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Join Force Bellows Co. Ltd.
Bellows Type Expansion Joints





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Item Number.:
JF-250 Series
Product Name:
Bellows Type Expansion Joints
Description:
In addition to this Flanged Ends Bellows Type Expansion Joints, we also supply Bellows Type Flexible Joints and Axial Expansion Joints with durable quality.
Features:
JF-250 Series - Bellows Type Expansion Joints (Flanged Ends)
One-ply bellows welded to pipe nipples and flanges, with internal sleeve & tie-rods(optional).
Designed to absorb axial movement of low/medium pressure/temperature pipeline.


JF-250 Series
Size Range DN15 ~ DN600 (1/2” ~ 24”)
Pressure/Temperature rating 10 kg/cm2 at 120℃
Cycle Life Nc > 1,000 times

Construction

No. Parts 250SG 250S 250G 250N Material Option
1 Bellows S.S.304 S.S.316
2 Internal Sleeve S.S.304 S.S.316
3 Flange Carbon Steel S.S.304/S.S.316
4 Tube Ends Carbon Steel S.S.304/S.S.316
5 Tie Rods Carbon Steel S.S.304/S.S.316


Specification:

Specification (Fitted with JIS 10K flanges)

Size OAL Thickness of Flange Bellows Length Axial Movement Axial Spring Rate Effective Area
mm ins mm mm mm mm N/mm cm2
15 1/2 250 12 125 +10 -25 8 4
20 3/4 250 14 125 +10 -25 11 6
25 1 250 14 125 +10 -25 17 9
32 1 1/4 350 16 180 +10 -40 18 13
40 1 1/2 350 16 180 +10 -40 23 21
50 2 350 16 180 +10 -40 29 32
65 2 1/2 350 18 180 +10 -40 46 50
80 3 350 18 180 +10 -40 53 67
100 4 350 18 180 +10 -40 76 123
125 5 350 20 180 +10 -40 81 177
150 6 350 22 180 +10 -40 116 259
200 8 350 22 180 +10 -40 137 415
250 10 350 24 180 +10 -40 194 661
300 12 350 24 180 +10 -40 218 907
350 14 350 26 180 +10 -40 369 1167
400 16 350 28 180 +10 -40 465 1509
450 18 350 30 180 +10 -40 518 1880
500 20 350 30 180 +10 -40 819 2326
550 22 350 32 180 +10 -40 895 2781
600 24 350 32 180 +10 -40 971 3276
※Other size, pressure, axial movement, material are available on request

 
 
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