• ASTM A335 P11 P91 P22 seamless ferrite alloy steel nominal pipe for high temperature

ASTM A335 standard which is equals to ASME SA335 standard,specifies the specification of seamless ferritic alloy steel pipe for high temperature service which are usually used as steel boiler tubes.Seamless pipes of this standard are either hot finished or cold drawn with finishing treatment as required.IMRI is experienced in supplying alloyed steel pipes of all steel grades such as P9,P11,P21,922,P91 seamless alloy steel pipes,etc.

Specifications

Standard ASTM A335/ASME SA335
Steel Grade/Material P1,P2,P5,P5b,P5c,P9,P11,P12,P15,P21,P22,P23,P36,P91,P92,P122,P911
OEM service Provide
Outer Diameter(OD) 1 1/2”-28”(38mm-720mm)
Wall Thickness(WT) 2.6mm-60mm
Length 5.8-16m or OEM
Packing Plastic cap and bundling
Surface Treatment Bare or 3pe,3pp,fbe anti-corrosion coated
Section Shape Round
Technique Seamless hot rolled or cold drawn
Application Seamless ferrite alloy steel pipe for high temperature boiler
Sour service No
Place of Origin China
MOQ 25 ton
Transportation 1.Sea port:Tianjin Xingang port,Qingdao port,Shanghai Luojing port
→America,Europe,Africa,Middle East,India, Pakistan,Japan,Korea,
Australia…(shipping)

2.Land port:Alataw pass port(Пограничный пункт “Алашанькоу”)
Khorgos port(Пограничный пункт “Хоргос”)
→East Asia, Uzbekistan,Kazakhstan,Kyrgyzstan…(Train)
Erlianhot port→Mongolia(Train and Truck)
Manchuria port→Russia(Train and Truck)

Chemical Composition of ASTM A335/ASME SA335 Ferrite Alloy Seamless Steel Pipe %
Grade UNS designation Carbon Manganese phos-phorus max Sulfur max Silicon Chromium Molybde-num Others
P1 K11522 0.10-0.20 0.30-0.80 0.025 0.025 0.10-0.50 0.44-0.65
P2 K11547 0.10-0.20 0.30-0.61 0.025 0.025 0.10-0.30 0.50-0.81 0.44-0.65
P5 K41545 0.15 max 0.30-0.60 0.025 0.025 0.50 max 4.00-6.00 0.45-0.65
P5b K51545 0.15 max 0.30-0.60 0.025 0.025 1.00-2.00 4.00-6.00 0.45-0.65
P5c K41245 0.12 max 0.30-0.60 0.025 0.025 0.50 max 4.00-6.00 0.45-0.65
P9 S50400 0.15 max 0.30-0.60 0.025 0.025 0.25-1.00 8.00-10.00 0.90-1.10
P11 K11597 0.05-0.15 0.30-0.60 0.025 0.025 0.50-1.00 1.00-1.50 0.44-0.65
P12 K11562 0.05-0.15 0.30-0.61 0.025 0.025 0.50 max 0.80-1.25 0.44-0.65
P15 K11578 0.05-0.15 0.30-0.60 0.025 0.025 1.15-1.65 0.44-0.65
P21 K31545 0.05-0.15 0.30-0.60 0.025 0.025 0.50 max 2.65-3.35 0.80-1.06
P22 K21590 0.05-0.15 0.30-0.60 0.025 0.025 0.50 max 1.90-2.60 0.87-1.13
P23 K41650 0.04-0.10 0.10-0.60 0.030  max 0.010 max 0.50 max 1.90-2.60 0.05-0.30 V 0.20-0.30 Cb 0.02-0.08
B 0.0010-0.006 N 0.0015 max
Al 0.030 max W 1.45-1.75
Ni 0.40 max Ti 0.005-0.060
Ti/N ≥3.5
P36 K21001 0.10-0.17 0.80-10.20 0.030 max 0.025 max 0.25-0.50 0.30 max 0.25-0.50 Ni 1.00-1.30 Cu 0.50-0.80
Cb 0.015-0.045 V 0.02 max
N 0.02 max Al 0.050 max
P91 K91560 0.08-0.12 0.30-0.60 0.020 0.010 0.20-0.50 8.00-8.50 0.85-1.05 V 0.18-0.25 N 0.030-0.070
Ni 0.40 max Al 0.02 max
Cb 0.06-0.10 Ti 0.01 max
Zr 0.01 max
P92 K92460 0.07-0.13 0.30-0.60 0.020 0.010 0.50 max 8.50-9.50 0.30-0.60 V 0.15-0.25 N 0.03-0.07
Ni 0.40max Al 0.02 max
Cb 0.04-0.09 W 1.50-2.00
B 0.001-0.006 Ti 0.01 max
Zr 0.01 max
P122 K92930 0.07-0.14 0.70 max 0.020 0.010 0.50 max 10.00-11.50 0.25-0.60 V 0.15-0.30 W 1.50-2.50
Cu 0.30-1.70 Cb 0.04-0.10
B 0.0005-0.005 N 0.040-0.100
Ni 0.50 max Al 0.020 max
Ti 0.01 max Zr 0.01 max
P911 K91061 0.09-0.13 0.30-0.60 0.020 max 0.010 max 0.10-0.50 8.5-9.5 0.90-1.10 V 0.18-0.25 Ni 0.40 max
Cb 0.060-0.10 B 0.0003-0.006
N 0.04-0.09 Al 0.02 max
W 0.90-1.10 Ti 0.01 max
Zr 0.01 max
Tensile Property Requirements for ASME SA335/ASTM A335 Steel Pipes
Grade P1,P2 P12 P23 P91 P92,P911,P36 class1 P122 P36 class2 All others
Tensile strength ≥ ksi(MPa) 55(380) 60(415) 74(510) 85(585) 90(620) 90(620) 95.5(660) 60(415)
Yield strength  ≥ksi(MPa) 30(205) 32(220) 58(400) 60(415) 64(440) 64(440) 66.5(460) 30(205)

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