... inside of hose is high abrasion resistant. 2. Integrated hose end and inner wall harden, prolong work life. 3.Hose ... be galvanized. Name Concrete rubber hose –delivery hose and end hose Size 2”/2.5”/3”/3.5’’/4’’/4. ... to 380 bar Service Life 20,000 cubic meter Hose End Galvanized, inner wall harden Application Schwing, Putzmeister, kyokuto, Jacon, Sany ...