ASTM A335 P91 Alloy Steel Welded Pipe

ASTM A335 P91 Alloy Steel Welded Pipe manufacturer in India, ASTM A335 P91 Welded Pipe

Alloy Steel ASTM A335 UNS K91560 Welded Pipes, Alloy Steel Grade P91 Welded Pipe Supplier, P91 Welded Steel Pipe

Welded ASTM A335 P91 High Pressure Steel Pipe exporter in India, delaer of SA335 P91 Welded Pipe for MSL Make P91 Welded Pipe, JSL P91 Welded Steel Pipe, Tenaris SA335 P91 Welded Pipe, Manufacturer & supplier of ASME SA335 P91 High Pressure Steel Welded Pipe, ASTM A335 P91 Alloy Steel Welded Pipe manufacturer India

ASTM A335 P91 Alloy Steel Welded Pipes
ASTM A335 P91 Alloy Steel Welded Pipes
Alloy Steel Grade P91 Welded Pipes
Alloy Steel Grade P91 Welded Pipes
Grade P91 Alloy Steel Welded Pipe
Grade P91 Alloy Steel Welded Pipe
P91 Welded Pipe Suppliers

ASTM A335 P91 Alloy Steel Welded Pipe is widely used for oil & gas, power plant, nuclear power, high pressure boiler, high temperature superheater and reheater of high-temperature high-pressure pipeline and equipment. Here at Multi Metals India, we are proud to say we are one of the most comprehensive ASTM A335 P91 Welded Pipe, SA335 P91 Welded Pipe stockholders in India, with an almost unrivalled product range held under one roof. Alloy steel A335 P91 Welded Pipes are made by combining carbon steel with one or several alloying elements, such as manganese, silicon, nickel, titanium, copper, chromium and aluminum.

Multi Metals India has built very firm cooperation relationship with A335 P91 Welded Pipe mills or their sales agents. These Welded ASTM A335 P91 High Pressure Steel Pipe mills are JFE, SUMITOMO, V&M, TENARIS, BAOSTEEL, TPCO, CSST, CHENGDE etc.

RFQ

P91 Welded Pipe Material

Alloy Steel Welded Pipe Standard: ASTM A335, ASME SA335

Technique: Welded, Welded, hot rolled Galvanized and welded

Alloy Steel Welded Pipe relevant material: 16-50Mn, 27SiMn, 40Cr, 12-42CrMo, 16Mn12Cr1MoV, 27SiMn, 30CrMo, 15CrMo, 20G, Cr9Mo, 10CrMo910, 15Mo3, 15CrMoV, 35CrMoV, 45CrMo, 15CrMoG, 12CrMoV, 45Cr, 50Cr, 45CrNiM, P5, P9, P11, P22, P23, P91, P92, T11, T12, T22, T23, T91,T92 and so on.

ASTM A335 P91 Alloy Steel Welded Pipe Equivalent Standards: EN 10216-2, ASTM A213, ASME SA213, GOST 550-75, NBR 5603

Equivalent standards:
ASTM A989 Grade 9, ASTM A335 Grade P91, KA-STBA28

Alloy Steel Welded Pipe 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

ASTM A335 P91 Alloy Steel Welded Pipe Material: P91, K91560

Standard ASTM, BS, GB
Application Structure Pipe
Surface Treatment Black Galvanized Coated
Standard2 ASME B36.19M-1985, ASTM A252-1998, ASTM A450-1996, ASTM A523-1996, ASTM A53-2007, BS 1387, BS 6323, BS 6363, BS EN10296, GB/T 13793-1992, GB/T 3091-2001, GB/T3901, GB/T9711, ASTM A213-2001, ASTM A335-2006, DIN 17175, JIS G3458-2005, JIS G3462-2004, GB 5130
Special Pipe Thick Wall Pipe
Material Q195/Q215/Q235/Q345
Alloy Or Not Is Alloy
od 1/8” -24” (10.3mm-609.6mm) or 10*10-500*500mm
Wall Thickness 0.3mm-21.2mm,SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS, DIN, JIS standard thickness
Length 5.8m , 6m, 11.8m , 12m or acc to requirement
Ends 1) Plain  
2) Beveled   
3) Thread with Coupling or cap  
4) Chamfer  
5) Groove   
6) Screw  
End protector

1) Plastic pipe cap
2) Iron protector

Surface Treatment

1) Bared
2) Black Painted (varnish coating)
3) Galvanized
4) Oiled
5) PE, 3PE, FBE, corrosion resistant coating, Anti corrosion coating.

Delivery time 

15-30 days after deposit

Package

Bundles or as customer’s  requirements.

Delivery Container or Bulk carrier

ASTM A335 P91 Alloy Steel Welded Pipe Standards:

  • ASTM A335 – ASME SA335 – ‘Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service’
  • ASTM A213- ASME SA213 – ‘Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler,Superheater,and Heat-Exchanger Tubes’
  • ASTM A691- ASME SA691 – ‘Standard Specification for Carbon and Alloy Steel Pipe,Electric-Fusion-Welded for High-Pressure Service at High Temperatures’
  • ASTM A333- ASME SA333 – ‘Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications with Required Notch Toughness’
  • ASME B36.10 – ‘Welded and Seamless Wrought Steel Pipe’

RFQ

Steel Grade Welded Pipe Welded Tube Welded 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 Welded pipe & fittings will be supplied with EN10204/3.1.B mill cert.

RFQ

P91 Welded Pipe Specifications
  • ASTM A335 P91 Alloy Steel Welded Pipe Dimensions : ASTM, ASME and API
  • ASTM A335 P91 Alloy Steel Welded Pipe Standard : ASTM A 335 / ASME SA 335
  • ASTM A335 P91 Alloy Steel Welded Pipe Size : 1/2” NB to 36” NB
  • ASTM A335 P91 Alloy Steel Welded Pipe Schedule : SCH 10, SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules, upto 12mm thk
  • Outer Diameter : 19.05mm – 114.3mm
  • ASTM A335 P91 Alloy Steel Welded Pipe Wall Thickness : 2.0mm – 14 mm
  • Type : Welded
  • ASTM A335 P91 Alloy Steel Welded Pipe End : Plain End, Beveled End, Treaded
  • ASTM A335 P91 Alloy Steel Welded Pipe Form : Round, Square, Rectangular, Hydraulic Etc
  • ASTM A335 P91 Alloy Steel Welded Pipe Length : Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths

ASTM A335 Grade P91 AS Pipes, Alloy Steel P91 Welded Pipes Dealers, AS Gr P91 Rectangular Pipes, A335 P91 Welded Pipes Leading Manufacturers.

ASTM A335/ASME SA335 P91 High Pressure Welded Steel Pipe Outside Diameter & Tolerance

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 A335 Alloy Steel Welded Pipe End User

  • P11 Welded Pipe for power generation, petroleum, and other high temperature services
  • P22 Welded Pipe for power generation, petroleum, and other high temperature services
  • P5 Welded Pipe for petroleum
  • P9 Welded Pipe for petroleum
  • P91 Welded Pipe for power generation
  • P92 Welded Pipe for power generation
  • P1 Welded Pipe for boiler replacement and repair
P91 Welded Pipe Cost

You will find here High Quality & Best Price in comparison to China, Check Live SA335 P91 Welded Pipe Price

P91 Welded Pipe Price Comparison as per Top Manufacturers

ERW TOP MANUFACTURERS ALLOY STEEL A335 P91 WELDED PIPE PRICE LIST
SIZE" SIZE NB MSL SURYA JL ISR ZNTH WLSP ASIAN TW
1/2 15 618 654 647 610 610 640 632
3/4 20 603 640 632 610 596 625 632
1 25 588 625 618 610 581 610 618
1.25 32 588 625 618 610 581 610 618
1.5 40 588 625 618 610 581 610 618
2 50 588 625 618 610 581 610 618
2.5 65 588 625 618 610 581 610 618
3 80 588 625 618 610 581 610 618
3.5 90 588 625 618 610 581 610 618
4 100 588 625 618 610 581 610 618
5 125 588 625 618 610 581 610 618
6 150 588 625 618 610 581 610 618
8 200 588 625 618 610 581 618
10 250 588 625 618 581 618
12 300 588 625 618 581 618
14 350 603 640 596 618
16 400 603 640 596 618
18 450 618 610 618
20 500 618 610 618
22 550 618 618
24 600 618 618

All Above P91 Welded Steel Pipe Prices are in USD/Ton
Additional Cost
Hot Dip Galvanising Cost 400$/Tons
Double Random Length Cost: 2% Extra
3LPE 300$/tons
Fix length Cost: 5% Extra
Inspection 2% Extra
MOQ- Minimum Order Quantity 20 Ton per size.

RFQ

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P91 Welded Pipe Schedule

ASTM A335 P91 Alloy Steel Welded Pipe Schedules (according to ASME/ANSI B36.10M)

ASTM A335 P91 Alloy Steel Welded Pipe Schedules (according to ASME/ANSI B36.10M)

RFQ

P91 Welded Pipe Welding Procedure

Welding P91 Welded Pipe generally requires preheating the joint, maintaining interpass temperatures, hydrogen bakes, and postweld heat treatment (PWHT). Preheating, typically to 400 to 500 degrees F, drives off moisture and thereby reduces hydrogen.

P91 Welded Pipe Wall Thickness

Alloy Steel ASTM A335 UNS K91560 Welded Pipes, Alloy Steel Grade P91 Welded Pipes Supplier in India.

ASTM A335 P91 Welded Pipe Wall Thickness: Schedule: sch 10, sch 20, sch 30, sch std, sch 40, sch 60, sch xs, sch 80, sch 100, sch 120, sch 140, sch 160, sch xxs P91 Welded Pipe Specials: up to 5″ in wall thickness

ASTM A335/ASME SA335 P91 High Pressure Welded Steel Pipe Wall thickness & Tolerance

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
Keyword: High Pressure Welded Steel Pipe, Boiler Steel Welded Pipe, ASME SA335, P91, ASTM A335

RFQ

P91 Welded Pipe Weight Chart

Black: Wall thickness in inches.

Orange: Steel weight per foot in pounds.
Pipe
Size
O.D. in
Inches
5s 5 10s 10 20 30 40s &
STD
40 60 80s &
XH
80 100 120 140 160 XXH
1/8″ 0.405   0.035
0.1383
0.049
0.1863
0.049
0.1863
    0.068
0.2447
0.068
0.2447
  0.095
0.3145
0.095
0.3145
         
1/4″ 0.540   0.049
0.2570
0.065
0.3297
0.065
0.3297
    0.088
0.4248
0.088
0.4248
  0.119
0.5351
0.119
0.5351
         
3/8″ 0.675   0.049
0.3276
0.065
0.4235
0.065
0.4235
    0.091
0.5676
0.091
0.5676
  0.126
0.7388
0.126
0.7388
         
1/2″ 0.840 0.065
0.5383
0.065
0.5383
0.083
0.6710
0.083
0.6710
    0.109
0.8510
0.109
0.8510
  0.147
1.088
0.147
1.088
      0.187
1.304
0.294
1.714
3/4″ 1.050 0.065
0.6838
0.065
0.6838
0.083
0.8572
0.083
0.8572
    0.113
1.131
0.113
1.131
  0.154
1.474
0.154
1.474
      0.218
1.937
0.308
2.441
1″ 1.315 0.065
0.8678
0.065
0.8678
0.109
1.404
0.109
1.404
    0.133
1.679
0.133
1.679
  0.179
2.172
0.179
2.172
      0.250
2.844
0.358
3.659
1 1/4″ 1.660 0.065
1.107
0.065
1.107
0.109
1.806
0.109
1.806
    0.140
2.273
0.140
2.273
  0.191
2.997
0.179
2.997
      0.250
3.765
0.382
5.214
1 1/2″ 1.900 0.065
1.274
0.065
1.274
0.109
2.085
0.109
2.085
    0.145
2.718
0.145
2.718
  0.200
3.631
0.200
3.631
      0.281
4.859
0.400
6.408
2″ 2.375 0.065
1.604
0.065
1.604
0.109
2.638
0.109
2.638
    0.154
3.653
0.154
3.653
  0.218
5.022
0.218
5.022
      0.344
7.462
0.436
9.029
2 1/2″ 2.875 0.083
2.475
0.083
2.475
0.120
3.531
0.120
3.531
    0.203
5.793
0.203
5.793
  0.276
7.661
0.276
7.661
      0.375
10.01
0.552
13.70
3″ 3.500 0.083
3.029
0.083
3.029
0.120
4.332
0.120
4.332
    0.216
7.576
0.216
7.576
  0.300
10.25
0.300
10.25
      0.438
14.32
0.600
18.58
3 1/2″ 4.000 0.083
3.472
0.083
3.472
0.120
4.937
0.120
4.937
    0.226
9.109
0.226
9.109
  0.318
12.51
0.318
12.51
        0.636
22.85
4″ 4.500 0.083
3.915
0.083
3.915
0.120
5.613
0.120
5.613
    0.237
10.79
0.237
10.79
  0.337
14.98
0.337
14.98
  0.438
19.00
  0.531
22.51
0.674
27.54
4 1/2″ 5.000             0.247
12.54
    0.355
17.61
           
5″ 5.563 0.109
6.349
0.109
6.349
0.134
7.770
0.134
7.770
    0.258
14.62
0.258
14.62
  0.375
20.78
0.375
20.78
  0.500
27.04
  0.625
32.96
0.750
38.55
6″ 6.625 0.109
7.585
0.109
7.585
0.134
9.290
0.134
9.290
    0.280
18.97
0.258
18.97
  0.432
28.57
0.432
28.57
  0.562
36.39
  0.719
43.35
0.864
53.16
7″ 7.625             0.301
23.54
    0.500
38.04
          0.875
63.08
8″ 8.625 0.109
9.914
0.109
9.914
0.148
13.40
0.148
13.40
0.250
22.36
0.277
24.70
0.322
28.55
0.322
28.55
0.406
35.64
0.500
43.39
0.500
43.39
0.594
50.95
0.719
60.71
0.812
67.76
0.906
74.79
0.875
72.42
9″ 9.625             0.342
33.91
    0.500
48.73
           
10″ 10.75 0.134
15.19
0.134
15.19
0.165
18.65
0.165
18.65
0.250
28.04
0.307
34.24
0.365
40.48
0.365
40.48
0.500
54.74
0.500
54.74
0.594
64.43
0.719
77.03
0.844
82.29
1.000
104.1
1.125
115.6
1.000
104.1
11″ 11.75             0.375
45.56
    0.500
60.08
           
12″ 12.75 0.156
21.07
0.165*
22.18
0.180
24.16
0.180
24.16
0.250
33.38
0.330
43.77
0.375
49.56
0.406*
53.52
0.562
73.15
0.500
65.42
0.688*
88.63
0.844
107.3
1.000
125.5
1.125
136.7
1.312
160.3
1.000
125.5
14″ 14.00 0.156
23.07
  0.188
27.73
0.250
36.71
0.312
45.61
0.375
54.57
0.375
54.57
0.438
63.44
0.594
85.05
0.500
72.09
0.750
106.1
0.938
130.9
1.094
150.8
1.250
170.2
1.406
189.1
 
16″ 16.00 0.165
27.90
  0.188
31.75
0.250
42.05
0.312
52.27
0.375
62.58
0.375
62.58
0.500
82.77
0.656
107.5
0.500
82.77
0.844
136.6
1.031
164.8
1.219
192.4
1.438
223.6
1.594
245.3
 
18″ 18.00 0.165
31.43
  0.188
35.76
0.250
47.39
0.312
58.94
0.438
82.15
0.375
70.59
0.562
104.7
0.750
138.2
0.500
93.45
0.938
170.9
1.156
208.0
1.375
244.1
1.562
274.2
1.781
308.5
 
20″ 20.00 0.188
39.78
  0.218
46.05
0.250
52.73
0.375
78.60
0.500
104.1
0.375
78.60
0.594
123.1
0.812
166.4
0.500
104.1
1.031
208.9
1.281
256.1
1.500
296.4
1.750
341.1
1.969
379.2
 
22″ 22.00 0.188
43.80
  0.218
50.71
0.250
58.07
0.375
86.61
0.500
114.8
0.375
86.61
  0.875
197.4
0.500
114.8
1.125
250.8
1.375
302.9
1.625
353.6
1.875
403.0
2.125
451.1
 
24″ 24.00 0.218
55.37
  0.250
63.41
0.250
63.41
0.375
94.62
0.562
140.8
0.375
94.62
0.687
171.2
0.968
238.4
0.500
125.5
1.281
296.4
1.531
367.4
1.812
429.4
2.062
483.1
2.344
542.1
 
26″ 26.00       0.312
85.60
0.500
136.170
  0.375
102.6
    0.500
136.2
           
28″ 28.00       0.312
92.26
0.500
146.850
0.625
182.7
0.375
110.6
    0.500
146.9
           
30″ 30.00 0.250
79.43
  0.312
98.93
0.312
98.93
0.500
157.530
0.625
196.1
0.375
118.7
    0.500
157.5
           
32″ 32.00       0.312
105.6
0.500
168.2
0.625
209.4
0.375
126.7
0.688
230.1
  0.500
168.2
           
34″ 34.00       0.312
112.3
0.500
178.9
0.625
222.8
0.375
134.7
0.688
244.8
               
36″ 36.00       0.312
118.9
  0.625
236.1
0.375
142.7
0.750
282.4
  0.500
189.6
           
P91 Welded Pipe Material Composition

ASTM ASME (S)A-335/(S)A-335M Grade and chemical composition 

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

Standard high-temperature structural steels
EN designation ASTM
grade
Chemical composition (mass%)
C Cr Ni Mo V Nb Others
CMn-steels
P 235 A max.
0.16
max.
0.30
max. 0.30 max. 0.08     max. 0.30 Cu
P 355   max. 0.22         0.015 –0.10  
Mo Steels
16Mo3   0.12 –0.20     0.25 –0.35      
9NiCuMoNb5-6-4   max. 0.17 max. 0.30 1.00 –1.30 0.25 –0.50   0.015–0.045 0.50-0.80 Cu
CrMo-steels
13CrMo4-5 T/P11 0.10 –0.17 0.70 –1.10   0.45 –0.65      
11CrMo9-10 T/P22 0.08 –0.15 2.00 –2.50   0.90 –1.20      
8CrMoNiNb9-10   max. 0.10 2.00 –2.50 0.30 –0.80 0.90 –1.10   min. 10x%C  
7CrMoVTiB10-10 T/P24 0.05 –0.10 2.20 –2.60   0.90 –1.10 0.20 –0.30   0.05-0.10 Ti
15-70 ppm B
  T/P23 0.04 –0.10 1.90 –2.60   0.05 –0.30 0.20 –0.30 0.02 –0.08 1.45-1.75 W
9-12% Cr-steels
X11CrMo9-1 T/P9 0.08 –0.15 8.0 –10.0   0.90–1.00      
X20CrMoNiV11-1   0.17 –0.23 10.0 –12.5 0.30 –0.80 0.80 –1.20 0.25 –0.35    
X10CrMoVNb9-1 T/P91 0.08 –0.12 8.00 –9.50 max. 0.40 0.85 –1.05 0.18 –0.25 0.06 –0.10  
X11CrMoWVNb9-1-1 T/P911 0.09 –0.13 8.50 –9.50 0.10 –0.40 0.90 –1.10 0.18 –0.25 0.06 –0.10 0.90-1.10 W
  T/P92 0.07 –0.13 8.50 –9.50 max. 0.40 0.30 –0.60 0.15 –0.25 0.04 –0.09 1.50-2.00 W
  T/P122 0.07 –0.13 10.0 –12.5 max. 0.50 0.25 –0.60 0.15 –0.30 0.04 –0.10 0.30-1.70 Cu
1.50-2.50 W

Heat Treatment Requirements
Grade Heat Treatment Type
P5, P9, P11, and P22
Normalizing Temperature Range F [C] Subcritical Annealing or Tempering
Temperature Range F [C]
A335 P5 (b,c) Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
Subcritical Anneal (P5c only) ***** 1325 – 1375 [715 – 745]
A335 P9 Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
A335 P11 Full or Isothermal Anneal
Normalize and Temper ***** 1200 [650]
A335 P22 Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
A335 P91 Normalize and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]
Quench and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]

RFQ

P91 Welded Pipe Failure In China

As per an incident of Pipe Failure in China in Dec 2006, you can see at the second picture there is no evidence of any ductility in this material. This was supposed to be seamless Grade 91 pipe material. This could imply there was either a seam weld (preferred path of failure) at this location or a pre-existing flaw (hard to tell from the photo) from fabrication.

P91 Welded Pipe Failure In China
P91 Welded Pipe Failure In China Photo1
P91 Welded Pipe Failure In China
P91 Welded Pipe Failure In China Photo2
P91 Welded Pipe Stock & Price
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