詳細(xì)介紹
美標(biāo)底溫碳鋼法蘭閘閥
☆采用多種配管法蘭標(biāo)準(zhǔn)及密封面型式,適用于各種工程需要。
美標(biāo)低溫閘閥 適用標(biāo)準(zhǔn)
鋼制閘閥,API600/API 6D
鋼制閘閥,ISO 10434/ISO 14313
溫度和壓力,ASME B16.34
結(jié)構(gòu)長(zhǎng)度,ASME B 16.10
端法蘭, ASME B 16.5
對(duì)焊端,ASME B 16.25
試驗(yàn)標(biāo)準(zhǔn),API 598/API 6
國(guó)標(biāo)低溫閘閥設(shè)計(jì)說(shuō)明
栓接閥蓋
全通型
明桿
剛性或彈性閘板
可更換閥座
鍛造T型頭閥桿
升降式或非升降式手輪
法蘭或?qū)付?br />可安裝傘
DZ41H低溫閘閥標(biāo)準(zhǔn)材料規(guī)范
NO. | Part Name | ASTM Material | |||||||
Carbon steel | 2.5Ni | 3.5Ni | 304 Type | 316Type | 304L Type | 316LType | 20 Alloy | ||
1 | Body | A352LCB | A352LC2 | A352 LC3 | A351 CF8 | A351CF8M | A351CF3 | A351CF3M | A351 CN7M |
2 | Bonnet | A352LCB | A352LC2 | A352 LC3 | A351 CF8 | A351CF8M | A351CF3 | A351CF3M | A351 CN7M |
3 | Wedge | LCB+304 "1 | LCB+304 "1 | LCB+304 "1 | A351 CF8 | A351CF8M | A351CF3 | A351CF3M | A351 CN7M |
4 | Stem | A182 F304 | A182 F304 | A182 F304 | A182 F304 | A182 F316 | A182 F304L | A182 F316L | 20-Alloy |
5 | Seat Ring | A182+F304 "1 | A182+F304*1 | A182+F304*1 | NA | NA | |||
6 | Back Seat | A276 304 | A276 304 | A276 304 | NA | NA | |||
7A | Bonnet Gasket | 304+ graphite | 304+ graphite | 304+ graphite | 304+ graphite | 316+ graphite | 304L+ graphite | 316L+ graphite | 316+ graphite |
7B | Ring Gasket | Soft steel | A182 F304 | A182 F304 | A182 F304 | A182 F316 | A182 F304L | A182 F316L | 20-Alloy |
8 | Bonnet Bolt | A193 L7 | A193 L7 | A193 L7 | A193 B8 | A193 | A193 B8 | A193 B8M | A193 B8M |
9 | Bonnet Nut | A194 4 | A194 4 | A194 4 | A19 4 8 | A194 8M | A194 8 | A194 8M | A194 8M |
10 | Packing | Graphite | Graphite | Graphite | Graphite *2 | Graphite *2 | Graphite *2 | Graphite *2 | Graphite *2 |
11 | Gland | A276 410 | A276 410 | A276 410 | A276 304 | A276 316 | A276 304L | A276 316L | 20-Alloy |
12 | Gland Flange | A352LCB | A352LC2 | A352 LC3 | A351 CF8 | A351 CF8 | A351 CF8 | A351 CF8 | A351 CF8 |
13 | Eyebolt | A193 L7 | A193 L7 | A193 L7 | A193 B8 | A193 B8 | A193 B8 | A193 B8 | A193 B8 |
14 | Eyebolt Nut | A194 4 | A194 4 | A194 4 | A194 8 | A194 8 | A194 8 | A194 8 | A194 8 |
15 | Eyebolt Pin | A276 410 | A276 410 | A276 410 | A276 304 | A276 304 | A276 304 | A276 304 | A276 304 |
16 | Greas Fitting | Commercial | Commercial | Commercial | Commercial | Commercial | |||
17 | stem Nut | Bronze | Bronze | Bronze | Bronze | Bronze | |||
18 | Jam Nut | Carbon steel | Carbon steel | Carbon steel | Stainless steel | Stainless steel | |||
19 | Hand Wheel | Malleable iron | Malleable iron | Malleable iron | Malleable iron | Malleable iron | |||
20 | Wheel Nut | Carbon steel | Carbon steel | Carbon steel | Carbon steel+Zn | Carbon steel+Zn | |||
*1 | PN≥600 CLASS seal face will be HF | ||||||||
*2 | PTFE Optional | ||||||||
*3 | Ductile Ni-Resist iron Optional | ||||||||
NA | Integral with vessell |
法蘭低溫閘閥執(zhí)行標(biāo)準(zhǔn):
設(shè)計(jì)與制造 | 結(jié)構(gòu)長(zhǎng)度 | 法蘭尺寸 | 壓力-溫度 | 試驗(yàn)-檢驗(yàn) |
JB/T7749 | GB12221 | JB79 | Gb9131 | JB/T9092 |
法蘭低溫閘閥壓力試驗(yàn):
公稱(chēng)壓力PN | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 |
強(qiáng)度試驗(yàn) | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 |
水密封試驗(yàn) | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 |
上密封試驗(yàn) | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 |
氣密封試驗(yàn) | 0.4-0.7 |
體蓋板 | 閥桿 | 密封面 | 墊片 | 填料 | 工作溫度 | 適用介質(zhì) |
ZGoCrMNVAI低溫高壓鑄鋼 | 1Cr7Ni12 | STL/STL | 1Cr13/柔性石墨 低溫石棉 | PTFE浸聚四氟乙 烯石棉繩 柔性石墨 | -46 | 丙烷/炳烯 甲醇/乙烷 煤氣/液氨 |
LCB | ||||||
ZGoCrMNVAI低溫高壓鑄鋼 | -60 | |||||
LC1 | ||||||
ZGoCrMNVAI低溫高壓鑄鋼 | -73 | |||||
LC2 | ||||||
ZGoCrMNVAI低溫高壓鑄鋼 | 1Cr18Ni9Ti | -101 | ||||
LC3 | ||||||
ZGoCrMNVAI低溫高壓鑄鋼 | -115 | |||||
LC4 | ||||||
ZGoCrMNVAI低溫高壓鑄鋼 | -196 |
主要外形尺寸和質(zhì)量Class 150
Valve Size | in | 2 | 2.5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 28 | 30 | 36 | 40 | 42 | 48 | 52 | |
mm | 50 | 6.5 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 750 | 900 | 1000 | 1050 | 1200 | 1300 | ||
A1 | in | 7.0 | 7.5 | 8.0 | 9.0 | 10.5 | 11.5 | 13.0 | 14.0 | 15.0 | 16.0 | 170 | 18.0 | 20.0 | 240 | 24.0 | 280 | 30.0 | 31.0 | 34.0 | 36.0 | |
mm | 178 | 190 | 203 | 229 | 267 | 292 | 330 | 356 | 381 | 406 | 432 | 457 | 508 | 610 | 610 | 711 | 762 | 813 | 864 | 914 | ||
A3 | in | 8.5 | 9.5 | 11.12 | 12.0 | 15.87 | 16.5 | 18.0 | 19.75 | 22.5 | 240 | 26.0 | 280 | 32.0 | 36.0 | 36.0 | 400 | 42.0 | 43.0 | 46.0 | 54 | |
mm | 216 | 241 | 283 | 305 | 403 | 419 | 457 | 502 | 572 | 610 | 660 | 711 | 813 | 914 | 914 | 1016 | 1067 | 1092 | 1168 | 1372 | ||
H | in | 15.4 | 16.7 | 18.1 | 22.8 | 30.6 | 38.4 | 46.4 | 54.6 | 60.0 | 68.7 | 79.1 | 917 | 109.6 | 127.4 | 134.5 | 161.8 | 183.9 | 174.4 | 217.5 | 227 | |
mm | 390 | 425 | 461 | 580 | 77.6 | 976 | 1178 | 1387 | 1523 | 1745 | 2010 | 2330 | 2748 | 3236 | 3417 | 4109 | 4670 | 4430 | 5525 | 5766 | ||
W | in | 7.9 | 7.9 | 7.9 | 9.8 | 11.8 | 14.0 | 17.7 | 17.7 | 19.7 | 22.0 | 13.8 | 17.7 | 17.7 | 22.0 | 220 | 27.9 | 31.5 | 31.5 | 35.4 | 35.4 | |
mm | 200 | 200 | 200 | 250 | 300 | 355 | 450 | 450 | 500 | 560 | 350 | 450 | 450 | 560 | 560 | 710 | 800 | 800 | 900 | 900 | ||
Weight | RF | ib | 48.5 | 55.1 | 66.2 | 99.2 | 187 | 295.5 | 445 | 639 | 816 | 1177 | 1475 | 1786 | 3153 | 4558 | 4827 | 7856 | 10370 | 10143 | 15677 | 18742 |
kg | 22 | 25 | 30 | 45 | 85 | 134 | 202 | 290 | 370 | 534 | 669 | 810 | 1430 | 2067 | 2189 | 3563 | 4703 | 4600 | 7110 | 8500 | ||
BW | ib | 44.1 | 46.3 | 61.7 | 92.6 | 161 | 244 | 399 | 584 | 750 | 1111 | 1365 | 1697 | 3336 | 4756 | 4981 | 8011 | 10436 | 10198 | 15545 | 18853 | |
kg | 20 | 21 | 28 | 42 | 73 | 111 | 181 | 265 | 340 | 504 | 619 | 770 | 1513 | 2157 | 2259 | 3633 | 4733 | 4625 | 7050 | 8550 |
主要外形尺寸和質(zhì)量Class 300
Valve Size | in | 2 | 2.5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 28 | 30 | 36 | 40 | 42 | 48 | |
mm | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 750 | 900 | 1000 | 1050 | 1200 | ||
A1&A3 | in | 8.5 | 9.5 | 11.12 | 12.0 | 15.88 | 16.5 | 180 | 19.75 | 30.0 | 33.0 | 36.0 | 39.0 | 45.0 | 53.0 | 55.0 | 68.0 | 760 | 780 | 87.2 | |
mm | 216 | 241 | 283 | 305 | 403 | 419 | 457 | 502 | 762 | 838 | 914 | 991 | 1143 | 1346 | 1397 | 1727 | 1930 | 1981 | 2215 | ||
A2 | in | 9.12 | 10.12 | 11.75 | 12.62 | 165.5 | 17.12 | 18.62 | 20.37 | 30.62 | 33.62 | 36.62 | 39.75 | 45.88 | 54.0 | 56.0 | 69.12 | - | - | - | |
mm | 232 | 257 | 298 | 321 | 419 | 435 | 473 | 518 | 778 | 854 | 930 | 1010 | 1165 | 1372 | 1422 | 1756 | - | - | - | ||
H | in | 162 | 17.7 | 19.0 | 23.7 | 32.0 | 40.2 | 48.8 | 56.8 | 66.1 | 78.4 | 85.9 | 93.5 | 112.6 | 130.0 | 148.5 | 169.8 | 1886 | 198.1 | 2174 | |
mm | 412 | 450 | 483 | 601 | 813 | 1020 | 1239 | 1443 | 1679 | 1993 | 2181 | 2376 | 2860 | 3302 | 3772 | 4312 | 4791 | 5032 | 5522 | ||
W | in | 7.9 | 7.9 | 8.8 | 9.8 | 140 | 15.7 | 17.7 | 19.7 | 17.7 | 17.7 | 22.0 | 22.0 | 27.9 | 35.4 | 35.4 | 30.0 | 30.0 | 30.0 | 30.0 | |
mm | 200 | 200 | 224 | 250 | 355 | 400 | 450 | 500 | 450 | 450 | 560 | 560 | 710 | 900 | 900 | 760 | 760 | 760 | 760 | ||
Weight | RF | ib | 63.9 | 88.2 | 105.8 | 163.2 | 313.1 | 485.1 | 721.0 | 1094 | 1530 | 2170 | 2880 | 3409 | 5204 | 80703 | 3591.6 | 151043 | 186543 | 209475 | 27342 |
kg | 29 | 40 | 48 | 74 | 142 | 220 | 327 | 496 | 694 | 984 | 1306 | 1546 | 2360 | 3660 | 4350 | 6850 | 8460 | 9500 | 12400 | ||
BW | ib | 52.9 | 77.2 | 81.6 | 141.1 | 269.0 | 379.2 | 5116 | 862 | 1420 | 1839 | 2317 | 2703 | 4212 | 6637 | 7629.3 | 11003 | 13582 .6 | 14994 | 19845 | |
kg | 24 | 35 | 37 | 64 | 122 | 172 | 232 | 391 | 644 | 834 | 1051 | 1226 | 1910 | 3010 | 3460 | 4990 | 6160 | 6800 | 9000 |
主要外形尺寸和質(zhì)量Class 600
Valve Size | in | 2 | 2.5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 28 | 30 | 36 | 40 | 42 | |
mm | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 750 | 900 | 1000 | 1050 | ||
A1&A3 | in | 11.5 | 13.0 | 14.0 | 17.0 | 22.0 | 26.0 | 31.0 | 33.0 | 35.0 | 390 | 43.0 | 47.0 | 55.0 | 61.0 | 65.0 | 82.0 | 940 | 98.0 | |
mm | 292 | 330 | 356 | 432 | 556 | 660 | 787 | 838 | 889 | 991 | 1092 | 1194 | 1397 | 1594 | 1651 | 2083 | 2387 | 2489 | ||
A2 | in | 11.62 | 13.12 | 14.12 | 17.12 | 22.12 | 26.12 | 31.12 | 33.12 | 35.12 | 39.12 | 43.12 | 47.25 | 55.38 | 61.5 | 65.5 | 82.62 | - | - | |
mm | 295 | 333 | 359 | 435 | 562 | 664 | 791 | 841 | 892 | 994 | 1095 | 1200 | 1406 | 1562 | 1663 | 2098 | - | - | ||
H | in | 18.5 | 19.5 | 22.1 | 26.7 | 37.2 | 43.7 | 52.1 | 65.9 | 72.1 | 82.9 | 98.0 | 104.8 | 116.9 | 140.2 | 152.8 | 179.5 | 207.6 | 240.0 | |
mm | 471 | 495 | 561 | 677 | 944 | 1110 | 1323 | 1675 | 1832 | 2106 | 2489 | 2662 | 29.70 | 3562 | 3880 | 4560 | 5273 | 6098 | ||
W | in | 8.8 | 8.8 | 9.8 | 11.8 | 17.7 | 19.7 | 24.8 | 22.0 | 22.0 | 27.9 | 27.9 | 31.5 | 35.4 | 30.0 | 300 | 30.0 | 30.0 | 300 | |
mm | 224 | 224 | 250 | 300 | 450 | 500 | 630 | 560 | 560 | 710 | 710 | 800 | 900 | 512 | 512 | 512 | 512 | 512 | ||
Weight | RF | ib | 94.3 | 132.3 | 154.4 | 295.5 | 628 | 988 | 1499 | 2355 | 28.36 | 4059 | 5700 | 6853 | 10337 | 133406 | 153137 | 214767 | 232628 | 241448 |
kg | 43 | 60 | 70 | 134 | 285 | 448 | 680 | 1068 | 1286 | 1841 | 2585 | 3108 | 4688 | 6050 | 6945 | 9740 | 10550 | 10950 | ||
BW | ib | 61.7 | 99.2 | 132.3 | 229.3 | 452 | 690 | 1180 | 2145 | 25.71 | 3332 | 4741 | 5640 | 8595 | 109809 | 125906 | 179487 | 188307 | 193379 | |
kg | 28 | 45 | 60 | 104 | 205 | 313 | 535 | 973 | 1166 | 1511 | 2150 | 2558 | 3898 | 4980 | 5710 | 8140 | 8540 | 8770 |
1.6MPa | DN | L | D | D1 | D2 | b | n-Φd | H | D0 |
凸面法法 RF DZ40Y-16LCB DZ40Y-16LC1 DZ40Y-16LC2 DZ40Y-16LC3 DZ40Y-16LC4 DZ40Y-16P DZ40Y-16R | 20 | 150 | 105 | 75 | 55 | 14 | 4-Φ14 | 320 | 140 |
25 | 160 | 115 | 85 | 65 | 14 | 4-Φ14 | 350 | 160 | |
32 | 180 | 135 | 100 | 78 | 16 | 4-Φ18 | 385 | 180 | |
40 | 200 | 145 | 110 | 85 | 16 | 4-Φ18 | 420 | 220 | |
50 | 250 | 160 | 125 | 100 | 16 | 4-Φ18 | 540 | 240 | |
65 | 265 | 180 | 145 | 120 | 18 | 4-Φ18 | 610 | 240 | |
80 | 280 | 195 | 160 | 135 | 20 | 8-Φ18 | 690 | 280 | |
100 | 300 | 215 | 180 | 155 | 20 | 8-Φ18 | 780 | 300 | |
125 | 325 | 245 | 210 | 185 | 22 | 8-Φ18 | 930 | 320 | |
150 | 350 | 280 | 240 | 210 | 24 | 8-Φ23 | 980 | 350 | |
200 | 400 | 335 | 295 | 265 | 26 | 12-Φ26 | 1180 | 400 | |
250 | 450 | 105 | 355 | 320 | 30 | 12-Φ30 | 1390 | 450 | |
300 | 500 | 460 | 410 | 375 | 30 | 12-Φ30 | 1620 | 500 | |
350 | 550 | 520 | 470 | 435 | 34 | 16-Φ34 | 1810 | 500 | |
400 | 600 | 580 | 525 | 485 | 36 | 16-Φ36 | 1970 | 550 | |
2.5MPa | 20 | 150 | 105 | 75 | 55 | 16 | 4-Φ16 | 320 | 140 |
凸面法法 RF DZ40Y-25LCB DZ40Y-25LC1 DZ40Y-25LC2 DZ40Y-25LC3 DZ40Y-25LC4 DZ40Y-25P DZ40Y-25R | 25 | 160 | 115 | 85 | 65 | 16 | 4-Φ16 | 350 | 160 |
32 | 180 | 135 | 100 | 78 | 18 | 4-Φ18 | 385 | 180 | |
40 | 200 | 145 | 110 | 85 | 18 | 4-Φ18 | 420 | 200 | |
50 | 250 | 160 | 125 | 100 | 20 | 4-Φ20 | 540 | 240 | |
65 | 265 | 180 | 145 | 125 | 22 | 8-Φ22 | 510 | 240 | |
80 | 280 | 195 | 160 | 135 | 22 | 8-Φ22 | 690 | 280 | |
100 | 300 | 230 | 190 | 160 | 24 | 8-Φ24 | 780 | 300 | |
125 | 325 | 270 | 220 | 188 | 28 | 8-Φ28 | 930 | 300 | |
150 | 350 | 300 | 250 | 218 | 30 | 8-Φ30 | 980 | 320 | |
200 | 400 | 360 | 310 | 278 | 34 | 12-Φ34 | 1180 | 360 | |
250 | 450 | 425 | 370 | 332 | 36 | 12-Φ36 | 1390 | 400 | |
300 | 500 | 485 | 430 | 390 | 40 | 16-Φ40 | 1620 | 450 | |
350 | 550 | 550 | 490 | 448 | 44 | 16-Φ44 | 1810 | 500 | |
400 | 600 | 610 | 550 | 505 | 48 | 16-Φ48 | 1990 | 560 |
4.0 MPa | DN | L | D | D1 | D2 | D6 | b | n-Φd | H | D0 |
凹面法法 MFM DZ40Y-40LCB DZ40Y-40LC1 DZ40Y-40LC2 DZ40Y-40LC3 DZ40Y-40LC4 DZ40Y-40P DZ40Y-40R | 20 | 150 | 105 | 75 | 55 | 51 | 16 | 4-Φ14 | 330 | 140 |
25 | 160 | 115 | 85 | 65 | 58 | 16 | 4-Φ14 | 360 | 160 | |
32 | 180 | 135 | 100 | 78 | 66 | 18 | 4-Φ18 | 440 | 180 | |
40 | 200 | 145 | 110 | 85 | 76 | 18 | 4-Φ18 | 455 | 200 | |
50 | 250 | 160 | 125 | 100 | 88 | 20 | 4-Φ18 | 575 | 240 | |
65 | 380 | 180 | 145 | 120 | 110 | 22 | 4-Φ20 | 635 | 240 | |
80 | 3103 | 195 | 160 | 135 | 121 | 22 | 8-Φ22 | 715 | 280 | |
100 | 50 | 230 | 190 | 160 | 150 | 24 | 8-Φ22 | 815 | 300 | |
125 | 400 | 270 | 220 | 188 | 176 | 28 | 8-Φ24 | 965 | 360 | |
150 | 450 | 300 | 250 | 218 | 204 | 30 | 8-Φ28 | 1025 | 400 | |
200 | 550 | 375 | 320 | 282 | 160 | 38 | 8-Φ30 | 1225 | 450 | |
250 | 650 | 445 | 385 | 345 | 313 | 42 | 12-Φ34 | 1440 | 560 | |
300 | 750 | 510 | 450 | 408 | 364 | 46 | 16-Φ34 | 1665 | 5470 | |
350 | 850 | 570 | 510 | 465 | 422 | 52 | 16-Φ41 | 1880 | 720 | |
4, 00 | 950 | 655 | 585 | 535 | 474 | 58 | 16-Φ18 | 2050 | 800 | |
6.4MPa | 20 | 190 | 125 | 90 | 68 | 51 | 20 | 4-Φ18 | 330 | 180 |
凹面法法 MFM DZ40Y-64LCB DZ40Y-64LC1 DZ40Y-64LC2 DZ40Y-64LC3 DZ40Y-64LC4 DZ40Y-64P DZ40Y-64R | 25 | 210 | 135 | 100 | 78 | 58 | 22 | 4-Φ23 | 360 | 180 |
32 | 230 | 150 | 110 | 82 | 66 | 24 | 4-Φ23 | 410 | 180 | |
40 | 240 | 165 | 125 | 95 | 76 | 24 | 4-Φ23 | 480 | 220 | |
50 | 250 | 175 | 135 | 105 | 88 | 26 | 4-Φ23 | 585 | 240 | |
65 | 280 | 200 | 160 | 130 | 110 | 28 | 8-Φ23 | 690 | 240 | |
80 | 310 | 210 | 170 | 140 | 121 | 30 | 8-Φ23 | 745 | 280 | |
100 | 350 | 250 | 200 | 168 | 150 | 32 | 8-Φ25 | 885 | 300 | |
125 | 400 | 295 | 240 | 202 | 176 | 36 | 8-Φ30 | 985 | 360 | |
150 | 450 | 340 | 280 | 240 | 204 | 38 | 8-Φ34 | 1050 | 400 | |
200 | 550 | 405 | 345 | 300 | 260 | 44 | 12-Φ34 | 1240 | 450 | |
250 | 650 | 470 | 400 | 352 | 313 | 48 | 12-Φ41 | 1460 | 560 | |
300 | 750 | 530 | 160 | 412 | 364 | 54 | 16-Φ41 | 1670 | 5640 | |
10.0MPa | 25 | 210 | 135 | 100 | 78 | 58 | 24 | 4-Φ18 | 365 | 200 |
凹面法法 MFM DZ40Y-100LCB DZ40Y-100LC1 DZ40Y-100LC2 DZ40Y-100LC3 DZ40Y-100LC4 DZ40Y-100P DZ40Y-100R | 32 | 230 | 150 | 110 | 82 | 66 | 24 | 4-Φ23 | 420 | 200 |
50 | 250 | 195 | 145 | 112 | 88 | 28 | 4-Φ25 | 630 | 240 | |
65 | 280 | 220 | 170 | 138 | 110 | 32 | 8-Φ25 | 700 | 240 | |
80 | 310 | 230 | 180 | 148 | 121 | 34 | 8-Φ25 | 760 | 280 | |
100 | 350 | 265 | 210 | 172 | 150 | 38 | 8-Φ30 | 900 | 280 |
美標(biāo)低溫法蘭閘閥訂貨須知:
二、若已經(jīng)由設(shè)計(jì)單位選定公司的低溫閘閥型號(hào),請(qǐng)美標(biāo)低溫閘閥型號(hào)直接向我司銷(xiāo)售部訂購(gòu)。
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美標(biāo)底溫碳鋼法蘭閘閥
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美標(biāo)底溫碳鋼法蘭閘閥