Welding Blanket
Signature Welding Blanket
Seven DSZVCF models · up to 1760 °C · cut to your length × width
₹580.00/ NOS
Signature welding blankets · Visakhapatnam shipyards & ports
Welding blankets for Visakhapatnam shipbuilding, naval refit and port repair
Cutting shell plate in a Gandhigram dry dock, welding inside a refit compartment beside a switchboard and repairing a conveyor at Gangavaram are three different hot-work loads. This page sorts Visakhapatnam yard and port jobs into heavy vermiculite-coated DSZVCF blankets or the non-metallic medium-duty DSZMDWB2.4, then by thickness. Every blanket is made at our Ahmedabad factory to the size you order and dispatched to your yard.
For refit compartments and workshop benches
Refit welding near switchboards and cable runs, and everyday bench welding in Autonagar shops, usually need the medium-duty DSZMDWB2.4 rather than the heavy range. Request a quote here, or open the product to choose your size.
Visakhapatnam yards and harbours where welding blankets go down
Visakhapatnam's hot work is spread along the waterfront: the shipbuilding and repair yard at Gandhigram, the naval and commercial arms of the inner harbour, the fishing harbour inside the outer harbour, and the deep-water port at Gangavaram, with fabrication shops in Autonagar behind them. Each produces a different spark and slag load.
Gandhigram shipbuilding and repair waterfront
Shipyard with covered building dock, slipways, dry dock and wet basin
- Work done here:
- New-build hull blocks, ship repair and submarine refit
- Blanket duty:
- Block and hull welding in the building dock moves from section to section, so covers get dragged and refitted every shift. In the 244 × 38 m dry dock, gas cutting out old shell plate throws heavy slag onto the dock floor and the hull below.
Start with: DSZVCF3.0 / DSZVCF3.2; DSZVCF4.5 / DSZVCF5.0 under cutting
Inner harbour — north-western arm
Naval arm of the port's inner harbour
- Work done here:
- Warship and submarine maintenance and refit
- Blanket duty:
- Refit hot work inside compartments and machinery spaces sits close to switchboards and cable runs. That is where a non-metallic blanket matters; open-deck and structural work can stay on the reinforced heavy range.
Start with: DSZMDWB2.4 near cabling; DSZVCF3.2 on deck
Inner harbour — northern and western arms
Commercial berths, port craft and the inner-harbour dry dock
- Work done here:
- Cargo berths, cranes, hoppers and port-craft maintenance
- Blanket duty:
- Berth strengthening and jetty rehabilitation bring structural welding at the quay edge, while crane and hopper repairs mean overhead work that spreads spatter wide over the berth.
Start with: DSZVCF4.0
Outer harbour fishing harbour
Fishing harbour with its own dry dock, inside the outer harbour
- Work done here:
- Trawler and small-craft dry-docking and repair
- Blanket duty:
- Smaller hulls mean smaller covers, carried by one fitter and moved often between boats on the dock. Lighter reinforced or compact builds keep the kit manageable.
Start with: DSZVCF2.8; DSZVCF2.5 as a drop cloth
Gangavaram port area
Deep-water port about 15 km south of the main harbour
- Work done here:
- Mechanised coal, iron-ore and bulk handling across nine berths
- Blanket duty:
- Repairs on conveyors, transfer points, stacker-reclaimers and ship loaders — often overhead and at height, with the blanket left in place for a full maintenance window.
Start with: DSZVCF4.0 / DSZVCF4.5
Autonagar engineering estate, Gajuwaka
APIIC industrial estate near the port and steel zone
- Work done here:
- Engineering and fabrication workshops
- Blanket duty:
- Fabrication of brackets, frames, handrails and port steelwork on benches and jigs. Most of it is everyday welding inside the medium-duty window; cutting stations step up to heavy.
Start with: DSZMDWB2.4; DSZVCF3.0 at cutting stations
Matching the blanket to the yard or port job
Find the row closest to your job. Each row links to the product page that row recommends, where you pick the model, enter length and width, then buy online or request a quote.
| Hot-work job | Start with | Build | Working temperature | Order |
|---|---|---|---|---|
| Block and hull-section welding, cover moved shift to shift | DSZVCF3.0 / DSZVCF3.2 | 3.0–3.2 mm · 1500 GSM · SS metallic reinforced | 1260 °C to 1760 °C | |
| Gas cutting out shell plate in a dry dock | DSZVCF4.5 / DSZVCF5.0 | 4.5–5.0 mm · 2000–2200 GSM · SS metallic reinforced | 1260 °C to 1760 °C | |
| Crane, hopper or conveyor repair overhead on a berth | DSZVCF4.0 | 4.0 mm · 1700 GSM · SS metallic reinforced | 1260 °C to 1760 °C | |
| Refit welding in compartments near switchboards and cable runs | DSZMDWB2.4 | 2.4 mm · 1300 GSM · non-metallic fabric reinforcement | 900 °C to 1000 °C | |
| Trawler or harbour-craft repair, cover carried by one fitter | DSZVCF2.8 | 3.0 mm (as labelled) · 1100 GSM · SS metallic reinforced | 1260 °C to 1760 °C | |
| Bench and jig welding in a fabrication workshop | DSZMDWB2.4 | 2.4 mm · 1300 GSM · non-metallic fabric reinforcement | 900 °C to 1000 °C | |
| Compact drop cloth kept in a fitter's toolbox | DSZVCF2.5 | 1000 GSM · 1 × 2 m reference size | 1200 °C to 1760 °C |
Listed specifications for both ranges
Confirm the figures on the variant you select on the product page before you specify.
Signature Welding Blanket — heavy duty
- Seven DSZVCF models, vermiculite coated, brown
- DSZVCF2.8 to DSZVCF5.0: SS metallic reinforced, 3.0–5.0 mm, 1100–2200 GSM
- 1260 °C to 1760 °C; DSZVCF2.5 listed at 1200 °C to 1760 °C
- Reference roll 1 × 30 m (DSZVCF2.5: 1 × 2 m); sold per piece at your length × width
Signature Medium Duty Welding Blanket
- Single model DSZMDWB2.4, vermiculite coated, brown
- 2.4 mm, 1300 GSM, non-metallic fabric reinforcement
- 900 °C to 1000 °C
- Reference roll 1 × 50 m; sold per piece at your length × width
What to send before a docking or refit
Send these details with the docking or refit date and we can quote heavy and medium lines together.
- The hot work
- Hull or block welding, dry-dock cutting, compartment refit, berth or conveyor repair, or workshop fabrication.
- Heavy or medium
- A DSZVCF model or DSZMDWB2.4 — or just say whether the work is near live cabling and we will suggest one.
- Cover sizes
- Length × width in metres for each blanket, sized with margin beyond the cut or weld.
- Quantity per line
- One line per model and size, so dock-floor covers and compartment covers stay separate.
- Delivery pin and date
- Yard, port or workshop address in Visakhapatnam and the docking or refit start date.
Made in Ahmedabad, dispatched to Visakhapatnam yards
Darshan Safety Zone manufactures Signature welding blankets at our Ahmedabad factory, to the length and width on your order, and dispatches to yard, port and workshop addresses in Visakhapatnam. We do not hold stock or run a branch in Andhra Pradesh. We confirm dispatch for your models and quantities on the quotation, so put the docking or refit date on your request.
Other Signature products for the same job
A welding blanket shields the work area. These cover the fire-watch and the heat treatment around it.
- Signature Medium Duty Welding Blanket: DSZMDWB2.4 with non-metallic reinforcement, for refit welding near switchboards and for workshop benches.
- Signature Silicon Fire Blanket: Coated-face DSZSFG blankets for the fire-watch at the hot-work permit point — a separate job from shielding the deck.
- Ceramic fiber fabric in Visakhapatnam: DSZCF ceramic cloth for heat-treatment wraps and heat barriers, matched to Visakhapatnam steel, power and fabrication work.
Guides and industry journeys
The selection method behind this page, and how welding blankets fit a wider yard protection programme.
How to choose a welding blanket
Spark load, duty and thickness — the method behind the heavy and medium choices here.
Open guideWelding blanket vs fire blanket
Why the shield under the hot work and the fire-watch blanket are different products.
Open guideShipbuilding & marine
Hot-work and heat protection across a yard, refit or port maintenance programme.
Open industry journeyTalk to our team
Describe the job and the docking window if you are unsure between heavy and medium.
Open contact form
Comparing every welding blanket we make? Browse welding blankets.
Frequently asked questions
Answers for Visakhapatnam shipyard, refit and port-fabrication teams ordering Signature welding blankets.
Which welding blanket suits hull and block welding at a Visakhapatnam shipyard?
For covers that move with the welders from one block or hull section to the next, start with DSZVCF3.0 or DSZVCF3.2 — 1500 GSM, vermiculite coated, SS metallic reinforced and listed at 1260 °C to 1760 °C. The steel reinforcement gives the blanket body so it survives being dragged across decks and refitted every shift.
What should a dry-dock crew order for gas cutting out shell plate?
Step up to DSZVCF4.5 (4.5 mm, 2000 GSM) or DSZVCF5.0 (5.0 mm, 2200 GSM). Cutting throws slag further and harder than welding, and a blanket that stays under the cut for the whole repair needs the extra mass. Size it with margin beyond the cut line — slag travels further than most people expect.
When is the medium-duty DSZMDWB2.4 the right choice on refit work?
When steel in the blanket is the problem. DSZMDWB2.4 has non-metallic fabric reinforcement, so it does not give a conductive path — the one to drape near live panels, switchboards and cabling during compartment refits. It is 2.4 mm, 1300 GSM and listed at 900 °C to 1000 °C, so keep it to everyday welding and lighter spatter.
Heavy DSZVCF or medium DSZMDWB — how do I decide for port fabrication?
Go by the duty. Everyday stick, MIG or TIG welding on brackets, frames and handrails sits within the medium-duty window of DSZMDWB2.4 (900 °C to 1000 °C). Gas cutting, heavy slag, overhead repairs on cranes and conveyors, and covers left down for days call for the heavy DSZVCF range (1260 °C to 1760 °C on the reinforced builds).
Which model works for trawler and harbour-craft repair in the fishing harbour?
Smaller vessels usually mean smaller covers moved often. DSZVCF2.8 is the lightest reinforced roll build — labelled 3.0 mm at 1100 GSM despite the model number — and DSZVCF2.5 (1000 GSM, 1 × 2 m reference size, 1200 °C to 1760 °C) works as a compact drop cloth. Use DSZMDWB2.4 where the welding is close to wiring.
Do these welding blankets carry naval or marine approvals?
No naval or marine classification approvals are listed for these blankets. They are specified for spark, spatter and slag protection during hot work. Whether they meet a yard's or a vessel owner's own requirements is for that yard's hot-work and safety team to decide — tell us if you need product documentation with the quotation.
Can a welding blanket double as the fire-watch blanket on a hot-work permit?
No. A welding blanket shields decks, equipment and structure from sparks and spatter while the work runs. Smothering a fire is a different job for a product from the fire blanket category. Keep both on a shipyard permit and do not swap one for the other in the emergency plan.
How are the blankets sized and sold?
Both ranges are sold per piece. Choose the model, enter length and width in metres on the product page, and the blanket is supplied at that size. The 1 × 30 m (DSZVCF), 1 × 2 m (DSZVCF2.5) and 1 × 50 m (DSZMDWB2.4) figures are reference formats, not fixed catalogue sizes.
When should a blanket be taken out of service?
Shake off spatter and inspect after each job. Retire it when the vermiculite coating is worn through, the fabric is holed, or a section has gone stiff and brittle from repeated heat. Condition decides it, not a set number of jobs.
Do you have a branch or stock in Visakhapatnam?
No. Darshan Safety Zone, an ISO 9001:2015 certified manufacturer, makes Signature welding blankets at our factory in Ahmedabad, Gujarat, and dispatches to the yard or plant address on the order. We confirm dispatch for your models and quantities on the quotation.
Planning a docking, refit or port repair in Visakhapatnam?
Send the job, heavy or medium model, sizes, quantities and start date. We will quote from our Ahmedabad factory and confirm dispatch to your yard.