Steel Pipes

Steel Pipes

API 5L SEAMLESS PIPE, ASTM A53 SEAMLESS PIPE, 15mo3 pipe, DIN 1629 St 52, din 2391 ST 35, EN 10216-1 PIPE, EN 10210 S355J2H, Stainless Steel Pipe Suppliers in Mumbai, India

At Dmsons Metal, we pride ourselves on our demonstrated expertise and extensive experience in working with a wide variety of metals, allowing us to meet the unique requirements of every customer. Being amongst the top 10 steel pipe manufacturers in India, our diverse range of products boasts consistent dimensional accuracy, grades, and specifications, featuring tight tolerance for use in demanding applications such as hydraulic press manufacturing, dam gates, and cranes manufacturing. Trust us to deliver the quality and precision you need for your projects.

ERW Black PIPE, API 5L Pipe, ERW Galvanized Steel Pipe, Pre Galvanized Pipes, API 5L X80 Pipe, K55 PSL1 EN 10255, K55 PSL 1 EN 10219, EN 10217, as 1074, AS NZS 1163:2016 manufacturer in Mumbai, India

Seamless pipes are a type of steel pipes that are manufactured without any welded joints or seams. They are made from solid cylindrical steel billets that are heated and pushed or pulled over a piercing rod to create a hollow tube shape. This process is known as the “piercing” method. The absence of seams or welds makes these pipes highly reliable and strong, as there are no weak points.

ERW stands for Electric Resistance Welding, and ERW pipes are manufactured by rolling metal sheets and then welding the edges using electric resistance welding. The process involves applying pressure to the heated steel sheets to create a bond between the edges, forming a longitudinal seam. These pipes are widely used in various industries and applications.

What is Steel Pipe?

steel pipe is a cylindrical tube primarily made from steel, a versatile and widely used alloy composed mainly of iron and carbon, with small amounts of other elements. This essential component finds extensive application across diverse industries due to its exceptional properties. 

Steel pipes are manufactured through various processes, such as seamless manufacturing, where solid cylindrical steel billets are pierced to create a hollow tube without welded joints or seams, and Electric Resistance Welding (ERW), where steel sheets are rolled and welded at the edges to form a longitudinal seam. These pipes serve a multitude of purposes, including transporting fluids and gases, supporting structures in construction, and facilitating the extraction of oil and gas from wells. Their strength, durability, and corrosion resistance make them reliable for withstanding harsh conditions and high-pressure environments. 

Additionally, steel pipes are recyclable, contributing to sustainability efforts. Embodying strength, efficiency, and environmental friendliness, steel pipes have become an indispensable element in modern infrastructure and industrial development, playing a crucial role in shaping the progress of society.

Dmsons Metal Pvt. Ltd. is a leading supplier and stockist of high quality Pipe such as Seamless Pipes and ERW Pipes in Andheri Mumbai, India. Being among the prominent stainless steel pipe manufacturers in India, our company has played a vital role in the growth and development of the Indian market. We specialize in producing Steel Pipes in various sizes, shapes, and specifications tailored to meet the unique needs of our valued clients. Stainless steel pipe manufacturers in Mumbai ensure that the products are highly resistant to corrosion and cost-effective. Dmsons is a reputed steel pipes and tubes manufacturers in India, renowned for dependability and top-notch quality in the Indian market.

Steel Pipes: Standards & Grades Offered by Dmsons Metal Pvt Ltd

1. Seamless Pipes: – Steel pipes come in various standards and grades to meet different requirements in different industries. Below are some commonly used standards and grades for seamless pipes:

  • API 5L SEAMLESS PIPE: This standard is used for line pipes in the transportation of oil, gas, and other fluids in the petroleum and natural gas industries.
  • ASTM A53 SEAMLESS PIPE: It is a standard specification for black and hot-dipped, zinc-coated, welded, and seamless steel pipes, commonly used for mechanical and pressure applications, as well as for steam, water, gas, and air lines.
  • ASTM A106 SEAMLESS PIPE: This specification covers seamless carbon steel pipes for high-temperature services, such as in refineries and boiler plants.
  • ASTM A335 SEAMLESS PIPE: It is a standard specification for alloy steel pipes used in high-temperature services, commonly used in power plants and chemical industries.
  • ASTM A213 SEAMLESS PIPE: This specification covers seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes.
  • ASTM A179 SEAMLESS PIPE: It is a standard specification for seamless cold-drawn low-carbon steel heat-exchanger and condenser tubes.
  • ASTM A192 SEAMLESS PIPE: This specification covers seamless carbon steel boiler tubes for high-pressure service.
  • ASTM A210 SEAMLESS PIPE: It is a standard specification for seamless medium-carbon steel boiler and superheater tubes.
  • ASTM A333 SEAMLESS PIPE: This specification covers seamless and welded steel pipes for low-temperature service.
  • ASTM A519 SEAMLESS PIPE: It is a standard specification for seamless carbon and alloy steel mechanical tubing.
  • 15mo3 pipe: This refers to a specific grade of seamless pipe, which is used for high-temperature applications.
  • DIN 1629 St 52: A German standard specification for non-alloy steel tubes, used in various mechanical and structural applications.
  • DIN 2391 ST 35: Another German standard specification for seamless precision steel tubes, commonly used in hydraulic and pneumatic systems.
  • EN 10216-1 PIPE: European standard specification for seamless steel tubes for pressure purposes, including both non-alloy and alloy steel grades.
  • EN 10210 S355J2H: This European standard is used for hot-finished structural hollow sections of non-alloy and fine-grain structural steels.
  • BS 3059 GR 320, BS 3059 GR 360, BS 3059 GR 440: British standards covering steel boiler and superheater tubes.
  • JIS G3454, JIS G3455, JIS G3456: Japanese industrial standards for carbon steel pipes used for pressure service, high-temperature service, and low-temperature service, respectively.

2. ERW Pipes: – ERW pipes, which stand for Electric Resistance Welding pipes, come in various standards and grades to cater to different applications. Below are some commonly used standards and grades for ERW pipes:

  • ERW Black PIPE: This refers to electric resistance welded black steel pipes, commonly used for various industrial applications.
  • API 5L Pipe: This standard is used for line pipes in the transportation of oil, gas, and other fluids in the petroleum and natural gas industries.
  • ERW Galvanized Steel Pipe: Galvanized ERW pipes are coated with a layer of zinc to enhance their corrosion resistance, making them suitable for outdoor and marine applications.
  • Pre Galvanized Pipes: Pre-galvanized ERW pipes have a zinc coating applied before the welding process, providing additional protection against rust and corrosion.
  • API 5L X80 Pipe: A specific grade of ERW pipe designed for high-strength applications in the oil and gas industry.
  • K55 PSL1 EN 10255: ERW pipes made from grade K55 steel, compliant with the European standard EN 10255.
  • K55 PSL 1 EN 10219: ERW pipes made from grade K55 steel, conforming to the European standard EN 10219 for structural steel tubes.
  • EN 10217: European standard specification for welded steel tubes for pressure purposes.
  • AS 1074: Australian standard for steel tubes and tubulars for ordinary service.
  • AS NZS 1163:2016: Australian and New Zealand standard for structural steel hollow sections.
  • ASTM A53 PIPE: A widely used standard specification for black and hot-dipped, zinc-coated, welded, and seamless steel pipes, suitable for various applications.
  • BS EN -39 ERW PIPES: British standard for steel tubes used in scaffolding and structural purposes.
  • ASTM A500 PIPE: This specification covers cold-formed welded and seamless carbon steel round, square, rectangular, or special-shaped structural tubing.
  • ASTM A252 PIPE: A standard specification for welded and seamless steel pipe piles, used in foundation construction.
  • ASTM A795 PIPE: This specification covers black and hot-dipped galvanized welded and seamless steel pipe for fire protection use.
How is Steel Pipe Made?

The steel pipe manufacturing process involves several steps, and it can vary depending on the type of pipe being produced (e.g., seamless, ERW, LSAW, etc.). Here’s a general overview of how steel pipes are made:

  1. Steel Production: The process begins with the production of steel. Steel is an alloy primarily composed of iron and carbon, with small amounts of other elements. Iron ore is melted in a blast furnace, and various alloys and elements are added to achieve the desired properties of the steel.
  2. Formation of Steel Billets or Coils: Once the steel is produced, it is shaped into either steel billets (solid square or round bars) or steel coils (continuous long rolls of steel). The choice between billets and coils depends on the type of pipe being manufactured.
  3. Seamless Pipe Manufacturing:
    Piercing: For seamless pipes, solid steel billets are heated to a high temperature and then pierced or punched to create a hollow cylindrical shape. This is known as the “piercing” process.

    Rotary Rolling: The pierced billet is then placed on a rotary rolling mill, where it is rolled and stretched to reduce its diameter and increase its length. This process is called “rotary rolling” or “extrusion.”

  4. ERW Pipe Manufacturing:
    Forming: In the case of Electric Resistance Welding (ERW) pipes, steel coils are first unrolled and passed through a series of rollers to form the flat sheet into a cylindrical shape.

    Welding: The edges of the flat sheet are then heated and fused together using electric resistance welding. This process creates a longitudinal seam along the length of the pipe.


  1. LSAW and SSAW Pipe Manufacturing: For Longitudinal Submerged Arc Welding (LSAW) and Spiral Submerged Arc Welding (SSAW) pipes, the process involves forming steel plates into a cylindrical shape and welding the longitudinal or spiral seams using submerged arc welding.
  1. Heat Treatment (Optional): After the welding process, the pipes may undergo heat treatment to improve their mechanical properties, relieve stress, and achieve the desired microstructure.
  1. Finishing: The pipes are then subjected to various finishing processes, such as straightening, sizing, cutting, and bevelling, to meet specific length and dimensional requirements.
  1. Inspection and Testing: The finished pipes undergo rigorous inspection and testing to ensure they meet the required quality and standards. This includes checks for dimensions, mechanical properties, and non-destructive testing to detect any defects.
  1. Surface Coating (Optional): Depending on the intended use of the pipes, they may undergo surface coating or galvanizing to enhance their corrosion resistance.
  1. Packaging and Transportation: Finally, the pipes are bundled, packaged, and prepared for transportation to their destination, where they will be utilized in various industries and applications.
  2. The specific manufacturing process can vary depending on the type and grade of steel pipes being produced, but the steps outlined above provide a general idea of how steel pipes are made
Steel Pipe Properties

Steel pipes possess a range of properties that make them a preferred choice for various applications. These properties are a result of steel’s unique composition and manufacturing processes. Here are some key properties of steel pipes:

  1. Flexibility: Steel pipes can be manufactured in various shapes and sizes, allowing for customization to suit specific application requirements. They can be bent and shaped without compromising their structural integrity.
  2. Strength: Steel pipes exhibit high tensile strength, allowing them to withstand significant external and internal pressure. This property makes them ideal for applications requiring transportation of fluids and gases over long distances.
  3. Corrosion Resistance: Depending on the specific grade and surface treatment, steel pipes can exhibit excellent corrosion resistance. Coatings like zinc or epoxy protect the steel from environmental elements, making them suitable for outdoor and marine applications.
  4. Non-Combustible: Steel is a non-combustible material, which means it does not support combustion, making it safe for applications in fire-prone environments.
  5. Fire Resistance: Steel pipes have inherent fire-resistant properties, making them a safe choice for applications where fire protection is crucial, such as in building construction and fire sprinkler systems.
  6. Thermal Conductivity: Steel pipes have good thermal conductivity, making them suitable for applications involving the transportation of hot fluids and gases, such as in steam and heating systems.
  7. Malleability: Steel is a malleable material, allowing it to be formed into various shapes during the manufacturing process. This property makes it adaptable to different production techniques, including seamless, ERW, LSAW, and others.
  8. Recyclability: Steel is highly recyclable without losing its original properties. This eco-friendly aspect makes steel pipes a sustainable choice in terms of resource conservation and waste reduction.
  9. Durability: Steel is a durable material, capable of withstanding harsh environmental conditions, including extreme temperatures, corrosion, and mechanical stress. This durability ensures a long service life for steel pipes.
  10. Cost-Effective: Steel pipes offer a cost-effective solution for various applications due to their durability, ease of maintenance, and long lifespan.

These properties collectively contribute to the widespread use of steel pipes in industries such as oil and gas, construction, water supply, plumbing, infrastructure, and more. The versatility and reliability of steel pipes have solidified their position as a critical component in modern society’s infrastructure and development.

Steel Pipes Sizes


Nominal Pipe SizeOutside DiameterSchedule 5 SSchedule 10 SSchedule 20 SSchedule 40 SSchedule 80 SSchedule 160 SXXS




ASTM A 312 TP 304
ASTM A 312 TP 316L
ASTM A 312 TP 317L



What are Steel Pipes used for?

Steel pipes find extensive applications across various industries due to their excellent properties. Some of the key applications of steel pipes are as follows:

  1. Marine Applications: Steel pipes are used in marine environments for offshore drilling operations, shipbuilding, and underwater pipelines.
  2. Water Supply: Steel pipes are commonly used in municipal water supply networks, water treatment plants, and water distribution systems due to their strength, durability, and corrosion resistance.
  3. Construction and Infrastructure: Steel pipes are used in construction for various purposes, including structural support, building frames, scaffolding, and piling for foundation work. They play a crucial role in the construction of buildings, bridges, highways, and other infrastructure projects.
  4. Fire Sprinkler Systems: Steel pipes are a common choice for fire sprinkler systems in buildings due to their fire-resistant properties and ability to withstand high-pressure water flow during emergencies.
  5. Industrial Applications: Steel pipes are used in various industrial processes for the transportation of chemicals, gases, and fluids. They are employed in industries such as petrochemicals, power generation, mining, and manufacturing.
  6. Oil and Gas Industry: Steel pipes are widely used in the oil and gas sector for the transportation of crude oil, natural gas, and refined petroleum products. They are essential for constructing pipelines that connect production sites to refineries and distribution centers.
  7. Plumbing and HVAC Systems: Steel pipes are used in plumbing systems for both residential and commercial buildings. They are also utilized in heating, ventilation, and air conditioning (HVAC) systems to transport hot and cold water or steam.
  8. Structural and Mechanical Applications: Steel pipes are used in various structural and mechanical applications, such as in the manufacturing of handrails, fences, sign poles, and agricultural equipment.
  9. Automotive Industry: Steel pipes are employed in the automotive sector for the manufacturing of exhaust systems, chassis, and other components due to their high strength and formability.
  10. Boiler and Heat Exchanger Tubes: Steel pipes are used in the construction of boilers, heat exchangers, and condensers, where they facilitate the exchange of heat between fluids.
  11. Hydraulic Systems: Steel pipes are used in hydraulic systems for their high-pressure capabilities and ability to withstand hydraulic fluids.
  12. Geothermal Energy: Steel pipes are used in geothermal energy projects to transport geothermal fluids from underground reservoirs to the surface.

The versatility, strength, and durability of steel pipes make them indispensable in various sectors, contributing significantly to the development and functioning of modern industries and infrastructure.

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Market Area

We Supply Steel Pipes in listed cities in India: –

Mumbai, Bengaluru, Chennai, Hyderabad, Kolkata, New Delhi, Pune, Ahmedabad, Jaipur, Surat, Salem, Gandhinagar, Bhiwandi, Tiruppur, Sivakasi, Jamnagar, Thiruvananthapuram, Rajahmundry, Bhubaneswar, Vijaywada, Firozabad, Bokaro Steel City, Rajkot, Bharuch, Panna, Raipur, Cochin, Ludhiana, Panipat, Durgapur, Peenya, Pimpri-Chinchwad, Channapatna, Kharagpur, Nashik, Bareilly, Varanasi, Haldia, Rourkela, Bangalore, Moradabad, Indore, Visakhapatnam, Trivandrum, Pithampur, Dibrugarh, Angul, Gwalior, Coimbatore, Kannur, Nagpur, Vadodara, Rudrapur, Noida, Agra, Bhagalpur, Jamshedpur, Bhilai, Ratnagiri, Kanpur, Thane, Bhopal, Durg-Bhilainagar, Jabalpur, Lucknow, Ghaziabad

Trademark Notice: – Please be advised that this website is for promotional purposes only and some of the names used on our website are trade names and/or trademarks of specific manufacturers, and Dmsons Metal Pvt. Ltd. is not affiliated with any manufacturer(s). We want to clarify that the supplies we provide are made to meet customer specifications from any of the available source(s). The use of trade names or trademarks has been done solely for reference purpose and to help customers identify products consistent with the listed specifications.

Please note that Inconel, Incoloy, and Monel are registered trademarks of the Special Metals Group of Companies, Hastelloy is a registered trademark of Haynes International, 254 SMO is a trademark owned by Outokumpu Stainless, Hardox® is a registered trademark of SSAB, and Sanicro 28 is a registered trademark of Sandvik AB. We do not claim any ownership or association with these trademarks and they are used only for informational purposes.