JF-250ST

JF-250型 伸缩囊型伸缩接头

功能说明
JF-250系列 (外牙口)- 伸缩囊型伸缩接头
单层伸缩囊焊接端管,附有导流内筒,可增设保护外筒与设限拉杆。作为吸收中低温度与压力时之管路变位。

JF-250系列 (外牙口)
标准尺寸范围 DN15 ~ DN100 (1/2” ~ 4”)
压力/ 温度等级 10bars at 120℃
使用寿命 Nc > 1,000 次

JF-250系列 (外牙口) 结构表
项目 组件 250ST 250STC 250STG 250STGC 标准材质 选用材质
1 伸缩囊Bellows SS304 SS316
2 内筒Internal Sleeve SS304 SS316
3 管牙Screw Ends Carbon Steel S.S.304/ S.S.316
4 设限拉杆Tie Rods Carbon Steel S.S.304/ S.S.316
5 吊耳Lugs Carbon Steel S.S.304/ S.S.316
6 外筒External Covers Carbon Steel S.S.304/ S.S.316
规格说明
口径 全长 端管厚度 轴向伸缩量 轴向弹性系数 作用面积
250ST 250STC 250STG
mm ins mm mm mm mm mm N/mm cm2
15 1/2 250 300 350 2.8 +10 -25 13 4
20 3/4 250 300 350 2.9 +10 -25 19 6
25 1 250 300 350 3.2 +10 -25 28 9
32 1 1/4 350 400 450 3.5 +10 -40 18 13
40 1 1/2 350 400 450 3.5 +10 -40 22 21
50 2 350 400 450 3.8 +10 -40 29 32
65 2 1/2 350 400 450 4.2 +10 -40 46 50
80 3 350 400 450 4.2 +10 -40 53 67
100 4 350 400 450 4.5 +10 -40 76 123

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