Welding Gases - Welding and Fabrication

Industrial shielding and fuel gases used for shipboard welding, shipyard fabrication, repair, cutting, and brazing. Common gases include argon, carbon dioxide, oxygen, nitrogen, helium, acetylene, and propane, supplied in cylinders or bulk systems.

ProShipWorks provides end-to-end support to source and supply Welding Gases for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.

Last updated: October 11, 2026

Product Information

Product Name	Welding Gases
Product Category	Welding and Fabrication
Product Reference	1214
Brands / Manufacturers	Linde, Air Liquide, Air Products
Unit of Measure	Cylinder

Key Features

Key Feature
1. Shielding gases protect weld pools from atmospheric contamination
2. Fuel gases support oxy-fuel cutting, heating, and brazing
3. Available as pure gases or certified mixtures
4. Supplied in high-pressure cylinders, bundles, or bulk tanks
5. Gas grade and purity must match the welding process and material

Applications of Welding Gases

Application
1. MIG/MAG, TIG, and FCAW ship welding
2. Oxy-fuel cutting and plate edge preparation
3. Heating, brazing, gouging, and fabrication work

Models & Manufacturers

Model	Manufacturer
Argon 4.6	Linde
ALPHAGAZ 1 Argon	Air Liquide
ARCAL Prime	Air Liquide

Technical Specifications

Model	Specification	Value	Unit
Argon 4.6	Argon purity	99.996 minimum	%
Carbon dioxide welding grade	Carbon dioxide purity	Typically 99.5 minimum	%
Oxygen industrial grade	Oxygen purity	Typically 99.5 minimum	%
Argon-carbon dioxide mixture	Typical composition	75% argon / 25% carbon dioxide	%
Acetylene dissolved	Cylinder filling pressure	Supplier- and temperature-dependent	bar

Standards, Certifications & Class Approval

Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.

Applicable Standards & Certification	Shielding gases for fusion welding are commonly classified under ISO 14175. Gas cylinders and transportable pressure receptacles are subject to applicable ISO, EN, ADR/IMDG, and national pressure-equipment regulations. Gas purity and certificates should be verified against the supplier certificate.
Class Approval	Welding gases are generally not individually type-approved by DNV, ABS, Lloyd's Register, BV, or ClassNK. Class requirements normally apply to the approved welding procedure, consumables, storage, handling, and execution; vessel-specific requirements should be confirmed with the attending class society.

Installation, Maintenance & Safety Information

Installation Notes	Secure cylinders upright in ventilated, designated storage areas. Use correct regulators, hoses, flashback arrestors, fittings, and gas-specific connections. Leak-test connections and keep oxygen equipment free from oil and grease.
Maintenance Tips	Inspect cylinders, valves, regulators, hoses, and flashback arrestors before use. Check test dates, labels, pressure, and gas certificates. Keep cylinders capped when not connected and return empty cylinders for controlled refilling.
Safety Notes	Keep oxygen away from oil, grease, and combustible materials. Store fuel gases separately from oxidizers and protect cylinders from heat, impact, and seawater corrosion. Ensure ventilation, gas detection where required, hot-work permits, and trained personnel.