Seamless Alloys Steel Pipes

Alloy Steel Seamless Pipes (IBR) offered by us is made of alloy steel and feature exceptional performance properties. These are developed for energy-related applications involving oil & gas drilling and therefore are subjected to stresses in machine parts. Further, Alloy Steel Tubes are also used in domestic, professional or industrial areas.

 Alloy Steel Seamless Pipes (ASME SA335 Grade P5)

 Alloy Steel Pipes (ASTM A335 P11)

 Alloy Steel Pipes (ASTM A335 P12)

Alloy Seamless Pipes (ASTM A335 Grade P91 NACE

 Alloy Steel Tubes (ASME SA213 Grade T11)

Alloy Steel Tubes (ASME SA213 Grade T11) manufactured and supplied by us are of ASME SA213 Grade. Our expertise lies in offering these in various sizes as well as other specifications as per the required demands. These Alloy Steel Tubes find usage mainly in different industrial applications.

 ASME Alloy Steel Seamless Tubes / Pipes (SA335 Grade P9)

ASME Alloy Steel Seamless Tubes / Pipes (SA335 Grade P9) manufactured, supplied and exported by us are used for various industrial applications. Our specialization in offering precision engineered alloy steels allow us to deliver these for various engineering applications in various grades like A-387 GR. P1, P5, P9, P11, P12, P22, P91, ASTM A-335 and others. The other specifications include:

ASTM A335 PIPES | ASTM A335 GR P5 PIPES | ASTM A335 GR P9 PIPES | ASTM A335 GR P11 PIPES | ASTM A335 GR P22 PIPES | ASTM A335 GR P91 PIPES 
Size Range: 1/8" - 26"
Schedules: 20, 30, 40, Standard (STD), Extra Heavy (XH), 80, 100, 120, 140, 160, XXH

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]

 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

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

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)

 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

Permissible Variations in Outside Diameter Outside Diameter at any point shall not vary from standard specified more than:

NPS [DN] Designator Over   Under     in. mm in. mm 1/8 to 1 1/2 [6 to 40], incl. 1/64 (0.015) 0.40 1/64 (0.015) 0.40 Over 1 1/2 to 4 [40 to 100], incl. 1/32 (0.031) 0.79 1/32 (0.031) 0.79 Over 4 to 8 [100 to 200], incl. 1/16 (0.062) 1.59 1/32 (0.031) 0.79 Over 8 to 12 [200 to 300], incl. 3/32 (0.093) 2.38 1/32 (0.031) 0.79 Over 12 [300] +/- 1% of the specified outside diameter

 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.