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.
All Pipe is manufactured and inspected/tested to the relevant standards including
ASTM, ASME, API. P5, P9, P11, and P22 Grade Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing 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] 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 Heat Treatment Requirements
or
Tempering
Temperature Range F
[C]
ASTM A 335 GR P11 Chemical Requirements
ASTM A 335 GR P11 Tensile Requirements
Seamless
P-5
P-9
P-11
P-22
P-91
P91 shall not have a hardness
not exceeding 250 HB/265 HV [25HRC].
Tensile Strength, min., psi
ksi
60
60
60
60
85
MPa
415
415
415
415
585
Yield Strength, min., psi
ksi
30
30
30
30
60
MPa
205
205
205
205
415
ASTM A 335 GR P11 Permissible Variation in Wall Thickness
NPS [DN]
Designator
Tolerance,
% from Specified
Over
Under
1/8 to 2 1/2 [6 to
65] incl., all t/D ratios
20.0%
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)
