Page 12 - HeavyMetal

Unit - 3

Hot & Cold Carbon, Alloy & Stainless Steel Plant

HMT HFS Unit has been commenced and commissioned with state-of-the-art manufacturing
process of cross roll piercing, accu roiling, SRM technology In Dec 2011 and produces various
carbon, alloy and stainless steel grades of seamless tubular products. Cross roll piercing
process begins with piercing of a hot round bar cut piece on the piercer, followed by accu roll
for precision dimensional control of intermediate product, hollow cylindrical shell. Finally, the
dimensions are controlled within specified variations on the stretch reducing miII (SRM). This
process ensures better control over wall thickness variations as compared to other
manufacturing process.

HMT manufactures specialized tubes for various mechanical applications in Boilers and Boiler
components, Economizers, Heat Exchangers and pipes used for cryogenic applications. These
items can be customized to the requirement of individual customers in terms of heat treatment
end end finishes.

HMT has introduced 4 pilger mill and 2 heavy duty draw bench in Unit 3 with annual production
capacity of 12000MT p.a. to manufacture mechanical, hydraulic, boiler tubes, etc. This
multistep forming process guarantees high quality seamless tubes. This process greatly
improves materials grain structure & due to multi step reduction process from larger diameter
tube to smaller diameter tube yields excellent outside & inside surface and closed eccentricity
quality tubes.