What is the difference between stainless steel welded pipe and seamless pipe？

　　(1) Cold drawing, extrusion and cold rolling stainless steel seamless pipe

　　(2) Stainless steel welded pipe (a) is divided into gas shielded welded pipe, arc welded pipe and resistance welded pipe (high frequency and low frequency). (b) According to the weld, it can be divided into straight welded pipe and spiral welded pipe.

　　2. Classification by section shape

　　(1) Stainless steel round steel pipe: the round steel pipe can be used for pipeline, thermal equipment, mechanical industry, petroleum geological drilling, container, chemical industry and special purposes.

　　(2) Stainless steel rectangular tube: a hollow long steel, also known as flat tube, square tube or square flat tube

　　(3) Stainless steel special-shaped pipe: Generally speaking, it has larger inertia moment and section modulus, larger bending and torsion resistance, which can greatly reduce the structure weight and save steel.

　　Three. Classification by wall thickness - thin wall stainless steel pipe, thick wall stainless steel pipe

　　Four. Classification by use

　　(1) Civil pipes are divided into round pipes, rectangular pipes and flower pipes, which are generally used in decoration, architecture, structure and other aspects;

　　(2) Industrial pipeline: steel pipe for industrial pipeline, steel pipe for general pipeline (drinking water pipe), mechanical structure / fluid transmission pipe, boiler heat exchange pipe, food and health pipe, etc., which are generally used in petrochemical industry, papermaking, nuclear energy, food and beverage, medicine and other industrial fields, with high demand for fluid medium.

　　Hebei Shengtian group Ruiguan Pipe Co., Ltd. is a professional manufacturer of seamless steel pipes. Our factory is located in Cangzhou City, Hebei Province, China, only 100 kilometers from Tianjin port. Our SAE1020 Round Hollow Mild Steel Seamless Structural Pipe is of high quality and has been highly praised by our customers.

　　Our main production equipment includes: 180 automatic tube rolling units, 4 sets of mills for hot rolling and piercing, 16 interactive double rod cold drawing machines, multiple automatic rotating pointers, straightening machines, anhydrous annealing furnaces and auxiliary production equipment for surface pickling and coating, etc. The physical and chemical laboratory can carry out various physical and chemical tests on steel pipes. The main testing equipment includes eddy current flaw detector, leakage fault detector, ultrasonic flaw detector, spectrum analyzer, etc. the testing equipment is complete, which can meet the requirements of steel pipe standard test and various steel pipe standard test and inspection.