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Stainless Steel 321/321H Pipes



ASTM A312 TP 321/321H Stainless Steel Pipes Stockist in Mumbai India.

ASTM A312 TP 321/321H Seamless, Welded, ERW Pipes

ASTM A358 TP 321/321H EFW Pipes Stockist and Supplier in Mumbai India.


Preston Pipes and Alloys have been successfully aiming to provide SS grade pipes to various industries due to its versatile features obedient for industrial applications. This task we accomplish by eradicating the intermediate suppliers. Now we are directly supplying products to our domestic and global suppliers this also cuts the cost. Even the delivery is done on time due to our fast logistic services. One can choose products from our inventory that consists pipes in a variety of dimensions, specifications, and standards or choose Stainless Steel 321 / 321H Pipes without any consultation because of its everlasting performance.


As this grade is made of pure stainless steel it possesses great affinity to stand against corrosion due to its chromium content. This grade is slightly ferritic and austenitic. It comes in both tempered and quenched state. The pipes we offer has good machining capability and tolerance limit so as to fit in different types of applications. These have good pitting and crevice cracking resistance even at high temperatures. The moderate quenching with water makes them tough enough to stand in reducing environment.


Spinning the finest raw grade we are able to provide only durable products to our customers. The surface finish process makes the design of pipes sturdier and uniform. Additionally, these are coated with the extra protection of bright black polish that prevents from oxidation too.


Quality measures:
Quality is a great aspect to become a reputable dealer as we believe. Therefore each step of production is surrounded by the quality inspection team. They conduct the following tests- hardness test, tensile test, positive material test, micro and macro test, chemical test/ spectro analysis and intergranular corrosion test. These tests check the reliability of the product. We especially take care that none of SS 321 / 321H Seamless Pipes get damaged while transit so we use wooden boxes, crates, cases, and pallets.

Equivalent Grades
STANDARD WERKSTOFF NR. UNS JIS EN
SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9
Stainless Steel 321/321H Pipes

Standard Specification
Specifications :
Standard :
Seamless Size :
ERW Size :
EFW Size :
Outside Diameter :
Length :
Thickness :
Schedule :
Type :
Form :
End :
ASTM A/ASME SA213, A249, A269, A312, A358
ASTM, ASME and API
1/2″ NB – 16″ NB
1/2″ NB – 24″ NB
6″ NB – 100″ NB
6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available
Single Random, Double Random & Required Length
0.3mm – 50 mm
SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH120, SCH140, SCH160, XXS
Seamless, Welded, ERW, EFW
Round Pipes, Square Pipes, Rectangular Pipe
Plain End, Beveled End, Treaded

Chemical Composition
Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 - 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

Mechanical Properties
Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Types Of Grade 321/321H Stainless Steel Pipes
Stainless Steel Grade 321/321H Pipe

Stainless Steel 321/321H Pipe

SS 321/321H Pipes

Stainless Steel 321 Seamless Pipes

AISI 321H Stainless Steel Pipe

ASTM A312 SS 321 Seamless Pipe

ASME SA 312 SS 321H Welded Pipes

Stainless Steel TP321 Welded Pipe Supplier

Stainless Steel 321H Rectangle Pipes Exporter

TP321H Stainless Steel Square Pipes

ASTM A358 Stainless Steel 321 EFW Pipe

INOX 321/321H Pipes

SS 321/321H Pipe Equivalent Grades

Stainless Steel 1.4541 Pipe

SS 1.4878 Seamless Pipe

Stainless Steel 1.4541 / 1.4878 Welded Pipes

Stainless Steel 1.4878 / 1.4541 EFW Pipes

SS S32100 Pipes

Stainless Steel UNS S32100 Seamless Pipe

Stainless Steel S32109 ERW Pipes

Stainless Steel S32100/S32109 EFW Pipes

SS SUS 321 Seamless Pipes

SS SUS 321H Welded Pipe

Stainless Steel SUS 321/321H EFW Pipe


Application Industry

Steel 321/321H Pipes are known to deliver exceptional performance and are generally developed for meeting the demands. We offer a broad range of 321/321H Seamless Pipes, Welded Pipes through a worldwide network of stock-keeping branches. These are use in various industries like :


Application Industry
  • Chemical Industry
  • Oil & Gas Industry
  • Petrochemical Industry
  • Power Genration Industry
  • Sugar Industry
  • Food Processing Industry
  • Paper & Pulp Industry
  • Offshore and Onshore Services

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Quick Contact

1601, 16th Floor, Ankush Apartment, 10th Khetwadi Lane, Khetwadi, Girgaon, Mumbai - 400004, Maharashtra, India