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Steel pipe material classification

Steel pipe material classification

Steel pipes can be divided into carbon pipes, alloy pipes, stainless steel pipes, etc. according to the pipe material (ie steel type). Carbon tubes can be divided into ordinary carbon steel tubes and high-quality carbon structural tubes. Alloy pipes can be divided into: low alloy pipes, alloy structural pipes, high alloy pipes, and high strength pipes. Bearing tubes, heat-resistant and acid-resistant stainless tubes, precision alloy (such as Kovar alloy) tubes and high-temperature alloy tubes, etc.

06

2023

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03

Temperature requirements for submerged arc welded straight seam steel pipes

Temperature requirements for submerged arc welded straight seam steel pipes

The welding process used for submerged arc welded straight seam steel pipe is submerged arc welding technology, which adopts filler welding and particle protection flux submerged arc. The diameter of production can reach 1500mm. LSAW is the English abbreviation of submerged arc welded straight seam steel pipe. The production process of submerged arc welded straight seam steel pipe includes JCOE forming technology and coil forming submerged arc welding technology. When the diameter is large, two steel plates may be used for rolling, which will form the phenomenon of double welds.

14

2023

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02

Reducing misjudgment of high-pressure boiler pipe eddy current testing

Reducing misjudgment of high-pressure boiler pipe eddy current testing

Reducing high-pressure boiler pipe eddy current testing misjudgment several key factors: (1) Coil eddy current testing and inspection center roller consistency in relation to the accuracy inspection rate high pressure boiler tube inspection system of the entire product, the coil center alignment requirements than the sample through holes circumferentially poor sensitivity ≤2dB, signal to noise ratio ≥ 8dB.

14

2023

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02

What are the advantages of argon arc welding

What are the advantages of argon arc welding

Argon reduces the burning loss of alloy elements and obtains denseand high-quality welded joints; The protection can isolate the adverse effects of oxygen, nitrogen and hydrogen in the air on arcand molten pool.

14

2023

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02

The most practical steel pipe welding technology

The most practical steel pipe welding technology

Submerged arc welding technology is ideal for important applications such as pipelines, pressure vessels and tanks, rail manufacturing and large buildings. There are the simplest form of monofilament, double-filament structure, tandem double-filament structure, and multi-filament structure.

14

2023

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02

Some FAQ about welded pipe welding

Some FAQ about welded pipe welding

1.What is welding power supply? Weldingpower supply refers to the equipment with electrical characteristicssuitable for welding in the electric welding machine and provides theelectric energy required for welding, which is called welding powersupply.

14

2023

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02

What is welding? What is the difference between ordinary welding

What is welding? What is the difference between ordinary welding

Gas welding is a welding method that uses the flame generated by themixed combustion of combustible gas and combustion supporting gas asthe heat source to melt the weldment and welding material and realizeatomic bonding. Electric welding uses electric energy to pressurize,heat, or both, with or without filler material to achieve atomicbonding of weldments.

16

2023

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01

Why welders should be steady accurate and ruthless

Why welders should be steady accurate and ruthless

Welding is like practicing martial arts. The first thing to do is to have as table chassis, that is, a stable "horse step". When the center of gravity is unstable, it is difficult to weld a good weld when shaking.

16

2023

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01

Advantages of argon electric pipeline welding compared with traditional welding

Advantages of argon electric pipeline welding compared with traditional welding

Inrecent years, ITU argon pipeline welding method has been widely usedin petrochemical industry, power construction and energy system.Different from the common arc extinguishing and priming process ofmanual arc welding, manual arc welding fills the cover surface.

16

2023

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01

Elimination of heat pipe in the band structure

Elimination of heat pipe in the band structure

Hot-rolled seamless steel tube or by heat expansion of seamless steel metallurgical examination, often found banded structure defects, severe achieve level 4-5. Different parts of the steel pipe sampling inspection results show that the circumferential surface of the pipe band structure is lighter, the bore surface band structure obviously seriously half the thickness of the band structure.

16

2023

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01

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We specialize in supply chain services for pipeline system projects in the oil and gas transportation, refining and chemical, marine and offshore, platforms, nuclear energy, and wind energy markets.

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