镀锌管分水卡子/铸铁管变径开口三通工作压力:≤1.6Mpa 8. 整体结构、简单紧凑、造型美观;1、法兰连接尺寸:GB/T1724.1-98 螺栓和螺母由低合金钢制成,带滚压螺纹,双半径头,宽螺栓肩,可防止较大扭矩下螺纹旋转。4、冶金系统、电力系统、石化装置、城市供热系统中的高温介质的管路系统或装置上,可选用金属对金属密封针型阀。]PP管开边快接三通/钢管法兰旁通器
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