ASTM A335 P11 Pipe Suppliers produce the pipes known as 1.25Cr-0.5Mo pipes due to the composition of the pipes. These are pressure pipes made up of different production technologies. The ASTM A335 Gr P11 ERW Pipe is made through the electric resistance welding. There is manganese, phosphorus, sulfur, silicon, chromium and molybdenum with 0.05 carbon in the SA335 p11 material. Since the carbon content is very low, the material is easy to weld upon. The pipes can be heat treated for strength.
ASTM A335 P11 Alloy Steel Seamless Pipe
P11 Alloy Steel Pipe
The ASTM A335 P11 alloy steel pipe can either be fully annealed or isothermal annealed, normalized and tempered over 650 degrees Celsius temperatures. The minimum tensile strength of the ASTM A335 Grade P11 smls pipe is 415MPa and the minimum yield strength is 205MPa. The pipes get furnished with plain ends or with buttweld in most cases.
The applications of the UNS K11597 Alloy steel P11 welded pipe can be seen in the marine, sea water, brackish water, water purification industrial applications because of the corrosion resistance of the Alloy Steel a335 p11 pipe against chloride ion stress corrosion cracking. The applications also include pressure applications such as oil and gas, boiler, condenser and power generation plant components. The Low Alloy steel P11 seamless pipe comes in various dimensions according to the different standards.
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Alloy Steel Pipe in Grade
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ASTM A335 P1/ P2/ P5/ P5b/ P5c/ P9/ P11/ P12/ P15/ P21/ P22/ P23/ P24/ P36/ P91/ P92/ P122/ P911
(with IBR Test Certificate) |
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In Length of
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Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths
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Value Added Service
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Draw & Expansion as per required Size & Length Heat Treatment, Bending, Annealed, Machining Etc. |
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Test Certificate
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Manufacturer Test Certificate IBR Test Certificate Laboratory Test Certificate from Govt. Approved Lab. & Under Third Party Inspection |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
| End | Plain End, Beveled End, Threaded |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| End Protection | Plastic Caps |
| Outside Coating | Black Painting, Anti-Corrosion Oil, Galvanised Finish, Finish as per customer Requirements |
| Inspection, Test Certificate/ Reports | Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports, India Boiler Regulations (IBR) Test Certificate |
| C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % |
| 0.015 max | 0.30-0.60 | 0.025 max | 0.025 max | 0.50 max | 4.00-6.00 | 0.45-0.65 |
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % |
| 415 min | 205 min | 30 min |
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Trade Name |
Grade |
UNS # |
Pipe |
Forged / Bored Pipe * |
|---|---|---|---|---|
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1 1/4 Chrome |
P11 |
K11597 |
A335 / SA335 |
A369 / SA369 |
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2 1/4 Chrome |
P22 |
K21590 |
A335 / SA335 |
A369 / SA369 |
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5 Chrome |
P5 |
K41545 |
A335 / SA335 |
A369 / SA369 |
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9 Chrome |
P9 |
S50400 |
A335 / SA335 |
A369 / SA369 |
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P91 |
P91 |
K91560 |
A335 / SA335 |
A369 / SA369 |
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P92 |
P92 |
K92460 |
A335 / SA335 |
A369 / SA369 |
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ASTM A450
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Hot rolled
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Outside Diameter, mm
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Tolerance, mm
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OD≤101.6
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+0.4/-0.8
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101.6＜OD≤190.5
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+0.4/-1.2
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190.5＜OD≤228.6
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+0.4/-1.6
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Cold Drawn
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Outside Diameter, mm
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Tolerance, mm
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OD＜25.4
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±0.10
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25.4≤OD≤38.1
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±0.15
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38.1＜OD＜50.8
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±0.20
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50.8≤OD＜63.5
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±0.25
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63.5≤OD＜76.2
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±0.30
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76.2≤OD≤101.6
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±0.38
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101.6＜OD≤190.5
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+0.38/-0.64
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190.5＜OD≤228.6
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+0.38/-1.14
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ASTM A530 & ASTM A335
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NPS
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Outside Diameter, inch
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Tolerance, mm
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1/8≤OD≤1-1/2
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±0.40
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1-1/2＜OD≤4
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±0.79
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4＜OD≤8
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+1.59/-0.79
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8＜OD≤12
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+2.38/-0.79
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OD>12
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±1%
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ASTM A450
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Hot rolled
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Outside Diameter, mm
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Tolerance, %
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OD≤101.6, WT≤2.4 |
+40/-0
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OD≤101.6, 2.4＜WT≤3.8
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+35/-0
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OD≤101.6, 3.8＜WT≤4.6
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+33/-0
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OD≤101.6, WT>4.6
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+28/-0
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OD>101.6, 2.4＜WT≤3.8
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+35/-0
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OD>101.6, 3.8＜WT≤4.6
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+33/-0
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OD>101.6, WT>4.6
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+28/-0
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Cold Drawn
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Outside Diameter, mm
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Tolerance, %
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OD≤38.1
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+20/-0
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OD>38.1
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+22/-0
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ASTM A530
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NPS
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Outside Diameter, inch
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Tolerance, %
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1/8≤OD≤2-1/2
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+20.0/-12.5
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3≤OD≤18, WT/OD≤5%
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+22.5/-12.5
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3≤OD≤18, WT/OD>5%
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+15.0/-12.5
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OD≥20, WT/OD≤5%
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+22.5/-12.5
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OD≥20, WT/OD>5%
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+15.0/-12.5
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| Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | Subcritical Annealing or Tempering Temperature Range F [C] |
|---|---|---|---|
| P11 | Full or Isothermal Anneal | ||
| Normalize and Temper | ***** | 1200 [650] |
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| Tubular Products |
|---|
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Alloy Steel Seamless Pipes & Tubes ASTM A519 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing DIN 17175 Seamless Tubes of Heat-resistant Steels GOST 8732-78 Seamless Hot-worked Steel Pipes GOST 8734-75 Seamless cold-formed steel pipes GOST 550-75 Seamless steel tubes for petroleum processing and the petrochemical industry TU 14-3R-55-2001 Seamless steel pipes for steam boilers and pipelines TU 14-3-460-2003 Seamless steel tubes for boilers and pipelines GOST 9567-75 Precision steel pipes Main material grades: |
➜ 730410 Line pipe of a kind used for oil or gas pipelines: Of iron or nonalloy steel:
➜ 730420 Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: Casing:
➜ 730431 Tubes, Pipes and Hollow Profiles, of Iron or Non-alloy Steel, Cold-drawn or cold-rolled (cold-reduced)
➜ 730439 Other Tubes, Pipes and Hollow Profiles, of Iron or Non-alloy Steel
➜ 730441 Tubes, Pipes and Hollow Profiles, of stainless steel , Cold-drawn or cold-rolled (cold reduced)
➜ 730449 Other Tubes, Pipes and Hollow Profiles, of Stainless Steel, Seamless
➜ 730451 Tubes, Pipes and Hollow Profiles, of Other Alloy Steel, Cold-drawn or cold-rolled (cold reduced)
➜ 730459 Other Tubes, Pipes and Hollow Profiles, of Other Alloy Steel,
➜ 730490 Other Tubes, Pipes and Hollow Profiles, Seamless, of Iron or Steel
| Size | JSL Make Grade P11 Pipe | ISMT make P11 Seamless Pipe | MSL Make P11 Steel Pipe |
|---|---|---|---|
| 1.5" | 3,752.35 | 3,712.65 | 3,730.00 |
| 1/2" | 4,172.06 | 4,237.35 | 4,254.71 |
| 1" | 3,804.41 | 3,869.71 | 3,894.06 |
| 3/4" | 4,041.47 | 4,026.76 | 4,043.12 |
| 1.25" | 3,840.29 | 3,825.59 | 3,850.94 |
| ASTM | ASME | A335 P11 Equivalent Material | JIS G 3458 | UNS | BS | DIN | ISO | ABS | NK | LRS |
|---|---|---|---|---|---|---|---|---|---|---|
| A335 P11 | SA335 P11 | T11 | STPA 23 | K11597 | 3604 P1 621 | - | - | ABS 11 | KSTPA 23 | - |
| ASTM International | BSi - British Standards institute | Alloy Steel Material |
|---|---|---|
| A335 Gr. P11 | 3604/621 | 1 1/4% Cr 1/2% Mo |
| ASTM International | BSi - British Standards institute | Material |
|---|---|---|
| A335 Gr. P11 | 3604/621 | 1 1/4% Cr 1/2% Mo |
| MATERIAL | A335 P11 Pipe Specification | |
|---|---|---|
| ASTM | ASME | |
| ASTM A335 P11 ERW Material | A335 Grade P11 1-1/4% Chrome; ½% Moly | SA335 Grade P11 1-1/4% Chrome; ½% Moly |
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