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ISO Approved Manufacturer & Exporter of ASTM A 335/ A691 GR P9 Alloy Steel Seamless & EFW Pipes.

Global Supplier of High Quality Alloy Steel P9 Seamless Pipe, Alloy Steel Pipe P9, A335 P9 Alloy Steel Seamless Pipe, ASTM A335 P9 High Pressure Steel Pipe, ASTM A691 Alloy Steel EFW Pipe, ASME SA335 Grade P9 Alloy Steel Pipe Supplier in Mumbai, India.


A335 P9 material composition consists of Silicon(max.) 0.50, Molybdenum (0.45 - 0.65), Carbon(max.) 0.15, Chromium (4.00 - 6.00), and Manganese (0.30 - 60). It has a UNS designation of S50400. The minimum yield strength of A335 P9 pipes is 205 MPa, the minimum tensile strength is 415 MPa, and the minimum elongation % is 30/20 L/T. Surface treatment options for A335 P9 include phosphating, varnishing, shot blasting, oil-dipping, and passivation. Flattening tests, surface and dimension tests, mechanical properties tests, hardness tests, chemical composition inspections, and bending tests are all used to test and inspect A335 P9 pipes, among other methods.

The applications for alloy steel ASTM A335 P9 pipe are many. They are found all over the globe in various sectors, including electric power, petroleum, boilers, chemicals, oil and gas, and many other fields. One of the reasons why A335 P9 pipe is in such high demand in various applications is that it has good corrosion resistance and is very resistant to extreme temperatures, both high and low in temperature. When it comes to flanging or bending and several other related applications like fusion welding, the A335 P9 pipe is unsurpassed in its performance. It is important to note that the A335 P9 pipe has been designed for high-temperature applications.


A335 P9 alloy Steel Pipe

A335 P9 pipe is made of steel. Thermal conductivity will vary from a range of 15.1 at 1500 degrees Fahrenheit to 21 at 800 degrees Fahrenheit to 23.5 at 70 degrees Fahrenheit. For example, the thermal conductivity may be 6.4 at 70 degrees Fahrenheit, 6.5 at 100 degrees Fahrenheit, 7.3 at 500 degrees Fahrenheit, and even at 7.3 degrees Fahrenheit, the thermal conductivity could still be 550 degrees Fahrenheit. Depending on the value of 7, it might be as low as 600, as high as 850, or even higher than 900. At 8.1, it may be as high as 1000 or even as high as 1050. AISI 335 P9 Alloy Steel Pipe is a kind of Chrome-Moly Pipe that is the industry standard for seamless ferritic Alloy-Steel Pipe made in nominal or minimum wall thickness for use in high-temperature applications.

Alloy Steel P9 Seamless Pipes, Alloy Steel UNS S50400 Pipes, Seamless Ferritic Alloy-Steel P9 Pipe, Alloy Steel ASTM A335 Grade P9 Seamless Pipe Manufacturer, P9 Alloy Steel Boiler Steel Pipe Distributor, P9 High Pressure Steel Pipe Exporter in India.

Specification Chart of A335 P9 Alloy Steel Seamless Pipe

Specifications A335 / SA335
Standard AISI, DIN, ASTM, EN, GB, JIS, ASME
Sizes (Welded) 5.0 mm - 1219.2 mm
Schedule Chart Schedule 10, XXS, 5, 40, 80S, 80, 160, XS Alloy Steel P9 Pipe Supplier
Origin Korean, European, Indian, US, Ukraine, Japanese, Russian
International standards BS -UNI, ASTM/ASME, GOST, EN, DIN -NF A, JIS, ISO, GB 5310
Finish Polished, Annealed & Pickled, Bright & Annealed, etc
End Plain End, Beveled End, Treaded.
Type Fabricated / ERW/ Seamless / CDW / EFW / DOM / Welded / CEW Pipes
Export to Thailand, Oman, Germany, Greece, Netherlands, Philippines, Romania, Qatar, Jordan, Kuwait, Italy, Egypt, United Arab Emirates (UAE), France, Australia, Mexico, Singapore, Indonesia, Turkey, Nepal, United Kingdom (UK), Colombia, Taiwan, Kenya, Vietnam, Pakistan, Chile, South Africa, United States (USA), Brazil, Saudi Arabia (KSA), Myanmar (Burma), Nigeria, Bangladesh, Iran, Japan, Sri Lanka, Belgium, Spain, Iraq Poland, Canada, China, South Korea, Hong Kong, Malaysias
Size range 5.0 milimeter - 1219.2 milimeter
Outer Diameter Sizes up to 12" NB, 6.00 MM Other Diameter up to 250 milimeter Other Diameter
Form Hollow, Square, Coiled, Rectangular, Round, “U” Shape, Hydraulic, Straight Pipes etc.
Additional Testing Provided By Supplier NACE TM0177, NACE MR0175, NACE TM0284, SSC TEST, HIC TEST, H2 SERVICE, IBR, etc.
Thickness 0.3milimeter – 50 milimeter
Length Single Random, Double Random, Cut length

Equivalent Material of ASTM A335 P9 Alloy Steel

ASTM JIS G 3458 ASME UNS BS DIN ISO NK ABS LRS
A335 P9 STPA 26 SA335 P9 S50400 3604 P1 629-470 2604 II TS38

Chemical Composition Properties of ASTM A335 P9

Cr% C% P% S% Mo% Mn% Si%
4.00-6.00 0.015 max 0.025 max 0.025 max 0.45-0.65 0.30-0.60 0.50 max

Mechanical Properties of ASME SA335 P9 Seamless Pipe

Yield Strength, MPa Tensile Strength, MPa Elongation, %
205 min 415 min 30 min

Alloy Steel Pipes & Tubes

LSAW Pipe

HSAW Pipe

SSAW Pipe

Outside Diameter of ASTM A335 P9 Pipe

We are Alloy Steel P9 Square Pipe Supplier in Hot and cold drawn.

ASTM A450 Hot rolled O.D., 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 O.D., 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 O.D., 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%

Thickness Chart of ASME SA335 P9 Pipe

ASTM A450 Hot rolled O.D., 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 O.D., mm Tolerance, %
OD≤38.1 +20/-0
OD>38.1 +22/-0
ASTM A530 NPS O.D., 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

Weight Table of ASTM A335 Gr P9 Welded Pipe

Size NPS O.D. I.D. Wall Thickness Standard to XXHY Wgt per Foot Section Modulus Sch. Gallon Capacity Per Linear Foot
1/2 0.84 0.622 0.109 STD 0.85 .0407 40 .0158
0.546 0.147 XHY 1.09 .0478 80 .0122
0.464 0.188 1.31 .0528 160 .0088
0.252 0.294 XXHY 1.72 .0577 .0026
3/4 1.05 0.824 0.113 STD 1.13 .0705 40 .0277
0.742 0.154 XHY 1.48 .0853 80 .0225
0.612 0.219 1.95 .1006 160 .0153
0.434 0.308 XXHY 2.44 .1103 .0077
1 1.315 1.049 0.133 STD 1.68 .1328 40 .0449
0.957 0.179 XHY 2.17 .1606 80 .0374
0.815 0.250 2.85 .1904 160 .0271
0.599 0.358 XXHY 3.66 .2136 .0146
1 1/4 1.66 1.380 0.140 STD 2.27 .2346 40 .0777
1.278 0.191 XHY 3.00 .2913 80 .0666
1.160 0.250 3.77 .3421 160 .0549
0.896 0.382 5.22 .4110 .0328
1 1/2 1.90 1.610 0.145 STD 2.72 .3262 40 .1058
1.500 0.200 XHY 3.63 .4118 80 .0918
1.338 0.281 4.86 .5079 160 .0730
1.100 0.400 6.41 .5977 .0494
2 2.375 2.157 0.109 2.64 .4205 10 .1898
2.067 0.154 STD 3.66 .5606 40 .1743
1.939 0.218 XHY 5.03 .7309 80 .1534
1.875 0.250 5.68 .8045 .1434
1.813 0.281 6.29 .8666 .1344
1.687 0.344 7.47 .9806 160 .1161
1.503 0.436 XXHY 9.04 1.1043 .0922
2 1/2 2.875 2.635 0.120 3.53 .6870 10 .2833
2.469 0.203 STD. 5.80 1.0640 40 .2487
2.443 0.216 6.14 1.1169 .2435
2.375 0.250 7.02 1.2468 .2301
2.323 0.276 XHY 7.67 1.3386 80 .2202
2.125 0.375 10.02 1.6371 160 .1842
1.771 0.552 XXXHY 13.71 1.9971 .1280
3 3.50 3.260 0.120 4.34 1.0411 .4336
3.188 0.156 5.58 1.3122 .4147
3.156 0.172 6.12 1.4265 .4064
3.124 0.188 6.66 1.5342 .3984
3.068 0.216 STD. 7.58 1.7241 40 .3840
3.000 0.250 8.69 1.9372 .3672
2.938 0.281 9.67 2.1207 .3521
2.900 0.300 XHY 10.26 2.2253 80 .3431
2.624 0.438 14.34 2.8774 160 .2811
2.300 0.600 XXHY 18.6 3.4243 .2158
3 1/2 4.0 3.760 0.120 4.98 1.3776 10 .5768
3.548 0.226 STD. 9.12 2.3939 140 .5136
3.500 0.250 10.02 2.6001 .4998
3.438 0.281 11.17 2.8562 .4821
3.364 0.318 XHY 12.52 3.1400 80 .4617
2..728 0.636 XXHY 22.87 4.8795 .3085
4 4.5 4.260 0.120 5.62 1.7612 10 .7404
4.188 0.156 7.24 2.2354 .7156
4.124 0.188 8.67 2.6296 .6942
4.094 0.203 9.32 2.8173 .6838
4.062 0.219 10.02 3.0184 .6725
4.026 0.237 STD. 10.80 3.2145 40 .6613
4.000 0.250 11.36 3.3611 .6528
3.938 0.281 12.67 3.7021 60 .6326
3.876 0.312 13.97 4.0273 .6126
3.826 0.337 XHY 15.00 4.2713 80 .5972
3.624 0.438 19.02 5.1790 120 .5361
3.438 0.531 22.53 5.8997 160 .4822
3.152 0.674 XXHY 27.57 6.7927 .4054
5 5.563 5.187 0.188 10.80 4.1161 1.0979
5.125 0.219 12.51 4.7279 1.0716
5.047 0.258 STD. 14.63 5.4500 40 1.0391
5.001 0.281 15.87 5.8644 1.0204
4.939 0.312 17.51 6.4074 .99647
4.875 0.344 19.19 6.9358 .9696
4.813 0.375 XHY 20.80 7.4300 80 .9449
4.563 0.500 27.06 9.2534 120 .8495
4.313 0.625 32.99 10.7976 160 .7590
4.063 0.750 XXHY 38.59 12.0954 .6734
6 6.625 6.407 0.109 7.59 3.5769 5 1.6748
6.357 0.134 9.30 4.3475 10 1.6488
6.313 0.156 10.79 5.0107 1.6260
6.249 0.188 12.94 5.9351 1.5937
6.219 0.203 13.94 6.3804 1.5780
6.187 0.219 15.00 6.8261 1.5620
6.125 0.250 17.04 7.6905 1.5306
6.065 0.280 STD. 18.99 8.4958 40 1.5008
6.001 0.312 21.06 9.3416 1.4688
5.937 0.344 23.10 10.111 1.4391
5.875 0.375 25.05 10.893 1.4082
5.761 0.432 XHY 28.60 12.224 80 1.3541
5.625 0.500 32.74 13.711 1.2909
5.501 0.562 36.43 14.9806 120 1.2346
5.375 0.625 40.09 16.1821 1.1787
5.187 0.719 45.39 17.8243 160 1.0977
4.897 0.864 XXHY 53.21 20.025 .9784
4.625 1.000 60.13 21.7719 .8727
4.375 1.125 66.14 23.1237 .7809

Size Chart of A335 Gr P9 Cold Drawn pipes

Looking for a Bulk Suppliers of ASTM A335 P9 Chrome Pipe in various sizes and thickness.

O.D. x Thickness(mm) O.D x Thickness(mm) O.D x Thickness(mm)
38.1 x 3.2 76.2 x 4.0 57.0 x 4.9
38.1 x 4.0 76.2 x 5.0 57.0 x 6.3
38.1 x 6.3 76.2 x 6.3 57.0 x 7.9
42.4 x 3.2 82.5 x 4.5 60.3 x 3.2
42.4 x 4.0 88.9 x 3.2 60.3 x 3.6
44.5 x 3.2 88.9 x 3.6 60.3 x 5.0
44.5 x 6.3 88.9 x 4.0 63.5 x 3.2
48.3 x 3.2 101.6 x 3.6 63.5 x 3.6
48.3 x 3.6 101.6 x 4.5 63.5 x 4.0
50.8 x 4.5 101.6 x 6.3 63.5 x 6.3
51.0 x 3.2 114.3 x 3.6 63.5 x 7.9
51.0 x 3.6 114.3 x 5.0 70.0 x 3.2
51.0 x 6.3 139.7 x 4.0 70.0 x 3.6
57.0 x 3.2 139.7 x 5.0 70.0 x 6.3
57.0 x 3.6 139.7 x 6.3 76.2 x 3.6

Heat Treatment of Alloy Steel A335 P9

Grade Treatment Type Normalizing Temp. Range F [C] Subcritical Annealing or Tempering
Temp. Range F [C]
P9 Normalize and Temper ***** 1250 [675]
Full or Isothermal Anneal    

Type of ASME SA335 Grade P9 Alloy Steel Pipe

ERW pipe
  • ERW pipe
  • Welded Pipe
  • Welded Pipe
  • Seamless Pipe
  • Seamless Pipe

  • Cost Chart of ASTM A335 P9 ERW Pipe

    Size" JSL Make MSL Make ISMT make
    1.5" 3,757.35 3,750.00 3,742.65
    1/2" 4,272.06 4,264.71 4,257.35
    1.25" 3,860.29 3,852.94 3,845.59
    3/4" 4,051.47 4,044.12 4,036.76
    1" 3,904.41 3,897.06 3,889.71

    ASTM A335 / SA335 Alloy Steel P9 Seamless Pipes other Available Types

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    Grade P9 Chrome Moly Seamless Pipes Alloy Steel P9 Seamless Pipes Supplier
    AS Grade P9 Seamless Pipe ASTM A691 Alloy Steel Pipes
    Alloy Steel UNS S50400 Pipes Alloy Steel Gr. P9 High Pressure Steel Pipe
    ASTM A335 Grade P9 Pipe AS P9 Seamless Pipes Stockiest
    Chrome Moly P9 Pipe Exporter ASME SA335 Alloy Steel P9 Pipe Dealer

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