Flange Sleeve Expansion Joint

Flange sleeve expansion joint is a kind of connecting device widely used in pipeline system, which is mainly used to connect two pipelines or equipments to ensure the normal operation of pipeline system.

Overview

Structural composition

Flange: The flange is the main body used to connect pipelines. Mainly composed of high-strength materials, ensuring stability during connection.

Expansion joint: Provides flexibility to adapt to the thermal expansion, contraction, and displacement changes of pipelines.

Seals: Ensure the sealing of the pipeline system to prevent medium leakage.

Fasteners: including bolts and nuts, used to tightly connect flanges.

Usage scenario:

1. Basic engineering such as chemical construction: Flange type loose sleeve expansion joints can adapt to temperature changes and foundation settlement, ensuring the stable operation of pipeline systems.

2. Long distance water pipeline: The flange type loose sleeve expansion joint can absorb the expansion and contraction of the pipeline caused by temperature changes and medium flow, ensuring the safe operation of the pipeline.

3. Heating pipeline network: The flange type loose sleeve expansion joint can compensate for the displacement of the pipeline caused by temperature changes and prevent pipeline damage caused by thermal expansion and contraction. ‌

Nominal Diameter DN	The outside diameter of pipe Dw	Length		Flange connection size
		L₁	L	0.25MPa			0.6Mpa			1.0MPa
		L₁	L	D	D₁	n-d0	D	D₁	n-d0	D	D₁	n-d0
65	76	105	118	160	130	4-ф 14	160	130	4-ф 14	185	145	4-ф18
80	89		118	190	150	4-ф18	190	150	4-ф18	200	160	8-ф18
100	108		123	210	170		210	170		220	180
100	114			210	170		210	170		220	180
125	133			240	200	8-ф18	240	200	8-ф18	250	210
125	140			240	200		240	200		250	210
150	159			265	225		265	225		285	240	8-ф22
150	168			265	225		265	225		285	240
200	219			320	280		320	280		340	295
250	273		130	375	335	12-ф18	375	335	12-ф18	395	350	12-ф22
300	325	130	160	440	395	12-ф22	440	395	12-ф22	445	400	12-ф22
350	355			490	445		490	445		505	460	16-ф22
350	377			490	445		490	445		505	460	16-ф22
400	406			540	495	16-ф22	540	495	16-ф22	565	515	16-ф26
400	426			540	495	16-ф22	540	495	16-ф22	565	515	16-ф26
450	457			595	550	16-ф22	595	550	16-ф22	615	565	20-ф26
450	480			595	550	16-ф22	595	550	16-ф22	615	565
500	508			645	600	20-ф 22	645	600	20-ф 22	670	620
500	530			645	600	20-ф 22	645	600	20-ф 22	670	620
600	610			755	705	20-ф26	755	705	20-ф26	780	725	20-ф30
600	630			755	705	20-ф26	755	705	20-ф26	780	725	20-ф30
700	720			860	810	24-ф 26	860	810	24-ф 26	895	840	24-ф30
800	820	220	255	975	920	24-ф 30	975	920	24-ф 30	1015	950	24-ф33
900	920			1075	1020	24-ф 30	1075	1020	24-ф 30	1115	1015	28-ф33
1000	1020			1175	1120	28-ф 30	1175	1120	28-ф 30	1230	1160	28-ф36
1200	1220			1375	1320	32-ф 30	1405	1340	32-ф33	1455	1380	32-ф40
1400	1420		270	1575	1520	36-ф30	1630	1560	36-ф36	1675	1590	36-ф42
1600	1620			1790	1730	40-ф30	1830	1760	40-ф36	1915	1820	40-ф48
1800	1820			1990	1930	44-ф30	2045	1970	44-ф40	2115	2020	44-ф48
2000	2020			2190	2130	48-ф30	2265	2180	48-ф42	2325	2230	48-ф48
2200	2220		275	2405	2340	52-ф33	2475	2390	52-ф42	2550	2440	52-ф56
2400	2420		275	2605	2540	56-ф33	2685	2600	56-ф42	2760	2650	56-ф56
2600	2620	240	300	2805	2740	60-ф33	2905	2810	60-ф48	2960	2850	60-ф56
2800	2820			3030	2960	64-ф36	3115	3020	64-ф48	3180	3070	64-ф56
3000	3020			3230	3160	68-ф36	3315	3220	68-ф48	3405	3290	68-ф60
3200	3220			3430	3360	72-ф36	3525	3430	72-ф48
3400	3420			3630	3560	76-ф36	3735	3640	76-ф48
3600	3620			3840	3770	80-ф36	3970	3860	80-ф56
3800	3820			4045	3970	80-ф39
4000	4020			4245	4170	84-ф39