Designation Of Stainless Steels

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Karma Piping offer quality Stainless Steel Pipes & Tubes

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Karma Piping is one of the major Indian manufacturers, exporter & suppliers of Stainless Steel Pipes & Tubes & 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.

DESIGNATION OF STAINLESS STEELS

Material: Stainless Steel Pipes & Tubes

Structure Hardenable Group AISI Type Analyses Built Up From Basic Types
Austenitic Hardenable by Cold Work Chromium-Nickel Manganese 201 Cr and Ni lower for more work hardening
202 Basic Type ó Cr 18% ó Ni 5% ó Mn 8%
204 C lower to avoid carbide precipitation
204L C lower for welding application
Austenitic Hardenable by Cold Work Chromium-Nickel 301 Cr and Ni lower for more work hardening
302 Basic Type ó Cr 18% ó Ni 8%
302B Si higher for more scaling resistance
303 S or Se added for easier machining
304 C lower to avoid carbide precipitation
304L C lower for welding application
305 Ni higher for less work hardening
308 Cr and Ni higher with C low for more corrosion and scaling resistance
309 Cr and Ni still higher for more corrosion and scaling resistance
309C Cb, Ta added to avoid carbide precipitation
309S C lower to avoid carbide precipitation
310 Cr and Ni highest to increase scaling resistance
314 Si higher to increase scaling resistance
316 Mo added for more corrosion resistance
316L C lower for welding application
317 Mo higher for more corrosion resistance and strength at heat
318 Cb, Ta added to avoid carbide precipitation
321 Ti added to avoid carbide precipitation
347 Cb, Ta added to avoid carbide precipitation
347F or Se S or Se added to improve machinability
348 Similar to 347, but low tantalum content (.10)
Martensitic Hardenable by Heat Treatment Chromium-Iron 403 Cr 12% adjusted for special physicals
410 Basic Type – Cr 12%
414 Ni added to increase corrosion resistance and physicals
416 S or Se added for easier machining
418 Spec W added to improve high temperature properties
420 C higher for cutting purposes
420F or Se S or Se added for easier machining
431 Cr higher and Ni added for better resistance and properties
440A C higher for cutting applications
440B C higher for cutting applications
440C C still higher for wear resistance
440F or Se S or Se added for easier machining
Ferritic Non-hardenable Chromium-Iron 405 Al added to Cr l2% prevent hardening
430 Basic Type ó Cr 17%
430F or So S or Se added for easier machining
430Ti Titanium stabilized
442 Cr higher to increase scaling resistance
446 Cr much higher for improved scaling resistance

Alloy Abreviations
Carbon . . . . . . . . . . C Molybdenum . . . . . . Mo Sulfur . . . . . . . . . . . S
Nickel . . . . . . . . . . Ni Chromium . . . . . . . . . Cr Titanium . . . . . . . . . Ti
Columbium . . . . . . Cb Phosphorous . . . . . . . . P Tantalum . . . . . . . . Ta
Manganese . . . . . . Mn Selenium . . . . . . . . . . Se Tungsten . . . . . . . . W
Silicon . . . . . . . . . . Si

The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes.

 

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Packaging & Shipping

Utmost care is taken towards Packing of the finished products 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.

Stainless Steel Pipes & Tubes Packaging

Packed Stainless Steel Pipes & Tubes

Stainless Steel Pipes & Tubes Packaging

Packed Stainless Steel Pipes & Tubes


Other Packaging information:

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

 

Why us?

  • Stainless Steel Seamless Pipes & Tubes Manufacturer 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 seamless tubes / welded tubes everywhere in the world
  • We have our own warehouse of 10,000 feet, so we can offer best price in the market
  • Supplier and trader of IBR Materials like IBR approved Pipes, IBR Certified Tubes

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.

Available Stock at Karma Piping

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