论文部分内容阅读
美国德姆科公司研制了一种结构紧凑并能承受高压的C型球阀。这种球阀的壳体是用碳钢锻造的,当工作温度为150℃时,能承受2000磅/吋~2(141公斤/厘
American company Dmco has developed a compact and can withstand high pressure C-type ball valve. This ball valve housing is made of carbon steel forged, when the operating temperature is 150 ℃, can withstand 2,000 pounds / inch ~ 2 (141 kg / PCT