Haji Iron and Steel Works Tondiarpet, chennai, Tamil Nadu

Threaded Fittings: Threaded fittings are used in low and high pressure systems depending upon material used.These fittings allow quick construction and frequent disassembly and assembly for repairs. Available in Forged steel ASTM A-105 in pressure rating of 3000 and 6000 lbs.   Socketweld Fittings: Socketweld fittings are used in low and high pressure systems. They are used in permanent installations which require leakproof connections. Socketweld fittings have a recess for the pipe to slip into, after which a back weld is applied to hold the pipe in the fittings. These fittings are formed by either upset forging or drop forging method. Available in: Forged Steel - ASTM A-105 pressure rating of 3000 and 6000 lbs..   Buttweld Fittings: Buttweld fittings are made from wrought materials and manufactured in both seamless and welded construction. Welding fittings are preferred when physical strength, leakproof construction, and smooth flow characteristics are desired. These fittings are used for permanent applications.Available in Forged Carbon Steel ASTM A-234 in Schedule 30 through 160.

A  Flange allows two pipes to be mechanically connected together, or a pipe to be mechanically connected to a valve, tee, choke or other piece of equipment. The principle of a flange is to use a mechanical force (exerted by the bolts) to pre - load the gasket sufficiently so that when internal pressure (end cap force) is applied, there is enough contact stress between the flanges and gasket to maintain a seal. The Flange it self needs to be connected to the pipe. This is usually achieved by welding though threaded and other weldless connections also exist.  These are the most common type of flanges used for high-pressure application.It is designed to transfer stresses concentrations of the base of the flanges. These are recognized by their long tapered hub. The hub provides an important reinforcement to the flange itself and acts to reduce rotation of the flange at bolt up. The smooth transition between flange and the hub combinbed with the strength of the butt weld joint, allows the flanges to be used in extreme conditions of cyclic loading, bendng and temperature fluctuations.  

Haji Iron And Steel Works also manufacture fasteners in India since 1986 and is committed to quality and delivery at the best possible prices. Since its establishment, Haji Iron And Steel Works has proactively implemented global strategies to create an internationally integrated business structure.   We manufacture wide range of Washers, ASTM Studs. Foundation Bolts, Threaded Rods, Clamps and other allied items confirming to rigid international standards such as DIN, ASTM BS, ANSI, IS and ISO etc. The application of our products is wide and varied. It is used in building Automobiles, Railway Wagons, Railway Engines, Agricultural Pump set, Electronic equipments setting up of steel Cement, Paper, Chemical, Fertilizer & Petro Chemical Plant construction of Hydel, Thermal Atomic Power station etc.   Today we are well equipped and have almost all the in-house facilities for the manufacture of Fasteners and xylam coating.