Harshita Stainless deals in high-quality Stainless Steel EFW (Electric Fusion Welded) Pipes from Delhi, India. Our EFW pipes are made by rolling and welding stainless steel plate edges. They have a smooth internal surface and uniform wall thickness. They conform to ASTM, API, and EN standards for water, gas, and structural purposes. They are available in different grades and sizes and are economical substitutes for seamless pipes in low-pressure systems. Harshita Stainless is made sure of weld integrity by X‑ray inspection and complete traceability. We provide throughout India for infrastructure and mechanical projects where reliability and value meet.
EFW pipes are constructed from SS 304, 316, and 316L, containing 18–20% chromium and 8–12% nickel. They provide tensile strength of 500–700 MPa and yield strength of approx. 200–300 MPa. Electric fusion weld process provides high weld quality. Dimensions remain uniform, with smooth finish on interior surfaces. With suitable pressure class rating, these pipes are suitable for structural, plumbing, and process systems, providing a combination of performance and cost-effectiveness.
| Range : | 1/8” NB to 36” NB, 1/4” OD to 36” OD |
|---|---|
| Outer Diameter : | 6.35 mm O.D to 114.3 mm O.D |
| Thickness : | 0.8 mm to 12.7 mm |
| Length : | up to 26 Meters |
| Specifications : | ASTM A312 / ASTM SA312 |
| Types : | As Welded, EFW, ERW |
| End : | Plain End, Beveled End |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304 | min. max. | – 0.08 | – 2.0 | – 0.75 | – 0.045 | – 0.030 | 18.0 20.0 | – | 8.0 10.5 | – 0.10 |
| 304L | min. max. | – 0.030 | – 2.0 | – 0.75 | – 0.045 | – 0.030 | 18.0 20.0 | – | 8.0 12.0 | – 0.10 |
| 304H | min. max. | 0.04 0.10 | – 2.0 | – 0.75 | -0.045 | – 0.030 | 18.0 20.0 | – | 8.0 10.5 | – |
| Element | SS 304 |
|---|---|
| Density | 8.0 g/cm3 |
| Melting Point | 1400 °C (2550 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
| Elongation | 35 % |
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Yes, Stainless Steel EFW pipes can be used for underground applications due to their corrosion resistance, strength, and durability, making them ideal for transporting fluids and gases in harsh environments.
To select the right Stainless Steel EFW pipes, consider factors like the material grade, pipe size, pressure requirements, environmental conditions, and compatibility with the substances being transported. Consult with an expert if needed.
Stainless Steel EFW pipes are sized based on their nominal diameter (ND) and wall thickness, which determine their strength, pressure capacity, and suitability for various applications. Standard sizing follows industry specifications.
Common grades of stainless steel used in EFW pipe manufacturing include 304, 316, 316L, and 321. These grades offer excellent corrosion resistance, strength, and durability for various industrial applications.
Stainless Steel EFW Pipes find applications in water distribution, HVAC systems, factory piping, chemical piping, and structural columns. They are appropriate for medium-pressure applications such as potable water, cooling water, irrigation, and fire suppression. They have a smooth inner surface that minimizes fouling and pressure drop. Harshita Stainless provides EFW pipes throughout Delhi and India to support municipal and industrial infrastructure where economical, long-lasting piping is required.
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