Dunshan builds better press fittings for the world, Decades of experience in manufacturing press fittings stainless steel, All Dunshan press fittings are manufactured by our modern flexible and advanced mechanical equipment that makes fittings have precise dimensions and tolerances. Dunshan press fittings made of annealed pipe stainless steel that makes bending easier, and you have a larger flaring, This process makes the fittings smoother and without the risk of injury. the smooth fitting ensures an excellent fit of the O-ring and pipe