Axial expansion joints - fixed flanges

CHARACTERISTICS:

Excellent reliability, no ageing, absence of permeability, resistant to corrosion, high working temperature In conformity with EJMA (Expansion Joint Manufacturer Association) Standards, movements indicated in the technical tables are calculated for 3000 complete cycles at nominal pressure.

MATERIALS:

• Bellows in stainless steel 1.4541 EN10028-7 (AISI 321)
• Flanges in carbon steel

On request, other grades of stainless steel or nickel alloys

CONSTRUCTION:

• Single or multi-ply metal corrugated bellows
• Ends: flanges; other types according to customer’s specifications

The corrugations are formed by a PLC controlled automatic process. The special forming process, free from friction and lamination, allows constancy and accuracy of the corrugation profile with minimal material yielding. Internal sleeves from rolled and welded austenitic stainless steel plate (nickel alloys on request)

TESTING:

• Pneumatic leak test (standard)
• Hydraulic test, specific dimensional controls, non-destructive tests, material certificates of main pressure bearing parts (on request)

FITTINGS:
Flanges conforming to EN1092-1 or ANSI B16.5
Special flanges upon request