Audited Supplier
Stainless Steel
High Temperature Piping
Ultra High Pressure Piping
ASTM, GB, API, DIN, JIS
Liquid
Round
Welding
DN50-9000
ZhiXing
Steel Frame, Pallet, Wooden Box
DN50-9000
China
Product Description
The expansion joints
Stainless steel expansion joints are special devices which compensate thermal pipe expansion or contraction and absorb equipment vibration or pipe motions.
Bellows is a basic part of expansion joint and it is made by forming metal cylinder into annular corrugations. The bellows can be single or multi-ply.
The bellows properties and their flexibility depend on shape of convolutions, thickness and number of plies. Convolution geometry and the above characteristics determine the pressure resistance, bellows spring rates and all kinds of movement absorption.
Single layer
Double layers
Multiple layers Materials for bellows and their temperature limits
| Materials | Temperature °C | ||||
| Type | EN 10027-2 | Steel name | USA AISI | min. | max. |
| Stainless austenitic steels | 1.4301 | X5CrNi18-10 | 304 | -196 | 550 |
| 1.4306 | X2CrNi19-11 | 304L | -270 | 550 | |
| 1.4401 | X5CrNiMo17-12-2 | 316 | -196 | 550 | |
| 1.4404 | X2CrNiMo17-12-2 | 316L | -270 | 550 | |
| 1.4435 | X5CrNiMo18-14-3 | -270 | 550 | ||
| 1.4541 | X6CrNiTi18-10 | 321 | -270 | 550 | |
| 1.4550 | X6CrNiNb18-10 | 347 | -196 | 550 | |
| 1.4571 | X6CrNiMoTi17-12-2 | 316Ti | -270 | 550 | |
| Heat resistant austenitic steels | 1.4828 | X15CrNiSi20-12 | 309 | -196 | 550 |
| 1.4876 | X10NiCrAlTi32-21 X10NiCrAlTi32-21 (H) | Incoloy 800 | -196 | 600 (900) | |
| Nickel alloys | 2.4610 | NiMo16Cr16Ti | Hastelloy C4 | -196 | 400 |
| 2.4816 | NiCr15Fe | Inconel 600 | -10 (-270) | 450 (900) | |
| 2.4856 | NiCr22Mo9Nb | Inconel 625 | -196 (-270) | 450 (900) | |
| 2.4360 | NiCu30Fe | Monel 400 | -196 | 425 | |
| 2.4858 | NiCr21Mo | Incoloy 825 | -10 | 540 | |
