ASTM A335 Grade P91 NACE Alloy Seamless Pipes

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ASTM A335 Grade P91 NACE Alloy Seamless Pipes

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Karma Piping is one of the major Indian manufacturers, exporter & suppliers of ASTM A335 Grade P91 NACE Alloy Seamless Pipes & OCTG, CRA (Corrosion-Resistant Alloy) Seamless Tubes, Stainless Steel , Super Duplex , Duplex , Welded & Semaless, Carbon Steel Seamless Pipes, Tubes, Capillary Pipes & ‘U’ Tubes for applications in oil & gas, LNG, Thermal & Nuclear Power Plants, Chemical Industries, Fertilizers Plants, (petro) chemical, shipbuilding, desalination, water treatment, energy industries, EPC and Pipes for General Engineering Purpose.

Karma Piping operates according to an ISO 9001:2008 certified quality programme. A complete range of testing facilities on-site contributes to consistent quality control.

 

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ASTM A335/A335M-P91 high temperature ferritic alloy steel seamless P91

Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation Min (vertical bar specimen )% ① Elongation Min (round bar specimens )% Squash
ASTM A335/A335M-03 "high temperature ferritic alloy steel seamless" P1, P2 ≥ 205 ≥ 380 30 22 H
P12 ≥ 220 ≥ 415 30 22 H
P23 ≥ 400 ≥ 510 20 20 H
P91 ≥ 415 ≥ 585 20 20 H
Other ≥ 205 ≥ 415 30 22 H
Note: ① using the vertical bar specimens, the wall thickness of less than 8mm, each reduction 0.8mm, P23, P91 should subtract the base elongation of 1.0%, 1.5%, minus all other grades.
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation% Squash  
 
ASTM A500-2001 "Structural carbon steel cold-formed and shaped circular cross-section welded steel pipe and seamless steel pipe." Grade A ≥ 228 ≥ 310 ≥ 25 H  
Grade B ≥ 290 ≥ 400 ≥ 23 H  
Grade C ≥ 317 ≥ 427 ≥ 21 H  
Grade D ≥ 250 ≥ 400 ≥ 23 H  
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation% Squash Flaring
ASTM A556M-96 "water heater with carbon steel cold drawn seamless steel tubes." A2 ≥ 180 ≥ 320 ≥ 35 H H
B2 ≥ 260 ≥ 410 ≥ 30 H H
C2 ≥ 280 ≥ 480 ≥ 30 H H
Standard Steel grade  Yield strength Tensile strength Elongation (%) ①    
   
JIS G 3473-1988 "Carbon steel cylinder" STC370 ≥ 215 ≥ 370 ≥ 30 Note: ① thickness <8mm pipe, elongation is reduced by the minimum thickness at 1mm, to subtract the elongation of 1.5%.
STC440 ≥ 305 ≥ 440 ≥ 10
STC510A ≥ 380 ≥ 510 ≥ 10
STC510B ≥ 380 ≥ 510 ≥ 15
STC540 ≥ 390 ≥ 540 ≥ 20
STC590A ≥ 490 ≥ 590 ≥ 10
STC590B ≥ 490 ≥ 590 ≥ 15
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation %① Squash  
 
JIS G 3467-1988 "furnace with steel." STF410 ≥ 245 ≥ 410 ≥ 24 0.08  Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
STFA12 ≥ 205 ≥ 380 ≥ 24
STFA22 ≥ 205 ≥ 410 ≥ 24
STFA23 ≥ 205 ≥ 410 ≥ 24
STFA24 ≥ 205 ≥ 410 ≥ 24
STFA25 ≥ 205 ≥ 410 ≥ 24
STFA26 ≥ 205 ≥ 410 ≥ 24
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation %① Squash  
 
JIS G 3462-1988 "boilers, heat exchangers used in steel pipe." STBA12 ≥ 205 ≥ 380 ≥ 30 0.08  
Other ≥ 205 ≥ 410 ≥ 30  
 Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
Standard Steel grade  Wall thickness  mm Yield strength M Pa Tensile M Pa Elongation% ① Flattening / Flaring
JIS G 3461-1988 "boilers, heat exchangers used in carbon steel." STB340 ≥ 8 ≥ 175 ≥ 340 ≥ 35 H
STB410 ≥ 8 ≥ 255 ≥ 410 ≥ 25 H
STB510 ≥ 8 ≥ 295 ≥ 510 ≥ 25 H
 Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation (vertical bar specimen ) %① Elongation  ( round bar specimens )% Squash Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
JIS G 3456-1988 "high carbon steel pipes." STPT370 ≥ 215 ≥ 370 ≥ 30 ≥ 28 0.08
STPT410 ≥ 245 ≥ 410 ≥ 2 5 ≥ 24 0.07
STPT480 ≥ 275 ≥ 480 ≥ 2 5 ≥ 22
Standard Steel grade  Yield strength Tensile strength Elongation  ( tube sections and longitudinal strips sample) % ① Elongation (round bar specimens )% Squashed or bent
JIS G 3455-1988 "high carbon steel pipes." STS370 ≥ 215 ≥ 370 ≥ 30 ≥ 28 H
STS410 ≥ 245 ≥ 410 ≥ 25 ≥ 24 H
STS480 ≥ 275 ≥ 480 ≥ 25 ≥ 22 H
 Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
Standard Steel grade  Yield strengthM P a Tensile M Pa Elongation  ( vertical bar specimen )% ① Elongation  ( round bar specimens )% Squash
JIS G 3454-1988 "pressure pipes carbon steel pipe." STPG370 ≥ 215 ≥ 370 ≥ 30 ≥ 28 0.08
STPG410 ≥ 245 ≥ 410 ≥ 2 5 ≥ 24 0.07
 Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.

P91 alloy tube

Material Implementation of standards Specification Quantity
P91 GB5310-2008 426 * 18 3
P91 ASTMA335-95a 426 * 18 2
P91 GB5310-2008 426 * 16 3
P91 ASTMA335-95a 426 * 14.2 3
P91 GB5310-2008 426 * 14 3
P91 GB5310-2008 426 * 13 2
P91 GB5310-2008 426 * 13 5
P91 GB5310-2008 426 * 12 2
P91 ASTMA335-95a 426 * 12 5
P91 ASTMA335-95a 426 * 11 5
P91 GB5310-2008 426 * 11 3
P91 ASTMA335-95a 426 * 10 5
P91 ASTMA335-95a 406.4 * 80 3
P91 GB5310-2008 406.4 * 65 3
P91 ASTMA335-95a 406.4 * 50 3
P91 GB5310-2008 406.4 * 50 5
P91 GB5310-2008 406.4 * 45 2
P91 GB5310-2008 406.4 * 40 3
P91 GB5310-2008 406.4 * 32 1

Elongation Requirements

Calculated Minimum Elongation Values
Elongation in 2 in. or 50 mm, min %
Wall Thickness P5, P9, P11, P22 P91
in. mm Longitudinal Transverse Longitudinal
5/16 (0.312) 8 30 20 20
9/32 (0.281) 7.2 28 19 19
1/4 (0.250) 6.4 27 18 18
7/32 (0.219) 5.6 26 17
3/16 (0.188) 4.8 24 16
5/32 (0.156) 4 22 15
7/8 (0.125) 3.2 21 14
3/32 (0.094) 2.4 20 13
1/18 (0.062) 1.6 18   12


Mechanical Tests Specified

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot.  For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
Notes for Hardness Test: P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].
Notes for Bend Test: For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.
The inside diameter of the bend shall be 1 inch [25 mm].
Hydrostatic Test Each length of pipe shall be Hydro tested, at option of manufacture nondestructive electric testing can be used.

Packaging & Shipping

Utmost care is taken towards Packing of the ASTM A335 Grade P91 NACE Alloy Seamless Pipes so as to ensure that the resultant Coils, Foils, Tubes, Pipes and Fittings reach in the same condition as desired by our valued customers.
Packing specifications for various products are:

  • Larger Dia Fusion Welded Pipes are packed with aluminium end caps in a wooden crates.
  • S.S. Automotive Exhaust Pipes & Scheduled pipes both are packed with plastic end caps in wooden crates.
  • Cold Drawn Seamless Stainless Tubes are packed with plastic end caps in a wooden box with an inside thermocoal covering.
  • Coils and Foils are packed in wooden crates.

ASTM A335 Grade P91 NACE Alloy Seamless Pipes Packaging

Packed ASTM A335 Grade P91 NACE Alloy Seamless Pipes

ASTM A335 Grade P91 NACE Alloy Seamless Pipes Packaging

Packed ASTM A335 Grade P91 NACE Alloy Seamless Pipes


Other Packaging information:

  • Bundle Packing
  • Bundle Packing
  • Wooden Case
  • Wooden Case
  • Wooden Case for U Tubes
  • Reinforced by angle bar

 

Why us?

  • ASTM A335 Grade P91 NACE Alloy Seamless Pipes Manufacturer & Exporter since 1996
  • The annual capacity of the plant equals about 12.000 tons
  • Specialized in Pipes & Tubes, Stainless Steel Pipe & Carbon Steel Pipe
  • We export ASTM A335 Grade P91 NACE Alloy Seamless Pipes everywhere in the world
  • We have our own warehouse of 10,000 feet, so we can offer ASTM A335 Grade P91 NACE Alloy Seamless Pipes best price in the market

Heilights:

  • Pipes up to 24" made in continuous production from coil
  • Pipes up to 80" made from single plates
  • Maximum thickness 40 mm

Strength:

  • Contacts with major mills & stockists around the world.
  • Can offer ex-stock materials as well as mill delivery with nominal margins.
  • Complete in-house testing facilities viz. hydro, eddy current, UT, chemical analysis,
  • physical/mechanical, PMI, microscopic examination, etc…
  • Prime and genuine materials with co-relating original test certificates.

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Please note:
ASTM A312 / A312M – 13 Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

 

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