Sahawatthanakit (1988) Co., Ltd.
SAHAWATTHANAKIT(1988) · Make It Smart
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Industrial Shipyard — Bangkok Metro (name withheld)Private — Marine & Heavy Industry

Welding Blanket Supply for Industrial Shipyard — FM 4950 Class A-B-C Certified

Case study: supplying FM 4950 and EN 1869 certified fiberglass, silica, and ceramic welding blankets for continuous Hot Work operations at an industrial shipyard in the Bangkok metropolitan area.

2024-presentBangkok Metropolitan Area

Outcomes

  • 3-grade supply: FM 4950 Class A (fiberglass), B (silica), C (ceramic)
  • Zero fire blanket failure incidents during the engagement
  • 100% EN 1869 + FM 4950 certificates delivered with every batch
  • Urgent orders fulfilled within 48 hours for unscheduled Hot Work
Standards referenced
FM 4950 — Welding Blanket Class A (fiberglass), B (silica), C (ceramic)EN 1869:2019 — Fire blankets (European standard)ISO 11612 — Protective clothing against heat and flameOSHA 29 CFR 1910.252 — Welding, cutting and brazing safety
Hot Work welding operations at industrial shipyard with certified fire blankets

Engagement Overview

This industrial shipyard runs continuous Hot Work operations — welding, cutting, and grinding — both in open areas and in the confined spaces of ship structures. The HSE department mandates that every welding blanket must carry valid FM 4950 and EN 1869 certification before it may be used on the operational floor.

The facility had previously sourced blankets from multiple vendors. Several batches arrived without certification documents, triggering HSE holds that delayed Hot Work authorizations — and by extension, ship delivery schedules.


Customer Requirements

HSE set three non-negotiable conditions:

  1. Full certificate documentation per batch — FM 4950 Class and EN 1869 certificate must accompany every delivery
  2. Three or more grades available — Fiberglass (Class A, general use), Silica (Class B, high-temperature), Ceramic (Class C, extreme heat such as plasma cutting)
  3. ≤ 48-hour lead time for urgent orders — ship Hot Work is constrained by dry-dock schedules

Supplied Solution

Grade 1 — Fiberglass Welding Blanket (FM 4950 Class A)

Detail Specification
Material E-glass fiberglass woven
Continuous service temperature Up to 550°C
Sizes supplied 1.0 × 1.8 m, 1.8 × 1.8 m
Applications MIG/TIG/SMAW welding, general spark containment
Certification FM 4950 Class A + EN 1869

Grade 2 — Silica Welding Blanket (FM 4950 Class B)

Detail Specification
Material High-silica fiber (≥96% SiO₂)
Continuous service temperature Up to 1,000°C
Sizes supplied 1.0 × 1.8 m, 2.0 × 3.0 m (large area)
Applications Plasma cutting, preheating thick structural steel
Certification FM 4950 Class B + EN 1869

Grade 3 — Ceramic Fiber Blanket (FM 4950 Class C)

Detail Specification
Material Aluminosilicate ceramic fiber
Continuous service temperature Up to 1,260°C
Sizes supplied 1.0 × 1.5 m
Applications Extreme-heat operations, thermal shielding during structural welding
Certification FM 4950 Class C

Outcomes

Metric Result
Fire blanket failure incidents Zero since switching suppliers
Certificate completeness per batch 100% — no batch without documentation
Urgent order response time <48 hours every order
Grades available Class A / B / C — full range
HSE documentation holds Eliminated

Why the Shipyard Chose Us

  1. Authentic certification, not claims — FM 4950 and EN 1869 documents ship with every batch; no follow-up required
  2. Full grade range from one supplier — no need to manage multiple vendor relationships
  3. Application expertise — team can advise on correct grade before quoting
  4. Fast logistics — Bangkok warehouse stock enables <48-hour urgent fulfillment

Related Services

For welding or fabrication operations requiring certified fire protection — specify your grade, operating temperature, and coverage area; our team will advise and quote.

Learn more: Welding Blanket & Fire Protection

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