Proving Ring are used for load measurements and are used in outfits of a number of Soil & Cement & Bitumen Testing Equipments like Direct Shear Test Apparatus,  CBR Test, unconfined compression test, marshall test etc. High Sensitivity Proving Rings, integral, made of special steel, carefully forged to give maximum strength & machined to give the highest sensitivities commensurate with high stability and to ensure long life and accuracy.

NANJING T- BOTA SCIETECH INSTRUMENT& EQUIPMENT CO., LTD
     Established in year 2008 as one professional pavement equipment supplier, TBT dedicates to porvide testing equipment forengineering project and laboratory use. Our proudcts includes asphalt testing equipment, concrete testing equipment, cement testing equipment, mental testing equipment, non-mental tesing equipment, soil testing equipment and universal testing equipment, etc. We can provide complete set of testing equipment for your engineering projects such as highway, railway, cement factory, bridge and building.
     TBT company is a global supplier and has built its business worldwide. Since its inception, TBT has continued to enhance its products, services and all relevant business activities. After more than a decade of development, we have established complete product supply chain. Every year, we will dispatch professional technical teams to visit the supply chain of each our product to ensure its quality and cost performance. If we find the product has any quality issues, we will terminate the cooperation with the manufacturer.
     Due to our strictly control of the supply chain, our products are always the combinations of quality and economy. Our products have been sold to many countries and regions including Southeast Asia, Middle East, Africa, Europe and America, etc. Recent years, the importance of road, pavement and highway safety get high awareness in China and all other countries. Testing for raw material of pavement, inspection& maintenance of road, pavement and highway will help improve the lifetime of roads and pavement, meanwhile prevent accident; TBT nowadays is working hard on these fields to make contribution on this aspect.

1. How long is the delivery time?
Normally goods will be shipped out within 7-10days after contract signed and down payment received.