The difference between the manufacturing process: galvanized steel and seamless steel pipe two kinds of areas, galvanized steel refers to a galvanized surface, there may be welded pipe, seamless pipe may be bread-type seamless steel tubes, seamless is refers to the steel manufacturing process, and seamless welding points. These corrosion resistant galvanized pipe, seamless steel pipe can withstand higher pressures. Because zinc galvanized steel protection, not easy to rust, galvanized steel seamless pipe lighter than if it is used in the balcony, it is best to use light galvanized pipe, seamless steel too with less suitable for balcony Because seamless steel pipe wall thickness, the natural weight is heavy, and expensive than galvanized steel seamless steel costs to be high, there is a very durable galvanized steel, far more than the useful life of seamless steel tubes. If the quality, the use of twenty years should not be a problem, of course, have to do the welding and painting, not to affect the life of galvanized steel. Uses difference: galvanized steel in general is used to make fences, fence, fence, balcony fence. Widely used in municipal engineering, roads, factories, schools, development zones, gardens, squares, residential and other places. Hot-rolled (extruded seamless pipe) production process round tube → heating → perforation → three-roll rolling, rolling or extrusion → → set off pipe diameter (or reducing) → cooling → straightening → hydrostatic test ( or testing) → mark → storage seamless steel ingot is made of perforated or solid through the capillary tube, and then by the hot-rolled, cold-rolled or cold call is made. Seamless steel pipe wall thickness specifications mm diameter * number indicates. Hot and cold rolled seamless steel pipe points (written) seamless steel categories. Hot-rolled seamless steel pipe sub-normal, low, medium pressure boiler pipe, high pressure boiler pipe, steel pipe, stainless steel pipe, oil cracking pipe, steel and other steel and other geological. Hot-rolled seamless pipe diameter is generally greater than 32mm, wall thickness 2.5-200mm triangle seamless steel tubes, cold-rolled seamless steel pipe at the path can go to 6mm, wall thickness can be 0.25mm oval seamless steel tubes, thin-walled tube diameter can to 5mm thickness less than 0.25mm, cold than hot-rolled high dimensional accuracy. Seamless is 10,20,30,35,45 and other high quality carbon steel 16Mn, 5MnV low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2,40MnB such as structural steel hot-rolled or cold-rolled steel. 10,20 and other low-carbon steel seamless pipe is mainly used for fluid pipes. Seamless 45,40Cr etc. made of carbon steel used to manufacture mechanical parts, such as cars, tractors and the force components. General seamless steel pipes to ensure the strength and flattening test. Hot-rolled steel hot-rolled state or heat treatment delivery; Hot, by definition, high temperature rolling, so the deformation resistance, can achieve a large deformation. The steel rolling, for example, generally about 230mm seamless steel slab thickness, and after roughing and finishing, final thickness of 1 ~ 20mm. Meanwhile, due to the small plate thickness ratio, dimensional accuracy requirements are relatively low, flatness problem is not prone to control crown based. Shandong Liaocheng Polygram steel pipe manufacturing company; is a professional production of cold drawn steel, hot-rolled steel in the modern enterprise, the company is located in Liaocheng City, Shandong Province Economic Development Zone Industrial Park, north of Jeju Museum Highway, the company has large and small hot-rolled cold-rolled seamless steel pipe seamless steel pipe mill and 16 production lines, annealing furnace three, drawing units, mainly produce diameter 8mm-121mm wall thickness of 1mm-30mm of cold drawn steel, hot-rolled unit, the main production 89mm- 426mm thickness of 5mm-70mm hot-rolled seamless steel pipe, seamless steel pipe production company are GB GB / T8162 structural tubes, GB / T8163 fluid pipe, GB / T3087 low pressure boiler tubes, GB / T5310 high-pressure boiler tubes, GB / fertilizer tube T6479, GB / T9948 petroleum cracking tube performance standards. Production materials are: 10 #, 20 #, 35 #, 45 #, 16Mn, 27SiMn, CrMo910,15CrMo, 35CrMo, etc., can not say more than the lowest price of the lowest dare, I will discount the price, wholesale and retail ways, provide you with fast quality service, welcome new and old customers to negotiate, Power Conference. Our products are widely used in electric power, chemical, pharmaceutical, oil refining, natural gas, shipbuilding, metallurgy, mining, heating, water treatment, environmental protection, piling, steel and many other industries. Six cylindrical inner seamless steel pipe seamless steel pipe _ outside the Octagon (certified) _ Liaocheng seamless steel pipe provided by Polygram Steel Pipe Manufacturing Co., Ltd .. Shandong Liaocheng Polygram Pipe Manufacturing Co. (www.lcbljgg.com) (www.lcbljgg.com) (www.sdlcblj.com) (www.bljggzz.com) Shandong Liaocheng, wire, pipe, plate manufacturing equipment leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Polygram steel leader with the staff warmly welcome all inquiries negotiations to create Polygram steel a better future.