Best Quality Fast Delivery ASTM A335 Alloy Seamless Steel Pipe for Power Plant
We are supplying seamless alloy pipe with big diameter and wall thickness. This kind of alloy pipe are widely used at power plant, boiler industry, mechanical making, chemical plant, nuclear power industry, etc.
Standard: ASME SA335
Steel grade: SA335 P11/P12/P22/P91/P92,
Outer diameter: 219mm~1066mm
Wall thickness: 15mm~120mm
Tolerance of sizes:
Type of pipe Outer diameter Wall thickness
OD (mm) Tolerance (mm) WT (mm) Tolerance (mm)
Hot Rolled Steel Pipes 219~457 ±1.0% ≤20 -10%~+12.5%
20~40 -10%~+10%
457~1066 ±0.9% >40~70 -7%~+9%
70~120 -6%~+8%
Mechanical Properties of boiler pipe:
Standard Steel grade Tensile strength(MPa) Bend strength(Mpa) Elongation
% Impact energy(J) Hardness
ASME
SA335 SA335 P11 ≥415 ≥205 ≥22 ≥35 ≤163HB
SA335 P12 ≥415 ≥220 ≥22 ≥35 ≤163HB
SA335 P22 ≥415 ≥205 ≥22 ≥35 ≤163HB
SA335 P5 ≥415 ≥205 ≥22 ≥35 ≤187HB
SA335 P91 585~760 ≥415 ≥20 ≥35 ≤250HB
SA335 P92 ≥620 ≥440 ≥20 ≥35 250HB
Chemical composition boiler pipe:
standard Steel grade Chemical composition (%)
C Si Mn P S Cr Mo Cu Ni V AL W Nb N
ASME
A335 SA335P11 0.05
~0.15 0.5
~1.0 0.3
~0.6 ≤0.03 ≤0.03 1.0
~1.5 0.5
~1.0
SA335P12 0.05
~0.15 ≤0.5 0.3~
0.6 ≤0.03 ≤0.03 0.8
~1.25 0.44
~0.65
SA335P22 0.05
~0.15 ≤0.5 0.3~
0.6 ≤0.03 ≤0.03 1.9
~2.6 0.87
~1.13
SA335P5 ≤0.15 ≤0.5 0.3~
0.6 ≤0.03 ≤0.03 4.0
~6.0 0.45
~0.65
SA335P91 0.08
~0.12 0.2
~0.5 0.3~
0.6 ≤0.02 ≤0.01 8.0
~9.5 0.85
~1.05 ≤0.4 0.18
~0.25 ≤0.015 0.06
~0.1 0.03
~0.07
SA335P92 0.07
~0.13 ≤0.5 0.3~
0.6 ≤0.02 ≤0.01 8.5
~9.5 0.3~
0.6 B0.001
0.006 ≤0.4 0.15
~0.25 ≤0.015 1.5
~2.0 0.04
~0.09 0.03
~0.07
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