The Application of Alloy Steel Grade P11 High Pressure Boiler Steel Tubing

Oct 21, 2025

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SCH: 40 – 160; OD: 1/2" to 24"; Length: 6 – 12 m
Density: 7.85 g/cm³; Melting Point: 1112℃F (600℃); Max Service Temp: 590℃
ASTM A335

 

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Sizes of ASTM A335 P11 Alloy Steel High Pressure Pipe

 

219.08 23.012
168.28 14.27
141.30 6.55
114.30 13.492
101.60 3.05
88.90 11.132
73.03 3.05
60.33 8.742
48.26 2.77
42.16 6.352
33.40 2.77
26.67 3.91
21.34 2.11
17.15 3.20
13.72 1.65

 

 

1″ 1.315 10 – 10S
40 – 40S
80 – 80S
160
2″ 2.375 10 – 10S
40 – 40S
80 – 80S
160
3″ 3.500 10 – 10S
40 – 40S
80 – 80S
160
4″ 4.500 10 – 10S
40 – 40S
80 – 80S
120
160
5″ 5.563 10 – 10S
40 – 40S
80 – 80S
120
160

 

A335 Gr P11 Equivalent Material

 

A335 P11 3604 P1 621 SA335 P11 ABS 11 T11 KSTPA 23 STPA 23 K11597

 

Heat Treatment of ASTM P11 Round Pipe

 

P11  
  650

 

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