Long Length Heat Exchanger Tubes
Extended-length tubes for large heat exchangers, condensers and process heat-transfer equipment requiring project-specific tube lengths and controlled dimensional quality.
DLSS supplies long length heat exchanger tubes in carbon steel, stainless steel, duplex, super duplex, nickel alloy, titanium and selected copper alloys, with customized length, straightness, heat treatment, inspection and packing requirements.
Long tube capability is reviewed according to the material grade, OD, wall thickness, required length, manufacturing route, inspection requirements and transportation plan.
- Custom Length — Project-Specific Tube Lengths
- Wide Material Range — Carbon Steel to Special Alloys
- Dimensional Control — Length · Straightness · OD · WT
- Global Delivery — Long-Tube Packing & Logistics
Custom Length
According to Project Requirement
Straightness Control
For Long Bundle Assembly
Inspection Support
NDE · Dimensional · TPI
Packing & Logistics
Steel Frames · Cases · Long Cargo
Long Tubes for Large Heat Exchanger Bundles
Long length tubes are used in large heat exchangers and condensers where the equipment design requires extended tube lengths and continuous heat-transfer surfaces.
Compared with conventional tube lengths, long tubes require additional control over straightness, dimensional consistency, heat treatment, handling, inspection and transportation.
Critical purchasing requirements include:
Material grade · Product standard · Outside diameter · Wall thickness · Minimum or average wall basis · Required tube length · Length tolerance · Straightness · Heat treatment · Surface condition · NDE requirements · Packing method · Transportation limitations
DLSS reviews both manufacturing feasibility and logistics feasibility before confirming a long-length tube project.
Length Control
Finished length & tolerance
Straightness
Critical for bundle assembly
Full-Length Inspection
Dimensions · Surface · NDE
Logistics Review
Packing · Handling · Transportation
Long Length Heat Exchanger Tube Materials
Available long length depends on the material, dimensions, manufacturing route and project requirements.
Stainless Steel
304/304L · 316/316L · 321 · 347/347H · 904LFor general process, chemical, refinery and industrial heat-transfer applications.
Duplex Stainless Steel
S31803 · S32205For chloride-containing and corrosion-critical process environments.
Super Duplex
S32750 · S32760For severe chloride, seawater and demanding corrosion service.
Nickel Alloy
400 · 600 · 625 · 800/800H · 825 · C22 · C276For demanding chemical, corrosion and high-temperature applications.
Titanium
Grade 2 · Grade 7 · Grade 12For selected seawater, condenser, desalination and chloride service.
Copper Nickel
C70600 · C71500For condensers, cooling-water systems and selected seawater applications.
Brass
C68700 · C44300For condensers, evaporators and selected cooling-water applications.
Carbon & Alloy Steel
ASTM A179 · Selected A213 T-SeriesFor heat exchangers, condensers and selected elevated-temperature heat-transfer service.
Critical Long-Length Tube Requirements
Long length should never be evaluated by length alone. Material, OD, wall thickness, straightness, inspection and transportation must be reviewed together.
Tube Length
Project-specific finished length
Length Tolerance
Controlled for bundle assembly
Straightness
Critical across the full tube length
Wall Thickness
Consistent dimensional control
Heat Treatment
Uniform treatment along extended lengths
Handling & Support
Controlled during production, inspection and packing
Long Length Tube Project Experience
ASTM A179 Long Length Heat Exchanger Tubes
Material
ASTM A179 / ASME SA179
Tube Size
25.4 × 2.11 mm
Tube Length
18,300 mm
Tube Form
Straight
Product
Heat Exchanger Tubes
Long tube projects require more than manufacturing capability. Straightness, full-length dimensional control, inspection, handling, packing and transportation must be considered together before shipment.
DLSS reviews these requirements at the project stage to reduce the risk of tube deformation, handling damage and installation issues during exchanger fabrication.
Long Length Heat Exchanger Tube Specifications
Maximum practical tube length depends on material grade, OD, wall thickness, manufacturing route, inspection requirements and logistics conditions.
| Specification | Available Options |
|---|---|
| Materials | Carbon Steel / Stainless / Duplex / Nickel / Titanium / Copper Alloy |
| Tube Size | Project-Specified OD & WT |
| Length | Customized |
| Straightness | Project Requirement |
| Heat Treatment | According to Material Standard |
| Inspection | Dimensional / NDE / Hydro / PMI / TPI |
| Documentation & Packing | MTC / EN 10204 3.1 / 3.2 / Steel Frames / Cases |
Long Tube Manufacturing & Quality Control
01 — Technical Review
Grade · Standard · OD · WT · Length
02 — Manufacturing Planning
Process · Heat Treatment · Length Control
03 — Full-Length Dimensional Control
Length · OD · WT · Straightness
04 — Inspection & Documentation
NDE · Reports · Traceability
05 — Packing & Shipment Planning
Support · Protection · Transport
Long Tube Packing & Global Delivery
Long-length tubes require dedicated handling and packing to reduce the risk of bending, surface damage, tube-end deformation and movement during transportation.
The packing method is reviewed together with the tube length, material, bundle weight and shipping route.
Steel Frame Packing
Rigid support for long tube bundles
Wooden Cases
Project-specific protection
Tube-End Protection
Caps · Wrapping · Reinforcement
Internal Supports
Reduced movement during handling
Container Planning
Where dimensions permit
Special / Breakbulk Cargo
For oversized long-length shipments
Long Length Tube Inspection
Dimensional Inspection
OD · WT · Length
Straightness
Full-Length Alignment
NDE
ET · UT
Pressure Testing
Material Verification
PMI
Third-Party Inspection
TPI according to project ITP
Documentation
MTC · Dimensional Report · NDE Reports · Hydro Report · EN 10204 3.1 / 3.2 · TPI Release
Project Documentation Support
- EN 10204 3.1 / 3.2 Certificates
- MTC (Mill Test Certificate)
- PMI Report
- ET / UT Reports
- Dimensional Reports
- Packing List & More
Complete documentation for seamless approvals and traceability.
Why DLSS for Long Length Heat Exchanger Tubes?
Project-Specific Length
No One Fixed Maximum
Straightness Control
For Bundle Assembly
Wide Material Range
Carbon Steel to Special Alloys
Inspection Support
NDE · Dimensional · TPI
Logistics Planning
Packing · Handling · Delivery
FAQ
What materials are available for long length tubes?
What is the maximum tube length available?
How is straightness controlled?
What inspection can be arranged?
How are long tubes packed?
Long Length Tube Technical Resources
Tube Length Tolerance
Understand finished-length requirements for exchanger fabrication.
Tube Straightness
Understand straightness requirements for long exchanger tubes.
Wall Thickness Tolerance
Understand WT variation along the tube length.
Minimum WT vs Average WT
Understand the wall basis before ordering.
Packing & Global Delivery
Long-tube protection and transportation considerations.
Long Length Tube Projects
Real project examples and inspection cases.