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D、DF、DY、DM型卧式单吸多级离心清水泵

水泵介绍:

D、DF、DY、DM型卧式单吸多级离心清水泵系节段式多级离心泵,采用了国家推荐使用的高效节能水力模型,具有高效节能、性能范围广、运行安全平稳、低噪音、长寿命、安装维修方便等优点。

应用范围:化工、制药、石油、冶金、冶炼、电力、电镀、染料、农药、造纸、食品、纺织、自来水厂、灌溉、排水泵站、工业供水系统、空调系统、消防系统、船舶工业等行业;

流 量Q:3.75-840m3/h,扬 程H:19-680m;

水泵材质:HT200、HT250、QT600、ZG、304、316、316L、317L、904L、CD4-MCu;

常见型号:D(DM,DF,DY)450-60X4;

进口口径:65mm,出口口径:50mm;

工作压力:0.6MPa,工作温度:80℃;

【性能特点】

国家实用新型技术

美国先进水力模型

三元流理论/三维软件设计

制造/加工/铸造/蜗壳

【工作原理】

D、DF、DY、DM型卧式单吸多级离心清水泵通过改变泵的材质、密封形式和增加冷却系统,可输送热水、油类、腐蚀性和含磨料的介质等;

D型泵供输送不含固体颗粒、温度不高于80℃的清水或物理化学性质类似于清水的液体,适应于矿山和城市给排水工程使用;

DM型泵供输送固体颗粒含量不大于1.5%的中性矿水(粒度小于0.5毫米)及类似的其它污水,被输送介质的温度不高于80℃,适于钢铁厂、矿山排水、污水输送等场合;

DF型泵供输送温度为-20℃~105℃,不含固体颗粒,有腐蚀性的液体;

DY型泵用于输送不含固体颗粒,温度为-20℃~150℃,粘度小于120厘沲的油类和石油产品;

以上各型泵的进口允许压力均不超过0.6Mpa。


● D、DF、DY、DM型卧式单吸多级离心清水泵参数范围:

流量:3.75~840m3/h

扬程:19~680m


● D、DF、DY、DM型卧式单吸多级离心清水泵型号说明:

D(DM,DF,DY)450-60X4

D-多级卧式离心泵

DM-多级耐磨离心泵

DF-多级耐腐蚀离心泵

DY-多级离心油泵

450-泵设计点流量为450 m3/h

60-泵单级设计点扬程为60m

4-泵的级数为4


125D25X5

125-泵进口直径为125mm

D-多级离心泵

25-泵单级设计点扬程为25m

5-泵的级数为5


● D、DF、DY、DM型卧式单吸多级离心清水泵结构说明:

D,DM,DF,DY型泵主要由固定部分、转子部分、轴承和轴封四大部分组成:

1,固定部分主要由吸入段、中段、吐出段、和导叶等组成,用穿杠将各段拉紧,构成工作室。D、DM、DF、DY型泵吸入口为水平方向,出口垂直向上;DG型泵出入口均均垂直向上,根据需要也可生产出入口垂直向上方向或出入口水平方向;

2,转子部分主要由轴、叶轮平衡盘轴套等组成。轴将动力传递给叶轮使其工作;平衡盘用来平衡轴向力;轴上装有可更换的轴套以保护轴;

3,轴承部分主要由轴承体、轴承和轴承压盖等组成。除85-67、155-67、600-60型泵采用滑动轴承、稀油润滑外,其余型泵均采用滚动轴承、干油润滑;

4,轴封部分一般采用软填料密封,主要由进水段和尾盖上的密封函体、填料、挡水圈等组成。密封腔内通入有一压力的水,起水封、水冷和水润滑作用。D型泵水封水一般来源于泵内的压力水,DM、DF、DY型泵来源于泵内的压力水或外部供水。DM、DF、DY型泵较多采用机械密封;

传动泵通过弹性联轴器由原动机直接驱动。从原动机端看泵,泵为顺时针方向旋转。


● D、DF、DY、DM型卧式单吸多级离心清水泵选型说明:

1,泵的性能参数见泵的性能表,表中所列参数为一个大气压下常温清水的试验性能,输送油类等粘度大的介质时,需要进行性能换算。

2,订货时需要注明泵的型号、参数、以及输送介质的密度、温度、粘度、腐蚀性等。

3,如实际要求参数与性能表不符,本公司根据要求设计制造。


【核心配件】

(注意:D、DF、DY、DM型卧式单吸多级离心清水泵型号的水泵配件实物图和此图存在外观、大小、尺寸、材质等的区别)

【配件选择】

多种标准的法兰能提供
      1、中国标准GB, HG和德国标准DIN;
      2、美国标准ANSI, ASME;
      3、日本标准JIS;

过流部件材质可供选择
      1、铸钢;2、不锈钢;
      3、铸铁;
      4、铜合金;

密封型式
      1、机械密封(含平衡型单端面、双端面密封);
      2、填料密封;

轴承
      1、根据用户的要求和泵的技术条件,可提供;
      2、滚动和滚动轴承;

多种联轴器形式可供选择
      1、弹性柱销式联轴器;
      2、金属膜片式联轴器;
      3、爪形联轴器;
      4、梅花形联轴器;

底座
      1、铸造型和钢焊接结构任选;
      2、带集液槽的结构可选;
      3、独立底座;
      4、公共底座;

更多参数【性能参数】

泵型号

流量

扬程
m

配套电机

m3/h

m

型号

功率
kw

D(DM,DF,DY)6-25*4

6

100

Y2-132S2-2

7.5

D(DM,DF,DY)6-25*5

125

Y2-132S2-2

7.5

D(DM,DF,DY)6-25*6

150

Y2-160M1-2

11

D(DM,DF,DY)6-25*7

175

Y2-160M1-2

11

D(DM,DF,DY)6-25*8

200

Y2-160M2-2

15

D(DM,DF,DY)6-50*4

6

200

Y2-160L-2

18.5

D(DM,DF,DY)6-50*5

250

Y2-180M-2

22

D(DM,DF,DY)6-50*6

300

Y2-200L1-2

30

D(DM,DF,DY)6-50*7

350

Y2-200L1-2

30

D(DM,DF,DY)6-50*8

400

Y2-200L2-2

37

D(DM,DF,DY)6-80*4

12

320

Y2-180M-2

22

D(DM,DF,DY)6-80*5

400

Y2-200L1-2

30

D(DM,DF,DY)6-80*6

480

Y2-200L2-2

37

D(DM,DF,DY)6-80*7

560

Y2-225M-2

45

D(DM,DF,DY)6-80*8

640

Y2-250M-2

45

D(DM,DF,DY)12-25*4

12

100

Y160M1-2

11

D(DM,DF,DY)12-25*5

125

Y160M1-2

11

D(DM,DF,DY)12-25*6

150

Y160M2-2

15

D(DM,DF,DY)12-25*7

175

Y160M2-2

15

D(DM,DF,DY)12-25*8

200

Y160L-2

18.5

D(DM,DF,DY)12-50*3

12

150

Y160L-2

18.5

D(DM,DF,DY)12-50*4

200

Y180M-2

22

D(DM,DF,DY)12-50*5

250

Y200L1-2

30

D(DM,DF,DY)12-50*6

300

Y200L1-2

30

D(DM,DF,DY)12-50*7

350

Y200L2-2

37

D(DM,DF,DY)12-80*6

12

480

Y250M-2

55

D(DM,DF,DY)12-80*7

560

Y280S-2

75

D(DM,DF,DY)12-80*8

640

Y280S-2

75

D(DM,DF,DY)12-80*9

720

Y280M-2

90

D(DM,DF,DY)12-80*10

800

Y280M-2

90

D(DM,DF,DY)25-30*6

25

180

Y200L1-2

30

D(DM,DF,DY)25-30*7

210

Y200L1-2

30

D(DM,DF,DY)25-30*8

240

Y200L2-2

37

D(DM,DF,DY)25-30*9

270

Y200L2-2

37

D(DM,DF,DY)25-30*10

300

Y225M-2

45

D(DM,DF,DY)25-50*3

25

150

Y180M-2

22

D(DM,DF,DY)25-50*4

200

Y200L1-2

30

D(DM,DF,DY)25-50*5

250

Y200L2-2

37

D(DM,DF,DY)25-50*6

300

Y225M-2

45

D(DM,DF,DY)25-50*7

25

350

Y250M-2

55

D(DM,DF,DY)25-50*8

400

Y2806-2

75

D(DM,DF,DY)25-50*9

450

Y2806-2

75

D(DM,DF,DY)25-50*10

500

Y2806-2

75

D(DM,DF,DY)25-80*5

25

400

Y280S-2

75

D(DM,DF,DY)25-80*6

480

Y280M-2

90

D(DM,DF,DY)25-80*7

560

Y280M-2

90

D(DM,DF,DY)25-80*8

640

Y315S-2

110

D(DM,DF,DY)25-80*9

25

720

Y315M-2

132

D(DM,DF,DY)25-80*10

800

Y315M-2

132

D(DM,DF,DY)25-80*11

880

Y315L1-2

160

D(DM,DF,DY)25-80*12

960

Y315L1-2

160

D(DM,DF,DY)46-30*3

46

90

Y180M-2

22

D(DM,DF,DY)46-30*4

120

Y200L1-2

30

D(DM,DF,DY)46-30*5

150

Y200L2-2

37

D(DM,DF,DY)46-30*6

180

Y200L2-2

37

D(DM,DF,DY)46-30*7

210

Y225M-2

45

D(DM,DF,DY)46-50*3

46

150

Y200L2-2

37

D(DM,DF,DY)46-50*4

200

Y225M-2

45

D(DM,DF,DY)46-50*5

250

Y250M-2

55

D(DM,DF,DY)46-50*6

300

Y280S-2

75

D(DM,DF,DY)46-50*7

350

Y280M-2

90

D(DM,DF,DY)46-50*8

46

400

Y280M-2

90

D(DM,DF,DY)46-50*9

450

Y315S-2

110

D(DM,DF,DY)46-50*10

500

Y315M-2

132

D(DM,DF,DY)46-50*11

550

Y315M-2

132

D(DM,DF,DY)46-50*12

600

Y315M-2

132






D(DM,DF,DY)46-80*3

46

240

Y280S-2

75

D(DM,DF,DY)46-80*4

320

Y280M-2

90

D(DM,DF,DY)46-80*5

400

Y315S-2

110

D(DM,DF,DY)46-80*6

480

Y315L1-2

160

D(DM,DF,DY)46-80*7

560

Y315L1-2

160

D(DM,DF,DY)46-80*8

46

640

Y315l-2

185

D(DM,DF,DY)46-80*9

720

Y315M1-2

220

D(DM,DF,DY)46-80*10

800

Y315M1-2

220

D(DM,DF,DY)46-80*11

880

Y355M2-2

250

D(DM,DF,DY)46-80*12

960

Y355L1-2

280

D(DM,DF,DY)85-45*4

85

180

Y280S-2

75

D(DM,DF,DY)85-45*5

225

Y280M-2

90

D(DM,DF,DY)85-45*6

270

Y315S-2

110

D(DM,DF,DY)85-45*7

85

315

Y315M-2

132

D(DM,DF,DY)85-45*8

360

Y315M-2

132

D(DM,DF,DY)85-45*9

405

Y315L1-2

160

D(DM,DF,DY)85-67*3

85

201

Y280M-2

90

D(DM,DF,DY)85-67*4

268

Y315S-2

110

D(DM,DF,DY)85-67*5

335

Y315M-2

132

D(DM,DF,DY)85-67*6

402

Y315L1-2

160

D(DM,DF,DY)85-67*7

85

469

Y315L-2

185

D(DM,DF,DY)85-67*8

536

Y315M1-2

220

D(DM,DF,DY)85-67*9

60.

Y355M2-2

250

D(DM,DF,DY)85-67*10

670

Y355L1-2

280

D(DM,DF,DY)85-80*5

85

400

Y315L-2

185

D(DM,DF,DY)85-80*6

480

Y315L2-2

200

D(DM,DF,DY)85-80*7

560

Y315M2-2

250

D(DM,DF,DY)85-80*8

85

640

Y315L1-2

280

D(DM,DF,DY)85-80*9

720

Y355L2-2

315

D(DM,DF,DY)85-80*10

800

Y315L1-2

355

D(DM,DF,DY)85-100*3

85

300

Y315M-2

132

D(DM,DF,DY)85-100*4

400

Y315L-2

185

D(DM,DF,DY)85-100*5

500

Y355M1-2

220

D(DM,DF,DY)85-100*6

600

Y355L1-2

280

D(DM,DF,DY)85-100*7

85

700

Y315L2-2

315

D(DM,DF,DY)85-100*8

800

Y3555-2

355

D(DM,DF,DY)85-100*9

900

Y3556-2

400

D(DM,DF,DY)85-100*10

1000

Y4001-2

450

D(DM,DF,DY)120-50*3

120

150

Y280M-2

90

D(DM,DF,DY)120-50*4

200

Y315S-2

110

D(DM,DF,DY)120-50*5

250

Y315M-2

132

D(DM,DF,DY)120-50*6

300

Y315L1-2

160

D(DM,DF,DY)120-50*7

350

Y315L2-2

200

D(DM,DF,DY)120-100*4

120

394

Y355M1-2

220

D(DM,DF,DY)120-100*5

292

Y355M2-2

250

D(DM,DF,DY)120-100*6

591

Y355L2-2

315

D(DM,DF,DY)120-100*7

689

Y3555-2

355

D(DM,DF,DY)120-100*8

788

Y3556-2

400

D(DM,DF,DY)150-30*3

150

90

Y280S-2

75

D(DM,DF,DY)150-30*4

120

Y280M-2

90

D(DM,DF,DY)150-30*5

150

Y315S-2

110

D(DM,DF,DY)150-30*6

180

Y315M-2

132

D(DM,DF,DY)150-30*7

150

210

Y315L1-2

160

D(DM,DF,DY)150-30*8

240

Y315L2-2

200

D(DM,DF,DY)150-30*9

270

Y315L2-2

200

D(DM,DF,DY)150-30*10

300

Y315M1-2

220

D(DM,DF,DY)150-50*3

150

150

Y315S-2

110

D(DM,DF,DY)150-50*4

200

Y315M-2

132

D(DM,DF,DY)150-50*5

250

Y315L1-2

160

D(DM,DF,DY)150-50*6

300

Y315L-2

185

D(DM,DF,DY)150-50*7

150

350

Y355M2-2

250

D(DM,DF,DY)150-50*8

400

Y355L1-2

280

D(DM,DF,DY)150-50*9

450

Y355L2-2

315

D(DM,DF,DY)150-50*10

500

Y3555-2

355

D(DM,DF,DY)150-80*3

150

240

Y315L-2

110

D(DM,DF,DY)150-80*4

320

Y3551-2

132

D(DM,DF,DY)150-80*5

400

Y3553-2

160

D(DM,DF,DY)150-80*6

480

Y3554L-2

185

D(DM,DF,DY)150-80*7

150

560

Y3555-2

250

D(DM,DF,DY)150-80*8

640

Y4001-2

280

D(DM,DF,DY)150-80*9

720

Y4002-2

315

D(DM,DF,DY)150-80*10

800

Y4002-2

355

D(DM,DF,DY)150-100*3

150

300

Y315L2-2

200

D(DM,DF,DY)150-100*4

400

Y315L1-2

280

D(DM,DF,DY)150-100*5

500

Y3555-2

355

D(DM,DF,DY)150-100*6

600

Y4001-2

450

D(DM,DF,DY)150-100*7

150

700

Y4002-2

500

D(DM,DF,DY)150-100*8

800

Y4002-2

630

D(DM,DF,DY)150-100*9

900

Y4004-2

630

D(DM,DF,DY)150-100*10

1000

Y4501-2

710

D(DM,DF,DY)155-30*3

155

90

Y280S-2

75

D(DM,DF,DY)155-30*4

120

Y280M-2

90

D(DM,DF,DY)155-30*5

150

Y315S-2

110

D(DM,DF,DY)155-30*6

180

Y315M-2

132

D(DM,DF,DY)155-30*7

155

210

Y315L1-2

160

D(DM,DF,DY)155-30*8

240

Y315L2-2

200

D(DM,DF,DY)155-30*9

270

Y315L2-2

200

D(DM,DF,DY)155-30*10

300

Y315M1-2

220

D(DM,DF,DY)155-67*3

155

201

Y315M-2

132

D(DM,DF,DY)155-67*4

268

Y315M1-2

185

D(DM,DF,DY)155-67*5

335

Y355M1-2

220

D(DM,DF,DY)155-67*6

402

Y355L1-2

280

D(DM,DF,DY)200-50*3

200

150

Y315M-2

132

D(DM,DF,DY)200-50*4

200

Y315L-2

185

D(DM,DF,DY)200-50*5

250

Y315L2-2

200

D(DM,DF,DY)200-50*6

300

Y355M2-2

250

D(DM,DF,DY)200-50*7

200

350

Y355L1-2

280

D(DM,DF,DY)200-50*8

400

Y355L2-2

315

D(DM,DF,DY)200-50*9

450

Y3555-2

355

D(DM,DF,DY)200-50*10

500

Y3556-2

400

D(DM,DF,DY)200-100*3

200

300

Y315L1-2

280

D(DM,DF,DY)200-100*4

400

Y3555-2

355

D(DM,DF,DY)200-100*5

500

Y4001-2

450

D(DM,DF,DY)200-100*6

600

Y4003-2

560

D(DM,DF,DY)200-100*7

200

700

Y4004-2

630

D(DM,DF,DY)200-100*8

800

Y4501-2

710

D(DM,DF,DY)200-100*9

900

Y4502-2

800

D(DM,DF,DY)200-100*10

1000

Y4503-2

900

D(DM,DF,DY)200-150*3

200

450

Y3556-2

280

D(DM,DF,DY)200-150*4

600

Y4003-2

355

D(DM,DF,DY)200-150*5

750

Y4501-2

450

D(DM,DF,DY)200-150*6

900

Y4503-2

560

D(DM,DF,DY)200-150*7

200

1050

Y4504-2

630

D(DM,DF,DY)200-150*8

120

Y5001-2

710

D(DM,DF,DY)200-150*9

1350

Y5002-2

800

D(DM,DF,DY)200-150*10

1500

Y5003-2

900

D(DM,DF,DY)280-43*3

280

129

Y315L1-4

250

D(DM,DF,DY)280-43*4

172

Y315L2-4

315

D(DM,DF,DY)280-43*5

215

Y355M-4

355

D(DM,DF,DY)280-43*6

258

Y355L1-4

450

D(DM,DF,DY)280-43*7

280

301

Y355L2-4

315

D(DM,DF,DY)280-43*8

344

Y4002-4

355

D(DM,DF,DY)280-43*9

387

Y4003-4

450

D(DM,DF,DY)280-43*10

430

Y4004-4

450

D(DM,DF,DY)280-65*3

280

195

Y3555-4

250

D(DM,DF,DY)280-65*4

260

Y4001-4

315

D(DM,DF,DY)280-65*5

325

Y4003-4

355

D(DM,DF,DY)280-65*6

390

Y4004-4

450

D(DM,DF,DY)280-65*7

280

455

Y4004-4

315

D(DM,DF,DY)280-65*8

520

Y4501-4

355

D(DM,DF,DY)280-65*9

585

Y4503-4

450

D(DM,DF,DY)280-65*10

650

Y4504-4

450

D(DM,DF,DY)280-95*3

280

285

Y355-4

250

D(DM,DF,DY)280-95*4

380

Y4001-4

315

D(DM,DF,DY)280-95*5

475

Y4003-4

355

D(DM,DF,DY)280-95*6

570

Y4501-4

450

D(DM,DF,DY)280-95*7

280

665

Y4502-4

315

D(DM,DF,DY)280-95*8

760

Y4503-4

355

D(DM,DF,DY)280-95*9

855

Y4504-4

450

D(DM,DF,DY)280-95*10

950

Y5001-4

450

D(DM,DF,DY)360-40*3

360

120

Y315L2-4

185

D(DM,DF,DY)360-40*4

160

Y355M2-4

250

D(DM,DF,DY)360-40*5

200

Y355L2-4

315

D(DM,DF,DY)360-40*6

240

Y3556-4

400

D(DM,DF,DY)360-40*7

360

280

Y4002-4

450

D(DM,DF,DY)360-40*8

320

Y4003-4

500

D(DM,DF,DY)360-40*9

360

Y4004-4

560

D(DM,DF,DY)360-40*10

400

Y4501-4

630

D(DM,DF,DY)360-60*4

360

240

Y3556-4

400

D(DM,DF,DY)360-60*5

300

Y4002-4

500

D(DM,DF,DY)360-60*6

360

Y4003-4

560

D(DM,DF,DY)360-60*7

360

420

Y4501-4

710

D(DM,DF,DY)360-60*8

480

Y4502-4

800

D(DM,DF,DY)360-60*9

540

Y4503-4

900

D(DM,DF,DY)360-60*10

600

Y4504-4

1000

D(DM,DF,DY)360-95*3

360

285

Y3556-4

400

D(DM,DF,DY)360-95*4

380

Y4003-4

560

D(DM,DF,DY)360-95*5

475

Y4501-4

710

D(DM,DF,DY)360-95*6

570

Y4503-4

900

D(DM,DF,DY)360-95*7

360

665

Y4504-4

1000

D(DM,DF,DY)360-95*8

760

Y5001-4

1120

D(DM,DF,DY)360-95*9

855

Y5003-4

1400

D(DM,DF,DY)360-95*10

950

Y5007-4

1400

D(DM,DF,DY)450-60*3

450

180

Y4001-4

355

D(DM,DF,DY)450-60*4

240

Y4002-4

400

D(DM,DF,DY)450-60*5

300

Y4004-4

500

D(DM,DF,DY)450-60*6

360

Y4501-4

630

D(DM,DF,DY)450-60*7

450

420

Y4502-4

710

D(DM,DF,DY)450-60*8

480

Y4503-4

800

D(DM,DF,DY)450-60*9

540

Y4504-4

900

D(DM,DF,DY)450-60*10

600

Y5001-4

1000

D(DM,DF,DY)450-95*3

450

285

Y4002-4

500

D(DM,DF,DY)450-95*4

380

Y4501-4

710

D(DM,DF,DY)450-95*5

475

Y4503-4

900

D(DM,DF,DY)450-95*6

570

Y4504-4

1000

D(DM,DF,DY)450-95*7

450

665

Y5002-4

1250

D(DM,DF,DY)450-95*8

760

Y5003-4

1400

D(DM,DF,DY)450-95*9

855

Y5601-4

1600

D(DM,DF,DY)450-95*10

950

Y5602-4

1800

D(DM,DF,DY)500-50*2

500

100

Y355M1-4

220

D(DM,DF,DY)500-50*3

150

Y4001-4

355

D(DM,DF,DY)500-50*4

200

Y4003-4

450

D(DM,DF,DY)500-50*5

250

Y4005-4

560

D(DM,DF,DY)500-50*6

500

300

Y4502-4

710

D(DM,DF,DY)500-50*7

350

Y4503-4

800

D(DM,DF,DY)500-50*8

400

Y4504-4

900

D(DM,DF,DY)500-50*9

450

Y5001-4

1000

D(DM,DF,DY)500-57*3

500

171

Y3555-4

355

D(DM,DF,DY)500-57*4

228

Y4001-4

450

D(DM,DF,DY)500-57*5

285

Y4004-4

630

D(DM,DF,DY)500-57*6

342

Y4501-4

710

D(DM,DF,DY)500-57*7

500

399

Y4502-4

800

D(DM,DF,DY)500-57*8

456

Y4504-4

1000

D(DM,DF,DY)500-57*9

513

Y5001-4

1120

D(DM,DF,DY)500-57*10

570

Y5002-4

1250

D(DM,DF,DY)640-80*3

640

240

Y4502-4

710

D(DM,DF,DY)640-80*4

320

Y4504-4

900

D(DM,DF,DY)640-80*5

400

Y5002-4

1120

D(DM,DF,DY)640-80*6

480

Y5004-4

1400

D(DM,DF,DY)640-80*7

640

560

Y5601-4

1600

D(DM,DF,DY)640-80*8

640

Y5602-4

1800

D(DM,DF,DY)640-80*9

720

Y5603-4

2000

D(DM,DF,DY)640-80*10

800

Y6301-4

2240

D(DM,DF,DY)720-60*3

720

180

Y4005-4

560

D(DM,DF,DY)720-60*4

240

Y4502-4

710

D(DM,DF,DY)720-60*5

300

Y4504-4

900

D(DM,DF,DY)720-60*6

360

Y5002-4

1120

D(DM,DF,DY)720-60*7

720

420

Y5003-4

1250

D(DM,DF,DY)720-60*8

480

Y5004-4

1400

D(DM,DF,DY)720-60*9

540

Y5601-4

1600

D(DM,DF,DY)720-60*10

600

Y5602-4

1800


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福建南平安丰水厂

生产情况: 输送液体:循环冷却水

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