Custom Sizes & Long Length Tubes
Custom heat exchanger tube sizes and long lengths, reviewed from specification through inspection and delivery.
DLSS supports project-specific outside diameter, wall thickness, finished length and dimensional requirements.
Manufacturing feasibility, inspection criteria and transportation requirements are reviewed before confirming the supply arrangement.
Custom Dimensional Requirements
Specify the required dimensions together with tolerances, inspection methods and acceptance requirements.
Outside Diameter
Required OD & Tolerance
Wall Thickness
Specified WT & Wall Basis
Finished Length
Cut Length & Length Tolerance
Straightness
Alignment & Measurement Requirements
Tube Ends & Surface
End Preparation · Cleanliness · Finish
Construction & Joints
Seamless / Welded · Joint Restrictions
Custom dimensions do not replace the governing product requirements. Any proposed deviation must be identified and agreed before production.
From Dimensional Review to Final Inspection
Special dimensions and extended lengths are reviewed as a complete project requirement—not as a length or diameter alone.
Confirm the Specification
Review the material, product standard, tube construction, dimensions and required tolerances.
Plan Manufacturing & Processing
Review the manufacturing route, material condition, heat treatment and finishing requirements.
Define Inspection & Records
Agree on measurement locations, inspection frequency, acceptance limits and required documentation.
Supporting Records Dimensional Report | Material Certificate | Required Test Reports | Heat Treatment Records Where Required | Traceability
Long Tube Handling & Packing
Handling and packing are planned together with tube length, bundle weight, material and delivery route. The arrangement is reviewed to support the tubes, protect their surfaces and ends, and limit movement during handling and transportation.
Tube Support
Support Positions · Bundle Restraint · Handling Plan
Surface & End Protection
Material-Compatible Protection · Protected Ends
Shipment Planning
Packing Dimensions · Destination · Loading Arrangements
Related Products & Technical Guides
Long Length Heat Exchanger Tubes
Explore long-length tube requirements by material and project specification.
Straight Heat Exchanger Tubes
Review straight-tube materials, construction and purchasing requirements.
Minimum Wall vs Average Wall
Understand the wall-thickness basis before confirming tube dimensions.
Tube Length Tolerance
Review finished-length requirements for exchanger fabrication.