Bend is a kind of metal pipe joints with ball bearing, is in the united states FMC company transfer of technology digestion, absorption and production of technical innovation on the base of series products, its specifications are 1"-4", the rated working pressure of 25-140 Mpa(3629 psi- 20000psi), can provide the normal temperature, low temperture and sulfurous gas under the condition of using various typeds of elbow and repair kits.
