•  Product Features

     Multiple Axial expansion joints are mainly used to absorb axial movement, such as that caused by thermal expansion or contraction of a pipeline, duct or vessel along the axis.

•  Applicable Conditions

Working pressure: 0.1 through 2.5 (MPa)
Working temperature: -20 through 450 (℃)
Service life: 1000 (times)
Flange：GB、ANSI、JIS、DIN etc


• Product Specification

Nominal ID(DN): Φ50 through Φ600 (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	6ZB32 x 20—F	32	18	20	350	48	8	130
	6ZB40 x 20—F	40	18	20	350	48	8	130
	6ZB50 x 20—F	50	28	20	390	66	12	140
	6ZB65 x 20—F	65	56	20	410	70	19	160
	6ZB80 x 20—F	80	70	20	470	45	16	185	φ89 x 4
	6ZBl00 x 20—J	100	108	20	540	65	46	205	φ108 x 4
	6ZBl25 x 20—J	125	164	20	590	85	42	235	φ133 x 4.5
	6ZBl50 x 20—J	150	234	20	655	88	88	260	φ159 x 4.5
	6ZB200 x 20—J	200	403	20	725	112	71	315	φ219 x 6
	6ZB250 x 20—J	250	616	20	780	108	130	370	φ273 x 9
1.0	10ZB32 x 20—F	32	18	20	350	40	38	140
	10ZB40 x 20—F	40	18	20	350	40	38	140
	10ZB50 x 20—F	50	28	20	390	50	47	160
	10ZB65 x 20—F	65	56	20	410	52	64	180
	10ZB80 x 20—J	80	70	20	470	42	58	195	φ89 x 4
	10ZBl00 x 20—J	100	108	20	540	52	77	215	φ108 X 4
	10ZBl25 x 20—J	125	164	20	590	63	110	245	φ133 x 4．5
	10ZBl50 x 20—J	150	234	20	655	67	169	280	φ159 x 4．5
	10ZB200 x 20—J	200	403	20	725	88	136	335	φ219 x 6
	10ZB250 x 20-J	250	616	20	780	87	219	390	φ273 x 9
1.6	16ZB32 x 20—F	32	18	20	350	30	60	140
	16ZB40 x 20—F	40	18	20	350	30	60	140
	16ZB50 x 20—F	50	28	20	390	34	48	160
	16ZB65 x 20—F	65	56	20	410	34	64	180
	16ZB80 x 20—J	80	70	20	470	36	66	195	φ89 x 4
	16ZBl00 x 20—J	100	108	20	540	39	128	215	φ108 x 4
	16ZBl25 x 20—J	125	164	20	590	48	212	245	φ133 x 4．5
	16ZBl50 x 20—J	150	234	20	655	54	288	280	φ159 x 4．5
	16ZB200 x 20—J	200	403	20	725	60	449	335	φ219 x 6
	16ZB250 x 20—J	250	616	20	780	67	418	405	φ273 x 9