Build-to-Print Fabrication
Your drawing, fully fabricated and finished from a single source.
What it is
Complete build-to-print fabrication — material procurement, cutting, forming, welding, machining, finishing and inspection — delivered as a finished, documented part or assembly.
Applications
Materials
Finishes
Dimensional & Section Details
Engineering drawings for sizing, cross-sections and installation reference. Click any drawing to enlarge.
Buying build-to-print fabrication — answered
Practical answers for procurement, engineering and EPC teams — covering specification, standards, finish, lead time and export logistics.
The customer's drawing defines the part; we handle material procurement, cutting, forming, welding, machining, finishing and inspection. The customer doesn't manage the supply chain or the process — only the spec and the schedule. Most OEM exports and EPC sub-assemblies are bought this way.
MS, SS, aluminium, copper and structural steel for the material side; laser/plasma/oxy cutting, press-brake forming, CNC machining, MIG/TIG/SAW welding, HDG/powder/painting, deep-drawing — all in-house or via dedicated partners in our cluster. The customer sees one supplier, one delivery, one invoice.
From single prototype assemblies to full-container-load production. Below 5 pieces the setup cost dominates; from 50 pieces up the part cost is stable; above 5,000 we tool up to bring it down further. Most export work sits in the 100–2,000 piece-per-batch range.
Material certs at input, dimensional check at fabrication, weld inspection (visual, MPI, UT per drawing), galvanizing or paint thickness, functional test where applicable, final FAI on first batch. Reports travel with the consignment in PDF and physical form.
Yes — DWG, DXF, STEP, IGES, native SolidWorks/Inventor/CATIA files are routine inputs. We convert, verify against the PDF drawing, and start the manufacturing process from a controlled CAD baseline. Drawing revisions are tracked.
Manufacturing & Surface Treatment
All products are manufactured at Vajra's Howrah facility under ISO 9001:2015 quality management. In-house roll-forming, welding, galvanizing and testing — without sub-contractor dependency — ensures consistent dimensional accuracy and surface quality across export orders.
Precision Roll-Forming
CNC roll-forming lines capable of ±0.1 mm dimensional tolerance on MS, GI, SS, and aluminium sections.
Hot-Dip Galvanizing
In-house HDG plant conforming to ASTM A123 / IS 2629. Average coating: 85–140 µm. Pre-treatment: alkaline degreasing → pickling → fluxing.
Welding & Fabrication
MIG, TIG, SAW welding. Coded welders under ASME IX / IS 2825 qualification. Weld inspection by UT / DPT available.
Surface Treatment
Hot-dip galvanizing · Pre-galvanized GI · Powder coating (Tribo gun, 60–80 µm DFT) · Mill finish · Chromate passivation.
Available Material Grades
Surface Treatment Options
Manufacturing Tolerances
| Length tolerance | ±3 mm on standard lengths |
| Width tolerance | ±1 mm |
| Thickness tolerance | ±0.15 mm (IS 1079) |
| Straightness | ≤ 1 mm per 1 m |
| Galvanizing coat | 85 µm min (ASTM A123) |
| Squareness | ≤ 1 mm per 100 mm |
Global Supply & Export Documentation
Build-to-Print Fabrication is exported under a documented supply chain — from factory test certification through customs clearance to door delivery. All shipments are packed to sea-freight standards with full export documentation prepared in-house.
Incoterms Available
- FOB Kolkata
- CIF Port of Destination
- CFR
- EXW Howrah Works
- DDP (on request)
Export Documents
- Commercial Invoice & Packing List
- Bill of Lading / Airway Bill
- Certificate of Origin (CoO)
- Inspection Certificate
- Phytosanitary Certificate (where applicable)
- MSDS / Material Safety Data Sheet
- Test Reports & Mill Certificates
Packaging Standards
- Wooden crate — sea-freight grade
- ISPM-15 heat-treated pallets
- Steel-strapped bales for structural sections
- VCI poly wrapping for corrosion protection
- Moisture-absorbing desiccant sachets
Compliance & Standards
Manufactured and tested to:
ISO 9001:2015 quality management system. Third-party inspection available on request (SGS, Bureau Veritas, TÜV).
Lead time: Standard stock items ship within 7–10 working days after order confirmation. Custom fabricated quantities: 15–25 working days. Express production available — contact our export desk.
Sectors That Specify This Product
This product line is specified by procurement and engineering teams across the following sectors. Each industry page lists the specific product requirements, typical standards, and export documentation relevant to that buyer profile.
Power & Energy
Utilities & IPPs
Construction
EPC & civil contractors
Oil & Gas
Refineries & terminals
Manufacturing
Heavy process industry
Application engineering support: Our technical sales team provides product selection, load calculation references, and specification assistance for EPC, PMC, and procurement teams. Available for onsite consultation in major project cities.
Download Technical Documentation
Technical Datasheet
PDF · Engineering specifications · Export-ready
Complete engineering datasheet for Build-to-Print Fabrication — dimensional data, material grades, tolerances, applicable standards, and export compliance information.
Free · No registration required · Custom Fabrication datasheet
Request a quote for build-to-print fabrication.
Send drawings, a BOQ, or a simple description. You'll get a structured quotation covering specification, finish, lead time and Incoterms — from the manufacturer, not a middleman.
- MTC · COO · inspection reports
- ±0.01 mm precision · in-house QA
- FOB · CIF · CFR to all major ports