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Navgraha Steel & Engg Company have made their presence felt in the market industry strongly Inspite of the growing competition. Setting an example for others is done by us proudly. Alloy 28 pipes refer to varied purposes of industrial use at a time. They are quite famous for their pitting fighting ability. Alloy 28 pipes display fantastic welding ability. Working amongst strong acids is their signature feature. Not getting cracked on the surface is one more additional yet striking feature of Alloy 28 pipes. The outstanding combination of carbon, nickel, silicon, manganese, phosphorous, sulfur, copper, and nitrogen is very compatible and useable. Industries using them find them beneficial. Alloy 28 pipes can fit well into any end of the gadget. Threading, welding, forming processes can be used to attach them to the machines.
These pipes are available in customized and default forms; besides, we also manufacture the different types of these grades. With the help of this grade, we offer the best surface finishing. We offer great specifications such as designs, shapes, sizes, materials, grades, and other specifications. They work reliably with different applications.
Alloy 28 pipes are manufactured using high quality raw materials and tested Alloy 28 Pipes at each production stage to ensure its quality is not compromised. Alloy 28 Pipes is a Stainless Steel Alloy that offers high corrosion resistance in any working environment. These Alloy 28 pipes have great characteristics and attributes that offer good corrosion resistance in strong acids, very good resistance to stress corrosion cracking in hydrogen sulfide (h2s), and chloride-containing environments, very good resistance to intergranular corrosion, high resistance to pitting and crevice corrosion, and good weldability. These are the different attributes of the Alloy 28 pipes that offer great outcomes with the different sorts of applications.
| Specifications | ASTM B668 / ASME SB668 |
| Dimensional specification | ANSI/ASME B36.19M, ANSI/ASME B36.10M |
| Seamless / Welded Pipe Size | 1 / 8″ NB – 24″ NB |
| EFW Pipe Size | 6″ NB – 48″ NB |
| 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 |
| Manufacturing Shapes | Hydraulic, Round, Rectangle, Square, Hex, Honed |
| Manufacturing Techniques | Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded |
| Schedule Thickness Range | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Pipes End Types | Plain End, Beveled End, Treaded One End, TBE (Treaded Both Ends) |
| Delivery Condition of Pipe | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
| Surface Finish | No.1, No.4, No.8 Mirror Finish, 2B |
| Value Added Services | Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing |
| STANDARD | WERKSTOFF NR. | UNS | EN | AFNOR |
| Alloy 28 | 1.4563 | N08028 | X1NiCrMo31-27-4 | Z1NCDU31-27-03 |





| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Cu |
| Alloy 28 | 0.020 max | 0.6 max | 2.0 max | 0.025 max | 0.010 max | 27.00 | 31 | 3.5 | 1.0 |
| Element | Tensile Strength | Yield Strength (0.2%Offset) | Elongation | Hardness |
| Alloy 28 | 500-750 | 220 | 35 % | 230 |
