ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes

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IBR NACE MR0175 ASTM A 335 GR P11 ALLOY STEEL SEAMLESS PIPES

Silver Tubes is one of the oldest Manufacturer, Exporter and Supplier of High Quality ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes . We provide a wide range of ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes in Seamless, Welded, SAW, LSAW, DSAW etc. Our range comprises of ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes . Available in different dimensions & grades, these ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes are widely used in different industries like Dairy, Food processing, engineering, construction and many more. We also offer competitive range of ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes as per client’s requirement. Silver Tubes is Approved Manufacturer & supplier of ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes.

Silver Tubes are one of the leading exporter, manufacturer and stockiest of a very demanding product which is ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes in the domestic as well as the global market today. This type of pipe can be easily accessible by us in various grades, thicknesses, and sizes, specifications as demanded or needed by our esteemed clients. We comprise of professional and experienced team members to complete the ordered demands of our clients. We offer a broad range of ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes in welded, seamless, LSAW, SAW, DSAW, etc. this grade of seamless and EFW pipes are highly used in various industries such as dairy industry, food processing industry, engineering industry, construction industries, etc. all range of our pipes are inspected, tested or manufactured according to the relevant standard which includes API, ASTM, and ASME.

EFW Pipes:
EFW stands for Electric Fusion Welding steel pipes which refer to electric beam welding. The usage of high-speed movement of an electron beam directs the impact of kinetic energy, which heats the work piece so that it will leaved as melted to form a weld.

Details of ASTM A 335 GR P11 Alloy Steel Seamless pipes:
Alloy steels come with the substantial qualities of elements other than the carbon like silicon, chromium, nickel, molybdenum, manganese, tungsten, with a limited amount of other commonly accepted elements like sulfur, etc. With the addition of these alloying elements generally increase the strength, hardness and chemical resistance of end product.

ASTM A 335 GR P11 ALLOY STEEL SEAMLESS PIPES supplier in india

  • ASTM A 335 GR P11 Sizes (Seamless): 1/2” NB - 24” NB
  • ASTM A 335 GR P11 Wall Thickness available: Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.
  • ASTM A 335 GR P911 Material Grades :
  • ASTM A 335 GR P11 Alloy Steel Seamless Pipe :
  • ASTM A 335 GR P11 Other Materials Testing :
  • NACE MR0175, H2 SERVICE, IBR, etc.
  • ASTM A 335 GR P11 Dimensions :

All Pipe is manufactured and inspected/tested to the relevant standards including ASTM, ASME, API.


ASTM A 335 GR P11 Heat Treatment Requirements

P5, P9, P11, and P22

Grade

Heat Treatment Type

Normalizing Temperature Range F [C]

Subcritical Annealing
or Tempering
Temperature Range F

[C]

P5 (b,c)

Full or Isothermal Anneal

Normalize and Temper

*****

1250 [675]

Subcritical Anneal (P5c only)

*****

1325 - 1375 [715 - 745]

P9

Full or Isothermal Anneal

Normalize and Temper

*****

1250 [675]

P11

Full or Isothermal Anneal

Normalize and Temper

*****

1200 [650]

P22

Full or Isothermal Anneal

Normalize and Temper

*****

1250 [675]

P91

Normalize and Temper

1900-1975 [1040 - 1080]

1350-1470 [730 - 800]

Quench and Temper

1900-1975 [1040 - 1080]

1350-1470 [730 - 800]


ASTM A 335 GR P11 Chemical Requirements

Grade

P-5

P-9

P-11

P-22

P-91

P-91 shall also include the following:

Element

UNS Designation

K41545

S50400

K11597

K21590

K91560

Carbon

0.15 max

0.15 max

0.05 - 0.15

0.05 - 0.15

0.08 - 0.12

V at 0.18 - 0.25

Manganese

0.30 - 0.60

0.30 - 0.60

0.30 - 0.60

0.30 - 0.60

0.30 - 0.60

N at 0.030 - 0.070

Phosphorous, max

0.025

0.025

0.025

0.025

0.020

Ni at 0.40 max

Sulfur, max

0.025

0.025

0.025

0.025

0.010

Al at 0.02 max

Silicon

0.50 max

0.25 - 1.00

0.50 - 1.00

0.50 max

0.20 -0.50

Cb at 0.06 - 0.10

Chromium

4.00 - 6.00

8.00 - 10.00

1.00 - 1.50

1.90 - 2.60

8.00 - 9.50

Ti at 0.01 max

Molybdenum

0.45 -0.65

0.90 - 1.10

0.44 - 0.65

0.87 - 1.13

0.85 - 1.05

Zr at 0.01 max


ASTM A 335 GR P11 Tensile Requirements

Seamless
P-5P-9P-11P-22P-91P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].
Tensile Strength, min., psi
ksi6060606085
MPa415415415415585
Yield Strength, min., psi
ksi3030303060
MPa205205205205415

ASTM A 335 GR P11 Permissible Variation in Wall Thickness

NPS [DN] DesignatorTolerance, % from Specified
OverUnder
1/8 to 2 1/2 [6 to 65] incl., all t/D ratios20.0%12.5%
Above 2 1/2 [65], t/D < or = 5%22.5%12.5%
Above 2 1/2 [65], t/D > 5%15.0%12.5%
(t = Specified Wall Thickness; D = Specified Outside Diameter)