Stainless Steel Expansion Bellows (Normal Type)
Stainless Steel Expansion Bellows (Normal Type) - 图片 2
Stainless Steel Expansion Bellows (Normal Type) - 图片 3
Stainless Steel Expansion Bellows (Normal Type) - 图片 4

Stainless Steel Expansion Bellows (Normal Type)

DEVEL® Stainless Steel Expansion Bellows (Normal Type) …

Category:

描述

DEVEL® Stainless Steel Expansion Bellows (Normal Type) are high-performance thermal expansion joints precisely engineered to absorb axial compression, elongation, and lateral deflection in metallic piping networks. Fabricated from multi-layer austenitic stainless steel grades, these corrugated bellows eliminate structural stresses caused by thermal variations and mechanical vibration. They are available in both butt-weld ends and flanged configurations to suit diverse industrial ducting and high-temperature fluid piping systems.

Key Technical Advantages

  • Optimized Multi-Convolution Geometry: Engineered with dedicated convolution structures to provide targeted flexibility and precise spring rate characteristics under load.
  • Dual Connection Versatility: Seamlessly accommodates either smooth weld-end configurations for monolithic lines or rigid flanged boundaries for modular pipeline sections.
  • Robust Fatigue Life: High-tenacity metal forming matrices exhibit superior resistance to structural stress crystallization and pressure cyclic fatigue under extreme thermal shifts.

General Parameters & Specifications

Parameter Specification
Nominal Diameter DN15 – DN4000 (1/2″ – 160″)
Pressure Rating PN0.25 – PN4.0 / Class 150 – 300
Operating Temp. -196°C – 700°C
Movement Capacity 30mm – 500mm
Bellows Material SS304, SS316L, SS321, Inconel 625
Connection Carbon Steel (Q235/A105) or Stainless Steel
Connection Standard GB, ANSI, DIN, JIS, EN 1092-1
Fatigue Life ≥ 1000 – 5000 times

Dimensional Specifications & Displacement Matrix

Nominal Diameter(DN) Number of
convolutions
(n)		 Install Length* Max Outer
Diameter O.D.
(mm)		 Movement
mm inch Weld end
(mm)		 Flange end
(mm)		 Axial
(mm)		 Lateral
(mm)
300 12 4 426 450 495 16 2.1
8 570 594 495 32 8.4
350 14 4 426 450 577 16 1.9
8 570 594 577 32 7.7
400 16 4 426 450 626 16 1.7
8 570 594 626 32 6.7
450 18 4 426 450 678 16 1.5
8 570 594 678 32 6
500 20 4 426 450 729 16 1.4
8 570 594 729 32 5.4
600 24 4 576 600 830 27 3.3
8 816 840 830 54 13
700 28 4 576 980 31 3.2
6 696 980 46 7.1
800 32 4 576 1080 30 2.8
6 696 1080 46 6.2
900 36 4 676 1180 30 2.5
6 796 1180 45 5.5
1000 40 4 676 1280 32 2.4
6 796 1280 48 5.3
1100 44 4 676 1380 32 2.1
6 796 1380 47 4.8
1200 48 4 676 1480 32 2
6 796 1480 47 4.4

* Note: Install length based on the Devel factory standard. Other lengths can be changed according to your requirement.

Related products