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Uncover the pinnacle of dependability and performance with Stainless Steel 321 Pipes, featured Noted on our product pages. Browse a wide-ranging assortment of expertly crafted solutions carefully designed to meet a vast array of industrial needs. custom-built with the highest precision, our SS 321 Pipes conform carefully to industry standards, delivering unmatched durability and protection against corrosion. As a dependable supplier, we place customer satisfaction first by providing tailored solutions, competitive rates, and timely delivery. Whether powering construction projects, strengthening infrastructure, or advancing industrial ventures, our stainless steel pipes surpass expectations, setting fresh standards for excellence. Embrace exceptional quality and innovation through our steadfast commitment, ensuring dependable reliability at every step.
| Standard | ASTM A312, A358 / ASME SA312, SA358 |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated Pipes |
| Form | Round, Square, Rectangular, Oval, Hydraulic Etc |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Treaded |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements |
| Grade | Ni | C | Mn | P | S | Si | Cr | Mo | N | TI | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 321 | Max | 12.00 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 19.0 | 3 – 4 | 0.10 max | 0.70 |
| Min | 9.00 | – | – | – | – | – | 17.0 | – | – | 5(C+N) | |
| 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 % |
At Koasteel, we take pride in being the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for every one of your piping requirements. With modern production facilities strategically positioned across New Zealand, we maintain an extensive inventory of more than 25,000 tons of top-quality materials kept ready in stock.
Reach out to us for a fast quote tailored to your needs.
We provide these Stainless Steel 321 Pipe conforming to DIN, ISO, JIS or ANSI Standard.
Anti-corrosion properties: The stainless steel 321 pipe contains titanium, which stabilizes the product against chromium carbide precipitation. This stabilizing element enables it to resist intergranular corrosion, making it well-suited for environments where contact with corrosive materials is a concern, including chemical processing, petrochemical and marine applications.
High thermal resistance: The inclusion of titanium also enhances the high thermal properties of stainless steel 321. It can endure temperatures as high as 900°C (1652°F) without sacrificing its mechanical property characteristics, making it well-suited for uses in hot settings such as air filters, furnace components and heat exchangers.
Strength and durability: Stainless steel 321 retains outstanding mechanical properties even under high temperatures. It delivers excellent strength, rigidity and stability, making it appropriate for demanding uses where reliability and performance matter.
Easy to manufacture: Stainless steel 321 can be readily shaped and welded with standard techniques. Its weldability makes it attractive for a wide range of applications, producing structures with complex shapes.
Sanitary properties: Stainless steel is inherently resistant to bacterial growth in settings where hygiene and sanitation matter, such as in food processing, pharmaceutical and pharmaceutical industries
Luxury: Stainless steel 321 has a sleek and polished appearance. This makes it well-suited for applications where aesthetics matter, such as buildings, interior design elements and decorative applications.
Low maintenance: Stainless steel demands less maintenance and upkeep than other materials. It is highly resistant to rust, staining and corrosion, lowering the need for frequent servicing or replacement and thereby saving costs over the long term.
Stainless Steel 321 Pipes serve applications as varied as the industries that use them, propelled mainly by the aerospace, railway, construction and automotive industries along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
Chemical applications:The stainless steel 321 pipe withstands high temperatures and corrosive chemicals, which makes it well suited for chemical plants where acids, alkalis and other corrosive agents are handled
Aerospace Applications:Stainless steel 321 pipe serves in aircraft and aerospace uses, including air filters and fuel lines, thanks to its high strength at elevated temperatures and its layers that deliver outstanding resistance to oxidation and corrosion
Oil and Gas Industry:These pipelines carry hot water and gas under high-pressure conditions within oil and gas production facilities
Power generation:Stainless steel 321 pipe is applied in uses such as water heaters and air filters in power plants owing to its resistance to high temperatures and pressures
Food and Beverage Industry:Stainless steel 321 pipe is favored by the food industry for its corrosion resistance and cleanliness, which keeps products clean.
HEATING PROPERTIES: Stainless steel 321 pipe works well for heat exchangers because of its excellent thermal conductivity and its resistance to oxidation and corrosion at elevated temperatures
Automotive Industry: This pipe appears in air filters and catalytic converters in automobiles because of its high temperature and corrosion resistance
Construction: Stainless steel 321 pipe is used in construction for structural supports, handrails and structural components that call for corrosion and wear resistance
Petrochemical Industry: These pipelines serve in petrochemical plants to move harmful chemicals and gases to sensitive areas.
Material: Stainless steel 321 is a high-strength austenitic stainless steel containing surplus titanium, which delivers outstanding resistance to intergranular corrosion. Confirm that the pipe you select is genuinely manufactured from stainless steel.
Size and Dimensions: Establish the pipe size and dimensions you need according to what your application demands. Take into account factors such as inside diameter, outside diameter, wall thickness and length.
Pressure and Temperature Checks: Confirm that the pipe can handle the pressure and temperature conditions of your application. Stainless steel 321 pipes are recognized for withstanding high temperatures, but reviewing their specifications is essential.
Corrosion resistance: Stainless steel 321 offers outstanding corrosion resistance, particularly in high-temperature settings. Make certain the pipe satisfies your application’s corrosion resistance needs, especially if it will come into contact with corrosive substances.
Certifications and Standards: Confirm that the stainless steel 321 pipe complies with industry standards and certifications like ASTM, ASME, or EN standards. Such certifications guarantee the pipe delivers high quality and performance.
Manufacturing Quality: Examine the pipe’s quality, including aspects like weld quality, surface finish, and dimensional accuracy. Superior manufacturing guarantees the pipe’s reliability and durability.
Application compatibility: Take into account the particular needs of your application, such as whether the pipe will serve for water, gas, or construction. Select the pipe that fits your application environment and conditions.
Manufacturer Name: Select a trustworthy supplier or manufacturer recognized for quality stainless steel pipe. Review customer feedback, testimonials, and brands to confirm credibility and customer satisfaction.
| ASTM A312 SS 304 Pipe OD mm | Pipe WT mm | in. | Sch | Kg/m |
| 13.72 | 1.65 | 1/4 | 10S | 0.50 |
| 13.72 | 2.24 | 1/4 | 40S | 0.64 |
| 13.72 | 3.02 | 1/4 | 80S | 0.81 |
| 17.15 | 1.65 | 3/8 | 10S | 0.64 |
| 17.15 | 2.31 | 3/8 | 40S | 0.86 |
| 17.15 | 3.20 | 3/8 | 80S | 1.12 |
| 21.34 | 2.11 | 1/2 | 10S | 1.02 |
| 21.34 | 2.77 | 1/2 | 40S | 1.29 |
| 21.34 | 3.73 | 1/2 | 80S | 1.65 |
| 26.67 | 2.11 | 3/4 | 10S | 1.30 |
| 26.67 | 2.87 | 3/4 | 40S | 1.71 |
| 26.67 | 3.91 | 3/4 | 80S | 2.23 |
| 33.40 | 2.77 | 1 | 10S | 2.13 |
| 33.40 | 3.38 | 1 | 40S | 2.54 |
| 33.40 | 4.55 | 1 | 80S | 3.29 |
| 33.40 | 6.352) | 1 | 160 | 4.30 |
| 42.16 | 2.77 | 1¼ | 10S | 2.73 |
| 42.16 | 3.56 | 1¼ | 40S | 3.44 |
| 42.16 | 4.85 | 1¼ | 80S | 4.53 |
| 42.16 | 6.352) | 1¼ | 160 | 5.69 |
| 48.26 | 2.77 | 1½ | 10S | 3.16 |
| 48.26 | 3.68 | 1½ | 40S | 4.11 |
| 48.26 | 5.08 | 1½ | 80S | 5.49 |
| 60.33 | 2.77 | 2 | 10S | 3.99 |
| 60.33 | 3.91 | 2 | 40S | 5.52 |
| 60.33 | 5.54 | 2 | 80S | 7.60 |
| 60.33 | 8.742) | 2 | 160 | 11.29 |
| 73.03 | 3.05 | 2½ | 10S | 5.35 |
| 73.03 | 5.16 | 2½ | 40S | 8.77 |
| 73.03 | 7.01 | 2½ | 80S | 11.59 |
| 88.90 | 3.05 | 3 | 10S | 6.56 |
| 88.90 | 5.49 | 3 | 40S | 11.47 |
| 88.90 | 7.62 | 3 | 80S | 15.51 |
| 88.90 | 11.132) | 3 | 160 | 21.67 |
| 101.60 | 3.05 | 3½ | 10S | 7.53 |
| 101.60 | 5.74 | 3½ | 40S | 13.78 |
| 101.60 | 8.08 | 3½ | 80S | 18.92 |
| 114.30 | 3.05 | 4 | 10S | 8.50 |
| 114.30 | 6.02 | 4 | 40S | 16.32 |
| 114.30 | 8.56 | 4 | 80S | 22.67 |
| 114.30 | 13.492) | 4 | 160 | 34.05 |
| 141.30 | 6.55 | 5 | 40S | 22.10 |
| 141.30 | 9.53 | 5 | 80S | 31.44 |
| 141.30 | 15.882) | 5 | 160 | 49.87 |
| 168.28 | 3.4 | 6 | 10S | 14.04 |
| 168.28 | 7.11 | 6 | 40S | 28.69 |
| 168.28 | 10.97 | 6 | 80S | 43.21 |
| 168.28 | 14.27 | 6 | 120 | 54.75 |
| 168.28 | 18.262) | 6 | 160 | 68.59 |
| 219.08 | 8.18 | 8 | 40S | 43.20 |
| 219.08 | 12.7 | 8 | 80S | 65.63 |
| 219.08 | 18.23 | 8 | 120 | 91.30 |
| 219.08 | 23.012) | 8 | 160 | 112.97 |
Mail: sales@koasteel.nz
