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News-The valve industry and the investment direction
The valve industry and the investment direction
双击自动滚屏 发布者:admin 发布时间:2011/11/12 阅读:162062次 【字体:

With the continuous development of science and technology, domestic valve market, but also to the high-tech, high-parameter, strong corrosion resistance, high-life direction. Based on the analysis of valve technology at home and abroad and domestic valve market demand analysis, the various industries in recent years with high-tech valve and valve industry development trend and investment direction, as follows:
      
     
1. Oil, natural gas wellhead valves

     
Oil, natural gas wellhead valve is mainly used to meet U.S. API6A standard single gate or double plate, there is no diversion diversion hole or holes parallel forged steel gate valve, slurry valve, throttle angle (CHOKE valve ), pilot operated safety valve and check valve.

     
The nominal level of the valve API2000psi, 3000psi, 5000psi, 10000psi, 15000psi, 20000psi; nominal diameter of DN46 Engineering ~ 228mm (113/16in ~ 9in); temperature class K (-60 ~ 182 ℃), L ( -42 ~ 182 ℃), P (-29 ~ 182 ℃), R (room temperature), S (-18 ~ 166 ℃), T (-18 ~ 182 ℃), U (-18 ~ 121 ℃), V ( 2 ~ 121 ℃); material requirements for the AA, BB, CC, DD, EE, FF, HH; material properties required by the 36K, 45K, 60K, 75K; product technical requirements by PSL1 (product specification level 1), PSL2 (product conformance level 2), PSL3 (product specification grade 3), PSL4 (product specification grade 4).

     
2. Oil, natural gas long-distance pipeline valve

     
Oil, natural gas long-distance pipeline valves are mainly in line with U.S. API6D standard single gate or double plate, there is no diversion diversion hole or holes parallel forged steel gate valve; forged or cast steel three-body, coat type or all-welded ball valve fixed; oil seal or pressure balanced plug valves; Swing or butterfly valve, ball valve through; pigging valve.

     
The nominal level of the valve CL150 (PN2.0MPa), CL300 (PN5.0MPa), CL400 (PN6.4MPa), CL600 (PN10.0MPa), CL900 (PN15.0MPa), CL1500 (PN25.0MPa), CL2500 (PN42.0MPa); nominal diameter of DN50 ~ 1500mm (2in ~ 60in); technical requirements for fire resistance test according to ISO10497; valve pressure test according to ISO5208.

     
3. Valves for nuclear power

     
Valves for nuclear power than conventional large-scale thermal power station with its technical characteristics and requirements of the valve is higher. Valves generally have gate valve, globe valve, check valve, butterfly valve, safety valve, main steam isolation valves, ball valves, diaphragm valves, pressure reducing valve and control valve; a representative of the highest technical parameters of the valve: maximum diameter DN1200mm (core 3 of the butterfly), DN800mm (core 2 of the main steam isolation valve), DN350mm (nuclear one of the main circuit gate); maximum pressure: about 1,500 pound; maximum temperature: about 350 ℃ ; media: the coolant (water diboride) and so on. Production of nuclear grade valve product requirements: usually by the nuclear industry standards EJ, American ASME, IEEE standards and the French pressurized water reactor nuclear island design and construction rules for mechanical equipment, RCC-M and so on.

     
Nuclear power development with the specific type of valve, the following parameters:

     
⑴ stuffing valve:

     
a hydraulic-driven valve. The valve with its own water pressure push the piston open or close the valve Nominal Diameter: DN350, 400mm; working pressure: PN17.5MPa; Operating temperature: 315 ℃.

     
b fully enclosed electric gate. The valve should be closed using a special screen motor, through immersion in the work of the planetary reduction gear gate for the opening and closing movement. The valve nominal diameter: DN100 ~ 800mm; working pressure: PN2.5 ~ 45.0MPa; Operating temperature: 200 ~ 500 ℃.


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       评论人:hauisas5L  评论时间:2017/9/12
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       评论人:Lorenzo  评论时间:2017/5/28
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       评论人:葱绿茴香5U  评论时间:2016/11/29
        瀼?浩?牳?栢瑴???散挮?散砯穷?桳橧术硤??????し???㈱??????樮杰??卄?∽し???㈱??????樮杰????瀼?????????????????????????????????瀯????????????????瀼?????????????????????????ピ?????????????????????????????????????????????㈱????????????????????ǹ????????????????????瀼?????????????????????瀯????????????瀯??????瀼????????瀯???????????????????????????????????????????????瀼?????????????????????????????????????????????????????????????????????????????????????????瀼?????????????????????????????????????????????????????????????????瀯???????????????????????????????????????????????????????????????????????????瀼????????????????????????????????????????????????????????????????瀼????瀯???????????瀼???????????????????????????????????????????????????????????????????????瀯????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????瀯?????????????????????????????????????????????????????????????????????????㈱?????????????????????????????????????????????????????????????????????????????????????瀼?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????瀼?????????????????????????????????ャ?????????????????????????????????????????????????瀯????????????瀼??????????????????????????????????デ?????????????????????????????????????????????????????瀯??㈱????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????瀯????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????ǹ???????????????????????????????瀼?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????瀯??????????????????????????????????????????????????????????????????????????????????????????????????????????????????㈱????????????????????????????????????????????????????????????????????????瀯???牨晥∽瑨灴?栯畯敳献摹杯慤獹挮浯爯浱???栮浴?????????????????????????愯??愼栠敲?栢瑴??摥?楸摮橥祩?潣?獳獹???瑨汭???????????????????????????牨晥∽瑨灴?洯汩眮楥畴档湩?敮?穹獬???瑨汭??????????????????????????

       评论人:我是Mz8i82  评论时间:2016/6/22
        

    养生吃什么好 养生先护心

    1. 夏天吃什么好

    护心食物


    夏天养心安神之品有茯苓、麦冬、小枣、莲子、百合、竹叶、柏子仁等,这些都能起到养心安神的作用。

    在方面,应多吃小米、玉米、豆类、鱼类、洋葱、土豆、冬瓜、苦瓜、芹菜、芦笋、南瓜、香蕉、苹果等,少吃动物内脏、鸡蛋黄、肥肉、鱼子、虾等,少吃过咸的食物,如咸鱼、咸菜等。


       评论人:jgosresxhs  评论时间:2016/5/9
        中村 昌 jgosresxhs jgosresxhs

       评论人:Bubby  评论时间:2016/4/16
        Deep thought! Thanks for cobiniruttng.

       评论人:zulyaffd  评论时间:2015/8/11
        qmruiqmq

       评论人:WilbertSak  评论时间:2015/6/19
        will write a big post later - too much work right now :-)

       评论人:fgzsiyli  评论时间:2015/5/19
        mngzus

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