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ASTM A335 P1 Pipes & Tubes

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ASTM A335 P1 Alloy Steel Seamless Pipe Supplier

ASTM A335 P1 Pipes & Tubes

Sachin Steel is a trusted manufacturer, supplier, and exporter of ASTM A335 P1 Alloy Steel Pipes, offering premium-quality solutions for various industries. These pipes belong to the chromium-molybdenum alloy steel family and perform reliably in moderate- to high-temperature environments. With robust construction and adherence to international quality standards, our A335 P1 Seamless Pipes ensure durability, strength, and cost-effectiveness.

The ASTM A335 P1 Pipe is composed of carbon, manganese, phosphorus, sulphur, silicon, molybdenum, and approximately 1% chromium, making it a low-carbon alloy steel with 0.05–0.15% carbon content. This composition provides excellent weldability at room temperature and enhances resistance against high-temperature stress. Available in a wide range of schedules from SCH20 to XXS and sizes ranging from 1/8NB to 26NB, these pipes are suitable for a variety of applications.

We offer A335 P1 pipes in different shapes and forms, including round, square, rectangular, and hydraulic types. The pipes can be supplied with bevelled, plain, or threaded ends, depending on the requirement. Thickness ranges from 3mm to 12mm, with options for cold-drawn or cold-rolled types. These pipes are available in single random, double random, and custom cut-to-length sizes to meet diverse project needs.

Our SA335 P1 pipes deliver a minimum yield strength of 205 MPa and a tensile strength of 415 MPa, ensuring reliable performance across industries at competitive prices.

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Table Of Content

What is ASTM A335 P1 Pipes?

ASTM A335 P1 pipes are seamless low-alloy carbon steel pipes, also known as carbon-molybdenum or chrome-moly P1 pipes, designated by UNS K11522. Designed for moderate- to high-temperature applications, these pipes offer improved strength and creep resistance compared to plain carbon steel, thanks to their carbon and approximately 0.5% molybdenum content. The seamless construction ensures uniform strength, durability, and structural integrity, making them ideal for boiler, pressure vessel, and moderate-pressure applications. 

ASTM A335 P1 pipes can be manufactured as hot-finished or cold-drawn and are often self-quenched in air. Common heat treatments include N+T, Q+T, or A/N+T processes. These pipes comply with ASME SA335 P1 standards and are available in various diameters and lengths. Mechanical properties include a minimum tensile strength of 415 MPa, a yield strength of 205 MPa, and an elongation of 30/20% (L/T). Serving as an economical solution for specific temperature ranges, P1 pipes provide reliable performance where higher-grade P11 or P22 pipes are unnecessary.

Types of ASTM A335 P1 Pipe

seamless-pipes

SA335 P1 Chrome Moly Pipe

seamless-tubes

UNS K11522 Boiler Pipe

erw

SA335P1 High Temperature Seamless Pipe

Rectangular Pipe

SA335 Gr P1 Rectangular Pipe

Welded Tube

ASTM A335 Gr P1 High Pressure Pipe

Square Pipe

NBR 5603 P1 Square Pipe

Request Quote on Alloy P1 Pipes
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ASTM A335 P1 Pipe Specification

ASTM A335 P1 Pipe Standard ASTM A335 P1, SA335 P1 (with IBR Test Certificate)
ASTM A335 P1 Pipe Size 1/2” NB to 36” NB
ASTM A335 P1 Pipe Thickness 3-12mm
ASTM A335 P1 Pipe Schedules SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
ASTM A335 P1 Pipe Origin European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material)
ASTM A335 P1 Pipe Tolerance Cold drawn pipe: +/-0.1mm
Cold rolled pipe: +/-0.05mm
Craft Cold rolled and Cold drawn
ASTM A335 P1 Pipe Type Seamless / ERW / Welded / Fabricated
ASTM A335 P1 Pipe available in Form of Round, Square, Rectangular, Hydraulic Etc.
ASTM A335 P1 Pipe Length Standard
Double &
In Cut length also.
ASTM A335 P1 Pipe End Plain End, Beveled End, Treaded
Specialized in Large Diameter ASTM A335 P1 Pipe
Additional Testing NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.
Application Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

A335 P1 Chemical Composition

Grade C Cr Mn Mo P S Si
Alloy Steel P1 0.05 – 0.15 1.00 – 1.50 0.30 – 0.60 0.44 – 0.65 0.025 max 0.025 max 0.50 – 1.00

A335 P1 Pipe Equivalent Material

ASTM JIS G 3458 ASME DIN UNS ABS ISO NK
A335 P1 STPA 12 SA335 P1 17175
15Mo3		 K11597 ABS 6 2604 II TS26 KSTPA 12
17177
15Mo3		 2604 III TW26

ASTM A335 P1 Pipe Size Chart

NB 15 25 40 65 90 125 200 300 400 500 600 700 800 900
OD in mm 10.29 21.34 33.4 48.26 73.03 101.6 141.3 219.1 323.9 406.4 508 609.6 711.2 812.8 914.4
Size in inch 1/8 1/2 1 1 1/2 2 1/2 3 1/2 5 8 12 16 20 24 28 32 36
S10                   6.4 6.4 6.4 7.9 7.9 7.9
S20               6.4 6.4 7.9 9.5 9.5 13 13 13
S40 1.73 2.77 3.38 3.68 5.16 5.74 6.55 8.18 10.3 12.7 15.1 17.5   17.5 19.1
S60               10.3 14.3 16.7 20.6 24.6      
S80 2.41 3.73 4.55 5.08 7.01 8.08 9.53 12.7 17.5 21.4 26.2 31      
S100               15.1 21.4 26.2 32.5 38.9      
S120             12.7 19.3 25.4 31 38.1 46      
S140               20.6 28.6 36.5 44.5 52.4      
S160   4.78 6.35 7.14 9.53   15.9 23 33.3 40.5 50 59.5      

ASTM A335 P1 Pipe Mechanical Properties

Tensile Strength, MPa Yield Strength, MPa Elongation
415 min 205 min 30 min

SA 335 Gr P1 Pipe Heat Treatment

Grade Type Tempering Temperature, min °F [°C]
P1 Subcritical Anneal 1200 – 1300 [650 – 705]
Normalize and Temper 1200 [650]

Alloy Steel P1 Pipes (ASTM A335) Outside Diameter & Tolerance

ASTM A450 Hot rolled Outside Diameter, mm Tolerance, mm
OD≤101.6 +0.4/-0.8
101.6＜OD≤190.5 +0.4/-1.2
190.5＜OD≤228.6 +0.4/-1.6
Cold Drawn Outside Diameter, mm Tolerance, mm
OD＜25.4 ±0.10
25.4≤OD≤38.1 ±0.15
38.1＜OD＜50.8 ±0.20
50.8≤OD＜63.5 ±0.25
63.5≤OD＜76.2 ±0.30
76.2≤OD≤101.6 ±0.38
101.6＜OD≤190.5 +0.38/-0.64
190.5＜OD≤228.6 +0.38/-1.14
ASTM A530 & ASTM A335 NPS Outside Diameter, inch Tolerance, mm
1/8≤OD≤1-1/2 ±0.40
1-1/2＜OD≤4 ±0.79
4＜OD≤8 +1.59/-0.79
8＜OD≤12 +2.38/-0.79
OD>12 ±1%

ASTM A335 Alloy Steel P1 Pipe Wall thickness & Tolerance

ASTM A450Hot rolledOutside Diameter, mmTolerance, %
OD≤101.6, WT≤2.4+40/-0
OD≤101.6, 2.4＜WT≤3.8+35/-0
OD≤101.6, 3.8＜WT≤4.6+33/-0
OD≤101.6, WT>4.6+28/-0
OD>101.6, 2.4＜WT≤3.8+35/-0
OD>101.6, 3.8＜WT≤4.6+33/-0
OD>101.6, WT>4.6+28/-0
Cold DrawnOutside Diameter, mmTolerance, %
OD≤38.1+20/-0
OD>38.1+22/-0
ASTM A530NPSOutside Diameter, inchTolerance, %
1/8≤OD≤2-1/2+20.0/-12.5
3≤OD≤18, WT/OD≤5%+22.5/-12.5
3≤OD≤18, WT/OD>5%+15.0/-12.5
OD≥20, WT/OD≤5%+22.5/-12.5
OD≥20, WT/OD>5%+15.0/-12.5

Industrial Uses of ASTM A335 P1 Pipe

    • Petrochemical Industry
    • Chemical Industry
    • Oil and Gas Industry
    • Pulp & Paper Indusry
    • Power Plant Industry
    • Food Processing Industry
    • Pharmaceuticals Industry
    • Energy Industry
    • Aerospace Industry
Application Industries

FAQs About ASTM A335 P1 Pipe

ASTM A335 P1 is a low-carbon, chromium-molybdenum alloy steel used to make seamless pipes. It is designed for high-temperature applications and offers excellent strength, durability, and weldability.

ASTM A335 P1 is a seamless ferritic alloy steel pipe designed for high-temperature service. It is primarily used in applications such as power plants, boilers, and petrochemical industries.

These pipes provide a minimum yield strength of 205 MPa, a minimum tensile strength of 415 MPa, and an elongation of 30% or more, ensuring reliable performance under stress.

The pipe contains carbon (0.05–0.15%), manganese, phosphorus, sulfur, silicon, chromium, and molybdenum. This composition ensures excellent weldability and high-temperature resistance.

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