•  Product Features

   This type of expansion joints are equipped with a sealed chamber and can be buried directly under the ground without necessity of vertical well. It has advantages of easy installation and less investment.

•  Applicable Conditions

Working pressure: 0.1 through 2.5 (MPa)
Working temperature: -20 through 450 (℃)
Service life: 1000 (times)



• Product Specification

Nominal ID(DN): Φ50 through 2000 (mm)

•  STRUCTURE

• Material

1.Bellow：Stainless steels 304 316L 321 254 309 Inconel625 31803 etc
2.Flange、weld Ends：Carbon steel Stainless steels etc
3.Tie rod Nuts：Carbon steel Stainless steels etc 

• The product code consists of following elements　

•  Guides for expansion Joint installation

1. The expansion joint shall be installed according to the engineering drawing of pipe line and the expansion joint installations
2. In order to insure proper function of any expansion joints, it is necessary that all pipe lines in which expansion joints are located be suitably guided and anchored. The guides and anchors must be installed strictly in accordance to relevant technical documentation. Please refer to the “guideline for installation of Expansion Joints” about the principle of using guides and anchors.
3. Since the bellows used in expansion joints are made of thin stainless steel sheets, special attention shall be paid when transporting, handing and welding to avoid damage of bellows caused by dents, scores, arc strikes and weld spatters.
4. Any foreign laterals in the bellows and pipes shall be removed to ensure the proper function of expansion joints before installation.
5. If the flow direction is specified, be sure to install expansion joint with the proper orientation with the respect of flow direction arrow.
6. No movement of the expansion joint (such as axial compression or extension, lateral offset, or rotation) due to piping misalignment shall be imposed during installation so as to ensure proper function of the bellows.

• Date sheet

Date Sheet
PN MPa	Product type	Nominal Diameter DN（mm）	Bellows effctive area A(CM2)	Convolution number （n）	Overall Length L(mm）	Axial Movement X(mm)	Axial Spring rate kX。 N／mm	Max Diameter B(mm)	End pipe doxS (mm)
0.6	6NTZ40x10—J	40	28.3	10	410	17	228	φ150	φ45x3
	6NTZ50x10—J	50	41.3	10	410	16	288	φ160	φ57x3
	6NTZ65x8—J	65	80.1	8	550	41	148	φ205	φ73x3.5
	6NTZ80x8—J	80	107.5	8	590	42	172	φ222	φ89x4
	6NTZl00x8—J	100	145.1	8	590	41	200	φ240	φ]08x4
	6NTZl25x8—J	125	203.5	8	590	40	238	φ280	φ133x4.5
	6NTZl50x8—J	150	274.6	8	590	39	279	φ304	φ159x4.5
	6NTZ200x8—J	200	547.3	8	890	100	212	φ422	φ219x6
	6NTZ250x8—J	250	794.2	8	910	99	247	φ490	φ273x8
	6NTZ300x8—J	300	1104.4	8	1040	126	220	φ554	φ325x8
	6NTZ350x8—J	350	1432	8	1060	125	245	φ630	φ377x10
	6NTZ400x8—J	400	1787	8	1060	124	271	φ680	φ426x10
	6NTZ450x8—J	450	2197.8	8	1060	122	299	φ732	φ478x10
	6NTZ500x8—J	500	2642	8	1060	120	327	φ782	φ529x10
	6NTZ600x6—J	600	3758.8	6	1290	132	556	φ910	φ630x10
	6NTZ700x6—J	700	4775.9	6	1170	133	599	φ995	φ720x10
	6NTZ800x6—J	800	6079.3	6	1170	132	649	φ1095	φ820x10
	6NTZ900x6—J	900	7539.9	6	1220	130	700	φ1195	φ920x10
	6NTZl000x6—J	1000	9327.9	6	1360	163	480	φ1334	φ1020x10
	6NTZll00x6—J	1100	11118.3	6	1360	161	517	φ1434	φ1120x10
	6NTZl200x6—J	1200	13065.7	6	1400	159	556	φ1560	φ1220x12
	6NTZl300x6—J	1300	15196.5	6	1330	122	1127	φ1660	φ1320x12
	6NTZl400x6—J	1400	17460	6	1330	121	1205	φ1760	φ1420x12
	6NTZl500x6—J	1500	19880.6	6	1330	120	1282	φ1860	φ1520x12
	6NTZl600x6—J	1600	22458.3	6	1330	119	1360	φ1960	φ1620x12
1.0	10NTZ40x10—J	40	28.3	10	410	17	228	φ150	φ45x3
	10NTZ50x10—J	50	41.3	10	410	16	288	φ160	φ57x3
	10NTZ65x8—J	65	80.1	8	550	34	239	φ205	φ73x3.5
	10NTZ80x8—J	80	107.5	8	590	34	281	φ222	φ89x4
	10NTZl00x8—J	100	145.2	8。	590	33	331	φ240	φ108x4
	10NTZl25x8—J	125	203.5	8	590	32	400	φ280	φ133x4.5
	10NTZl50x8—J	150	274.6	8	590	31	472	φ304	φ159x4.5
	10NTZ200x8—J	200	547.3	8	890	82	348	φ422	φ219x6
	10NTZ250x8—J	250	794.1	8	910	80	422	φ490	φ273x9
	10NTZ300x8—J	300	1104.4	8	1040	103	360	φ554	φ325x9
	10NTZ350x8—J	350	1432	8	1060	10l	407	φ630	φ377x10
	10NTZ400x8—J	400	1787	8	1060	99	454	φ680	φ426x10
	10NTZ450x8—J	450	2197.8	8	1060	97	503	φ732	φ478x10
	10NTZ500x8—J	500	2642	8	1060	95	552	φ782	φ529x10
	10NTZ600x6—J	600	3758.8	6	1290	95	887	φ1022	φ630x10
	10NTZ700x6—J	700	4775.9	6	1170	95	956	φ1120	φ720x10
	10NTZ800x6—J	800	6079.3	6	1170	94	1035	φ1220	φ820x10
	10NTZ900x6—J	900	7539.9	6	1220	93	1116	φ1320	φ920x10
	10NTZl000x6—J	1000	9327.9	6	1360	141	1241	φ1460	φ1020x10
	10NTZll00x6—J	1100	11118.3	6	1360	140	1339	φ1560	φ1120x10
	10NTZl200x6—J	1200	13065.7	6	1400	138	1438	φ1684	φ1220x12
	10NTZl300x6—J	1300	15196.5	6	1330	133	1539	φ1784	φ1320x12
	10NTZl400x6—J	1400	17460	6	1330	132	1705	φ1884	φ1420x12
	10NTZl500x6—J	1500	19880.6	6	1330	130	1742	φ1984	φ1520x12
	10NTZl600x6—J	1600	22458.3	6	1330	128	1844	φ2084	φ1620x12
1.6	16NTZ40x10—J	40	28.3	10	410	16	228	φ150	φ45x3
	16NTZ50x10—J	50	41.3	10	410	15	288	φ160	φ57x3
	16NTZ65x8—J	65	80.1	8	550	36	335	φ254	φ73x3.5
	16NTZ80x8—J	80	107.5	8	590	37	388	φ270	φ89x4
	16NTZl00x8—J	100	145.1	8	590	37	452	φ290	φ108x4
	16NTZl25x8—J	125	203.5	8	590	36	539	φ326	φ133x4.5
	16T2150x8—J	150	274.6	8	590	35	632	φ352	φ159x4.5
	16NTZ200x8—J	200	547.3	8	890	79	744	φ480	φ219x6
	16NTZ250x8—J	250	794.2	8	910	77	901	φ546	φ273xg
	16NTZ300x8—J	300	1104.4	8	1040	97	815	φ636	φ325x9
	16NTZ350x8—J	350	1432	8	1060	95	923	φ712	φ377x10
	16NTZ400x8—J	400	1787	8	1060	93	1028	φ762	φ426x10
	16NTZ450x8—J	450	2197.8	8	1060	92	1140	φ814	φ478x10
	16NTZ500x8—J	500	2642	8	1060	90	1250	φ866	φ529x10
	16NTZ600x6—J	600	3758.8	6	1290	95	1810	φ1022	φ630x10
	16NTZ700x6—J	700	4775.9	6	1170	95	1951	φ1120	φ720x10
	16NTZ800x6—J	800	6079.3	6	1170	94	2113	φ1220	φ820x10
	16NTZ900x6—J	900	7539.9	6	1220	93	2278	φ1320	φ920x10
	16NTZl000x6—J	1000	9327.9	6	1360	109	2356	φ1460	φ1020x10
	16NTZll00x6—J	1100	11118.3	6	1360	107	2556	φ1560	φ1120x10
	16NTZl200x6—J	1200	13065.7	6	1400	105	2758	φ1684	φ1220x12
	16NTZl300x6—J	1300	15196.5	6	1330	101	2962	φ1784	φ1320x12
	16NTZl400x6—J	1400	17460	6	1330	100	3165	φ1884	φ1420x12
	16NTZl500x6—J	1500	19880.6	6	1330	99	3368	φ1984	φ1520x12
	16NTZl600x6—J	1600	22458.3	6	1330	99	3572	φ2084	φ1620x12