電廠鋼廠化工數(shù)控機床SGMPH-02B1A2B伺服馬達
電廠鋼廠化工數(shù)控機床SGMPH-02B1A2B伺服馬達
MDF60A0022-2A3-4-0T 08273650
MDF60A0037-2A3-4-0T 08273669
MDF60A0055-2A3-4-0T 08273677
MDF60A0075-2A3-4-0T 08273685
MDF60A0110-203-4-0T 08273693
MDF60A0150-203-4-0T 08273707
MDF60A0220-203-4-0T 08273715
MDF60A0300-203-4-0T 08273723
MDF60A0015-5A3-4-00 08264643
MDF60A0022-5A3-4-00 08264651
MDF60A0030-5A3-4-00 0826466X
MDF60A0040-5A3-4-00 08264678
MDF60A0055-5A3-4-00 08264686
MDF60A0075-5A3-4-00 08264708
MDF60A0110-5A3-4-00 08264724
MDF60A0150-503-4-00 08264740
MDF60A0220-503-4-00 08264767
MDF60A0370-503-4-00 08264775
MDF60A0450-503-4-00 08264783
MDF60A0550-503-4-00 08264791
MDF60A0750-503-4-00 08264805
MDF60A0900-503-4-00 08277095
MDF60A1100-503-4-00 08277109
MDF60A1320-503-4-00 08277117
MDF60A0015-5A3-4-0T 08273227
Allen-Bradley 700-HC14Z24 Series C Relay 3A 24VDC 50/60HZ 14-Pin ! WOW !
ALLEN-BRADLEY 193-BSB 16 SERIES B 1.0-1.6A OVERLOAD RELAY - USED -FREE SHIPPING
ALLEN BRADLEY 700-HLS1Z2-4 GP TERMINAL BLOCK RELAY USIP
ALLEN-BRADLEY 1492-SP1D400 CIRCUIT BREAKER 1/pkg 40A MINIATURE
Allen-Bradley Terminal Block End Anchor 1492-EAH35 (Lot of 5)
NEW LISTINGALLEN BRADLEY SP-192704 / SP192704 (Surplus New In Box)
ALLEN BRADLEY 500-TO*93 SERIES D 120V COIL CONTACTOR
NEW FACTORY SEALED ALLEN BRADLEY/PHOTOSWITCH 61-5550 FIBER OPTIC ADAPTOR KIT
Allen-Bradley 2090-XNSM-T Drive to Drive Terminating Header ! WOW !
NEW ALLEN BRADLEY 800T-QTH24A PILOT LIGHT SER. T 800TQTH24A
Allen-Bradley 193-CPM1 Base for Separate Mounting NEW
ALLEN-BRADLEY 1492-IFM40F-3 SER A HIGH-DENSITY BREAKOUT MODULE - FREE SHIPPING
Allen-Bradley 1781-OA5S One Year Warranty !
ALLEN BRADLEY DRIVE OPERATOR CONTROL KEYPAD DISPLAY 120712 120774
Allen-Bradley 800T-D2A Push Button Black Mushroom Head 1NO 1NC ! WOW !
Allen-Bradley Overload Relay 120-600V 42185-800-01 !WOW
Allen-Bradley Overload Relay 120-600V 42185-800-01 !WOW
ALLEN-BRADLEY GREEN PILOT LIGHT 800H-PR16G.
Allen Bradley -599-P01A -Power Pole Kit 1 N.O. Contact Size 0
ALLEN BRADLEY 1492-GH008 CIRCUIT BREAKER SER B AC 250V 50/60 HZ
NEW ALLEN BRADLEY 800T-NX1330 PUSH BUTTON
ALLEN BRADLEY 700-F400A* U 10A 600V 4 CoilNOT INCLUDEDV USED
ALLEN BRADLEY 700-F220A* U 10A 600V 4 CoilNOT INCLUDEDV USED
ALLEN BRADLEY 800E-2X01V LATCH MOUNT CONTACT BLOCK USIP
ALLEN BRADLEY SP-140584 / SP140584 (NEW IN BOX)
ALLEN BRADLEY 140147 / 140147 (NEW IN BOX)
Allen-Bradley 193-EA1DB SER B Used Gray Overload Relay
ALLEN BRADLEY X402027 FUSE NEW
超高響應功率電機SGMSH-40A2A6D
超高響應功率電機SGMSH-40A2A6E
超高響應功率電機SGMSH-40A2A6S
超高響應功率電機SGMSH-40ACA21
超高響應功率電機SGMSH-40ACA2B
超高響應功率電機SGMSH-40ACA2C
超高響應功率電機SGMSH-40ACA2D
超高響應功率電機SGMSH-40ACA2E
超高響應功率電機SGMSH-40ACA2S
超高響應功率電機SGMSH-40ACA31
超高響應功率電機SGMSH-40ACA3B
超高響應功率電機SGMSH-40ACA3C
超高響應功率電機SGMSH-40ACA3D
超高響應功率電機SGMSH-40ACA3E
超高響應功率電機SGMSH-40ACA3S
超高響應功率電機SGMSH-40ACA61
超高響應功率電機SGMSH-40ACA6B
超高響應功率電機SGMSH-40ACA6C
超高響應功率電機SGMSH-40ACA6D
超高響應功率電機SGMSH-40ACA6E
超高響應功率電機SGMSH-40ACA6S
超高響應功率電機SGMSH-50A2A21
超高響應功率電機SGMSH-50A2A2B
超高響應功率電機SGMSH-50A2A2C
超高響應功率電機SGMSH-50A2A2D
超高響應功率電機SGMSH-50A2A2E
超高響應功率電機SGMSH-50A2A2S
MDF60A0022-2A3-4-0T 08273650
MDF60A0037-2A3-4-0T 08273669
MDF60A0055-2A3-4-0T 08273677
MDF60A0075-2A3-4-0T 08273685
MDF60A0110-203-4-0T 08273693
MDF60A0150-203-4-0T 08273707
MDF60A0220-203-4-0T 08273715
MDF60A0300-203-4-0T 08273723
MDF60A0015-5A3-4-00 08264643
MDF60A0022-5A3-4-00 08264651
MDF60A0030-5A3-4-00 0826466X
MDF60A0040-5A3-4-00 08264678
MDF60A0055-5A3-4-00 08264686
MDF60A0075-5A3-4-00 08264708
MDF60A0110-5A3-4-00 08264724
MDF60A0150-503-4-00 08264740
MDF60A0220-503-4-00 08264767
MDF60A0370-503-4-00 08264775
MDF60A0450-503-4-00 08264783
MDF60A0550-503-4-00 08264791
MDF60A0750-503-4-00 08264805
MDF60A0900-503-4-00 08277095
MDF60A1100-503-4-00 08277109
MDF60A1320-503-4-00 08277117
MDF60A0015-5A3-4-0T 08273227
聯(lián)系人：小葉
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公司名稱：福建鴻飛達自動化科技有限公司
公司地址：福州市閩侯高新區(qū)正榮財富中心（SOHOB座8層)
您心動了嗎？還不趕緊拿起電話撥打我們的熱線！
不同材質(zhì)管道的摩擦損失及局部損失均不同，同一材質(zhì)（尤其是鋼、鑄鐵管）由于內(nèi)壁表面腐蝕、結(jié)垢等因素，沿程水頭損失增加，摩擦阻力隨年限的增加而大大增加，過水斷面流量則隨之逐步減少。對襯管前后水阻及流量變化進行計算如下：水力坡降達西—威斯巴赤公式：i=λv2/2gDi——水力坡降v——平均流速（m/s)λ——摩阻系數(shù)g——（m/s2)D——管內(nèi)徑（m)λ=.11(K/d+68/Re).25K——管內(nèi)壁粗糙度（mm)聚乙烯管取K=.11mm；球墨鑄鐵管新管取K=.6mm；鑄鐵管道運行2年后K值將增大到5~1倍（本次計取中取6倍），聚乙烯管由于無腐蝕，其K值不隨時間變化而變化。
