原装进口LORENZ传感器DR-50N-S12厂家报价

不锈钢齿轮泵的泵体与两侧端盖为直接接触的硬密封，若接触面的平面度达不到规定要求，则泵在工作时容易吸入空气；同样，泵的端盖与压盖之间也为直接接触，空气也容易侵入；若压盖为塑料制品，由于其损坏或因温度不锈钢齿轮泵的泵体与两侧端盖为直接接触的硬密封，若接触面的平面度达不到规定要求，则泵在工作时容易吸入空气；同样，泵的端盖与压盖之间也为直接接触，空气也容易侵入；若压盖为塑料制品，由于其损坏或因温度变化而变形，也会使密封不严而进入空气。 
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Eaton Moeller 170M4834
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BEI编码器PHM912-1312-004（PHM9_12//PSSG//13B12D5//S6R// S/N.201602291948/5） 
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ATOS DLOH-3C-U 24DC 油压传动阀
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PRUDHOMME PCR 10B 20 A 齿轮
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原装进口LORENZ传感器DR-50N-S12厂家报价

不锈钢厚壁管的石油精炼装置中不锈钢使用大致存在以下问题应力腐蚀破裂，穿晶破裂(以氯化物为主)，晶间应力腐蚀破裂(以硫化物为主)。点蚀，晶间腐蚀，环烷酸嘴蚀，渗碳脆化。根据石油精炼装置不同腐蚀情况选用不锈钢厚壁管的材料也不同。如高温硫化物系统考虑Al和Cr的抗硫腐蚀及高温强度，使用Cr5-Mo以上的材料；高温H2S-H2系统使用13Cr-Al，18-8Ni钢；环烷酸系统，低流速情况下选用Cr17Ni14Mo2即可，高流速情况需进一步研究；低温CO2腐蚀系统，一般在2℃左右可使用Cr18Ni1；制H2装置中改质炉反应管、高温钢管以及各种加热炉铃的吊架、支架可选用25Cr-2Ni，Incone合金8等。 

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UNIVER CL-122V
Eaton Moeller 255220 NWS-KW/AN/19/2HE
STROMAG 262267/265564
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IGUS SET固定式接头 E4.560.46.2.12
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FINDER继电器553290240094 
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SELET传感器B06G6,51PO 
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英国ONDRIVES变速箱和减速器UPSGS2.0-42H 
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DOLD安全继电器14266 ZWS  8SL  680 OHM  8W DC75V 
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OMRON CS1W-NC133
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FINDER继电器434170245301 
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DOLD安全继电器10524  IK8800.02 AC50HZ 240V 
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小强工控 CARLO GAVAZZI PS21L-MT20L3-H00
原装进口LORENZ传感器DR-50N-S12厂家报价

内侧少焊后，用户在外观上不易看出来，但设备的可靠性下降。未焊的内侧将形成夹缝，釜内物料容易渗入，又难以清洗，渗入物的成份通常不定，既可能长期滞留夹缝深层腐蚀设备，脱落后又可能污染产品。反应釜内壁和釜内部件不抛光，釜内壁粗糙，易生锈、结垢，使用初期或置换产品时清洗困难。混淆全容积和公称容积概念，通常设备的全容积是反应釜筒体和上下封头包含的所有空间，而公称容积仅仅是釜体夹套对应的体积，也就是可投料的体积。#为ER（夹带排除）区，采用解析的产品将树脂间隙内的水顶出，以保证解析时产品的浓度不被稀释。~19为解析区域产品在19#位得到收集。~13#为解析水洗区，其流出液还含有大量未被利用的解析溶剂和洗涤下来的产品，为了提供溶剂的利用效率及提高产品收率，洗涤水同15#流出液混合后进入二级解析区域。~12#为再生区域，采用的再生剂根据树脂的型号来决定，本工艺中主要采用酸碱再生。由于每个柱都能得到充分的利用，可保证每个进入下一区域的柱都能达到优化状态，可使得产品与杂质完全分离，产品的质量得到提高；解析时产品得到完全的解析，并通过ER（夹带排除）区保证解析产品的浓度，有利于后工序的浓缩。 

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小强工控 CARLO GAVAZZI PS21S-AT0205-Y00
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原装进口LORENZ传感器DR-50N-S12厂家报价

众所周知，屋顶通风机在生产中具有很大的作用，那么屋顶通风机应该怎样选用呢？下面让我们一起来了解吧。屋顶通风机选用控制参数为风机型式、材质、风量、全压、效率、噪声和电机功率等。根据被输送气体的物理、化学性质，选择不同用途的通风机。通风机选型时，应考虑管路系统的漏风损失、计算误差，以及通风机实际风量、风压的负偏差，一般采用风量为1.5～1.1，风压为1.1～1.15的安全系数。但也不采用过大，以防止通风机长期处在低效率区运行。注意管网阻力特性与通风机特性的匹配关系。为使通风机能稳定运行，应使通风机在其率点附近工作,通风机的工作点位于性能曲线中全压峰值点的右侧（即大风量侧，且一般位于全压峰值的8%）。对有消声要求的通风系统，应首先选择效率高、叶轮圆周速度低的通风机，且使其在率点附近工作。屋顶通风机从原理上看，它有轴流式、离心式和混流式三类。由于其设于屋顶，不占用任何室内空间是其主要的优点。