The packer and telescopic tube are designed to a whole body and V-shaped inflatable graphite sealing ring is used to form the sealing system, ensuring the sealing performance of.
它将封隔器与伸缩管设计成一体，采用V形膨胀石墨密封圈组成密封系统，确保伸缩管热力伸长时封隔器的密封性。
The carbon graphite material prepared by the means of improving the oxidation resistance of the basic body materials and impregnated with phosphates had better oxidation resistance.
采用改善炭石墨基体材料抗氧化性能和浸渍磷酸无机高分子复合盐的内外结合的方法，制备的石墨材料具有较好的抗氧化性能。
According to the maximum pressure to bear, pump body and cover can be made of grey cast iron (1.6mpa), spheroidal graphite cast iron (2.0mpa) or cast steel (2.5mpa, including stainless steel).
根据泵承受的最大压力，泵体和泵盖材质采用灰口铸铁(1.6Mpa)、球墨铸铁(2.0 mpa)、铸钢(2.5 Mpa，包括不锈钢)。
According to the maximum pressure to bear, pump body and cover can be made of grey cast iron (1.6mpa), spheroidal graphite cast iron (2.0mpa) or cast steel (2.5mpa, including stainless steel).
根据泵承受的最大压力，泵体和泵盖材质采用灰口铸铁(1.6Mpa)、球墨铸铁(2.0 mpa)、铸钢(2.5 Mpa，包括不锈钢)。
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