• Welded Carbon Steel Pipes & Tubes Suppliers in Mumbai, India – We Manufacture & Sell Welded Carbon Steel Pipes at Lowest Prices! Buy Quality Welded Carbon Steel Pipes from an Inventory of 1000 tons in Stock in Mumbai! Metallica is a specialist stockholder and supplier of carbon steel welded pipes in Mumbai, Maharashtra, India. We manufacture and supply carbon steel pipes and tubes for critical applications in industries like oil & gas, aviation, aerospace, petrochemicalnatural gas, paper making, industrial gas, heat exchange and others.
  • We are manufacturers, stockholder and suppliers of carbon steel pipes as per ASTM standards. All materials are also available in accordance to equivalent DIN/ EN standards and grades. All our carbon steel welded pipes and tube products are supplied with 3.1 specific test certificates, according to EN 10204. Certification according to 3.2 can be agreed at the time of ordering.
  • Metallica makes it easy for you to source top quality carbon steel welded pipes at the lowest prices in India. We specialize in providing fast deliveries to your factory directly from our warehouse or our principal suppliers.

On-Time Delivery with Quality Assurance and Price Guarantee for Steel Pipes

Welded Carbon Steel Pipe Manufacturer, Wholesaler, Dealer, Supplier and Distributor In India and Abroad at Low Price
  • As one of the largest manufacturer of welded carbon steel pipes, we have over 6000 tons in stock

  • Carbon Steel Welded Pipes Available at around Rs. 240/KG for Sale in India.

  • Our Annual Sales Volume for Welded Steel Pipes is Over 25,000 tons in India and Overseas.

  • Carbon Steel Welded Pipes, are Sold with Complete Range of Related Pipe Fittings and Flanges

ASTM Standard Specifications of Welded Carbon Steel Pipes & Tubes

Standard Description
ASTM A179/A179M Seamless cold drawn low alloy steel heat exchanger and condenser tubes.
API 5L Line pipe.
ASTM A53M Black & Zinc Coated Welded and Seamless Steel Pipe.
ASTM A106M Seamless carbon steel pipe for high temperature service.
ASTM A105M Carbon steel forgings for piping applications.
ASTM A234M Piping fittings of wrought carbon steel and alloy steel for moderate and high temperature service.
ASTM 3799 Steel pipe fittings, screwed and socket weldability for the petroleum industry.
AS 1163 Structural steel hollow sections
AS 1074 Steel tubes and tubulars for ordinary service
BS13872 Screwed and socketed steel tube and tubulars
EN10241 Steel threaded pipe fittings

Carbon Steel Welded Pipe Specifications

Product Standard Size Range Steel Grade
Electric-Resistance-Welded Steel Pipes ASTM A135 42.2~114.3 x 2.11~2.63 A
ERW and Hot-dip Galvanized Steel Pipes ASTM A53 21.3~273 x 2.11~12.7 A, B
Pipes for Piling Usage ASTM A252 219.1~508 x 3.6~12.7 Gr2, Gr3
Tubes for General Structural Purpose ASTM A500 21.3~273 x 2.11~12.7 Carbon Steel
Square Pipes for General Structural Purpose ASTM A500 25 x 25~160 x 160 x 1.2~8.0 Carbon Steel
Threaded Steel Pipes DIN 2440 21~164 x 2.65~4.85 Carbon Steel
Screwed and Socketed Steel Tubes BS 1387 21.4~113.9 x 2~3.6 Carbon Steel
Scaffolding Pipes EN 39 48.3 x 3.2~4 Carbon Steel

Stock Range of Welded Carbon Steel Pipes

Product Welded Carbon Steel Pipe, Carbon Steel Welded Pipe
Pipe Standards and Grades SA53 / A53 Welded — Grade B
API 5L Welded — Grades B (X42, X52, X60, X65 and X70) PSL 1, PSL 2
A671 / A672 in all grades
Typical Size Range ERW: 3/4″ thru 26″ up to 1.000″ thick
DSAW: 20″ thru 72″ up to 3.000″ thick
R&W: 24″ thru 120″ up to 4.000″ thick
Applications – Transporting water and sewage
– Oil and gas industries
– Boiler and condenser tubes
– High-pressure applications
– Chemical processing
Technology Hot Rolled, Cold Drawn, Extruded, Cold Finished, Heat Treated
Finish Annealed & pickled, Bright Annealing, Polished
Markings Heat Number, Size, Grade, Manufacturing Spec., Commodity Name or as per customer request
Testing & Inspections Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test,  Hardness Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, NDT TEST ( ET TEST, UT TEST), Third Party Inspection
Pipe Ends Square Ends (straight cut, saw cut, and torch cut), or Beveled for welding
Packing Plastic Plugs in Both Ends, Hexagonal Bundles of Max. 2,000kg with Several Steel Strips, Plastic End Caps

Chemical Composition Of Welded Carbon Steel Pipe

Composition, max, %
Elt C Mn P S
Type S (seamless pipe)
Gr. A 0.25 0.95 0.05 0.045
Gr. B 0.3 1.2 0.05 0.045
Type E (electric-resistance-welded)
Gr. A 0.25 0.95 0.05 0.045
Gr. B 0.3 1.2 0.05 0.045
Type F (furnace-welded pipe)
Gr. A 0.3 1.2 0.05 0.045
Composition, max, %
Elt Cu (1) Ni (1) Cr (1) Mo (1) V (1)
Type S (seamless pipe)
Gr. A 0.4 0.4 0.4 0.15 0.08
Gr. B 0.4 0.4 0.4 0.15 0.08
Type E (electric-resistance-welded)
Gr. A 0.4 0.4 0.4 0.15 0.08
Gr. B 0.4 0.4 0.4 0.15 0.08
Type F (furnace-welded pipe)
Gr. A 0.4 0.4 0.4 0.15 0.08
1. The total composition for these five elements shall not exceed 1.00%.

Difference Between Seamless and Welded Carbon Steel Pipe. How to Identify Whether a Pipe is Seamless or Welded?

Electric Resistance Welding (ERW) pipe is manufactured by rolling metal and then welding it longitudinally across its length. Seamless pipe is manufactured by extruding the metal to the desired length; therefore ERW pipe have a welded joint in its cross-section, while seamless pipe does not have any joint in its cross-section through-out its length.

In Seamless pipe, there are no welding or joints and is manufactured from solid round billets. The seamless pipe is finished to dimensional and wall thickness specifications in sizes from 1/8 inch to 26 inch OD. Applicable in for High-pressure applications such as Hydrocarbon Industries & Refineries, Oil & Gas Exploration & Drilling, Oil & Gas Transportation and Air and Hydraulic cylinders, Bearings, Boilers, Automobiles, etc.

ERW (Electric Resistance Welded) pipes are welded longitudinally, manufactured from Strip / Coil and can be manufactured upto 24” OD. ERW pipe cold formed from a ribbon of steel pulled through a series of rollers and formed into a tube which is fused through a electric charge. It is mainly used for low/ medium pressure applications such as transportation of water / oil. Common sizes for ERW Steel Pipe range from 2 3/8 inch OD to 24 inch OD in a variety of lengths to over 100 feet. Surface finishes are available in bare and coated formats and processing can be handled on site to customer specifications.

How to identify whether the pipe is seamless or welded?

If it is ASTM A53,

Type S means seamless.
Type F is furnace but welded,
Type E is Electrical resist welded.
That is how. It is the easiest way to identify whether pipe is Seamless or ERW.

Frequently Used ASTM Grades

Material Pipes Fttg Flg Valves Bolts and Nuts
Carbon Steel A106 Gr A A234 Gr WPA A105 A216 Gr WCB A193 Gr B7
A194 Gr 2H
A106 Gr B A234 Gr WPB A105 A216 Gr WCB
A106 Gr C A234 Gr WPC A105 A216 Gr WCB
Carbon Steel
A335 Gr P1 A234 Gr WP1 A182 Gr F1 A217 Gr WC1 A193 Gr B7
A194 Gr 2H
A335 Gr P11 A234 Gr WP11 A182 Gr F11 A217 Gr WC6
A335 Gr P12 A234 Gr WP12 A182 Gr F12 A217 Gr WC6
A335 Gr P22 A234 Gr WP22 A182 Gr F22 A217 Gr WC9
A335 Gr P5 A234 Gr WP5 A182 Gr F5 A217 Gr C5
A335 Gr P9 A234 Gr WP9 A182 Gr F9 A217 Gr C12
Carbon Steel
A333 Gr 6 A420 Gr WPL6 A350 Gr LF2 A352 Gr LCB A320 Gr L7
A194 Gr 7
A333 Gr 3 A420 Gr WPL3 A350 Gr LF3 A352 Gr LC3

Effects of Alloying Elements on Steel

•Manganese – strength and hardness; decreases ductility and weldability; effects hardenability of steel.
•Phosphorus – increases strength and hardness and decreases ductility and notch impact toughness of steel.
•Sulfur decreases ductility and notch impact toughness Weldability decreases. Found in the form of sulfide inclusions.
•Silicon – one of the principal deoxidizers used in steel making. In low-carbon steels, silicon is generally detrimental to surface quality.
•Copper – detrimental to hot-working steels; beneficial to corrosion resistance (Cu>0.20%).
•Nickel – ferrite strengthener; increases the hardenability and impact strength of steels.
•Molybdenum –  increases the hardenability; enhances the creep resistance of low-alloy steels.

Manufacturing Process of Welded Carbon Steel Pipe

Welded Pipes are manufactured from plate or from continues coil or strips. To manufacture welded pipe, first, plate or coil is rolled in the circular section with the help of plate bending machine or by a roller in the case of continuous process.

At the start of the welded pipe manufacturing process, so called slabs or billets are cast in a steel mill. Dependent on the external dimensions and wall thickness there are different methods of producing welded pipes and tubes. The welded pipes are produced by three types of welding processes:

  1. Electric Resistance Welding (ERW)
  2. Fusion Welding (EFW)
  3. Double Submerged Arc Welding (DSAW)

In the ERW and EFW manufacturing process welded pipes are formed by hot or cold rolling plate and welding the seam. In order to keep the outside (O.D.) surface of a welded pipe smooth and uniform a cutting tool called scarfing blade is used to remove the weld flash. Scarfing from the inside (I.D.) welded flash is also possible. With a heat treating at the end of the manufacturing process the weld zone of the steel pipe can be made less visible. Due to the weld seam lower operating pressures are stated in accordance with ASME compared to seamless pipes. In general welded tubes possess tighter dimensional tolerances than seamless pipes and are less costly if produced in same quantities. The process of producing Double Submerged Arc Welded Pipes first contains forming steel plates into cylindrical shapes. Later on the edges of the rolled plate are forged so that v-shaped notches are on the exterior and interior area of the seam. Then the pipe seam is being welded by an arc welder submerged under flux. In the case of high thickness pipe, multiple pass welding is done.

Click Here to Read More About Manufacturing Process.

What are the Steel Pipe Sizes?

Steel pipe sizes

Pipe size is quoted as a “Nominal Pipe Size” or NPS. The origin of the NPS numbers for smaller pipes (< NPS 12) is different to the origin for larger diameter pipes. However, all pipes of a specific NPS number have the same external or outer diameter (OD). The internal diameter will vary depending on the wall thickness of the metal. The reason for this is so that the same structural supports can be used for all piping of a specific NPS number regardless of the wall thickness.


Steel pipe schedules are a way to describe the wall thickness of the pipe. This is a critical parameter as it is directly related to the strength of the pipe and the suitability for specific applications. A pipe schedule is a dimensionless number and is calculated based on the design formula for wall thickness, given the design pressure and allowable stress.

Examples of schedule numbers are as follows: 5, 5S, 10, 20, 30, 40, 50, 60, 80, 100, 120, 140, 160, STD, XS, and XXS—with the most common being schedules 40 and 80. As the schedule number increases, the wall thickness of the pipe increases. The schedule number of a pipe therefore defines the internal diameter, as the OD is fixed by the NPS number.

Over 10000 Tons in Stock for Carbon Steel Welded Pipes!

ISMT & Jindal Steel Pipes Dealers, Original MTR's Provided with All Materials

As one of the biggest carbon steel welded pipe stockholder and supplier in India, Metallica carries inventory of over 10,000 tons in its warehouses in Mumbai, Maharashtra India. We sell our carbon steel pipe products throughout India, and to international clients. We can supply our carbon steel tube products not only in industry-standard lengths and diameters, but also in custom length and diameters.

How are Steel Pipes Certified?

Certification of Steel Pipes

Manufacturers issue a Material Test Report or Mill Test Report to validate that the product meets the chemical analysis and mechanical properties specification. The MTR will contain all relevant data to the product and will accompany the product through its lifecycle.

The following are typical parameters that may be recorded on an MTR:

  • Chemical composition including carbon content, alloys, and sulfur
  • Material size, weight, identification, and grade
  • Material heat number, which ties back to the processing batch
  • Mechanical properties like tensile strength, yield strength, and elongation

At Metallica, we will Provide you with Original MTR’s for all Carbon Steel Welded Pipe Products! We will Send Our Test Certificates, along with Quotation