Design, Manufacture/ Fabrication, Testing, Assembly, Inspection and Delivery of Solenoid operated Diaphragm Valve F. O. R. SAIL, Bokaro Steel Limited, Bokaro, Jharkhand for rebuilding of Coke Oven Battery no. 6in accordance with Technical Specification no. MEC/ S/ E254/ A/ 10/ C1/ 0622 PART- VI for rebuilding of Coke Oven Battery no. 6 at SAIL, Jharkhand.