Manufacturer, Supplier & Exporter of Pump Shaft Round Bar
Riddhi Siddhi Impex is one of the most trusted and reputed manufacturers and suppliers of Pump Shaft Round Bars, engineered specifically to withstand the demanding conditions of pumping systems. These bars are produced with high precision, excellent straightness, and superior mechanical properties to ensure long-term performance in rotating machinery. Pump Shaft Round Bars are used in various types of pumps including submersible pumps, centrifugal pumps, chemical process pumps, slurry pumps, and industrial fluid transfer pumps...
We manufacture Pump Shaft Round Bars in a wide range of premium materials such as Stainless Steel 410, 420, 431, 304, 316, Duplex & Super Duplex, as well as high-strength alloy steels depending on the pump application. These grades are chosen for their exceptional corrosion resistance, hardness, tensile strength, and ability to withstand continuous rotational stress. The bars are produced through advanced processes such as centerless grinding, precision straightening, heat treatment, and polishing to achieve tight tolerances and excellent surface finish..
The key advantage of our Pump Shaft Round Bars lies in their high straightness accuracy, often within 0.5 mm per meter, ensuring vibration-free pump operation. Each bar undergoes strict metallurgical testing, including ultrasonic testing, PMI testing, hardness tests, and microstructure inspection. These tests guarantee flawless quality and prevent premature shaft failure in harsh working conditions such as saltwater, chemicals, oil, and high-temperature environments..
As a leading domestic supplier, Riddhi Siddhi Impex delivers Pump Shaft Round Bars to major Indian cities including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru, Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, Rajpipla, and other industrial locations..
Riddhi Siddhi Impex focuses on maintaining global quality standards and customer satisfaction by offering pump shaft bars with excellent machinability, high wear resistance, and dimensional accuracy. Our experienced team guides customers in choosing the right grade and specification based on their pump design, fluid type, operating pressure, and environmental conditions..
<Pump Shaft Round Bar Specification
| Specification | Details |
|---|---|
| Product | Pump Shaft Round Bar |
| Diameter Range | 6 mm to 120 mm |
| Length | 1000 mm to 6000 mm (Custom Cut Available) |
| Material Grades | SS 410, 420, 431, 304, 316, Duplex & Super Duplex |
| Surface Finish | Bright, Polished, Black, Turned, Ground & Polished |
| Tolerance | h6, h7, h8 or Custom |
| Standards | ASTM A276, A479 / ASME SA276, SA479 |
Chemical Composition (Typical - Stainless Steel 410/420/431)
| Element | SS 410 | SS 420 | SS 431 |
|---|---|---|---|
| Carbon (C) | 0.15 max | 0.30–0.40 | 0.20 max |
| Chromium (Cr) | 11.5–13.5 | 12–14 | 15–17 |
| Manganese (Mn) | 1.00 max | 1.00 max | 1.00 max |
| Silicon (Si) | 1.00 max | 1.00 max | 1.00 max |
| Nickel (Ni) | 0.50 max | 0.50 max | 1.25–2.50 |
| Phosphorus (P) | 0.04 max | 0.04 max | 0.04 max |
| Sulfur (S) | 0.03 max | 0.03 max | 0.03 max |
Mechanical Properties
| Property | SS 410 | SS 420 | SS 431 |
|---|---|---|---|
| Tensile Strength | 450–650 MPa | 700–900 MPa | 750–1000 MPa |
| Yield Strength | 250 MPa | 450 MPa | 500 MPa |
| Hardness (HB) | 180–220 | 200–250 | 215–285 |
| Elongation | 20% | 15% | 18% |
Pump Shaft Round Bar Dimension Chart
| Diameter (mm) | Weight (kg/m) |
|---|---|
| 6 | 0.222 |
| 8 | 0.395 |
| 10 | 0.617 |
| 12 | 0.888 |
| 16 | 1.579 |
| 20 | 2.466 |
| 25 | 3.853 |
| 32 | 6.316 |
| 40 | 9.865 |
| 50 | 15.395 |
| 63 | 24.56 |
Equivalent Grades
| Grade | UNS | WERKSTOFF | BS | EN |
|---|---|---|---|---|
| SS 410 | S41000 | 1.4006 | 410S21 | X12Cr13 |
| SS 420 | S42000 | 1.4021 | 420S37 | X20Cr13 |
| SS 431 | S43100 | 1.4057 | 431S29 | X17CrNi16-2 |
Equivalent Standards
| Standard | Description |
|---|---|
| ASTM A276 | Stainless Steel Bars & Shapes |
| ASTM A479 | Stainless Steel Bars for Pressure Vessels |
| ASME SA276 | Stainless Steel Bars (ASME Spec) |
| ASME SA479 | Pressure Vessel Stainless Steel Bars |
Other Types of Pump Shaft Bars
| Type |
|---|
| Stainless Steel Pump Shaft Bar |
| Duplex Pump Shaft Bar |
| Super Duplex Pump Shaft Bar |
| Bright Pump Shaft Bar |
| Ground & Polished Pump Shaft Bar |
| Heat Treated Pump Shaft Bar |
| Custom Machined Pump Shaft Bar |
Our commitment to quality, reliability, and customer-centric solutions makes Riddhi Siddhi Impex one of the most preferred and trusted Pump Shaft Round Bar Domestic Suppliers in India. Whether for standard pumps or customized engineering projects, we provide high-performance shaft bars suitable for all industrial environments.
- Q1: Which grade is best for marine pump shafts?
- A1: For marine environments, SS316 / 316L or Duplex S32205 are commonly recommended due to improved resistance to chloride-induced corrosion and pitting. For extremely aggressive conditions, Super Duplex or nickel alloys can be considered.
- Q2: Do you supply pre-machined or finish-ground shafts?
- A2: Yes. Riddhi Siddhi Impex can supply cut-to-length, turned, ground and polished bars or near-net forgings and can provide additional machining services to deliver near-finish or finish-ready shafts per customer drawings.
- Q3: What certification & testing do you provide?
- A3: Material Test Certificates (EN 10204 3.1/2.2), chemical analysis, hardness & mechanical test reports, and NDT reports (UT, MPI) are available upon request. PMI (positive material identification) can also be arranged.
- Q4: How do I choose between C45, 42CrMo and stainless for a pump shaft?
- A4: Choice depends on operating conditions. Use C45/EN8 for general-purpose, cost-sensitive shafts with moderate loading. Choose 42CrMo (4140) for heavy-duty, high-stress, fatigue-critical shafts requiring higher strength and hardenability. Choose stainless grades (304/316/duplex) when corrosion resistance (especially chlorides or chemicals) is required.
Cities we have supplied our products to
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Countries we have supplied our products to
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