Axial Expansion Joint

Axial Expansion Joint

JF-250STG

Axial Expansion Joint

Description

This is a Screw Ends Axial Expansion Joint with good quality and competitive price.
In addition to Screw Ends Axial Expansion Joint, we also supply Weld Ends Expansion Joint with superior quality.

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Features

JF-250 series (Screw Ends) Axial Expansion Joints
One-ply bellows welded to screw ends, with internal sleeve; tie-rods and external covers are optional. Designed to absorb axial movement of medium and/ or low pressure/ temperature pipeline.

Axial Expansion Joints – JF-250 series (Screw Ends)
Size Range	DN15 ~ DN100 (1/2” ~ 4”)
Pressure/ Temperature rating	10bars at 120℃
Cycle Life	Nc ＞ 1,000 times

Construction

No.	Parts	250ST	250STC	250STG	250STGC	Standard Material	Optional Material
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	Tie Rods					Carbon Steel	S.S.304/ S.S.316
5	Lugs					Carbon Steel	S.S.304/ S.S.316
6	External Covers					Carbon Steel	S.S.304/ S.S.316

Specification

Size		OAL			Thickness of Weld Ends	Axial Movement	Axial Spring Rate	Effective Area
Size		250ST	250STC	250STG	Thickness of Weld Ends	Axial Movement	Axial Spring Rate	Effective Area
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

※Other size, pressure rating, axial movement, and material are available on request.