Welded Tubes Manufacturer in India

Welded Tubes Specification

Our welded tubes come in a wide range of diameters, walls, grades, and finishes. As a welded tubes manufacturer, we build to your standard, drawing, and delivery condition, and we cut, bend, polish, and pack each order to your needs.

Welded Tube Standards and Specifications

A standard fixes the grade, size limits, tolerance, testing, and delivery condition of the tube. We make welded tubes to the codes below and add third-party inspection on request.

Welded Tubes Material and Grades

Each grade below comes with a mill test certificate that lists its chemistry, UNS number, and standard. If your project needs a grade that is not on this list, we can supply it against a custom specification.

Common Materials for Welded Tubes

Stainless steel is widely used for welded tubes because of its corrosion resistance, strength, and clean surface. Common grades include 304/304L (UNS S30400/S30403) and 316/316L (UNS S31600/S31603) for food, chemical, water, and general industrial applications. 321, 347, and 904L are suitable for higher-temperature or more corrosive environments, while 201 and 430 are often used for decorative and mechanical applications.

Carbon steel welded tubes manufactured to ASTM A178, ASTM A214, and ASTM A500 are used for boilers, condensers, structural work, and general engineering. Duplex grades UNS S32205 and S32750 offer higher strength and good resistance to chloride environments.

A welded tubes manufacturer can recommend the suitable material based on the fluid, operating pressure, temperature, corrosion conditions, and applicable design code. Always specify the grade, standard, and tube condition when placing an order.

What Is the Difference Between Welded Tubes and Seamless Tubes?

The main difference is the seam. Welded tubes come from rolled strip and carry one longitudinal weld. Seamless tubes come from a solid billet and carry none. Modern welded tubes have annealed, tested welds and an even wall, so they serve most boiler, heat exchanger, sanitary, mechanical, and structural jobs at a lower price. Seamless tubes suit the highest pressures and temperatures. Also note that design codes such as ASME B31.3 apply a weld joint factor to welded tubes, often 0.85, unless the weld is fully examined, so the allowed pressure can be lower than for the same seamless tube.

Choose welded tubes when you want a lower price, long lengths, and a good finish. Choose seamless tubes when the tube runs very hot or very high pressure.

Welded Tubes Chemical Composition

Chemistry sets how strong, weldable, and corrosion resistant a grade is. Values are weight percent, maximum unless a range shows.

Carbon Steel Welded Tubes

Stainless, Ferritic and Duplex Welded Tubes (ASTM A249, A268, A269, A554, A789)

Welded Tubes Mechanical Properties

Mechanical properties show how much load a welded tube carries before it stretches (yield) or breaks (tensile). Values are minimum unless marked max.

Welded Tube Size and Weight Chart

Welded tubes are ordered by outside diameter and wall thickness. The first chart covers round tubes, and the second covers square tubes. Weights are in kg per metre for carbon steel, and stainless steel tube weighs about 2% more.

Round Welded Tubes, Weight in kg per Metre

To work out the weight of any round size, use Weight (kg/m) = (OD − Wall) × Wall × 0.02466, with both values in mm.

Square Welded Tubes, Approximate Weight in kg per Metre

Square tube weight uses Weight (kg/m) = 0.00785 × 4 × Wall × (Side − Wall), with values in mm. The result ignores corner radii, so real weights run slightly lower. We also make rectangular and oval sections to your drawing.

Available Sizes, Dimensions and Tolerances

We supply welded tubes from 1/4" to 6" OD, in walls from 22 BWG (0.71 mm) to 10 BWG (3.40 mm) and heavier walls up to 6.35 mm. Tubes do not use schedule numbers. You order them by outside diameter and wall thickness, and the standard sets how far each can vary. A welded and drawn tube holds a much smaller size variation than an as-welded tube, which is why heat exchangers and sanitary lines often call for drawn tubes.

Standard lengths are 6 m and 12 m, plus random lengths and exact cut lengths for heat exchangers. As a welded tubes supplier in India, we hold ready stock of popular sizes, subject to availability, and we bend tubes into U-shapes on request.

Welded Tubes We Manufacture and Supply

Our range includes stainless steel, carbon steel, duplex, super duplex, and nickel alloy welded tubes for industrial, engineering, architectural, and process applications. We supply boiler tubes, heat exchanger tubes, condenser tubes, sanitary tubes, mechanical tubes, structural tubes, and decorative polished tubes, along with square, rectangular, and oval profiles.

Welded tubes are available in straight and bent forms, with options for different end finishes, surface treatments, markings, inspection, and test documentation based on the applicable standard. Buyers comparing welded tubes suppliers can source different materials, grades, sizes, shapes, and specifications to match their application and project requirements.

Applications of Welded Tubes

• Boilers and Feedwater Heaters: Carry hot water and steam at moderate pressure.
• Heat Exchangers and Condensers: Transfer heat in power, chemical, and HVAC systems.
• Food, Dairy and Pharmaceutical: Keep product clean with smooth, polished sanitary tubes.
• Chemical and Process Plants: Resist acids and cleaning chemicals in transfer lines.
• Architecture and Interiors: Form handrails, balustrades, gates, and facade frames.
• Automotive and Exhaust Systems: Shape exhaust pipes, frames, and trims.
• Structural and Mechanical Work: Build machine frames, poles, and supports.
• Water Treatment and Marine: Resist water and salt in piping and cooling lines.

Why Choose Us as Your Welded Tubes Supplier in India?

Since 2005, we have been manufacturing and supplying welded tubes in India for industrial, engineering, architectural, and process applications. Our quality systems hold ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications, with PED 2014/68/EU and TÜV approvals supporting projects that require international compliance.

We use raw materials from approved mills and check each production lot for chemical composition and mechanical properties. Welded tubes undergo full-length eddy current testing, with hydrostatic, flattening, flaring, hardness, PMI, and IGC tests available according to the applicable standard. Orders can include EN 10204 3.1 certificates, while third-party inspection is available when required.

Our welded tubes supplier in India service covers different materials, grades, sizes, wall thicknesses, finishes, and profiles. We can provide cutting, bending, polishing, ready stock, export packing, and shipping documentation. With established export capabilities, we supply customers across 85+ countries and can handle orders of up to 100 tons per month.

Countries We Export Welded Tubes To

Welded tubes manufactured in India reach industrial customers across 85+ countries. Export orders are handled with the required commercial documents, suitable packing for sea or air freight, and inspection support based on the buyer's requirements.

North America: United States, Canada, Mexico

Middle East: United Arab Emirates, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain

Europe: United Kingdom, Germany, France, Italy, Spain, Netherlands

Asia Pacific: Australia, Singapore, Malaysia, Indonesia, Thailand, Vietnam

Africa: South Africa, Egypt, Nigeria, Kenya, Algeria

South America: Brazil, Argentina, Chile, Peru, Colombia

Our experience as a welded tubes exporter allows us to manage orders for different materials, grades, dimensions, finishes, and international standards. We arrange export packing, inspection documentation, and shipment coordination according to the destination and project requirements.