Pratik Pipe & Fittings is a trustworthy producer and stockholder of high-performance stainless steel 321H pipes. As a best 321H stainless steel pipe seller, we proudly sell and deliver pipes all over the world with assured quick delivery for any 321H stainless steel seamless and welded pipe size. With a complete range of SS 321H pipe, we're one of India's most dependable 321H stainless steel pipe sellers, supplying pipes to industries that demand durability and accuracy.
Stainless Steel 321H is an austenitic stainless steel with titanium added for carbide precipitation for high-temperature applications. Stainless Steel 321H holds a high oxidation and corrosion resistance level, most prominently in high-temperature environments common in them. With a carbide precipitation temperature range of 427 and 816°C (800 and 1500°F), SS 321H is non-magnetic in its annealed form and can only become strengthened through cold working. With a dual certification in 321 and 321H through its level of carbon, SS 321H is a first preference in petrochemicals, in power, and in heat exchangers.
We make SS 321H pipes in compliance with international standards, including ASTM A/ASME SA213, A249, A269, A312, and A358 (I-V classes). The material grade for these pipes is UNS S32109, offering high mechanical and chemical properties. Stainless pipes and stainless tubing in a variety of dimensions, 1/2" NB to 18" NB, with diameters between 6.00 mm and 914.4 mm and a variety of 0.3 mm to 50 mm in thickness, can be produced and shipped in a variety of forms, including rounds, squares, rectangles, coils, seamless, ERW, welded, fabricated, and CDW, in compliance with our specific requirements and specifications of our respective buyers and buyers' requirements and specifications. High-tech machines and careful processes for heat treatment in production make them strong, resistant to corrosion, and polished with a high level of surface finish and passivation for a high level of purity and durability in performance and durability in use.
Other than our 321H range, stainless steel 321 pipes, with a similar beneficial property of 321H but with a lesser level of carbon, are present with us. SS 321 pipes have high demand in processes in industries with a high demand for intergranular corrosion resistance, such as in chemical processing industries and in parts for use in aeronautics industries. SS 321 pipes exhibit high formability and weldability, and hence industries with high-performance requirements but no loss in structural integrity utilize them.
| Specification | ASTM A249, ASTM A269, ASTM A213, ASTM A312, ASTM A358, ASME SA249, ASME SA269, ASME SA213, ASME SA312, ASME SA358 EN 10216-5, EN 10217-7 | 
| Pipes Other Grades | 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC. | 
| Pipes Type | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish | 
| Pipes Form | Round Pipes, Square Pipes, Rectangular Pipes | 
| Outer Diameter Size | SEAMLESS - 1/2" NB TO 18" NB WELDED / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB  | 
                                    
| Wall Thickness | SCH 20, 30, 80, 60, 120, 160, and 140, STD, XS, and XXS (3 mm to 100 mm Thickness) | 
| Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. | 
| Pipes Ends | Plain Ends / Beveled Ends | 
| Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw | 
| Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated | 
| 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 | ||||
| 321H | 515 | 205 | 40 | 95 | 217 | 
| 321H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
| 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  | 
                                    
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