ASTM A312 TP321 Stainless Steel Welded Pipes




  ISPAT ALLOYS & TUBE INDUSTRIES is one of the most trusted pipes & tubes supplier worldwide having a brand image that has been recommended by the big names in the business. Round Stainless Steel Pipe is ideal for all applications where greater strength and superior corrosion resistance is required. These Round Stainless Steel Pipes are fabricated from qualitative raw material as per global demand and ensures accurate precision. Our round SS pipes are highly demanded in various industries for their excellent performance, customized design. Ispat Alloys & Tube Industries have realized the importance of being competitive, our company has always invested generously in new technology and up gradation of its infrastructure. The company has soon established a name for itself as a reliable manufacturer and exporter of quality stainless steel pipes and tubes.  
  We are a Strong Contender of Stainless Steel Pipes and Tubes products in Global market. Ispat Alloys & Tube Industries provides wide range of technical specifications in Round SS tubes, our comprehensive range is highly acknowledged in Indian as well as overseas market like Latin America, Europe and Gulf Countries. Stainless Steel Pipes, Stainless Steel Seamless, Tubes & ‘U’ Tubes are manufactured and tested to international Standards, under strict supervision of highly qualified and experienced technocrats, to satisfy and meet the most critical demands of reputed industrial users for various applications, sizes, grades and specifications as per ASTM and also conforming other international Grade/Standards Equivalent to ASME, DIN, EN, NFA, and JIS etc. Ispat Alloys & Tube Industries has specialization in tubing for Heat exchangers, LP/HP Heaters, Condensers, Heating Elements and duly annealed, pickled, tubes with 30-meters length tubes. Ispat Alloys & Tube Industries endeavors to provide better services to customers through quick delivery, technical improvement, value engineering, and prompt feedback for quality improvement.  



Sr. No. Material Size Schedule Specification
1 Seamless Pipe 15 NB To 300 NB Sch. 5s Sch. 10s Sch. 40s Sch. 80s Sch. 160s Sch. XXS ASTM A 312
2 Welded (ERW) Pipe 15 NB To 300 NB Sch. 5s Sch. 10 Sch. 40s & Sch. 80s ASTM A 312
3 Welded (ERW) Pipe; 150 NB To 600 NB Sch. 5s Sch. 10s Sch. 40s & Sch. 80s ASTM A 358



Chemical Composition


Ni 9 - 12
Fe Balance
Cr 17 - 19
C 0.08 max
Si 1 max
Mn 2 max
P 0.040 max
S 0.03 max
0.10 max





Stainless Steel [SS] 321
AISI 321
UNS S32100
Werkstoff Nr. 1,4541



Mechanical & Physical Properties


Density 8.0 g/cm3
Melting Point 1400 °C (2550 °F)
Tensile Strength Psi – 75000 , MPa – 515
Yield Strength (0.2%Offset) Psi – 30000 , MPa – 205
Elongation 35 %



Uses & Applications


ASTM A312 TP321 Stainless Steel Welded Pipes



  • Chemical
  • Petrochemical
  • Refineries
  • Fertilizers
  • Power Plant
  • Nuclear Power
  • Oil & Gas
  • Paper
  • Breweries
  • Cement
  • Sugar
  • Oil Mills
  • Mining
  • Construction
  • Shipbuilding
  • Steel Plant
  • Offshore
  • Defence
  • Ports
  • Railway
  • Engineering Co. & Government Org. etc




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Contact Info

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