Practical Knowledge · 50 Guides
Welding & Gas Supply Guides
Straight-talking guides on gases, processes, consumables, equipment, cylinders, safety, and how to buy — written for welders, fabricators, and shops sourcing suppliers nationwide.
Shielding & Industrial Gases
Shielding gas mixes, fuel gases, purity grades, and flow-rate troubleshooting.
Types of Industrial Gas for Welding: A Complete Guide
Oxygen, acetylene, argon, CO₂, nitrogen, helium — what each gas is used for and where to source them.
MIG Welding Shielding Gas Guide: C25, CO₂ & Choosing the Right Mix
C25 vs 100% CO₂ vs C10 — which MIG shielding gas to use for mild steel, stainless, and aluminum.
TIG Shielding Gas Guide: Argon, Argon-Helium Mixes & Back-Purging
TIG shielding gas guide: why 100% argon rules, when to add helium, argon-hydrogen for stainless, back-purging, flow rates by cup and amperage.
Argon vs CO₂ vs Tri-Mix: How to Choose a Shielding Gas
Argon vs CO2 vs tri-mix shielding gas compared: penetration, spatter, cost per cubic foot, process matching, and which US distributors stock specialty blends.
Acetylene vs Propane vs Propylene: Choosing a Fuel Gas for Cutting & Heating
Acetylene vs propane vs propylene for cutting and heating: flame temps, BTU, tip types, the 15 psi limit, oxygen ratios, cost, and how to buy from US distributors.
Welding Gas Purity Grades Explained: Industrial, Welding & Specialty
Welding gas purity grades explained: decode 4.8 vs 5.0 argon, moisture and dewpoint limits, CGA connections, and how to order the right grade without overpaying.
Shielding Gas Flow Rates & How to Fix Weld Porosity
Fix weld porosity for good: correct shielding gas CFH by process and cup, why high flow causes turbulence, plus leak checks and a full diagnosis checklist.
Welding & Cutting Processes
MIG, TIG, stick, flux-core, oxy-fuel, and plasma — how they work and when to use each.
MIG vs TIG vs Stick vs Flux Core: Which Welding Process Is Right for You?
Side-by-side comparison of the four main welding processes — speed, cost, materials, and skill level.
TIG Welding Setup Guide: Tungsten, Gas, and Technique
Tungsten types, gas selection, filler metals, AC vs DC polarity, and back-purging stainless.
Plasma Cutting Guide: Equipment, Gas, Consumables, and Technique
How plasma cutters work, air vs oxygen plasma, consumable life, and amperage settings by thickness.
Stick Welding (SMAW) Guide: Electrodes, Amperage & Technique
Stick welding (SMAW) guide: E6010, E6011, E6013 and E7018 electrodes, DCEP vs DCEN polarity, amperage by rod size, rod oven storage and root-fill-cap technique.
Flux-Cored Arc Welding: Self-Shielded vs Gas-Shielded (FCAW)
FCAW self-shielded vs gas-shielded flux-cored welding compared: E71T-11 vs E71T-1, polarity, deposition rates, wire and gas costs for outdoor structural work.
Oxy-Acetylene Welding, Cutting & Brazing: Complete Guide
Expert guide to oxy-acetylene welding, cutting and brazing: torch anatomy, flame types, tip sizes, regulator pressures, flashback arrestors and buying tips.
Plasma vs Oxy-Fuel vs Laser Cutting: Which to Use
Plasma vs oxy-fuel vs laser cutting compared: thickness, metals, cut quality, kerf, HAZ, speed, gas and consumable costs, plus a fab shop decision matrix.
Consumables
Wire, electrodes, filler rods, tungsten, and MIG gun front-end parts.
Welding Consumables Guide: Wire, Electrodes, Filler Rods, and Tungsten
MIG wire, stick electrodes, TIG filler rods, tungsten grades, contact tips, and nozzles explained.
MIG Wire Selection: ER70S-6, ER70S-3, Stainless & Aluminum Wires
MIG wire selection guide: ER70S-6 vs ER70S-3, stainless ER308L/309L/316L, aluminum ER4043 vs ER5356, diameters, gas pairing and rust-free storage.
Stick Electrode Guide: E6010, E6011, E7018 & Filler Selection
Stick electrode guide to E6010, E6011, E7018 and filler selection: decode AWS A5.1, match strength, control 7018 moisture, and buy smart nationwide.
TIG Tungsten Guide: Electrode Colors, Grinding & Amperage
Expert TIG tungsten guide: electrode color codes, grinding angles, balling for AC aluminum, diameter-by-amperage charts, and why thoriated is phased out.
Filler Metal Selection Chart by Base Metal
Filler metal selection chart by base metal: match carbon steel, stainless, aluminum, chrome-moly, cast iron and dissimilar joints to the right AWS filler.
MIG Gun Consumables: Contact Tips, Nozzles, Liners & Diffusers
Master MIG gun consumables: size contact tips to wire, set tip recess, pick liners and diffusers, spot front-end wear, and cut costly downtime fast.
Equipment & Machines
Welders, regulators, torches, feeders, and matching power to the job.
Welding Machine Buyer's Guide: Transformer vs Inverter, MIG/TIG/Multiprocess
Welding machine buyer's guide: transformer vs inverter, MIG/TIG/multiprocess, input power, duty cycle, amperage by thickness, and realistic price tiers.
Gas Regulators & Flowmeters: Selection, Setup & Safety
Expert guide to gas regulators and flowmeters: single vs two-stage, CGA fittings, setting CFH, leak testing, CO2 freeze-up, and oxygen safety.
MIG Guns & TIG Torches: Amperage, Duty Cycle & Cooling
Expert guide to MIG guns and TIG torches: amperage and duty-cycle ratings, air- vs water-cooled thresholds, torch numbers, cups, cables, and consumables.
Wire Feeders & Spool Guns: Aluminum & Long-Reach Setups
Wire feeders and spool guns for aluminum MIG: why soft wire birdnests, spool gun vs push-pull, drive rolls, liners, tips, and portable feeder buying advice.
Welding Machine Duty Cycle & Power Requirements Explained
Understand welding machine duty cycle and power requirements: 10-minute ratings, 240V breaker and wire sizing, generator watts, and cord gauge.
Cylinders & Gas Handling
Cylinder sizes, rental vs ownership, bulk systems, storage, and DOT rules.
Industrial Gas Cylinders: Sizes, Rental vs Purchase, Safety & DOT Rules
Cylinder sizes explained, DOT hydrostatic test requirements, rental vs purchase economics, and storage.
Welding Gas Cylinder Size Chart: T, K, Q, MC & More
Welding gas cylinder size chart covering MC, R, Q, T, K and more with cubic-foot capacity, dimensions, weight, runtime and refill vs exchange cost tips.
Cylinder Rental vs Ownership: Total Cost of Ownership
Rent, lease, or buy welding gas cylinders? Break-even math, demurrage traps, hydro-test rules, and negotiation tips to cut your true cost of ownership.
Safe Cylinder Storage, Transport & DOT Compliance
Expert guide to safe compressed-gas cylinder storage, transport, and DOT compliance: securing, separation, ventilation, hydro-test dates, and CGA rules.
Bulk Gas & Micro-Bulk Systems: When to Switch from Cylinders
Know when to switch from welding gas cylinders to micro-bulk or bulk. Compare capacities, PSI, cost per cubic foot, telemetry, permitting and US suppliers.
Liquid Cylinders (Dewars) vs High-Pressure Cylinders
Liquid cylinder (dewar) vs high-pressure cylinder guide: capacity equivalence, gas vs liquid withdrawal, evaporation loss, economizer circuit, and when the switch pays.
Safety, PPE & Compliance
Fume hazards, ventilation, PPE, and OSHA/NFPA compliance.
Welding Helmets & Safety Gear: A Complete Guide
Auto-darkening vs passive helmets, shade numbers, gloves, FR jackets, and respirators.
Welding Fumes, Ventilation, and OSHA Safety Standards
Fume hazards by material, ventilation options, respirator selection, and OSHA 1910.252 standards.
Welding Gloves, Jackets & FR Clothing: PPE Guide
Expert guide to welding gloves, FR jackets and protective clothing: glove types by process, leather grades, NFPA 2112 gear, sizing, and when to replace.
Respirators for Welding: PAPR vs Half-Mask & Fume Control
PAPR vs half-mask respirators for welding fume control: when protection is required, N95 vs P100, fit testing, LEV, and OSHA 1910.134 compliance explained.
Hot Work Permits & Fire Watch: OSHA Requirements
Hot work permits and fire watch explained: OSHA 1910.252 and NFPA 51B triggers, the 35-ft rule, fire watch duties, extinguisher staging, and permit forms.
Confined Space Welding Safety & Ventilation
Confined space welding safety and ventilation guide: atmospheric testing, oxygen displacement, forced-air ventilation, LEV, rescue plans, and OSHA 1910.146.
Welding Fume Hazards by Metal: Hex Chrome, Manganese & Zinc
Welding fume hazards by metal: hexavalent chromium, manganese, zinc, cadmium and lead. OSHA PELs, air monitoring, controls and health risks for welders.
Buying, Pricing & Business
Choosing a supplier, decoding invoices, and negotiating gas pricing.
How to Choose a Welding Gas Supplier
What to look for, what to ask, and how to avoid common mistakes when selecting a gas supplier.
Independent vs Chain Welding Suppliers: What Welders Need to Know
The real differences between a local independent distributor and Airgas, Linde, or Air Liquide.
Welding Supplies Checklist: Everything Welders & Fabricators Need
A comprehensive checklist of gases, consumables, equipment, and safety gear — and how to source it.
How to Negotiate Cylinder & Gas Pricing
Learn how to negotiate cylinder and gas pricing like a 20-year distributor: unbundle rental, kill demurrage fees, win volume tiers, and switch suppliers.
Understanding Your Welding Gas Invoice: Fees & Charges Decoded
Decode your welding gas invoice line by line: gas fill, cylinder rental, demurrage, hazmat and enviro fees, delivery, price creep, and what's negotiable.
GAWDA & What a Certified Gas Distributor Means for You
What GAWDA membership means when vetting a gas supplier: FDA, DOT, CGA compliance, fill quality, traceability, and how to verify a distributor across the US.
Applications & Industries
Gas and supply needs by trade — auto, pipeline, fab, HVAC, food & beverage, and more.
Welding Gas & Supplies for Automotive & Auto Body Shops
Expert guide to welding gas and supplies for auto body shops: C25 vs argon, silicon-bronze MIG brazing, cylinder sizes, nitrogen, and picking a supplier.
Pipeline & Structural Welding: Gas, Rod & Process Requirements
Pipeline and structural welding supply guide: E6010/E7018 rod, FCAW wire, shielding gas, low-hydrogen practice, D1.1/API 1104 certs and bulk sourcing.
CO₂ for Restaurants, Breweries & Beverage Systems
A distributor's guide to CO2 for restaurants, breweries and beverage systems: beverage-grade gas, cylinder sizes, bulk tanks, nitro blends and safety.
Setting Up Gas Supply for a Metal Fabrication Shop
How to set up gas supply for a metal fabrication shop: estimating MIG/TIG/plasma/oxy demand, cylinders vs manifold vs bulk, safety layout, and picking a distributor.
Oilfield & Heavy Industry Welding Supply Needs
Oilfield and heavy-industry welding supply guide: rig pipe electrodes, engine-drives, bulk gas logistics, H2S/confined-space PPE, and VMI sourcing.
HVAC & Refrigeration: Brazing Gas & Nitrogen Purging
Expert HVAC/R brazing guide: oxy-acetylene vs air-acetylene, BCuP vs silver filler, nitrogen purging and pressure testing, plus how to source truck kits.
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