Njabulo Stainless stands out as a top-notch manufacturer and supplier of Stainless Steel 17-7 PH Pipes, proudly based in Cape Town, South Africa. This company is all about crafting high-quality precipitation-hardening stainless steel pipes that boast impressive corrosion resistance, remarkable strength, and exceptional mechanical performance. Their Stainless Steel 17-7 PH Pipes are specifically designed for applications that demand high hardness, toughness, and stability in dimensions. With cutting-edge manufacturing facilities and rigorous quality control measures, Njabulo Stainless caters to a variety of industries, including aerospace, chemical processing, petrochemical, power generation, and precision engineering, delivering reliable and durable piping solutions for critical structural and high-performance needs.
These Stainless Steel 17-7 PH Pipes are primarily made up of iron, chromium (15–17%), nickel (6–7%), along with trace amounts of aluminum, copper, and columbium (niobium), while keeping carbon content typically below 0.07%. This type of precipitation-hardening stainless steel can reach impressive strength levels through heat treatment, all while maintaining excellent resistance to corrosion. Depending on the temper, the pipes can exhibit tensile strength ranging from 850–1400 MPa, yield strength around 500–1200 MPa, and good elongation properties. They also shine in terms of fatigue resistance, hardness, and stability under mechanical stress and high temperatures.
| Standard | 17-7PH / 1.4568 |
|---|---|
| Size | 1/8” to 48”, Seamless Pipes up to 24” |
| Designation | ASTM A312, ASME SA312, ASTM A269, ASTM A213, ASTM A249, ASTM A270, ASTM A511, ASTM A554, ASTM A778, ASTM A908, ASME SA249 |
| Thickness | 0.4mm up to 30.00 mm, Schedules 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH |
| Type | Seamless, Welded, Cold Drawn, Structural, Hot Finished, Extruded, Annealed & Pickled |
| Form | Round, Square, Rectangular |
| Length | Standard 6-6.1 meter length, 20 Ft, Custom Cut Lengths |
| Application | Variety of springs and washers, Chemical processing equipment, Heat exchangers, Power boilers, Superheater tubes, Components used in high-strength/high-temperature conditions. |
| Element | Content (%) |
|---|---|
| Chromium, Cr | 16-18 |
| Nickel, Ni | 6.50 – 7.75 |
| Manganese, Mn | 1 max |
| Silicon, Si | 1 max |
| Aluminum, Al | 0.75 – 1.50 |
| Carbon, C | 0.09 max |
| Phosphorous, P | 0.040 max |
| Sulfur, S | 0.030 max |
| Iron, Fe | Balance |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 1170 MPa | 170000 psi |
| Yield strength | 965 MPa | 140000 psi |
| Modulus of elasticity | 204 GPa | 29600 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break | 6% | 6% |
| Hardness, Rockwell C | 38 | 38 |
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We tests Stainless Steel 17-7 PH pipes to the utmost extent to assure superior quality and performance. All batches are strictly inspected, and mechanical property tests, corrosion resistance checks, and dimensional accuracy checks are performed on each batch. Pipes are supplied with test certificates that are in compliance with industrial standards.
High-quality 17-7 PH stainless steel pipes offer exceptional strength, corrosion resistance, and durability. Perfect for demanding industrial applications, they provide reliable performance in extreme conditions and harsh environments.
ASTM A312 SS 17-7 PH ERW pipes deliver outstanding strength and corrosion resistance. Ideal for high-stress applications, they ensure durability and reliable performance in challenging industrial environments and applications.
Stainless Steel 17-7 PH capillary pipes offer superior strength and corrosion resistance. Ideal for precision applications, they ensure reliability and durability in demanding environments, combining high performance with long-lasting quality.
SS 17-7 PH spiral welded pipes offer high strength and corrosion resistance, ideal for aerospace and industrial applications. Their spiral weld construction enhances durability and performance in demanding environments.
17-7 PH SS electropolished pipes offer superior corrosion resistance and a smooth finish. Ideal for sanitary and high-performance applications, they provide enhanced durability and reliability in demanding environments.
SS 17-7 PH slot round pipes feature exceptional strength and corrosion resistance with precision slots. Ideal for structural and filtration applications, they ensure durability and high performance in demanding conditions.
Stainless Steel 17-7 PH Pipes find their place in various industries that require a blend of high strength, corrosion resistance, and stability. They are perfect for aerospace structural components, chemical and petrochemical process piping, springs, fasteners, shafts, and high-performance mechanical assemblies. Moreover, they are utilized in precision engineering, power generation equipment, and tooling applications where strength, durability, and corrosion resistance are essential. The combination of high mechanical performance and reliability makes 17-7 PH pipes a go-to choice for demanding industrial and engineering applications.
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