Seamless pipes are manufactured without any weld joint, making them highly durable and ideal for high-pressure and high-temperature applications. They are widely used in industries such as oil and gas, power generation, and chemical processing. These pipes ensure uniform strength and reduce the risk of failure. Common grades include ASTM A106 and API 5L. Standards applicable in India include IS 1239 and IS 1978.

Welded pipes are formed by rolling steel strips into a cylindrical shape and welding the edges. They are cost-effective and used in medium to low-pressure applications. Applications include construction, water pipelines, and structural projects. Grades such as ASTM A53 and API 5L are common, adhering to standards like IS 3589 and IS 1239.

Galvanized steel pipes have a zinc coating that resists rust and corrosion, making them suitable for water supply systems and outdoor environments. They are used in plumbing, fencing, and irrigation systems. Common grades include ASTM A53, with Indian standards like IS 1239 governing their quality.

Stainless steel pipes offer exceptional corrosion resistance, making them ideal for hygienic and durable applications in food processing, pharmaceuticals, and marine industries. Popular grades include 304 and 316 stainless steel, meeting standards like ASTM A312 and IS 6913 in India.

Alloy steel pipes are made with elements like chromium and molybdenum to enhance strength and resistance to heat and corrosion. They are used in power plants, refineries, and automotive industries. Grades such as ASTM A335 are common, adhering to high-performance standards like IS 1239 and API 5L.

Carbon steel pipes are known for their strength, durability, and affordability, used in construction, energy transportation, and water distribution. Grades such as ASTM A53 and A106 are prevalent, conforming to standards like IS 1239 and IS 3589 in India.