当应用涉及腐蚀性介质、高压或高流速时,我们建议将温度计套管与双金属温度计结合使用。完美适用于需要保护的未装甲玻璃液体测试温度计,或其他温度传感元件的最大直径为。25 "。这些#20规格的双金属温度计套管符合或超过SAMA规格,也可提供重型,法兰,承插焊接和Van Stone型号。标准温度计套管由316L SST制成,除2½"插入外,还可步进至1/2 "外径。直柄型号也可提供。标准工艺连接尺寸是1/2"-14 NPT, 3/4"-14 NPT, 1"-11 1/2 NPT,其他尺寸可供选择。结构材料包括316L不锈钢(标准),304不锈钢和黄铜(ASTM B-16)。如果用户要求,可提供不使用时保持热套管内径清洁的帽和链。长度:±1/16',长度12"或以下;±1/8",长度12"或以上井30"及以上:实心钻孔类型将钻通端,塞住,和螺旋电弧焊接; built-up design must be speci-fied beyond 42-1/4" overall length 0D TOLERANCES: Fractional: ±.015; Décimal: ±.005 on .000 place; ±.01 on .00 place BORE ID: +.005; -.003; usually within ±.002 END THICKNESS: Gun drill bottom; 1/4" to bottom ±1/16"; 3/16" minimum end thickness CONCENTRICITY OF BORE TO OD: ±10% of minimum wall thickness WETTED SURFACES FINISH: Standard finish 60-100 Ra; 16-32 Ra available; 4-10 Ra mirror polish available RADIUS UNDER THREADS AND FLANGES: 1/8" is standard, ±1/16".; 1/16" on Van Stone type MALE THREADS (NPT): ±1 tum on thread gage