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P11 Seamless Alloy Steel Pipes are an essential part of many industrial applications, especially those that involve high temperatures. The alloy steel grade known as P11, which is used to make these pipes, is intended to provide improved mechanical qualities as well as resistance to corrosive and heat environments. Chromium-molybdenum, or Cr-Mo, alloy steel P11 is designed to increase strength and durability at high temperatures. Because of its composition, which normally contains 0.5% chromium and 1% molybdenum, it can tolerate high temperatures and pressures, which makes it perfect for usage in the petrochemical, oil and gas, and power generation industries.
The term "seamless" describes the method used to create these pipes, which involves heating steel to mold it into a hollow tube without the need for welds or seams. This manufacturing process reduces the possibility of weak spots or failures by ensuring consistency in wall thickness and strength. In addition, seamless pipes are more resilient to high pressure situations than their welded counterparts.
Because of their strong resistance to thermal creep, P11 seamless pipes are highly regarded and can be used in high-temperature service settings up to about 550°C (1022°F). This property is essential for applications where the material must retain integrity and performance under continuous heat stress, such as boiler tubes and high-temperature piping systems.
Pipe Specification : ASTM A335, A691 / ASME SA335, SA691
Size : 1/2" NB To 36" NB
Outside Diameter (OD) : 19.05mm – 114.3mm
Wall Thickness : 2.0mm – 14 mm
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type : Seamless / EFW / Cold Drawn / Annealed & Pickled / Hot Finished / Extruded / Structural
Form : Round Pipes
Length : Single Random, Double Random & Cut Length
End : Plain End, Beveled End, Threaded
End Protection : Plastic Caps
Finish : Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Origin : Indian Origin, European Origin, Japanese Origin
Testing and Documents : Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Test Report, Non Destructive Test Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports
Packing : Packed in Wooden Boxes, Bubble wraps, Steel Strips Bundled, or as per Customers Requests
A Wide Range of ASTM A335 P11 Alloy Steel Pipes at Best Price.
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GRADE | UNS | TRADE NAME |
P11 | K11597 | 11/4 Chrome |
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 |
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% |
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