--Metal annular flexible hose --Metal helix flexible hose --Metal expansion joint --Rubber expansion joint --Big valve, flange and tube couplings Our equipment and machinery includes: --Hydraulic annular hose forming machine --Mechanical annular hose forming machine --Helix hose forming machine --braiding machine --Mechanical expansion joint forming machine (top in the world) --Hydraulic expansion joint forming machine --Tube mill --Seam welder --Shear machine