口径范围: NPS 1/2""~2""(DN15~DN50）压力等级: ASME CLASS 150~1500（PN16~PN260）主体材料：碳钢, 不锈钢, 合金钢及双相钢连接方式：RF, BW, RTJ,SW,NPT驱动方式：手动、气动、电动和液动
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