Manufacturer, Supplier, Exporter & Stockiest of ASTM A312 TP 321/321H Stainless Steel pipes.
ASTM A312 TP 321 / 321H STAINLESS STEEL SEAMLESS PIPES | ASTM A312 TP 321 / 321H STAINLESS STEEL SEAMLESS TUBES
ASTM A312 TP 321 Stainless Steel Seamless Pipes | ASTM A312 TP 321H Stainless Steel Seamless Pipes | ASTM A312 TP 321 Stainless Steel Seamless Tubes| ASTM A312 TP 321H Stainless Steel Seamless Tubes| ASTM A312 TP 321 / 321H SS Pipes and Tubes
Jaiti Steel is a reputable manufacturer, exporter, and stockiest of a wide range of steel pipes and tubes. With a strong commitment to quality and customer satisfaction, we have established ourselves as a trusted name in the steel industry. Our company is dedicated to providing reliable and durable steel solutions to meet the diverse needs of our clients.
We prioritize quality at every stage of our manufacturing process. Jaiti Steel adheres to stringent quality control measures to ensure that all our products meet international standards and specifications. Our team of skilled professionals monitors each production phase, from sourcing raw materials to the final inspection, to guarantee the highest level of quality.
ASTM A312 TP 321 / 321H Stainless Stee; Seamless Pipe and Tubes is a standard austenitic 18/8 chromium nickel alloy with the addition of Titanium making it an excellent choice in elevated temperature environments.
The titanium stabilises the material removing its susceptibility to the effects of intergranular corrosion. 321 is therefore the stainless steel material of choice for applications in working environments up to 9000 C.
A drawback of Type 321 is that the titanium does not transfer well across a high temperature arc, so it is not recommended as a welding consumable.
In such instances, 347 is the preferred choice as the Niobium performs the same function as Titanium but can be still transferred across a high temperature arc. Type 347 is therefore the consumable of choice for welding Grade 321.
The steel has excellent forming and welding qualities and excellent toughness even at cryogenic temperatures. If you are looking for a stainless steel to provide resistance to intergranular corrosion, 304L is the normal choice as it is a more commonly used and supplied steel.However, 321 is a much better option in operating temperature environments in excess of 5000 C and therefore have its own merits.
Note that Type 321 does not polish well so it is not practical to use this material as cosmetic architectural feature.
Background of ASTM A312 TP 321/321H Stainless Steel Pipes
Outside Diameter:6.00 mm OD up to 250 mm OD, Sizes up to 12” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Thickness Range:0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Type: Seamless / ERW / Welded / Fabricated / CDW
Form: Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
Length: Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded
End Protection: Plastic Caps | Outside Finish: 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
Delivery Condition: Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
Packing: Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials: Sizes and Specifications other than above can be manufactured on request
Mechanical properties:
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 321 | 515 | 205 | 40 | 95 | 217 |
| 321H | 515 | 205 | 40 | 95 | 217 |
| 347 | 515 | 205 | 40 | 92 | 201 |
Chemical Composition(%, max)
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
| 321 | min. max | – 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | – | 9.0 12.0 | 0.10 | Ti=5(C+N) 0.70 |
| 321H | min. max | 0.04 0.10 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | – | 9.0 12.0 | – | Ti=4(C+N) 0.70 |
| 347 | min. max | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | – | 9.0 13.0 | – | Nb=10(C+N) 1.0 |
ASTM A312 TP 321 / 321H Stainless Steel Pipes, Tube Stock and Supply Range
| Sr. No. | Product Description | Outside Diamter, OD (in mm) | Wall Thickness, WT (in mm) |
| 1 | 321/321H Stainless Steel Round Pipe/Tube | 6mm – 630mm | 0.5mm-30mm |
| 2 | 321/321H Stainless Steel Square Pipe/Tube | 12.7mm* 12.7mm to 300mm* 300mm | 0.5mm-30mm |
| 3 | 321/321H Stainless Steel Rectangular Pipe/Tube | 10*20mm to 100*200mm | 0.5mm-30mm |
| 4 | 321/321H Stainless Steel Colour Coated Pipe/Tube | 6mm to 630mm | 0.5mm-30mm |
| 5 | 321/321H Stainless Steel Ornamental Tubes | 12.7mm to 76.2mm | 0.5mm-2.0mm |
| 6 | 321/321H Stainless Steel Electropolished Pipes/Tubes | 12.7mm to 250mm | 0.5mm-30mm |
| 7 | 321/321H Stainless Steel Slot Round Pipe/Tube | 12.7mm to 76.2mm | 0.5mm-2.0mm |
| 8 | 321/321H Stainless Steel Triangle Tube | 16mm to 85mm | 0.5mm-3.0mm |
| 9 | 321/321H Stainless Steel Hexagonal Tube | 13mm to 85mm | 0.5mm-2.0mm |
| 10 | 321/321H Stainless Steel Handrail Tube | – | 0.5mm-2.0mm |
| 11 | 321/321H Stainless Steel U Shaped Tube | 20mm to 200mm | 0.5mm-2.0mm |
| 12 | 321/321H Thin-Wall Stainless Steel Tube | 22mm*0.7mm to 108mm*2.0mm | 0.5mm-2.0mm |
| 13 | 321/321H Inner/Outside Polished Stainless Steel Tube, Pipes | 12.5mm to 203.2mm | 1.0mm – 5mm |
| 14 | 321/321H Stainless Steel Capillary Tube | 0.28mm to 10mm | 0.08mm – 1.2mm |
| 15 | 321/321H Stainless Steel Seamless Tube | 6mm to 430mm | 0.8mm – 30mm |
Application Industry
| Pharmaceutical Equipment | Off-Shore Oil Drilling Companies |
| Chemical Equipment | Power Generation |
| Sea Water Equipment | Petrochemical |
| Heat Exchangers | Gas Processing |
| Condensers | Specialty Chemicals |
| Pulp and Paper Industry | Pharmaceuticals |
We Export Our Pipes & Tubes Worldwide
We export ASTM A312 TP 321/321H Stainless Steel Seamless Pipe and Tube to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherland, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East etc.