Can Vietnamese shops fabricate to DNV or ABS rules?

Several do, and the shipbuilding sector has done so for years. We only match class work to shops that can show a recent class-witnessed job and the material traceability it required.

Who arranges the class surveyor?

The buyer or the yard holds the class contract and appoints the surveyor. The fabricator provides access and documentation. We help schedule the witness points but hold no class contract ourselves.

What about seafastening and the lift study?

Ask for them in the RFQ. Shops with offshore experience include the lift study and seafastening drawings in their quote; others will need a marine warranty surveyor appointed by you.

How is the drawing protected?

Shops see a preview first. The drawing itself only moves after you agree, and under NDA if you ask for one.

Is there a fee for buyers?

No. Buyers pay nothing. Shops pay a fee for each RFQ they choose to take, and we take no commission on the order.

Marine and offshore · Heavy fabrication sourcing

Marine and offshore structures, built to the class rules on the drawing.

Hull subassemblies, module frames, deck skids, subsea equipment frames and the transport frames that carry them. Send the drawing; we match it with up to three Vietnamese shops that work to class rules and hold a coating line for marine exposure. They quote you directly.

Get Matched With a Heavy Frame Supplier What the drawing should say

01 · What we place

The marine and offshore work this network takes

Ship block subassemblies

Flat and curved panel units, foundations and seatings delivered to a yard for erection.

Offshore module and pancake frames

Primary steel for topside modules and equipment pancakes, with padeyes and seafastening designed for the lift.

Process and utility skids

Pump, chemical injection, metering and power generation skids with drip trays, lifting frames and certified lifting points.

Subsea equipment frames

Protection frames and mudmats for subsea hardware, often in coated carbon steel with cathodic protection provision.

Transport and seafastening frames

Grillages, cradles and seafastening steel for heavy lifts and ro-ro moves.

Davits, access steel and walkways

Secondary structure that still needs class-approved welds and marine coatings.

02 · Specification

What the drawing usually calls out

Typical call-outs for this class of work, credited to the standards that define them. They describe what buyers ask for, not a capability we hold ourselves. The shop that quotes confirms what it can actually meet.

Class rules	DNV, ABS, LR or BV rules as named on the drawing; class witness points and material traceability requirements stated up front
Material	Shipbuilding grades A, AH36, DH36 or EH36 with 3.2 certificates where class requires witness; S355 for non-class structure
Welding	Procedures per ISO 15614 or the class society scheme; welders qualified to ISO 9606 or class rules
Lifting points	Padeyes designed and load tested per DNV-ST-N001 or the client lifting specification, with test certificates
NDT	Extent per class rules; typically 100% UT on primary butts and MT on padeye welds
Coating	NORSOK M-501 systems or ISO 12944 C5-M and CX, on Sa 2½, with DFT and holiday testing recorded
Transport	Most module frames are breakbulk; the lift study and seafastening drawing are part of the fabrication scope

03 · Matching

How shops are shortlisted for marine and offshore work

Class experience, shown not claimed

We ask for a recent class-witnessed job before a marine drawing goes to a shop, and we tell you which society it was.

Coating line for marine exposure

NORSOK and C5-M systems need a controlled shop and an applicator that has been audited. We match to that line, not to the nearest yard.

Port on the doorstep

Breakbulk from an inland shop is a road permit problem. For module frames we weight the shortlist toward shops at or near a deep-water quay.

The full five-stage process is public on how we vet. Use it on your own suppliers if that is more useful than sending us the drawing.

FAQ

Questions marine and offshore buyers ask first

Can Vietnamese shops fabricate to DNV or ABS rules?: Several do, and the shipbuilding sector has done so for years. We only match class work to shops that can show a recent class-witnessed job and the material traceability it required.
Who arranges the class surveyor?: The buyer or the yard holds the class contract and appoints the surveyor. The fabricator provides access and documentation. We help schedule the witness points but hold no class contract ourselves.
What about seafastening and the lift study?: Ask for them in the RFQ. Shops with offshore experience include the lift study and seafastening drawings in their quote; others will need a marine warranty surveyor appointed by you.
How is the drawing protected?: Shops see a preview first. The drawing itself only moves after you agree, and under NDA if you ask for one.
Is there a fee for buyers?: No. Buyers pay nothing. Shops pay a fee for each RFQ they choose to take, and we take no commission on the order.

Guides

Read before you send the RFQ

Not sure this is the right category for your part? Email the drawing to and we will say plainly where it fits.

Have a marine and offshore drawing ready?

Send it with the destination port. Within 24 business hours we tell you which shops clear the envelope, and up to three of them quote you directly.

Get Matched With a Heavy Frame Supplier

We reply within 24 business hours.