Steel Pipe (steel pipe production technology development began on a bicycle manufacturing industry rise, the 19th century early oil development, during the two world wars ships, boilers, aircraft manufacturing, after the Second World War thermal power boiler manufacturing, chemical industry and petroleum natural gas drilling and transportation, effectively promote the development of steel pipe industry in variety, yield and quality.
Steel pipe is not only used for conveying fluid and powder solid, exchange heat energy, manufacturing machinery parts and containers, it is a kind of economic steel. The steel pipe is used to make the structure of the building structure, the support and the mechanical support, which can reduce the weight and save the metal from 20 to 40%, and can realize the mechanization construction of the factory. The construction of the highway bridge with the steel pipe can not only save the steel, simplify the construction, but also greatly reduce the area of the coating protection layer, save the cost of investment and maintenance.
Photo of our steel pipe:
According to the production method
1. Seamless steel pipe according to the production method can be divided into: hot-rolled seamless tube, cold drawn tube, precision steel tube, thermal expansion tubes, cold spinning tube and pipe extrusion.
Seamless steel pipe made of high quality carbon steel or alloy steel, hot-rolled, cold-rolled (drawn) branch.
Bundles of steel tubes
Bundles of steel tubes
2. Welded steel pipe for the different welding process is divided into the furnace pipe, welding (ERW) pipes and automatic arc welding, because of the different welding form is divided into two kinds of longitudinal and spiral welded pipe, due to the shape of the end and circular welded pipe and shaped (square, flat) welded pipe.
Welded steel pipe is rolled into a tube shaped steel plate to butt or spiral seam welding and, in the manufacturing method, voltage liquid transportation by welding steel pipe, spiral seam welded steel pipe and directly roll welded steel pipe, welded steel pipe. Seamless steel pipe can be used in a variety of industries, such as liquid pressure pipe and gas pipeline. Welding pipe can be used for water pipelines, gas pipelines, heating pipes, electrical appliances, etc..
According to the material (i.e. steel pipe steel) can be divided into: carbon tubes and alloy tube, stainless steel tube etc..
Carbon pipe can be divided into ordinary Carbon Steel Pipe and high quality carbon structure pipe.
The alloy tube can be divided into: low alloy pipe, alloy pipe structure, high alloy tube, high strength tube. Bearing tube, heat resistant acid resistant stainless steel pipe, precision alloy (such as can be cut alloy) tube and high temperature alloy tube, etc..
Classification by connection
According to the pipe end connection can be divided into: light pipe (pipe end without thread) and the car wire pipe (Guan Duan with a thread).
The wire pipe is divided into: ordinary car wire pipe and pipe end upset car wire pipe.
Thick wire pipe can also be divided into: plus thick (with external thread), inside the thick (with the inside of the thread) and inside and outside the thick (with internal and external threads) and other places of the car wire pipe.
Threading pipe can also be divided into: ordinary cylindrical or conical thread and special thread, such as the wire pipe.
In addition, according to the needs of users, the car is generally equipped with pipe connector delivery.
According to the coating characteristics
According to the characteristics of surface coated steel pipe can be divided into: Clarinet (not coated) and coating tube.
The coating pipe has galvanized pipe, aluminum, chrome plated tube, alumetized tubes and other alloy layer of steel pipe.
The coating pipe is coated with an outer coating pipe, an inner coating pipe, an inner and an outer coating pipe. Commonly used coatings are plastic, epoxy, coal tar epoxy resin as well as a variety of glass type of anti-corrosion coating materials. Galvanized pipe is divided into KBG pipe, JDG pipe, screw pipe, etc.