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Bulk stock available of TP321 H stainless steel pipe, Famous SS 321h EFW pipe dealer, 321 stainless
steel pipe manufacturer
Table of Content
Table of Content
Preston Pipes & Alloys is a trusted stainless steel 321 and 321H pipes supplier. These are titanium-stabilized austenitic stainless steels. SS 321 pipes are suited for high-temperature environments where oxidation and corrosion resistance are critical. The main difference between the two is the carbon content—321H having a higher level, resulting in greater strength at high temperatures. Both grades include chromium, nickel, carbon, silicon, manganese, phosphorus, sulfur, nitrogen, and titanium. Because of its composition, stainless steel 321H pipes are suited for use in aerospace, chemical processing, heat exchangers, and refineries.
We offer SS UNS S32109 Pipes in a wide range of sizes, types, and finishes to meet diverse industry demands. The pipes meet ASTM A213, A249, A269 and ASME SA213, SA249, SA269 standards. Available in outer diameters from 6.00 mm to 914.4 mm and sizes up to 24" NB, with thicknesses ranging from 0.3 mm to 50 mm. We offer seamless, ERW, welded, fabricated, or CDW types. Forms include round, square, rectangular, coiled, "U" shaped, pancake coils, and hydraulic tubes. We provide pipes in single, double, or custom lengths with plain, beveled, or threaded ends. Our SS 321 pipe for regular use and stainless steel 321H pipe for high-stress system ensure reliability.
SS 321 / 321H pipes have strong mechanical strength with a minimum tensile strength of 75 ksi and a yield strength of 30 ksi. Brinell hardness does not exceed 217, which ensures toughness. The density is 0.286 lbm/in³ and thermal conductivity at 68°F is 9.3 BTU/hr-ft-°F, making them efficient for heat transmission functions. These characteristics make ASTM A213 SS TP321 Pipes excellent for pressure-heavy or high-temperature systems.
All Stainless Steel 321/321H Pipes go through strict quality checks. We test for flattening, flaring, hardness, pitting, and intergranular corrosion. We check surface finish, end finish, and dimensions before packing. Pipes are shipped in secure bundles, wooden boxes, or as requested. As a 321 stainless steel pipe stockist, we ensure every piece meets your exact standards. Reach out today to know current price of stainless steel 321 / 321H pipes.
| ASTM / ASME Specification | ASTM A312 / ASTM SA 312 |
| Dimensional Standards | ANSI/ASME B36.19M, ANSI/ASME B36.10M |
| Different Types and Shapes | Hydraulic, Square, Hex, Honed, Round, Rectangle |
| Most Common types | 100% X Ray Welded, Seamless, CDW, Fabricated, ERW, Welded |
| Pipe End Types | Plain One End, Plain Both Ends, Bevel small end, Treaded On End, Beveled end, Bevel one end, Bevel large end, Beveled One End, Treaded Both Ends, Bevel both ends |
| Technical Conditions of The Pipe | Cold Drawn, Bright Annealed, Annealed and Pickled, Polished |
| Mechanical Surface Finishing | 2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements |
| Wall Wall Thickness Schedule Chart | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Other Services we provide |
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| Marking available for TP321 Pipes |
Marked Pipe Sample: ANSI B36.19 ASTM A312 TP321 12" NB SCH 40S SEAMLESS HEAT NO. XXXX |
Stainless Steel 321 Seamless Pipe
Stainless Steel 321 Welded Pipe
Stainless Steel 321 ERW Pipe
A312 TP321 EFW Pipe
Contact Us for Bulk ordering ASTM A312 TP321 Seamless Pipes!
| Density | 8.0 g/cm3 |
| Melting Point | 1454 °C (2650 °F) |
| Tensile Strength | Psi - 75000 , MPa - 515 |
| Yield Strength (0.2%Offset) | Psi - 30000 , MPa - 205 |
| Elongation | 35 % |
Stainless Steel 321/321H Pipes Composition Chart
| Ni | 9 - 12 |
| Cr | 17 - 19 |
| C | 0.08 max |
| N | 0.10 max |
| Fe | Balance |
| Mn | 2 max |
| Si | 0.75 max |
| S | 0.03 max |
| P | 0.045 max |
| Ti | 5xC min 0.60% max |
