Custom Manufacturing Process
From initial inquiry to final delivery, our streamlined custom manufacturing process ensures clear communication, technical precision, and reliable quality control at every stage. Select a product category below to view the specific workflow tailored to each product type.
20 Years Experience
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Finned Tube Custom Manufacturing Process — From material selection to final inspection. Our finned tubes are produced using high-frequency welding, laser welding, and extrusion technologies with full customization of tube material, fin material, fin type, diameter, and length.
1
Inquiry & Requirement Analysis
1–2 Working Days
Submit tube OD, fin height, fin pitch, tube length, and material preferences
Provide operating temperature, fluid type, and design pressure requirements
Share any reference drawings, samples, or existing specifications
Our engineering team reviews feasibility and proposes optimal fin type
Deliverable: Technical requirement confirmation document & preliminary recommendation
2
Design & Quotation
2–3 Working Days
Engineering team prepares detailed tube specification sheet with fin geometry
Material grade selection with cost optimization recommendations
Thermal performance calculation if required for application verification
Formal quotation with pricing, lead time, and payment terms
Deliverable: Technical datasheet, quotation, and production timeline
3
Order Confirmation & Production Preparation
1–3 Working Days
Purchase order confirmation and deposit processing
Final production drawings issued for customer approval
Material procurement with mill test certificates reserved
Production scheduling and quality control plan established
Deliverable: Approved production drawings & confirmed delivery schedule
4
Manufacturing & In-Process Inspection
7–15 Working Days
Tube preparation: cutting, cleaning, and surface treatment
Fin application: high-frequency welding / laser welding / extrusion process
In-process dimensional checks: fin height, pitch, OD, straightness
Welding strength sample testing per batch
Deliverable: In-process inspection reports & production progress photos (upon request)
5
Final Inspection & Testing
1–3 Working Days
100% dimensional inspection: fin OD, fin pitch, tube straightness
Hydrostatic pressure testing on tube bore (per specification)
Fin bonding integrity test: pull test / thermal cycling test
Visual inspection for surface defects and coating quality
Deliverable: Final inspection report, material certificates, pressure test reports
6
Packaging & Shipping
2–5 Working Days
Export-grade wooden crate packaging with moisture protection
Individual tube bundling and labeling per customer requirements
Shipping documentation: packing list, commercial invoice, certificate of origin
Container loading photos and tracking information provided
Deliverable: Complete shipping documents, tracking number & after-sales support activation
Heat Exchanger Custom Manufacturing Process — Comprehensive workflow for finned tube heat exchangers, copper-aluminum exchangers, and industrial heating/cooling units. Each unit is designed to your thermal duty specifications, dimensional constraints, and connection requirements.
1
Application Data Collection
1–3 Working Days
Submit hot side & cold side fluid types, flow rates, inlet/outlet temperatures
Provide design pressure, allowable pressure drop, and space constraints
Specify connection types, mounting orientation, and special requirements
Share existing drawings, photos, or reference models if available
Deliverable: Completed technical data sheet & application summary
2
Thermal Design & Quotation
3–5 Working Days
Thermal calculation and heat transfer area sizing
Tube arrangement, fin geometry, and header design optimization
Material selection: copper, stainless steel, carbon steel, aluminum options
3D model preview and GA drawing draft for review
Deliverable: Thermal design report, GA drawing draft, formal quotation
3
Drawing Approval & Order Processing
2–4 Working Days
Customer reviews and approves final GA and fabrication drawings
Purchase order confirmation and deposit arrangement
Material procurement with full traceability documentation
Production slot reservation and milestone schedule confirmation
Deliverable: Signed approved drawings, order confirmation, production schedule
4
Fabrication & Assembly
15–25 Working Days
Finned tube production, header fabrication, and frame construction
Tube-to-header assembly: expansion, welding, or brazing per design
Casing, connection flanges, and mounting bracket integration
Surface treatment: painting, galvanizing, or passivation per specification
Deliverable: Fabrication progress reports & photos at key milestones
5
Pressure Testing & Quality Inspection
2–4 Working Days
Hydrostatic pressure test on complete assembly at 1.5× design pressure
Leak detection: bubble test / helium leak test per specification
Dimensional verification against approved GA drawing
Final visual inspection for weld quality, coating, and labeling
Deliverable: Pressure test certificate, inspection report, material traceability docs
6
Packaging, Shipping & After-Sales
3–7 Working Days
Export wooden crate with desiccant, nitrogen purging for sensitive units
Complete shipping documentation package for customs clearance
Installation manual, operation guide, and maintenance instructions provided
Online technical support activation for commissioning assistance
Deliverable: Shipping documents, IOM manual, warranty certificate & support activation
Shell & Tube Heat Exchanger Custom Manufacturing Process — Specialized workflow for low-pressure shell and tube heat exchangers including fixed tube sheet, U-tube, floating head, and kettle type designs. Each unit is engineered to TEMA standards with full customization of size, materials, and pass configuration.
1
Process Data & TEMA Specification
2–4 Working Days
Submit complete process data: fluids, temperatures, pressures, flow rates, fouling factors
Specify TEMA type preference: BEM, BEU, BES, BEP, BKU
Provide available space envelope, nozzle locations, and orientation requirements
Indicate any code requirements: ASME Section VIII Div.1, PED, or local standards
Deliverable: Process data sheet confirmation & TEMA type recommendation
2
Thermal & Mechanical Design
4–7 Working Days
Thermal sizing: heat transfer area, tube count, tube length, baffle design
Mechanical design: shell thickness, tube sheet calculation, flange rating
Material selection: shell, tubes, tube sheets, baffles, gaskets, bolting
Preliminary GA drawing and technical specification document
Deliverable: Design calculation summary, GA drawing, formal quotation with lead time
3
Drawing Approval & Material Procurement
3–5 Working Days
Customer review and approval of fabrication drawings
Order confirmation with deposit
Procurement of shell plate, tubes, tube sheets, forgings with MTC
Third-party NDE and material verification if required by specification
Deliverable: Approved fabrication drawings, material certificates, confirmed schedule
4
Fabrication & Welding
20–35 Working Days
Shell rolling, longitudinal & circumferential seam welding with WPS/PQR
Tube sheet drilling, tube insertion, tube-to-tube sheet welding or expansion
Baffle assembly, tie rod installation, floating head assembly (if applicable)
Nozzle welding, saddle support fabrication, nameplate attachment
Deliverable: Weld map, welder certifications, NDE reports, progress photos
5
Testing & Final Inspection
3–5 Working Days
Shell side hydrostatic test per design pressure × 1.5
Tube side hydrostatic test with tube-to-tube sheet joint leak check
Radiographic / ultrasonic testing of critical welds per specification
Final dimensional inspection, surface preparation, and coating
Deliverable: Hydro test certificates, NDE reports, final inspection release note
6
Packaging, Documentation & Delivery
3–7 Working Days
Heavy-duty export packaging with bracing and weather protection
Manufacturer’s Data Report (MDR) compilation per code requirements
Installation, operation & maintenance manual with spare parts list
Shipping coordination with container/breakbulk options and insurance
Deliverable: Complete MDR documentation package, shipping documents, warranty
Industrial Condenser Custom Manufacturing Process — Dedicated workflow for fin-plate condensers with copper tube, stainless steel tube, aluminum fin, and copper fin combinations. Each condenser is custom-designed for your refrigerant type, condensing temperature, and cooling medium specifications.
1
Refrigerant & Duty Specification
1–3 Working Days
Specify refrigerant type: R134a, R407C, R410A, ammonia, CO₂, hydrocarbons
Provide condensing temperature, heat rejection duty, and condensing pressure
Define cooling medium: air (specify ambient temp), water, or glycol mixture
Indicate space constraints, preferred orientation, and connection types
Deliverable: Technical specification sheet & application confirmation
2
Thermal Design & Material Selection
3–5 Working Days
Condenser sizing: heat transfer area, tube rows, fin density, face area
Material combination selection based on refrigerant compatibility & environment
Fan selection (if air-cooled): airflow, static pressure, motor power
Preliminary 3D layout drawing and thermal performance guarantee
Deliverable: Thermal design report, material recommendation, GA drawing, quotation
3
Drawing Finalization & Order Processing
2–4 Working Days
Customer review and approval of final manufacturing drawings
Purchase order confirmation with deposit payment
Procurement of copper/stainless tubes, fin stock, headers, and casing materials
Production planning with milestone dates
Deliverable: Signed approved drawings, order confirmation, production schedule
4
Core Fabrication & Assembly
12–20 Working Days
Fin stamping and plate preparation with precise spacing control
Tube cutting, bending, and fin-plate stacking assembly
Tube-to-fin mechanical bonding: expansion process for optimal thermal contact
Header brazing/welding, return bend assembly, casing integration
Deliverable: Fabrication progress reports, core assembly photos
5
Leak Testing & Performance Verification
2–4 Working Days
Helium leak test or nitrogen pressure hold test on refrigerant circuit
Hydrostatic pressure test at 1.5× maximum allowable working pressure
Air-side pressure drop verification (if specified)
Final visual inspection for fin damage, coating integrity, and labeling
Deliverable: Pressure test certificate, leak test report, final inspection release
6
Packaging & Commissioning Support
3–5 Working Days
Export packaging with fin protection panels and refrigerant circuit sealing
Nitrogen holding charge for moisture prevention during transit
Complete documentation: test certs, material traceability, IOM manual
Remote commissioning guidance and first-startup technical support
Deliverable: Full documentation package, shipping details, commissioning support activation
Overall Process Timeline Summary
Inquiry to Quotation
3–7 working days including thermal design and technical proposal preparation
Drawing & Order Processing
3–7 working days for drawing approval, order confirmation, and material procurement
Manufacturing
7–35 working days depending on product complexity and order quantity
Testing & Shipping
5–12 working days for final testing, packaging, documentation, and dispatch
Start Your Custom Order Today
Ready to begin your custom manufacturing project? Contact our engineering team with your requirements and receive a comprehensive technical proposal within 3–7 working days. We support OEM and ODM orders with full technical guidance throughout the process.