| 4 | 17 |
| 3.33 (1/3 standard size) | 19 |
| 3 | 22 |
| 2.5 (1/4 standard size) | 28 |
P Number/ Group Number
ASTM A333
|
Grade 6
|
| P Number |
1
|
| Group |
1
|
Machinability
Machinability is good, similar to law alloy 4032 steel.
Forming
The product comes in piping form but may be formed readily by conventional methods.
Welding
Weldable by conventional methods.
Heat Treatment
Product is supplied in the normalized, 1500 f and air cooled, condition. It may be quenched and tempered by heating to 1475 F, quench in circulating water and then temper by re-heating to 1100 F and rapid air cooling.
Forging
Product is supplied in pipe form and not normally forged from that shape.
Hot Working
Hot working may be done qt 2000 F down to 1600 F if need be. Do not hot work below 1550 F and immediately following hot working cool in a controlled atmosphere furnace from a temperature above 1550 F.
Cold Working
Cold working may be done by conventional methods.
Annealing
Anneal, or normalize, at 1600 F and air cool.
Strike Temperature Condition
| Grade | The lowest temperature for strike test | |
| ℉ | ℃ | |
| ASTM A333 Gr.6 | -150 | -100 |
Packing:
- Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
- Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Delivery:
Pipes are supplied in hexagonal bundles or round bundles tied with steel strip.
Weight of bundle – up to 5000 kg upon request of customer.
Each bundle is furnished with three tags.
Weight of bundle – up to 5000 kg upon request of customer.
Each bundle is furnished with three tags.
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Welcome to Sunny Steel Enterprise Ltd.
Sunny Steel provide a wide range of steel products as Steel pipes, Seamless tube and seamless pipes, Alloy pipes, Pipe fittings, Composite steel pipe used in the industry, construction etc.
You can get in touch by telephone, post, online or E-mail.
Please check the help section first to see if your question may be answered there.- Address: Siping Road, Shanghai,200081, China
- Telephone:+8621 3378 0199
- Fax number: :+8621 6185 1035
- E-mail: sales@sunnysteel.com | sunnysteel@163.com


















