Steel Hollow Sections Dealers in Delhi

The use of steel tubular sections provides for strong, light and profitable structures and as a result offer a host of possibilities in terms of application (expressive capacity). The use of these products also facilitates designs with a greater aesthetic appeal.

The company is chiefly engaged in the manufacturing, exporting, and supplying of the highest grade Hollow Steel Sections all across the globe. Our Hollow Steel Sections are provided with anti-rust oil coating from inside and outside for ensuring their safe delivery. The wide range of Hollow Steel Sections is offered by us as per IS: 4923 standards and client’s specification, at affordable prices. We Offer Square Hollow Sections (SHS)Rectangular Hollow Sections (RHS)Round Hollow SectionsMild Steel Black ERW Square TubesRectangular TubesRound Hollow Section TubesHot Rolled Steel Sections Applications Oil & GasSugarMetallurgicalPharmaceuticalPulp and paperChemicalBoilersRailway CoachesFertilizerDairy & Food ProductsInstrumentationShipAutomobileHeat exchanger Manufacturing Process Step – 1 Purchasing Raw Material (Steel/Skelp) Material received from SAIL / ESSAR Steel Ltd. / Lloyds / ISPAT or other any approved vendor. The steel shall be fully conformed to the API 5L / IS Standard Specification or as per Customer’s Specification. Testing/ Checking and Identification of Raw material shall be done as per API 5L / IS Standard SpecificationStep – 2 Edge Preparation & Milling Edges of Coil / Skelp are form in edge breaking unit at initial stage so that perfect forming is achieved at welding area. Strip edges are given mill cut on both sides with edge milling machine to make the edges clean and square for perfect butt welding with high frequency. It shall be done before passing the strip to forming process.Step – 3 Forming of Pipe Strip is passed in number of horizontal rolls after edge breaking and form cages supported by vertical rolls to receive an open edge round tube before welding. At the final stage of forming, rolls are provided with guide fins to have a proper proportionate gap and correct entry in welding roll.Step – 4 High Frequency Welding Finally the pipe shape performed after forming process, it passed through welding heads followed by the seam guide. The process of welding is based on ERW process. Electric welding shall be performed with a minimum welder frequency of 200 KHz. The fusion takes place through a roll assembly set for proper welding. Bead trimming shall be done as per API 5L / IS Standard or as per Customer Specification.Step – 5 Seam Normalizing Normalizing is carried out on weld and HAZ after welding at the temperature of 8500 C to 9000 C. The temperature of seam normalizing is monitored by a non contact indicator having the digital display along with recorder. Equipment: Seam Normalizer Capacity : 500 KWStep – 6 Sizing A set of sizing roll is ahead of cooling zone, water cooled pipe is passed through sizing rolls which control the Ovality and required dimensions, which is finally verified with measuring instruments as specified in relevant Specification.Step – 7 NDT Testing (Eddy Current) Eddy current testing is the process of inducing small electrical currents in an electrically conductive article and observing the resultant reaction between the magnetic fields involved. Equipment: Eddy Current Flaw Detector (PC based).Step – 8 Finishing of the Pipes Finished pipe are cut to required length by cut of carriage. Thereafter both ends of pipes are beveled by the end facer. Finally each pipe are checked for its Outer diameter, Inner Diameter, Thickness, Straightness, and length.Step – 9 Hydro Testing After completing all the above process, all pipes transferred to the hydro testing bench. The test pressure shall be given to the pipes as per relevant specification or as per Customer Requirement.Step – 10 Galvanizing Process Hydro Test passed pipes are send for Hot Dip Galvanizing confirming to various Indian Standard / International Standard.Step – 11 Marking Marking on the pipes shall be paint stenciled as stipulated in API 5L/ IS Standard or as per the customer’s requirement, on each length of the pipe

rectangular hollow sections & circular hollow sections in MS, ERW and black steel profiles. Our hollow sections come with anti rust oil coating from inside and outside to ensure durability and long service life. These square & rectangular hollow sections are available in different sizes (mm), wall thickness (mm), weight (Kgm) and grades with dimensional tolerances as per international quality standards. With high torsional rigidity and compressive strength, these hollow sections are comparably more efficient than conventional steel sections. The excellent distribution of material around the axis of the square and rectangular steel hollow sections allows for remarkable strength qualities and thus offers decisive advantages in its applications. The smooth and uniform profile of the sections minimizes corrosion and facilitates easy, onsite fabrication to significantly enhance the aesthetics of structures. A higher strength to weight ratio credits these sections with nearly 20% reduction in the use of steel.

• Application: Constructional