Material of gland expansion joint

No.	Name	Quantity	Material
1	Cover	2	QT400-15, Q235A, ZG230-450, 1Cr13, 20
2	Sleeve	1	Q235A, 20, 16Mn, 1Cr18Ni9Ti
3	Gasket	2	NBR, CR, FPM, NR
4	Bolt	n	Q235A, 35, 1Cr18Ni9Ti
5	Nut	n	Q235A, 20, 1Cr18Ni9Ti

Introduce of telescopic joint The function of the gland type loose sleeve expansion joint is similar to that of the flexible clamp. It connects the pipes at both ends without welding the flange. Only by tightening the bolts and nuts, the sealing ring can prevent leakage and produce a certain amount of compensation for the pipes Because there is a certain gap between the body and the expansion pipe, it has a certain axial displacement, which can effectively compensate and relieve the thrust of the pipe blind plate in the pipeline, and also facilitate the installation, maintenance and replacement of water pumps and valves. It is actually the most ideal supporting product for pipeline installation and operation. The gland limit expansion joint can prevent the leakage and damage of the compensation joint caused by the excessive displacement of the pipeline. The gland limit expansion joint is mainly used for the loose connection of the pipeline that absorbs the axial displacement and bears the axial pressure thrust within the allowable displacement range. Specification List of dismantling joint

Nominal Diameter DN	External diameter of pipe DW	Length
		L1	L
65	76	180	208
80	89
100	108
	114
125	133
	140
150	159		220
	168
200	219
250	273
300	325	220	273
350	355
	377
400	406
	426
450	457
	480
500	508
	530
600	610
	630
700	720
800	820	290	355
900	920
1000	1020
1200	1220
1400	1420		377
1600	1620
1800	1820
2000	2020
2200	2220		400
2400	2420
2600	2620	400
2800	2820
3000	3020
3200	3220
3400	3420		490
3600	3620