2011 Steel Pipe Classification Encyclopedia: Laser Digital Detector for Guide Rail Laser Digital Detector for Straightness and Torsion Resistance of Elevator Guide Rail Detector for Elevator Guide Rail Geometric State Laser Detector for Elevator Guide Rail Coplanarity Laser Corrector for Elevator Guide Rail Installation Laser Detector for Elevator Guide Rail Verticality Laser Detector for Coplanarity of Distance Between Guide Rail for OTIS Elevators, ThyssenKrupp Elevators, Sch****** Elevators, KONE Elevators, Mitsubishi Elevators, Fujitec Elevators, Hitachi Elevators, Toshiba Elevators, Fuji Elevators, Express Elevators, Sigma Elevators, LG Elevators, Hyundai Elevators, BLT Elevators, CANNY Elevators, SJEC Elevators, KOYO Elevators Laser Digital Detector for Guide Rail, Detector for Elevator Guide Rail, Laser Detector for Elevator Guide Rail, Laser Corrector for Elevator Guide Rail CEP Elevator Products ( China ) Co., Ltd. , https://www.zjelevatordoorsystem.com
1, according to the production method classification (1) seamless steel pipe - hot rolled pipe, cold rolled pipe, cold drawn pipe, extruded pipe, pipe jacking (2) welded pipe (a) by process - arc welded pipe, resistance welded pipe ( High Frequency, Low Frequency), Welded Pipe, Furnace Welded Pipe (b) Welded Joints - Straight Welded Pipes, Spiral Welded Pipes
2. Classification according to section shape (1) Simple section steel pipe - round steel pipe, square steel pipe, oval steel pipe, triangular steel pipe, hexagonal steel pipe, diamond steel pipe, octagonal steel pipe, semi-circular steel ball, other (2) complex Section steel pipe--equilateral hexagonal steel pipe, five-floating plum-shaped steel pipe, double convex steel pipe, double concave steel pipe, melon-shaped steel pipe, conical steel pipe, corrugated steel pipe, steel case, other
3, classified by wall thickness - thin-walled steel pipe, thick-walled steel pipe
4. According to the use classification - Pipes for pipes, steel tubes for thermal equipment, steel pipes for machinery industry, steel pipes for petroleum, geological drilling, steel pipes for containers, steel pipes for chemical industry, special-purpose steel pipes, and others
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