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  • 1.5 Liquefied Petroleum Gas Combustion

    1.5 Liquefied Petroleum Gas Combustion 1.5.1 General1 Liquefied petroleum gas (LPG or LP-gas) consists of propane, propylene, butane, and butylenes; the product used for domestic heating is composed primarily of propane. This gas, obtained mostly from gas wells (but also, to a lesser extent, as a refinery by-product) is stored as a liquid under

  • Arc & Gas Welding & Cutting Equipment

    welding & cutting 1.3 18.75 313 650 A-1.5 Indicator 0701282686* Oxygen Scrap cutting & heating, welding & cutting 10 145 1170 2480 O-10 Indicator 0701282683* Propane Scrap cutting & heating, welding & cutting 4 60 267 560 P-4 Gaugeless 0701282687* R Footnote Connections are RH for Oxygen, Argon. LH for Acetylene, Propane.

  • Straight Line Cutter

    Maintain the machine periodically. 1.2 GAS CUTTING SAFETY PRECAUTIONS Strictly observe the safety rules and precautions to ensure the safety of gas cutting operations. Operators and supervisors MUST keep safety in mind. 1.2.1 PREVENTION OF EXPLOSION 1. Never cut pressurised cylinders or hermetically sealed containers.

  • Gas-Cutting: Process, Techniques and Advantages | Welding

    Process of Gas Cutting 2. Efficiency of Gas-Cutting 3. Equipments 4. Limitations. Process of Gas Cutting: Apart from using hacksaw, power saw, chisels, etc. for metal cutting operation, gas or oxygen cutting is extensively used now-a-days in industry. Oxy-fuel cutting …

  • INSTRUCTION MANUAL - Welding, Brazing, Heating, …

    Gas Welding , Brazing & Cutting Basic Gas Welding Procedures Gas Welding. Gas welding is a method of joining similar metals by heating the adjacent surfaces to the melting point with an oxy-acetylene flame, and allowing the two parts to fuse together, with a filler metal being required on …

  • Cutting Processes - Application of Oxyfuel Cutting - TWI

    Propylene is a liquid petroleum gas (LPG) product and has a similar flame temperature to MAPP (2896°C compared to 2976°C for MAPP). It gives off a high heat release in the outer cone (72,000 kJ/m3) but, like propane, it has the disadvantage of having a high stoichiometric oxygen requirement (oxygen to fuel gas ratio of approximately 3.7 to 1 ...


    February 2015 Issue //2 Pg 2 of 2 The instructions recommended within this document apply to normal risk conditions. If the Oxy Welding Cutting Equipment is to be operated in a dangerous or hostile environment, the user/client

  • CNC Gas Cutting Machines - CNC Gas Cutting Machine ...

    Cutting Thickness. 6 - 300mm MS by Gas cutting. Features: Highly robust and rigid mechanical structure. Excellent cut quality. Low operating costs. Advanced control system with touch-screen interface. Air conditioned control panel ensures high reliability of …

  • Guidelines for Gas Welding and Cutting - BOC

    12.0 Gas Cutting 40 13.0 Oxy-fuel Cutting Procedures 42 13.1 Cutting Attachment Operation 42 13.2 Setting Up 43 13.3 Lighting Up 44 13.4 Closing Down 45 14.0 Oxy-acetylene Cutting Techniques 46 14.1 How it Works 46 15.0 Using the Cutting Assembly 48 16.0 Mild Steel Cutting 49 16.1 Thin Steel 49 16.2 Thick Steel 49

  • Oxy-Acetylene Cutting Processes | Metallurgy

    ADVERTISEMENTS: Subject-Matter of Oxy-Acetylene Cutting Process: In modern steel-age the steel-makers cut Iron and Steel by oxy-acetylene, oxy-hydrogen, oxy- propane, oxy-natural gas cutting blowpipes easily, speedily, and cleanly. Cutting of metals by means of flame has many advantages over other methods, specially when the metal is of irregular shape. When using oxy-acetylene a special torch

  • ENG723 Basic gas -

    propane produce a reactive secondary flame that interferes with the molten metal, making them unsuitable for welding. These and other fuel gases are suitable for heating and cutting purposes. In this chapter you will look at the following. Personal safety for oxygen-fuel gas plant use, including: what you should wear when using an oxygen-fuel ...

  • Analisis pemotongan logam ST-37 dengan mesin potong ...

    This gas cutting machine is an ST-37 metal cutting tool in a semi-automatic way using Liquified Potroleum Gas (LPG) and Oxygen gas materials. LPG gas is used with a composition of propane 80% and Isobutane 20%. In the process of cutting metal based on several parameters, namely: metal thickness, oxygen gas pressure, and LPG gas and cutting speed.


    general comments / recommendations about fuel gas: 1. If using cylinder oxygen, try to use a fuel with the lowest oxygen factor to minimize cost, cylinder handling and rental charges. See “Preheat Flame Cost Calculation Chart” on Page 8. 2. For very thin plate cutting (less than or equal to 1/ ”), acetylene provides minimum plate distortion

  • Oxyfuel Cutting - Process and Fuel Gases - TWI

    Oxy-fuel cutting is a thermal cutting process that uses oxygen and fuel gas (such as acetylene, propane, MAPP, propylene and natural gas) to cut through materials. The oxyfuel process is the most widely applied industrial thermal cutting process because it can cut thicknesses from 0.5mm to 250mm, the equipment is low cost and can be used ...

  • Personal Protective Equipment (PPE) for Welding and Cutting

    and radiation. The use of PPE is a good safe practice and may be required by regulatory agencies. For example, OSHA requires the use of PPE when engineering and administrative controls are not feasible or effective. NATURE OF THE HAZARD Welding and cutting can produce hazards such as sparks, spatter, radiation (infrared,

  • 9505643 RevC 04052010 9505643

    Bleed off all fuel gas at torch “GAS” valve, (Fig. 12) then close the valve. 5. All pressure gauges should read 0 PSI. Turn both pressure regulator adjusting keys (Fig. 8) counterclockwise until loose. Gas Welding and Steel Flame Cutting Basic Gas Welding Procedures Gas Welding.Gas welding is a method of joining similar metals


    Liquefied Petroleum Gas (LPG) is already well-known and well-used fuel for domestic, industrial and commercial appliances in Malaysia. LPG is used as a fuel to produce heat for cooking, heating, drying and many other applications. There are various sizes of LPG cylinders that offered by the supplier, but most homes in Malaysia ...

  • Safe Operating Procedures SOP 15 Oxy Acetylene Cutting ...

    3. Slowly open the cylinder valves on each gas cylinder by half a turn (180°) only – for a faster emergency shutdown. 4. Screw in the regulator adjusting knobs slowly until the delivery pressure gauges are both correct. 5. Purge the oxygen gas line and check for constant gas flow. Re-adjust delivery pressure if necessary. 6.

  • Oxy-Fuel Cutting with Propylene

    For converting to propane or propylene type fuel gas, use the manufacturer's tip chart to select the right cutting or heating tip and set the fuel and oxygen gauges to what the tip chart dictates. The pressure settings might be very different from what you are accustomed to with acetylene.


    OPERATOR’S MANUAL FOR OXY-FUEL GAS CUT-TING, obtainable from AWS, Box 351040, Miami, FL 33135. D. CONCOA publication ADE 872, SAFE PRACTICES IN WELDING AND CUTTING. FOR MAXIMUM SAFETY USE FLASHBACK ARRESTORS Regulator Mounted Model-78 Resettable 801 0786 “B” Size for Oxygen 801 0789 “B” Size for Fuel Gas Regulator Mounted Model-53

  • Cutting Tips Operational & Performance Data

    Cutting Tips Operational & Performance Data Cutting Tips • Operational & Performance Data Tip Type: BTN for use with Natural Gas & Propane. BTMP for use with Propylene Gases (For use with MT200, MT300 Series Machine Cutting Torches). Length of Tip Speed Oxygen Fuel Cutting Oxygen Bevel Size IPM Pressure Pressure Pressure 1 1-1/2 2 2-1/2 3 3-1 ...

  • SOP Gas Cutting and Heating . | Industrial Gases ...

    A fuel-gas cylinder valve shall never be cracked near other welding work or near sparks, flame or other possible sources of ignition 6. Before a regulator is removed from a cylinder valve, the cylinder valve shall always be closed and the gas released from the regulator. 7. check all gas line connections for leakage by using soapy water 8.


    GCE Cutting and Welding Technologies (GCE CWT) is one of the global market leaders in gas welding, oxy-fuel cutting, brazing and heating processes. GCE CWT provides a full range of gas pressure regulators, arc welding, gas economizers, safety equipment and a comprehensive global range of torches specially designed to meet


    GAS CUTTING The common methods used in cutting metal are oxygas flame cutting, air carbon-arc cutting, and plasma-arc cutting. The method used depends on the ... propane…

  • Opening and Closing procedures on gas cutting equipment

    OPENING AND CLOSING PROCEDURE GAS CUTTING EQUIPMENT Check gas connections regularly for leaks, ONLY USE SOAPY WATER. Do not weld on gas cylinders. Keep gas bottles and hoses away from heat and flames. Do not drop or knock over gas cylinders. Do not oil gas connections. Turn off gas supplies when not in use.

  • Mobile Oxy-Acetylene/Propane: Before Use Visual …

    the fuel gas in use Light the torch. For acetylene increase fuel gas valve to reduce smoke if necessary Slowly open the oxygen torch valve until a clear sharply defined flame is achieved EMERGENCY PROCEDURE FOLLOWING FLASHBACK EXPLOSIONS & SUSTAINED BACK FIRE TURN OFF ONLY IF SAFE TO DO SO 1 Oxygen torch valve first 2 Fuel gas torch valve 3 ...

  • Safety in gas welding, cutting and similar processes

    Safety in gas welding, cutting and similar processes This leaflet is for people who use compressed gases for welding, hot cutting and similar processes. It describes the hazards associated with portable oxy/fuel gas equipment and the precautions for avoiding injury and damage to property. Introduction


    Apr 17, 2020 · the difference between acetylene vs lpg / propane as a cutting or heating fuel gas Acetylene is one of the industry-standard methods of cutting of all the Industrial Thermal Cutting Processes, but when Propane (LPG) was introduced to the market the whole thermal cutting process changed and the battle between Propane (LPG) and Acetylene was born.

  • Oxy-Propane-Cutting-What Settings?

    Jul 10, 2009 · I would use 5 to 10 # propane and 20 to 30 # oxy to cut 1/4" material. If you have a 1/2" of blue flame, that's way too much. You need to adjust your fuel/oxy ratio to make the flame hotter and it wil be closer to the tip, maybe a 1/4" of blue would be correct. It's true acet is quicker, but used properly propane isn't much slower.

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