Diameter 1/4inch to 1 1/4inch stainless steel ss304 ss316l annular corrugated flexible metal hose in coil
TECHNIQUE PARAMETER
DN | I.D | O.D mm | Pitch Distance | Wall Thickness | Weight | Min Bend Radius R.(mm) | Type H | Maxium length Per piece mm |
mm | inch | mm | Bellow | With 1 Ply Braid | mm | mm | Kg/m | Static | Dynamic |
12 | 1/2 | 12 | 18±0.3 | 21 | 4 | 0.25 | 0.2 | 40 | 130 | Annular | No limited |
15 | 5/8 | 15 | 21.5±0.3 | 24.5 | 4 | 0.28 | 0.32 | 70 | 190 | Annular | No limited |
18 | 11/16 | 18 | 25±0.3 | 28 | 4.5 | 0.28 | 0.36 | 90 | 205 | Annular | No limited |
20 | 3/4 | 20 | 28±0.3 | 33 | 4.5 | 0.28 | 0.38 | 175 | 400 | Annular | No limited |
25 | 1 | 24.4 | 32.5±0.3 | 35 | 4.5 | 0.28 | 0.5 | 225 | 510 | Annular | No limited |
32 | 1.25 | 32 | 41±0.3 | 45 | 5 | 0.28 | 0.6 | 280 | 640 | Annular | No limited |
ANNULAR CORRUGATED FLEXIBLE METAL HOSE PROCESS
TUBE
The manufacturing process of corrugated flexible metal hose starts with a stainless steel strip that is rolled and the edges welded together to form a thin-walled,gas-tight tube.Fustar offers:
HOSE
After the tube has been welded,corrugations are formed into the tube to make it flexible.There are two corrugation profiles,annular and helical.
Corrugations are formed into the tube either mechanically or hydraulically(Hydroforming)
Hydroforming enhances flexibility and cycle life,maintains wall thickness,reduces concentrated residual stress,and minimizes work hardening.Hydroforming is a clean process,using water to form the hose,while most other processes require lubrication.
CORRUGATION PROCESS FOR EXTRAFLEX AND HYDRAFLEX PRODUCTS
In addition to our line of annular corrugated metal hose,Fustar bellows offers two helical hoses that are specially designed to maximize performance without the drawbacks of traditional,mechanically-formed helical hose.Rather than welding a tube and mechanically forming the corrugation,these products are made from a stainless steel strip that is formed before welding.Because it is not mechanically formed from a tube,this hose is extremely flexible and does not contain the residual stresses found in traditional mechanically-formed helical hose.
Both Extraflex and Hydraflex are made by pre-forming the stainless steel strip,overlapping the material,and continuously resistance-welding the seam together.While Extraflex is made with one ply of stainless steel,Hydroflex is made with two plies for higher pressure ratings.
HYDROFORMED FEATURES&BENEFITS
· Feature - Hydroforming induces a minimum of residual stress in the hose wall,as compared to other methods of manufactuing
Benefit - Increased of resistance to stress minimizes hose failures and significantly increase cycle life
· Feature - A characteristic of hydroformed hose is a very uniform metal thickness throughout the corrugation profile.Mechanical forming can result in Significant variations in metal gauge
Benefit - Uniform wall thickness promotes even distribution of strain during flexing,thereby increasing hose longevity.
· Feature - The hydroformed manufacturing method incorporates three seperate tests of the butt-welded hose seam
Benefit - Ensures highest-quality hose and reduces premature product failure
· Feature - Hydroforming minimizes work hardening of the alloy during the corrugating process
Benefit - Results in a more flexible hose and maintains proper alloy yield strength
· Feature - Proprietary manufacturing process,combined with skilled workmanship,allow for the use of lighter gauge metals
Benefit - Allows for proper wall thickness,maximizing cycle life and flexibility
