... Pipe coupling,pipe clamp fittings,flexible coupling 1:we can supply: NameCoupling, elbow, tee, cross, reducer, cap, mechanical tee, mechanical ... of fire protection,mines,power,chemical industry and urban water supply and discharge.When it is connected with pumps,valves ... the grooved end mechanical piping system – a system of ductile iron and carbon steel couplings, valves and accessories that’s safer ...