First, according to the production method
Steel pipe according to the production method can be divided into two categories: seamless steel pipe and seam steel pipe, sewn steel pipe referred to as straight seam steel pipe.
1. Seamless steel pipe according to the production method can be divided into: hot-rolled seamless pipe, cold drawn tube, precision steel pipe, hot expansion pipe, cold spinning pipe and extrusion pipe.Steel Pipe
Seamless steel pipe made of high quality carbon steel or alloy steel, hot-rolled, cold-rolled (pull) of the points.
2. Welded pipe because of its welding process is divided into different types of welding pipe, welding (resistance welding) pipe and automatic arc welded pipe, because of its different forms of welding into straight seam welded pipe and spiral welded pipe, because of its end shape For the round pipe and shaped (square, flat, etc.) welded pipe.
Welded steel pipe is made of rolled steel pipe to seam or spiral seam welded together, in the manufacturing method, and is divided into low-pressure fluid transmission with welded steel pipe, spiral seam welded steel pipe, direct welded steel pipe, welded pipe. Seamless steel pipe can be used in various industries such as liquid pressure pipes and gas pipelines. Welding pipes can be used for water pipes, gas pipelines, heating pipes, electrical pipes and so on.
Second, according to material
Steel pipe according to pipe material (ie steel) can be divided into: carbon tube and alloy tube, stainless steel tube. Carbon tube can be divided into ordinary carbon steel pipe and high quality carbon structural pipe.
Alloy tube can be divided into: low alloy tube, alloy structure tube, high alloy tube, high strength tube. Bearing tube, heat-resistant acid-resistant stainless steel tube, precision alloy (such as Kovar alloy) tube and high temperature alloy pipe.Steel Pipe
Third, according to the coating characteristics
Steel pipe according to the surface coating characteristics can be divided into: black tube (not coated) and coated pipe. Plating pipe with galvanized pipe, aluminum pipe, chrome tube, aluminizing pipe and other alloy layer of steel pipe.
Coated tube with an outer coating tube, the coating tube, inside and outside the coating tube. Commonly used coatings are plastic, epoxy, coal tar epoxy and a variety of glass-based anti-corrosion coating material. Galvanized pipe is divided into KBG tube, JDG pipe, threaded pipe and so on.Steel Pipe