AM/NS India Becomes 1st Steel Company in the World to Produce Highest Strength Welded Pipes Equivalent to API 5L X100
While setting a new benchmark in offshore engineering, this endeavour by ArcelorMittal Nippon Steel India strongly supports the ‘Atmanirbhar Bharat’ and ‘Viksit Bharat’ initiatives by enabling the domestic availability of indigenously produced highest strength welded pipes, replacing seamless pipes currently imported from Europe for critical applications such as oil & gas platforms, offshore wind structures, and deepwater pipelines.
ArcelorMittal Nippon Steel India has already supplied a substantial quantity of welded pipes to a leading oil and gas producer in the country.
Equivalent to the American Petroleum Institute (API) 5L X100Q, EQ70 grade is a high-strength low-alloy steel grade with a minimum yield strength of 690 megapascals (MPa) and exceptional toughness. EQ70 grade welded pipes meet the demanding requirements of offshore applications such as leg bracing in jack-up rigs and deepwater pipelines. Their superior strength allows for thinner, lighter pipes without compromising structural integrity, while their advanced weldability and corrosion resistance ensure reliability in harsh marine environments.
The successful fabrication of welded pipes from ABS EQ70 grade plates using Submerged Arc Welding (SAW) at the company’s flagship plant in Hazira, Gujarat, sets new industry standards for safety, sustainability, and cost-effective production for critical offshore projects. Producing ultra-high strength welded pipes is technically challenging, as it requires maintaining uniform strength and toughness across both the base metal and the welded seam, while ensuring structural integrity under extreme offshore conditions. This innovation advances India’s manufacturing capabilities further up the value chain.
Published on:
27 May 2026
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