Custom Serpentine Tube Systems - Optimized For Energy Recovery Applications
Which industries commonly use serpentine tubes?
Applications: Heat exchangers(60%), boiler systems(25%), chemical reactors(15%) (Max pressure: 80MPa)
Some of the quality tests carried out by us includes:
| Corrosion Test |
Conducted only when specially requested by the client |
| Chemical Analysis |
Test done as per required quality standards |
| Destructive / Mechanical Testing |
Tensile | Hardness | Flattening | Flare | Flange |
| Reverse-bend and Re. flat tests |
Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end |
| Eddy Current Testing |
Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System |
| Hydrostatic Testing |
100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s . |
| Air Under Pressure Test |
To check any evidence of air leakage |
| Visual Inspection |
After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections |
Supplementary Testing : Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:
|
· Eddy Current Testing
· O.P Testing
· Radiography Testing
|
· Corrosion Testing
· Micro Testing
· Macro Testing
|
· IGC Testing
· Ultrasonic testing
· Liquid Penetrate testing
|
Product Introduction
|
Product Name
|
Economizer for Boiler
|
|
Structure Type
|
Tube Coil Serpentine Coil
|
|
Tube Material
|
- Carbon Steel : 20#, 20G, A195, A-1
- Corten Class Low Alloy Steel : Corten Steel, ND Steel (09CrCuSb)
- Alloy Steel : 15CrMoG, T11
|
|
Standard
|
China GB, ASME
|
|
Manufacturer Grade
|
China A Grade, ABS Certificated, TUV Certificated
|
|
Tube Type
|
|
|
Tube Specification
|
As per Customer requirements
|
|
Tube Thickness
|
As per Customer requirements
|
|
Working Pressure
|
1.6 MPa ~ 13.2 MPa
|
|
Working Temperature
|
depends on material
|
|
Welding
|
Automatic GTAW (TIG) tube butt welding
|
|
Welding NDT
|
Automatic RT 100%
|
The U-Bend Tube Comply With The Following Standards:
1. ASTM A688/ASME SA688
2. ASTM A803/ASME SA803
3. ASTM A556/ASME SA556
Steel Grade:
| Ferrite |
Austenite |
Duplex |
Super Duplex |
Ni-Alloys |
Titanium |
|
TP410
TP405
S44400
S44660
TP430
|
TP304/304L
TP316/316L
TP316Ti
TP317/317L
TP321
TP347
|
S31803
S32205
S32304
|
S32750
S32760
|
N06600
N08020
N00880
N08825
N08904
|
Gr.2 |
Tube Of Other Alloys And Steel Grades Can Be Produced Upon Agreement.
Technical Requirements:
Straight Tubes Standard Specification For Bending:
ASME SA 213; ASME SB 163; ASME A789, ASME SA268, ASME SA269, etc.
Marking: Before Bending By Marking Machine All Over The Tube Length (Bent Section After Heat
Treatment Without Marking)
Note: Marking is also possible After Bending On The Straight Parts Of U-Bending Tube.
U-Bend Tubes:
-TEMA RCB 2.31 Standard Of The Tubular Exchanger Manufacturers Association (9th Edition).
-ASTM A688/ASME SA688 Standard Specification For Welded Tubes Of Austenitic Corrosion Resistant
Steel Grade Designed For Feed Water Boilers.
-ASTM B163/ASME SA163 Standard Techinical Requirements For Tubes Of Nickel And Nickel Alloy For
Condensers And Heat Exchangers.
-Customer Specifications.
Bending Radius: From 1.5*OD(Outside Diameter) To 1500mm
When Ordering Tubes With Radius less or equal to 1.5*OD, It Is Necessary To Agree Precision Of Geometrics.
Straight Tubes Maximum Length:(Before Bending): 35000 mm.
Leg Length: Min 1 Meter, Max. 16500 mm (For Max R=1500mm)
Note: Other Size Are Available Upon Agreement.
Heat Treatment: Stress Relieved After U-Bending (Bending Area Plus 300MM For Each Leg).
Hydrostatic Test After U Bending: Maximum Test Pressure 600 Bar, Soaking 10 Sec. With
Dematerialized Water. Compressed Air Cleaning After Hydro-Test.
Packaging: In Strong Transport-Worthy Pre-fumigated wooden boxes of corresponding dimensions for
each tube Length, Radius, Diameter, According To PO requirements as well as wrapped In polyethylene
films With soft plastic caps on both end of Tube.
Votre message doit contenir entre 20 et 3 000 caractères!
