Application and Classification of Steel Pipe
steel pipe is steel with a hollow section that is much longer than its diameter or circumference. Steel pipe is not only used to transport fluids and powdery solids, exchange heat energy, manufacture machinery parts and containers, it is also an economic steel.
Classification of steel pipes
According to the section shape is divided into: round, square, rectangular and shaped steel pipe
According to the material is divided into: carbon structural steel pipe, low alloy structural steel pipe, alloy steel pipe and composite steel pipe, stainless steel, duplex steel
According to the use, it is divided into: transportation pipeline, engineering structure, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high pressure equipment with steel pipes and so on
According to the production process is divided into: seamless steel pipe and welded steel pipe.
Types and characteristics of steel pipes
1. Electrogalvanized welded pipe
Electrogalvanized steel pipe: The zinc layer is an electroplating layer, and the zinc layer is independently layered with the steel pipe matrix. The zinc layer is thin, and the zinc layer is simply attached to the steel tube matrix and easy to fall off. Therefore, its corrosion resistance is poor.
Sort
According to the welding process, it is divided into: arc welding pipe, high frequency or low frequency resistance welding pipe, gas welding pipe, furnace welding pipe, etc.
According to its welding form is divided into: straight seam welded pipe and spiral welded pipe.
According to the manufacturing method is divided into: hot dip galvanizing and electric galvanizing.
According to manufacturing standards are divided into: national standard, American standard, German standard, etc
Peculiarity
Due to poor corrosion resistance, it is prohibited to use in water and gas pipes.
Use
Galvanized pipe has a wide range of uses, in addition to the pipeline pipe for water, gas, oil and other general pressure liquids, it is also used as the oil well pipe in the petroleum industry, especially in the offshore oil field, the oil pipeline, the oil heater of the chemical coking equipment, the condensing cooler, the tube for the coal distillation and washing oil exchanger, and the pipe for the trestle pipe pile and the support frame of the mine tunnel.
2. Square welded pipe
The square welded pipe is referred to as the square pipe, which is a name for the square welded pipe, that is, the steel pipe with equal side length. It is made of strip steel by processing and rolling. Generally, the strip is unpacked, flat, crimped, welded to form a round tube, which is then rolled into a square tube and cut to the required length.
Sort
According to the material is divided into: stainless steel, duplex steel, carbon steel, low alloy steel, alloy steel, etc.
According to the process is divided into: arc welding pipe, resistance welding pipe (high frequency, low frequency), gas welding pipe, furnace welding pipe.
According to the use, it is divided into: decorative square pipe, machine tool equipment square pipe, mechanical industry square pipe, chemical square pipe, steel structure square pipe, shipbuilding square pipe, automobile square pipe, steel beam column square pipe, special purpose square pipe, etc.
According to manufacturing standards, it is divided into: national standard, American standard, European standard, Japanese standard, Russian standard, etc.
Use
Widely used in construction, machinery manufacturing, steel construction and other projects, shipbuilding, solar power generation bracket, steel structure engineering, power engineering, power plant, agriculture and chemical machinery, glass curtain wall, car chassis, airport, boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, Bridges, power station equipment, Lifting and transportation machinery and other high load welded structural parts.
3. Scaffold welded pipe
Scaffolding is a working platform set up in order to ensure the smooth progress of each construction process. Steel pipe scaffolding includes: shelf tube, pipe buckle, pipe hoop and bolt. Shelf tube is a kind of building pipe building shelf tube, mainly used to make construction site support, is a product rolled by hot rolled strip steel after process treatment.
Sort
According to the material is divided into: carbon steel, low alloy steel, alloy steel, etc.
According to the structural form, it is divided into: vertical pole scaffold, bridge scaffold, portal scaffold, suspended scaffold, hanging scaffold, lifting scaffold, climbing scaffold.
Features
Fewer parts, simple installation, easy to disassemble
Use
It is mainly used for construction steel, construction site supports, and safety protection supports. Its role is also more commonly seen in the transmission pipeline of natural gas, because the wall thickness of the pipeline is up to standard and the tensile strength and cold bending are more in line with the regulations.
4.Rectangular welded pipe
Rectangular welded pipe refers to the steel strip or steel plate bent and deformed into a rectangle after welding, the surface of the weld pipe.
Also known as flat tube, flat square tube or square flat tube. At the same time of bending and torsional strength, the weight is light, so it is widely used in the manufacture of mechanical parts and engineering structures.
Sort
According to the material is divided into: stainless steel, duplex steel, carbon steel, low alloy steel, alloy steel, etc.
According to the process: arc welding pipe, resistance welding pipe (high frequency, low frequency), gas welding pipe, furnace welding pipe.
According to manufacturing standards, it is divided into: national standard, American standard, Japanese standard, Russian standard, etc.
Peculiarity
At the same time of bending and torsional strength, the weight is light, so it is widely used in the manufacture of mechanical parts and engineering structures.
Use
Widely used in construction, machinery manufacturing, steel construction projects, shipbuilding, solar power generation bracket, steel structure engineering, power engineering, power plant, agriculture and chemical machinery, glass curtain wall, automobile chassis, airports and so on.
5. Spiral welded pipe
Spiral steel pipe is a spiral seam steel pipe made of strip steel coil plate, extruded by constant temperature and welded by submerged arc welding process. The spiral steel pipe will send the strip into the welding pipe unit, roll through the multi-channel roll, the strip gradually rolled up to form a circular tube blank with an open gap, adjust the pressure of the extrusion roll, so that the weld gap is controlled in 1-3mm, and the two ends of the welding joint are flush.
Sort
According to the material divided into: stainless steel, carbon steel, low alloy steel, alloy steel, etc.
According to the process: double-sided buried fox welding, single-side buried fox welding.
Divided by use: spiral steel pipe for fluid transportation, spiral steel pipe for piles.
According to the pressure capacity: general low-pressure fluid transport, pressure of the ordinary fluid transport pipeline.
According to manufacturing standards, it is divided into: national standard, American standard, Japanese standard, Russian standard, etc.
Peculiarity
Strong corrosion resistance and plasticity; At the same time, the spiral welded pipe is also one of the welding pipe equipment, its strength is generally higher than the straight seam welded pipe, can be used to produce a narrower billet welded pipe with a larger diameter, but also can use the same width of the billet to produce a different diameter welded pipe.
Use
Spiral welded pipe is mainly used in tap water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction. For liquid transport: water supply, drainage. For gas transport: gas, steam, liquefied petroleum gas. For structure: for piling pipe, as a bridge; Pier, road, building structure pipe, etc.
6. Hot-dip galvanized welded pipe
Hot dip galvanized pipe is the reaction of molten metal with iron matrix to produce alloy layer, so that the matrix and the coating are combined. Hot dip galvanizing is to first pickling the steel pipe, in order to remove the iron oxide on the surface of the steel pipe, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot dip plating tank.
Sort
According to the welding process, it is divided into: arc welding pipe, high frequency or low frequency resistance welding pipe, gas welding pipe, furnace welding pipe, etc.
According to its welding form is divided into: straight seam welded pipe and spiral welded pipe.
According to the manufacturing method is divided into: hot dip galvanizing and electric galvanizing.
According to manufacturing standards are divided into: national standard, American standard, German standard, etc.
Peculiarity
Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.
Use
Widely used in construction, machinery, coal mining, chemical industry, electric power, railway vehicles, automobile industry, highways, Bridges, containers, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery and other manufacturing industries.
7. Sanitary welded pipe
Welding stainless steel sanitary pipe referred to as sanitary welding pipe, commonly used steel or steel strip after the unit and mold crimped forming welded steel pipe. Welded sanitary steel pipe production process is simple, high production efficiency, variety specifications, but the general strength is lower than seamless steel pipe. Sanitary welded pipe has a variety of different strength-weight ratios to meet the requirements of various building structures. In addition, different levels of surface finish also provide a range of options for a variety of different building facilities to meet the actual needs.
Sort
According to welding technology: automatic welding and manual welding.
According to manufacturing standards, it is divided into: American ASTM, Japanese JIS, GB and DIN.
Peculiarity
The production process is simple, the production efficiency is high, the variety specifications are many.
Use
Sanitary grade steel pipe refers to the sanitary grade pipe fittings used in places with high requirements for hygiene in pharmaceutical, food and other industries. Applicable to dairy, food, beer, beverage, pharmaceutical, cosmetics and other industrial fields. The products are used in many fields of industry and civil use.
8. General welded pipe
General welding pipe to transport low pressure fluid. Made of Q195A, Q215A, Q235A steel. It can also be made of other soft steels that are easy to weld. Steel pipe to carry out water pressure, bending, flattening and other experiments, there are certain requirements for surface quality, usually the delivery length is 4-10m, or the requirement of fixed size (or double size) delivery.
Sort
According to the material is divided into: stainless steel, double phase steel, low alloy steel, etc.
According to the shape is divided into: ellipse, triangle, L shape, star anise, mushroom type, etc.
According to manufacturing standards, it is divided into: American standard, German standard, Japanese standard, Russian standard, ISO and so on.
According to the connection method is divided into: welded type, clamp type, threaded connection.
Peculiarity
The production process is simple, the production efficiency is high, the cost is low, the development is fast.
Use
Widely used in water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction and other fields.
The above is the common 8 types of steel pipes, I hope to help you. Glory Rail can provide different kinds of steel pipes for industry, welcome to contact.