Stainless Steel 321/321h Welded Tube

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Stainless Steel 321/321h Welded Tube Manufacturer.

WELDED: DIN 1.4541 Tube | UNS S32100 Tube | JIS SUS 321 Tube | ASTM A249 TP321 Tube | ASTM A269 TP321h Tube | ASTM A270 TP321 Tube | ASTM A688 TP321h Tube | BS 321S31 Tube | EN X6CrNiTi18-10| DIN 1.4878 Tube

Stainless Steel 321/321h Welded Tube Manufacturer

SS S32100 Welded Tube, ASTM A249 TP321 SS Welded Tubes, Stainless Steel 321h Welded Tubes, Stainless Steel 1.4541 Welded Tube, ASME SA269 SS 321 Welded Tubing, 321h SS Welded Tube Manufacturer in India, SS 321 ERW Tubes Supplier in Qatar, Steel 321h Welded Tubes Exporter in Australia, ASTM A270 TP321 Stainless Steel ERW Tubes, Stainless Steel 321h Welded Tubing.

The Stainless Steel 321 Welded Tubes are austenitic stainless steel that are stabilized with the addition of titanium. The Stainless Steel 321H Welded Pipes are a high carbon version of 321 Alloy which is developed with high strength at elevated temperatures. MPJ is one of the best exporters, manufacturers and stockists of stainless steel. Our brand has become a common household name, especially due to the in-class quality products and solutions that we offer to our consumers. We highly value our consumers and their requirements, for which our services have been widely accepted across the globe. Some of our top exported counties include France, UK, Australia, Netherlands, Italy, Finland, Tanzania, Zambia, Ethiopia, Tunisia, Namibia, Kenya, Iran, Egypt, Iraq, Taiwan, Oman, Kuwait, Syria, Yemen, Philippines, Azerbaijan, Hong Kong, Israel.

The products that we develop are made in accordance with both national and international markets. This is achieved by years of experience and dedication, powered by efficient infrastructure and technologically. The chemical composition of the Stainless Steel 321/321H Welded Tubos incorporate manganese, carbon, nickel, titanium, nitrogen, chromium, phosphorus and sulfur. The presence of these chemicals, specifically titanium, gives the UNSS32100 (321) and UNSS32109 (321H) welded tubes properties like high durability, elongation, longevity, toughness, flexibility, great tensile strength, yield strength, electrical resistivity and good dimensional accuracy. These tubes also have other abilities like good resistance against corrosion, oxidation and pitting alongside high crevice corrosion and stress corrosion cracking.

The Stainless Steel 321H Welded Tubes are used in a wide range of industries such as petrochemicals, transportation units, marine engineering, oil and gas industry, among others. As a renowned brand, MPJ offers the best quality Stainless Steel 316 Welded Tubos that comes with an outer diameter of 6.00 mm to 101.40 mm, wall thickness ranging from 0.50 mm to 8.00 mm, and length going upto 30 metres. The specifications that we offer are ASTM, ASME, DIN EN (Germany), NF (AFNOR) and JIS (Japan). Moreover, our supplied tubes are NDT tested, have lower stress value and special chemistry. The grit polish polish measure ranges from 120 to 600 and the supply condition is bright annealed/solution annealed and passivated.

Stainless Steel UNS S32109 Welded Tubing Exporter in Dubai, SS 321h Welded Tube, Stainless Steel 321/321h ERW Tubing, Stainless Steel 321 Welded Tubes Stockiest, SS UNS S32100 Welded Tube, Stainless Steel 321h ERW Tubes, SS JIS SUS 321/321h Welded Tubing Supplier, Stainless Steel DIN 1.4878 Welded Tubes, SS DIN 1.4541 Welded Tubing.

Stainless Steel 321/321h Welded Tube Chemical Composition

Grade  Range Ni Cr P Fe C Mn N Si S Ti
321 Min. 9.0 17.0 0 65.045
Max. 12.0 19.0 0.045 0.08 2.0 0.10 1.0 0.030 5(C+N) -0.70
321H Min. 9.0 17.0 65.25 0.04
Max. 12.0 19.0 0.045   0.010 2.00 0.10 1.00 0.030 4(C+N) -0.70

SS 321/321h Welded Tubes Mechanical Properties

Grade Tensile Strength min (MPa) Yield Strength 0.2% Proof min (MPa) Hardness Elongation (% in 50mm) min
Brinell max (HB) Rockwell B max (HR B)
321/321h 515 205 217 95 40%

SS ASTM A249 TP321h Tubing Equivalent Grades

Grade UNS No Old British Euronorm Japanese JIS Swedish SS GOST
BS En No Name
321 S32100 321S31 X6CrNiTi18-10 1.4541 SUS 321 2337
321h S32109 321S51 X10CrNiTi18-10 1.4878 SUS 321h

321/321h Stainless Steel Welded Tubes Standard Specifications

Spec. No.




Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes.

ASTM A249 / A249M Covers nominal-wall-thickness welded tubes and heavily cold worked welded tubes made from the austenitic steels listed in standard.


Welded Austenitic and Ferritic/Austenitic Stainless Steel 304 Sanitary Tubing.

This specification covers grades of seamless, welded, and heavily cold worked welded austenitic and ferritic/austenitic stainless steel sanitary
tubing intended for use in the dairy and food industry and having special surface finishes.


Welded Austenitic Stainless Steel 304 Feedwater Heater Tubes

ASTM A688 Standard Specification for Seamless and Welded Austenitic Stainless Steel 304 Feedwater Heater Tubes covers standard requirements for welded austenitic stainless steel feedforward heater tubes including those bent.


Austenitic Stainless Steel 304 Welded Tubing for General Service.

13 grades of austenitic stainless steel tubing for general corrosion-resisting and high-temperature service. (Types 304, 304L, 316, 316L, 317, 321, 347, 348 and XM grades).

Let’s discuss about your ongoing project

Size Range
  • Outer Diameter: 6.00 mm OD to 101.40 mm OD
  • Wall Thickness: 0.50 mm to 8.00 mm
  • Length: Up to 30 meters
  • Specifications: ASTM, ASME, DIN EN (GERMAN), NF (AFNOR), JIS (JAPAN)
Supply Condition
  • Bright Annealed / Solution Annealed & Passivated
  • Ability to supply tubes with stringent NDT Testing, Special Chemistry, Lower Residual Stress values.
  • OD Polishing : Grit Polish from 120 to 600.
  • Closer Dimensional Tolerance & higher Corrosion Resistance etc.
  • We offer customized cut Length to save time of our customers.
321/321h SS Welded Tube Quality Control

To ensure a quality product, MPJ is holding certificate ISO 9001:2015, ISO 45001, OHSAS 14001, & CE-PED. We are also members of various renowned agencies and Chambers of Commerce including MASSMA, EEPC, FICCI, FIEO, Indian Merchants Chamber, etc. With state-of-the-art manufacturing processes, contemporary technologies, and proficient services, we consider: offering the finest quality, best in class products. Compliance with specifications as per standards, Outer Diameter, Thickness, Inside Diameter, Inside Finish, Marking, Ends, and Finishing. This ensures that we never face a rejection of the Stainless Steel 321h Welded Tube supplied.

Brand –

SS 321 Welded Tubing are marked in requirement of the international standards.

This marking helps for the identification of the tube and supported with the Material Test Report. It is 100% traceable to our mill.

Stainless Steel 321 ERW Tubes Packing & Documentation

Stainless Steel 321/321h ERW Tubes Packing & Documentation

ASTM A269 TP321h Welded Tubes are surface wash and clean to remove all impurities and stock in the warehouse. Then it is wrapped in thin plastic and also it ends are protected by plastic caps to avoid any damage in transit. Stainless Steel 321 Welded Tube is bundled in bubble wrap followed by assorting them in colored plastic bundles. An outer rope is tied to protect the tubing and they are packed in wooden box or container.

MPJ Provide Stainless Steel 321 Welded Tube and SS 321hL Welded Tubes with all necessary documents such as commercial invoice, packing list, Test Reports, HS Code, Country of Origin attested by the chamber of commerce, Fumigation Certificate, Warranty Letter, and Base Material Certificates. Every lot is supplied with a material test certificate as per EN 10204 NACE 3.1 standards indicating the chemical and mechanical properties of the Instrumentation Tubes.

We also confirm the guarantee of the Welded tubes supplied as per Purchase order specifications and attest the same in the Material Test Certificate. We also welcome any third party inspection from an agency nominated by the customer to comply with NACE 3.2 Certification if required by the customer at an extra cost.

SS 321/321h Welded Tube Application Industries

  • Oil & Gas Exploration
  • Petrochemicals and Refineries
  • Cross Country Pipe Line for Gas & Water
  • Pipes for Engineering purpose
  • Thermal, Nuclear and Solar Power Plants
  • Desalination Plants
  • Chemical Industries
  • Aerospace
  • Atomic Energy
  • Pharmaceutical
  • Food and Dairy
  • Automobile
Chemical Industries
Chemical Industries
Cross Country Pipe Line for Gas and Water
Cross Country Pipe Line
Oil and Gas Exploration
Oil and Gas Exploration
Petrochemicals and Refineries
Petrochemicals and Refineries
Thermal, Nuclear and Solar Power Plants
Thermal, Nuclear and Solar Power Plants

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