Mbemba Stainless is a prominent manufacturer and supplier located in Kinshasa, Congo, known for its top-notch Stainless Steel 420 Pipes. The company is dedicated to providing high-performance piping solutions that boast remarkable strength, hardness, and wear resistance. Crafted from high-grade 420 stainless steel and utilizing cutting-edge fabrication technology, these pipes are perfect for applications that face high stress, temperature, and mechanical wear. Mbemba Stainless caters to vital industries like petrochemical, marine, power generation, and mechanical engineering, offering Stainless Steel 420 Pipes that adhere to international standards for durability, precision, and corrosion resistance.
Stainless Steel 420 Pipes are made from martensitic stainless steel, which includes chromium (12–14%) and carbon (0.15–0.40%), along with trace amounts of manganese, silicon, and sulfur. This unique blend provides high strength, decent corrosion resistance, and excellent polishability. On the mechanical side, 420 stainless steel delivers impressive tensile and yield strength, outstanding hardness, and moderate ductility. When heat-treated correctly, it can reach a hardness of up to 50 HRC while maintaining excellent wear resistance, making it ideal for heavy-duty and high-temperature applications.
| Item | Stainless Steel 420 Pipe |
| Standard | GB, AISI, ASTM, ASME, EN, BS, DIN, JIS |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Outer Diameter Size | SEAMLESS – 1/2″ NB TO 18″ NB WELDED / ERW- 1″ NB TO 16″ NB EFW – 8″ NB TO 110″ NB |
| Form | Round Pipes, Square Pipes, Rectangular Pipe, “U” Shape Pipes, Hydraulic Pipes |
| Wall Thickness | Schedule 10 To Schedule 160 (3 mm to 100 mm Thickness) |
| Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size End: Plain End, Beveled End, Treaded |
| Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
| Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiographic Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
| Fe | C | Mn | Si | Cr | Ni* | Mo* | P | S | Cu* | Al* | Sn* |
|---|---|---|---|---|---|---|---|---|---|---|---|
Balance | 0.15-0.40% | 1.00% max | 1.00% max | 12.00-14% | 0.50% max | 0.50% max | 0.04% max | 0.03% max | 0.50% max | 0.15% max | 0.05% max |
| Property | Metric |
|---|---|
Density | 7.74 g/cm3 |
Elastic Modulus | 200 GPa |
Electrical Resistivity | 0.55 x 10-7 .m |
Tensile Strength | 655 MPa |
Yield strength (Temper: Annealed) Minimum 0.2% offset | 40,000 psi |
Yield Strength (Temper: Hardened + 350°F) Typical 2% offset | 195,000 psi |
Elongation (% in 50 mm) | 25 |
Brinell Hardness (HB) | 241 max |
Contact us to get a quick quote for your requirement.
We ensures the highest quality of stainless steel 420 pipes through rigorous testing procedures, including chemical composition analysis, mechanical property testing and surface quality testing Every pipe is certified with industry standards, assuring durability, strength and corrosion resistance to a variety of industrial applications
Stainless Steel 420 ERW (Electric Resistance Welded) pipes are welded from stainless steel strips, offering high hardness and wear resistance, ideal for cutlery, surgical instruments, and high-strength applications.
Stainless Steel 420 EFW (Electric Fusion Welded) pipes are made by fusing stainless steel plates, providing high-strength, wear-resistant pipes suitable for industrial tools and components requiring durability and hardness.
Stainless Steel 420 LSAW (Longitudinally Submerged Arc Welded) pipes are produced using submerged arc welding, offering strength and hardness for large-diameter applications, including industrial and high-stress environments.
Stainless Steel 420 Seamless pipes are manufactured without welding, providing uniform strength and high hardness, ideal for cutlery, surgical tools, and applications requiring excellent wear resistance and durability.
Stainless Steel 420 Welded pipes are made by welding stainless steel sections, offering high hardness and wear resistance, suitable for industrial applications, cutlery, and tools requiring enhanced durability.
Stainless Steel 420 Square pipes feature a square cross-section, providing structural support and high hardness, ideal for use in applications requiring durability, wear resistance, and a unique design.
These Stainless Steel 420 Pipes find their place in industries that demand materials with exceptional mechanical properties and moderate corrosion resistance. They are particularly well-suited for steam turbines, pumps, valves, shafts, and marine equipment. Additionally, these pipes are utilized in petrochemical processing units, power plants, and mechanical systems that operate under high temperature and pressure. Their remarkable hardness and resistance to scaling make them perfect for both structural and functional applications where durability, precision, and reliability are crucial.







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