ASTM A335/ASME SA335 P91 High Pressure Steel Pipe

Product Description

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Standard: ASTM A335, ASME SA335
Equivalent Standards: EN 10216-2, ASTM A213, ASME SA213, GOST 550-75, NBR 5603
Material: P91, K91560
Equivalent Material: T91, K90901, X10CrMoVNb9-1, 1.4903

Steel Grade:
SA335 Grade P11 ASTM A335 Grade P11
SA335 Grade P22 ASTM A335 Grade P22
SA335 Grade P1 ASTM A335 Grade P1
SA335 Grade P5 ASTM A335 Grade P5
SA335 Grade P9 ASTM A335 Grade P9
SA335 Grade P91 ASTM A335 Grade P91

Steel Grade Pipe Tube Fittings Plate Forgings
1/2Mo A335 P1 A213 T1 A234 WP1   A182 F1
5Cr-1/2Mo A335 P5 A213 T5 A234 WP5 A387 GRADE 5 A182 F5
9Cr-1Mo A335 P9 A213 T9 A234 WP9 A387 GRADE 9 A182 F9
1 1/4 Cr-1/2Mo A335 P11 A213 T11 A234 WP11 A387 GRADE 11 A182 F11
2 1/4Cr-1Mo A335 P22 A213 T22 A234 WP22 A387 GRADE 22 A182 F22
9Cr-1Mo-V-Nb A335 P91 A213 T91 A234 WP91 A387 GRADE 91 A182 F91

All the pipe & fittings will be supplied with EN10204/3.1.B mill cert.

End User

  • P11 for power generation, petroleum, and other high temperature services
  • P22 for power generation, petroleum, and other high temperature services
  • P5 for petroleum
  • P9 for petroleum
  • P91 for power generation
  • P92 for power generation
  • P1 for boiler replacement and repair
C, %
Mn, %
P, %
S, %
Si, %
Cr, %
Mo, %
V, %
N, %
Ni, %
Al, %
Nb, %
0.08-0.12
0.3-0.6
0.02 max
0.01 max
0.2-0.5
8.0-9.5
0.85-1.05
0.18-0.25
0.03-0.07
0.4 max
0.04 max
0.06-0.10
Tensile Strength , MPa
Yield Strength, MPa
Elongation, %
Hardness, HB
585 min
415 min
20 min
250 max
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 A450
Hot rolled
Outside Diameter, mm
Tolerance, %

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 Drawn
Outside Diameter, mm
Tolerance, %
OD≤38.1
+20/-0
OD>38.1
+22/-0
ASTM A530
NPS
Outside Diameter, inch
Tolerance, %
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

Length: 5800mm; 6000mm; 6096mm; 11800mm; 12000mm; and so on.
Max length: 16000mm

Grade UNS C≤ Mn P≤ S≤ Si≤ Cr Mo
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 0.30~0.60 0.025 0.025 0.50 4.00~6.00 0.44~0.65
P5b K51545 0.15 0.30~0.60 0.025 0.025 1.00~2.00 4.00~6.00 0.44~0.65
P5c K41245 0.12 0.30~0.60 0.025 0.025 0.50 4.00~6.00 0.44~0.65
P9 S50400 0.15 0.30~0.60 0.025 0.025 0.50~1.00 8.00~10.00 0.44~0.65
P11 K11597 0.05~0.15 0.30~0.61 0.025 0.025 0.50~1.00 1.00~1.50 0.44~0.65
P12 K11562 0.05~0.15 0.30~0.60 0.025 0.025 0.50 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 2.65~3.35 0.80~1.60
P22 K21590 0.05~0.15 0.30~0.60 0.025 0.025 0.50 1.90~2.60 0.87~1.13
P91 K91560 0.08~0.12 0.30~0.60 0.020 0.010 0.20~0.50 8.00~9.50 0.85~1.05
P92 K92460 0.07~0.13 0.30~0.60 0.020 0.010 0.50 8.50~9.50 0.30~0.60

Note: (S)A335 P91 other chemical composition are : V 0.18~0.25; N 0.030~0.070; Ni ≤ 0.40; Al ≤ 0.04 ; Nb 0.06~0.10

(S)A335 P92 other chemical composition are : V 0.15~0.25; N 0.030~0.070; Ni ≤ 0.40; Al ≤ 0.04 ; Nb 0.04~0.09; W 1.5~2.00 ; B 0.001~0.006

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