supply of chemical hose pipe as per is:7654 :1987, nominal bore 25mm, length:10mm () chemical hose pipe as per is:7654 :1987, nominal bore 50mm, length:10mm () chemical hose pipe as per is:7654 :1987, nominal bore 25mm, length:20mm () chemical hose pipe as per is:7654 :1987, nominal bore 50mm, length:20mm () chemical hose pipe as per is:7654 :1987, nominal bore 25mm, length:30mm () chemical hose pipe as per is:7654 :1987, nominal bore 50mm, length:30mm ()
