Gbm manufacturing pvt ltd is one of the major manufacturers of variety of mechanical power transmission couplings & expansion joints in india. The coupling product range includes gear coupling, pin-bush coupling, resilient coupling, disc coupling, tyre coupling and in expansion joints it includes non-metallic fabric type, multi layer fabric belt, metallic & rubber. For metallic expansion joint the company follow ejma standard. Non-metallic expansion joints are manufactured as per astm standard.These are generally utilised where higher presure ratings are encountered in the duct lines. Our metallic expansion belows are fabricated out of carbon steel/mid steel/stainless steel material depending upon service conditions. These are geenrally designed as per ejma standards. These have been supplied to eminent customers by us under stringent inspection carried out by reputed agencies these are also subjected to stringent quality control checks whereby every joint is inspected for leakage as per recommendations.In special cases dye penetrant and radiographic expamination of weld joints are also conducted. Advantages of non-metallic expansion joints over metallic expansion joints:- large movement capability :total number of expansion joints in a duct work may be reduced for better economy in duct design; ability to accommodate axial, lateral torsional and angular movements : duct system can be greatly simplified,the usage of costly toggles, hangers, supports, structures and guides can be extensively reduced, duct work erection is simplified since too much care not be taken for alignments; negligible spring rates, very low spring forces during movement :duct support structures are simpler and lighter, no reaction force on fixed supports; corrosion-resistant by use of suitable fabric combination: life of joints increase, low material cost compared to corrosion resistant special steels; high - temperature withstanding capability : low material costs compared to high temperature-resistant special metals; vibration isolation and sound dampening properties : prevention of premature system degradation due to vibrations, protection from noise pollution, easy replacement of fabric part in case of any failure, minimum downtime for maintenance.
