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ASTM A 335/ A691 GR P12 Alloy Steel Seamless & EFW pipes

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ASTM A 335/ A691 GR P12 Alloy Steel Seamless & EFW pipes

Silver Tubes is one of the oldest Manufacturer, Exporter and Supplier of High Quality ASTM A 335/ A691 GR P12 Alloy Steel Seamless & EFW pipes . We provide a wide range of ASTM A 335/ A691 GR P12 Alloy Steel Seamless & EFW pipes in Seamless, Welded, SAW, LSAW, DSAW etc. Our range comprises of ASTM A 335/ A691 GR P12 Alloy Steel Seamless & EFW pipes . Available in different dimensions & grades, these ASTM A 335/ A691 GR P12 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 P12 Alloy Steel Seamless & EFW pipes as per client’s requirement. Silver Tubes is Approved Manufacturer & supplier of ASTM A 335/ A691 GR P12 Alloy Steel Seamless & EFW pipes.

Silver Tubes is a leading manufacturer and supplier of high-grade seamless pipes and EFW pipes having made up of different steel alloys. Our products are widely exported to established customers across the globe. With our integrated systems for the production of seamless pipes, our products are reached to the customers in time and are designed according to the industrial standards. Continuous tests are done to develop good quality in the products. ASTM A 335/ A691 GR P12 Alloy Steel Seamless & EFW Pipes refers to electric fusion welding pipe, which is used in welding dissimilar sheets and for melting refractory metals.

Description of the component:
EFW pipes can be defined as the type of pipe in which a specialized technology called electron fusion welding is used for giving the pipe a well-designed strength. By using the fusion welding in making of the pipes, the pipes get the ability to withstand high temperature and pressure. Also, pipes get the strength to develop corrosion-resistant properties. The construction of this pipe includes rolling the pipe into a thin cylinder and then welding it with a filler material. The applications of the EFW seamless pipes include chemical industries and the oil and gas industry.

Documentation and packaging:
Various documents are provided to the products like raw material certificate, corrosion-resistant certificate, and designing certificate so that authenticity is obtained in the products. The ASTM A 335/ A691 GR P12 Alloy Steel Seamless & EFW Pipes are packed into wooden cases so that safe transportation is done without mishandling.

ASTM A335 P12 Alloy steel Seamless Pipes supplier in india

  • Sizes (Seamless): 1/2” NB - 24” NB
  • Wall Thickness available:
  • Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.
  • Material Grades :
  • Alloy Steel Seamless Pipe :
  • ASTM A335 GR.P12, ASTM A335 GR.P5, ASTM A335 GR.P9, ASTM A335 GR.P12, ASTM A335 GR.P12,
    ASTM A335 GR.P22, ASTM A335 GR.P91
  • Seamless Tube
  • Alloy Steel Seamless Tube : A213 T1, T5, T9, T11, T12, T22, T91
  • Other Materials Testing :
  • NACE MR0175, H2 SERVICE, IBR, etc.
  • Dimensions :

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


ASTM A 335 GR P12 Heat Treatment Requirements

P5, P9, P11, and P22
GradeHeat Treatment TypeNormalizing 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]
P9Full or Isothermal Anneal
Normalize and Temper*****1250 [675]
P11Full or Isothermal Anneal
Normalize and Temper*****1200 [650]
P22Full or Isothermal Anneal
Normalize and Temper*****1250 [675]
P91Normalize and Temper1900-1975 [1040 - 1080]1350-1470 [730 - 800]
Quench and Temper1900-1975 [1040 - 1080]1350-1470 [730 - 800]

ASTM A 335 GR P12 Chemical Requirements

GradeP-5P-9P-11P-22P-91P-91 shall also include the following:
ElementUNS DesignationK41545S50400K11597K21590K91560
Carbon0.15 max0.15 max0.05 - 0.150.05 - 0.150.08 - 0.12V at 0.18 - 0.25
Manganese0.30 - 0.600.30 - 0.600.30 - 0.600.30 - 0.600.30 - 0.60N at 0.030 - 0.070
Phosphorous, max0.0250.0250.0250.0250.020Ni at 0.40 max
Sulfur, max0.0250.0250.0250.0250.010Al at 0.02 max
Silicon0.50 max0.25 - 1.000.50 - 1.000.50 max0.20 -0.50Cb at 0.06 - 0.10
Chromium4.00 - 6.008.00 - 10.001.00 - 1.501.90 - 2.608.00 - 9.50Ti at 0.01 max
Molybdenum0.45 -0.650.90 - 1.100.44 - 0.650.87 - 1.130.85 - 1.05Zr at 0.01 max

ASTM A 335 GR P12 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 P12 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)