Welded Pipes Manufacturer
At Steel Icon Stainless Pvt. Ltd., we manufacture and supply high-quality welded pipes engineered for strength, corrosion resistance, and long service life in both high-pressure and low-pressure environments. Our welded pipes are available in ERW (Electric Resistance Welded), EFW (Electric Fusion Welded), and SAW (Submerged Arc Welded) formats, crafted using premium stainless steel, carbon steel, alloy steel, and duplex materials.
Our facilities are equipped to produce welded pipes that meet stringent international standards such as ASTM, ASME, DIN, EN, and ISO, suitable for diverse industries like oil & gas, construction, HVAC, chemical processing, food & beverage, water distribution, and marine engineering.
What Are Welded Pipes?
Welded pipes are produced by rolling and welding steel plates or coils into cylindrical shapes. The welding process can create either a longitudinal or spiral weld seam, depending on the method used. These pipes are widely utilized in applications that demand large diameters, cost efficiency, and high mechanical strength.
Welded pipes come in various types, including ERW (Electric Resistance Welded), EFW (Electric Fusion Welded), SAW (Submerged Arc Welded), and LSAW (Longitudinal Submerged Arc Welded). Each type is suited to different welding processes and pressure ratings, ensuring versatility in a range of industrial applications.
| Products |
|---|
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Stainless Steel Bar |
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Fasteners |
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Forged Products |
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Flanges |
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Forged Fittings |
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Stainless Steel Billets |
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Round Corner Square Billets |
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Stainless Steel Pipes |
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Pipe Fittings |
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Valve |
Product Specifications
| Property | Specification |
|---|---|
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Material Grades |
SS 304, 316, 321, 310, Duplex 2205/2507, CS, MS, Alloy Steel
|
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Size Range |
1/2” NB to 72” NB |
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Wall Thickness |
SCH 5 to SCH 160 / XXS |
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Length |
Single Random, Double Random, Cut Lengths |
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Form |
Round, Square, Rectangular |
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Weld Types |
ERW, EFW, SAW, LSAW |
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Standards |
ASTM A312, ASTM A358, ASTM A671, ASME B36.10/B36.19, EN 10217, ISO 3183 |
Types of Welded Pipes
Here’s a more detailed breakdown of the different types of welded pipes:
ERW (Electric Resistance Welded) Pipes
These pipes are manufactured by welding flat steel strips together using electric resistance heating. ERW pipes are ideal for medium-pressure applications, offering cost-effective solutions in industries such as water transport, structural piping, and general fluid conveyance. They are commonly used in a wide range of applications where precision and strength are key, such as in HVAC and oil & gas.EFW (Electric Fusion Welded) Pipes
EFW pipes are created by fusion welding, where the pipe edges are joined together using an electric arc. These pipes are designed for high-temperature services and are commonly used in critical applications such as power generation and chemical processing, where high heat resistance and durability are essential. EFW pipes are ideal for larger diameters and thicker walls.SAW (Submerged Arc Welded) Pipes
SAW pipes are welded using a submerged arc welding process, which provides deep penetration and ensures high-strength joints. These pipes are perfect for large-diameter, high-strength piping systems typically used in oil and gas transmission, offshore drilling, and other heavy-duty applications. SAW pipes excel in handling high-pressure and high-stress environments.LSAW (Longitudinal Submerged Arc Welded) Pipes
LSAW pipes are produced by welding steel plates along their length with a submerged arc welding technique. These pipes are often preferred for structural applications, including pipeline systems that require high-strength performance. LSAW pipes are commonly used in industries such as oil & gas, water supply, and construction, where large-diameter and high-strength pipes are required for efficient transportation of fluids.
Available Grades
Here’s a detailed overview of the different steel grades we offer:
Stainless Steel
304: The most widely used stainless steel grade, offering excellent corrosion resistance, formability, and weldability. Ideal for a wide range of industrial applications.
304L: A lower carbon version of 304, providing improved weldability and resistance to sensitization in welding heat-affected zones.
316: Known for its superior corrosion resistance, especially in chloride environments, making it ideal for marine and chemical processing industries.
316L: A low-carbon version of 316, providing enhanced weldability and corrosion resistance in applications where exposure to extreme environments is a concern.
321: A stabilized stainless steel grade offering excellent resistance to intergranular corrosion, particularly in high-temperature applications.
310: A high-alloy steel offering excellent oxidation resistance at elevated temperatures, making it ideal for applications such as furnaces and heat exchangers.
Duplex Steel
UNS S31803: Known for its good corrosion resistance and high strength, this duplex steel is commonly used in environments involving chloride stress corrosion.
UNS S32205: An improved version of UNS S31803, offering enhanced resistance to corrosion, especially in marine and acidic environments.
UNS S32750: A super duplex steel grade offering excellent resistance to pitting, crevice, and stress corrosion, often used in the oil and gas industry.
UNS S32760: A high-performance super duplex steel with exceptional resistance to corrosion, often used in aggressive environments such as chemical processing.
Carbon Steel
A53: A standard carbon steel grade used for structural and pressure applications, typically in pipes and fittings.
A106: A high-carbon steel grade commonly used in high-temperature services, such as in power plants and refineries.
API 5L Gr B: A specification for seamless and welded steel pipe for the oil and gas industry, offering reliable performance in transportation pipelines.
ASTM A671: Used for electric-fusion-welded steel pipe for high-pressure and high-temperature service, typically found in industrial applications.
Alloy Steel
P11: A low-alloy steel used for pressure vessel applications that require high-temperature strength and resistance to oxidation.
P22: Similar to P11, but designed for applications that require higher resistance to creep and enhanced mechanical properties at elevated temperatures.
P91: A chromium-molybdenum alloy steel offering high strength and resistance to creep, commonly used in power plants for high-temperature applications.
WP5: Alloy steel designed for high-temperature applications, often used in the construction of boilers and pressure vessels.
WP9: An alloy steel grade offering excellent resistance to oxidation and high-temperature strength, typically used in power generation and petrochemical industries.
Chemical Composition (Typical for SS 304 / SS 316)
| Element | SS 304 (%) | SS 316 (%) |
|---|---|---|
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Carbon (C) |
0.08 max |
0.08 max |
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Chromium (Cr) |
18.0 – 20.0 |
16.0 – 18.0 |
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Nickel (Ni) |
8.0 – 10.5 |
10.0 – 14.0 |
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Molybdenum (Mo) |
— |
2.00 – 3.00 |
Mechanical Properties
| Property | SS 304 / SS 316 |
|---|---|
|
Tensile Strength |
515–750 MPa |
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Yield Strength |
205–310 MPa |
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Elongation (%) |
≥ 30% |
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Hardness (HRB) |
≤ 95 |
Applications of Stainless Steel Pipes
Construction &
Infrastructure
Marine &
Offshore
Automotive &
Transportation
Manufacturing &
Heavy Equipment
Chemical &
Pharmaceutical Plants
Oil & Gas
Food & Beverage
Industry
Benefits of Welded Pipes
- Cost-effective compared to seamless pipes
- Available in larger diameters
- Quick production turnaround
- Excellent weld integrity and pressure ratings
- Customizable lengths and wall thicknesses
Frequently Asked Questions
Standard orders ship within 3-7 days, while custom orders take 7-14 days, depending on requirements.
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