DN200-100MM SS321 Welding Tube Bellows Expansion Joint
The welding tube bellows expansion joints are designed for the absorption of axial movements under specific pressure and temperature conditions, the bellows can make a long service life in pipeline system.
This expansion joints are widely used in the fields of chemical,petroleum,smelt,building,mechanical,gas and so on.
DN200-100MM Bellows Expansion Joint Drawing & Parameters
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NO.S | ITEMS | MATERIALS |
1 | Welding Tube | Stainless steel SS321 |
2 | Bellows | Stainless steel SS321 |
3 | Welding Tube | Stainless steel SS321 |
DN200-100MM Welding Tube Expansion Joint Technical Requirements In Production
1. This expansion joint is produced according to GB/T12777-2008<<Metallic Bellows Compensator General Technical Requirements>>.
2. Longitudinal seam of bellow is made by automatic argon arc welding,weld seam of bellow and compression cylinder section are welding by manual argon arc.
3. Longitudinal seam of bellows and butt-welding are used of 100% color penetration testing,according to GB/T12777-2008 5.5.1.2.
4. Bellows Expansion joint should be hydrostatically pressure tested after finished, test pressure is 0.15Mpa in 10 minutes , no leakage, no obvious structual deformation,and not have instability phenomenon.
5. Expansion joint should be air tightness tested after finished before delivery too,test pressure is 0.1Mpa,10 minutes time,no leakage.
6. Design pressure: 1 bar.
7. Design temperature: 600℃
How to Order the Welding Tube Bellows Expansion Joint
When you need order our welding tube bellows expansion joint,pls send us detail requirements of the expansion joint such as : Diameter; Total length; Materials of welding tube and bellows; Movements; Working pressure and working temperature , so we can design and quote according to your need.
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