法兰用螺栓尺寸对照表
时间：2025-07-10
6)法兰用螺栓尺寸对照表（DIMENSIONSOFFLANGEBOLTS）
ForClass150LBFlanges
SizeNPS1/23/4111/411/2221/2331/2456810121416182024
No.ofBolts444444448888812121216162020
DiaofBolts
ISO
1/21/21/21/21/25/85/85/85/85/83/43/43/47/87/81111/811/811/4
M14M14M14M14M14M16M16M16M16M16M20M20M20M24M24M27M27M30M30M33
LengthofBoltRF6065657070859090909095100110115120130135150160175
RJ----80858595100100100100110115120130135150150160170185
No.ofBolts
44444888888121216162020242424
1/25/85/85/83/45/83/43/43/43/43/43/47/8111/811/811/411/411/411/2
ForClass300LBFlangesDiaofBolt
ISOM14M16M16M16M20M16M20M20M20M20M20M20M24M24M30M30M33M33M33M39
LengthofBoltRF657580859090100110110110120125140155170175190195205230
RJ75909095100100115120125130135140155170185190205210225255
ForClass400LBFlanges
SizeNPS1/23/4111/411/2221/2331/2456810121416182024
No.ofBolts44444888888121216162020242424
DiaofBolts
ISO
1/25/85/85/83/45/83/43/47/87/87/87/8111/811/411/413/813/811/211/4
M14M16M16M16M20M16M20M20M24M24M24M24M27M30M33M33M36M36M39M45
LengthofBoltRF759095110110120125140140145150150170190205210220230245270
RJ75909095110110120130140140150155175190205210225230250280
No.ofBolts
44444888888121216202020202424
1/25/85/85/83/45/83/43/47/87/81111/811/411/413/811/215/815/817/8
ForClass600LBFlangesDiaofBolt
ISOM14M16M16M16M20M16M20M20M24M27M27M27M30M33M33M36M39M42M42M48
RF75909095110110120125140145165170190215225235255275290330
LengthofBolt
RJ75909095110110120130140145165175195215225235255275295335
ForClass900LBFlanges
SizeNPS1/23/4111/411/2221/23456810121416182024
No.ofBolts4444488888121216202020202020
DiaofBolts
ISO
3/43/43/47/817/817/811/811/411/813/813/813/811/215/817/8221/2
M20M20M24M24M27M24M27M24M30M33M30M36M36M36M39M42M48M52M64
LengthofBoltRF105115125125140145160145170190190220235255275285325350440
RJ105115125125140145160145170190195220235255280295340360455
No.ofBolts
4444488888121212161616161616
3/43/47/87/8111/811/411/213/815/813/815/817/8221/421/223/4331/2
ForClass1500LBFlangesDiaofBolt
ISOM20M20M24M24M27M24M27M30M33M39M36M42M48M52M56M64M70M76M90
RF105115125125140145160180195250260290335375405115495540615
LengthofBolt
RJ105115125125140145160180200250265320345390425470530565645
ForClass2500LBFlanges
PipeSize
NPS1/23/4111/411/2221/2345681012
No.ofBolts44444888888121212
DiaofBolts
ISO
3/43/47/8111/8111/811/411/213/42221/223/4
M20M20M24M27M30M27M30M33M39M45M52M52M64M70
LengthofBoltRF120125140150170180195220255300345380490540
RJ120125140150170180205230260310355395510560
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