Characteristics of welding construction in petroleum and petrochemical engineering

1. Scope of construction of petroleum and petrochemical engineering
Almost all petroleum and petrochemical construction projects are large and super-large projects.Professional scope: oil and gas treatment station, pipeline, storage tank, container, device, equipment, steel structure, all kinds of supporting facilities (water supply, power supply, communication, road, fire protection, environmental protection, etc.) and other system engineering.
Industry fields: oil and gas field surface engineering construction (onshore), oil and gas storage and transportation engineering construction (storage, long distance pipeline), offshore oil engineering construction and refining and chemical engineering construction, etc.
Metal materials: mainly low carbon steel and low alloy steel, as well as high-strength steel, heat-resistant steel, stainless steel, aluminum alloy, heat-resistant alloy, composite metal materials, etc

2. Welding construction characteristics
Welding is one of the most important construction techniques in the construction of petroleum and petrochemical engineering. Large The scale of project investment and the amount of steel, and the amount of welding engineering.
The scale and standardization of engineering construction, and the standardization of welding construction. Diversified material application, diverse welding process is diverse, and high standard requirements. It is relatively harsh for performance requirements of welding equipment and welding materials in on-site construction outside the room (field and moving operation site

3. Welding market demand characteristics
(1) Electrode arc welding is the most commonly used welding method, and the demand for electrode arc welding equipment and electrodes is large. It is widely used in system engineering construction of various oil and gas stations, process pipelines, steel structures, equipment and installation.
(2) Argon tungsten arc welding is also commonly used method, mainly for the bottom welding of important pipelines and the welding of non-ferrous metals.
(3) submerged arc automatic welding and melting gas protection (self-protection) semi-automatic and automatic welding applications are increasing, and the market prospect is broad. It is mainly used in large-scale storage tank welding, long-distance pipeline welding, on-site welding of refining and chemical equipment and process installation and prefabrication production (modular production and assembly construction), and has occupied a major position.
(4) The demand for conventional welding equipment is large, and the market potential of mobile automatic welding equipment adapted to the field is large. The welding power supply used is mainly arc welding generator and arc welding rectifier power supply (silicon rectifier or inverter).
(5) Low carbon steel and low alloy steel welding materials are in great demand.
(6) The application of special material welding and special welding process methods is increasing, and there is an urgent need for key welding technologies.

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This article is excerpted from the wechat public number "Welder manual" a short note.

Company product profile:
Luoyang Golden Egret Geotools Co.,Ltd. founded in2012,is wholly-owned by iisted company XiamenTungsten Co.,Ltd (XTC).As a backbone cemented carbideenterprise of XTC with registered capital of 1.05billionRMB and first investment of ibillion RMB,GEOTOOLSspecializes in producing and selling high quality tungstenpowder,Tungsten Carbide Powder, carbide anvils,carbideroll rings,carbidesubstrates for PDC bit,mining drill bitsand hard facing materials.
Based on decades of production experience of WC based hard-facing materials, world-class technologies and modernautomatic production lines, GEOTOOLS dedicates into development and production of high quality hard facing materialwith high hardness, best wear resistance, best corrosion resistance and application solutions.
XTC brand Thermal Spray Powder mainly includes Wc- based & Cr3C2-based. The WC coating has high hardnessdurable wear resistance, abrasion resistance, corrosion resistance and high bonding strength, mainly used in oil &gas valves, mining tools, injection screws and printing machinery parts, The Cr3c2 coating has higher thermalstability and anti-oxidation, which can be used in a high temperature and corrosive environment, e.g. inner- wall ogas pipeline and pump.
With high degree of sphericity & excellent alloy organization, cemented carbide pellet is mainly used in weldingas an additive material of PTA Powder and tubular weldina rod to improve the wear resistance of the work pieces.
GEOTOOLS provides mono-crvstalline WC-based, coarse-arain wC-based, casting WC-based and other kinds ofPTA powder. With the high quality material, most advanced production lines and word-class technologies, the PTAcoating has high hardness, durable wear resistance, high welding velocity, and low porosity characteristics. Mainlyused in Mining, Oil driling, agriculture machinery, and machining for welding and repairing.
The hard phase of GEOTOOLS tube rods is tunasten or its products with high wear resistance. Tubular welding rods aresuitable for flame brazing and widely used for surface strengthen for oil and mining drill bits.