STU单向节流阀|STU单向节流阀厂家|上海STU单向节流阀STU型单向节流阀型号CLHDEF※GMNSTU0400G1/4NPT1/473723220M20×15277STU0600G3/8NPT3/882803225M25×1.59317STU0800G1/2NPT1/298924530M30×1.5936.59STU1200G3/4NPT3/41121004540M35×1.5104211STU1600G1NPT11421224545M40×1.5125115技术参数型号STU0400STU0600STU0800STU1200STU1600***高压力4040404032***大流量12305085150)