Seamless Steel Tube Outside 20mm Inner Diameter 5 Iron Tube Outside 16 Inside 12 Wall

Seamless Steel Tube Outside 10 12 13 14 15 16 18 20 Mm Inner Diameter 5 Iron Tube Outside 16 Inside 12 Wall

By production method
Steel pipe can be divided into two categories according to the production method: seamless steel pipe and welded steel pipe, welded steel pipe is referred to as welded pipe.
1. Seamless steel pipe can be divided into: hot rolled seamless pipe, cold drawn pipe, precision steel pipe, hot expansion pipe, cold spinning pipe and extrusion pipe, etc.
Bundles of steel pipes
Bundles of steel pipes
Seamless steel tube is made of high quality carbon steel or alloy steel, hot rolled, cold rolled (drawn) points.
2. Welded steel pipe is divided into furnace welding pipe, electric welding (resistance welding) pipe and automatic arc welding pipe because of its different welding form is divided into straight seam welding pipe and spiral welding pipe, because of its end shape is divided into round welding pipe and shaped (square, flat, etc.) welding pipe.
Welded steel pipe is made of rolled tubular steel plate welded to the seam or spiral seam. In terms of manufacturing methods, it can be divided into welding steel pipe for low-pressure fluid transportation, spiral seam welding steel pipe, direct coil welding steel pipe, electric welding pipe and so on. Seamless steel pipe can be used in various industries, such as liquid pressure pipe and gas pipe. Welded pipes can be used for water pipelines, gas pipelines, heating pipes, electrical pipes and so on.
The material classification
Steel pipe can be divided into carbon pipe, alloy pipe, stainless steel pipe and so on.
Carbon pipe can be divided into ordinary carbon steel pipe and high quality carbon structure pipe.
Alloy tube can be divided into: low alloy tube, alloy structure tube, high alloy tube, high strength tube. Bearing tube, heat and acid resistant stainless tube, precision alloy (such as cutting alloy) tube and high temperature alloy tube, etc.
Connection type classification
Steel pipe can be divided into light pipe (pipe end without thread) and wire pipe (pipe end with thread) according to the connection mode of pipe end.
Wire tube is divided into: ordinary wire tube and tube end thickened wire tube.
Thickening wire pipe can also be divided into: outer thickening (with external thread), inner thickening (with internal thread) and inner and outer thickening (with internal and external thread) and other ground wire pipe.
If the thread type can also be divided into: ordinary cylindrical or conical thread and special thread and other ground thread tube.
In addition, according to the needs of users, wire pipes are generally equipped with pipe joints delivery.
Classification of plating characteristics
According to the surface coating characteristics of steel tube can be divided into: black tube (not coated) and coated tube.
Galvanized pipe, aluminum pipe, chromium pipe, aluminized pipe and other alloy layer of steel pipe.
Coating pipe has outer coating pipe, inner coating pipe, inner and outer coating pipe. Commonly used coatings are plastic, epoxy resin, coal tar epoxy resin and a variety of glass anti-corrosion coating materials.
Galvanized pipe is divided into: KBG pipe, JDG pipe, threaded pipe and so on.