Meizhou 114 the * 4.516MnDG low-temperature tube tends to be used in what areas? Welded steel pipe What are the advantages? 
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 The low pressure liquid delivery straight seam welded steel pipe (GB/T3092-2006), also known as general welded pipe, commonly known as the clarinet. Used for conveying water, gas, air, oil and heating steam low pressure fluid, and for other purposes welded steel pipe. The steel pipe connected to the wall thickness is divided into ordinary steel and thicker steel; take over the side into the form without the steel pipe (fluorescent tubes) and with a steel pipe. Specifications of the tubes with nominal diameter (mm) said that the nominal diameter is the diameter of the approximation. The habit usually expressed in inches, such as 11/2 and so on. The low pressure fluid welded steel unless used directly in the transmission fluid, but also a large number used as a low pressure fluid of the original tube of galvanized welded steel pipe. 
 (2) the low pressure fluid galvanized straight seam welded steel pipe (GB/T3091-2006), also known as galvanized welded steel pipe, commonly known as white tube. Is used for conveying water, gas, air, oil and heating steam, heated and other general low pressure fluid or other uses hot-dip galvanized welding (furnace welding or welded) steel tubes. Steel pipe connected to the wall thickness is divided into ordinary galvanized steel and thicker galvanized steel; take over the side into the form of threaded galvanized steel pipe and threaded galvanized steel pipe. Steel Specifications Nominal Diameter (mm) said that the nominal diameter is the diameter of the approximation. The habit usually expressed in inches, such as 11/2 and so on. 
 Ordinary carbon steel wire casing (GB3640-88) industrial and civil construction, installation of machinery and equipment, electrical installation work top for the protection of wire and the steel pipe. 
 4 straight seam welded steel pipe (YB242-63) is parallel to the longitudinal weld and steel pipe steel pipe. Usually divided into metric welded steel pipe, welding thin-walled tube, transformer cooling tubing. 


 114 * 4.5 How to theoretical calculation of thermal expansion seamless steel pipe weight per m 
 The thermal expansion of seamless steel pipe in meters: the original pipe diameter × 1.04 × length of the original tube after the expansion of the diameter ÷ m: length × (diameter ÷ after the expansion of the original pipe diameter ÷ 1.04) speed: 100 000 ÷ (original diameter - thickness × thickness) thickness : expansion of the thickness (1 times) = thick tube thickness ... to expand after a few meters: the original tube after the expansion of the diameter ÷ diameter × 1.04 × length 
 The original tube meters: expansion length × (diameter ÷ original tube diameter ÷ 1.04) 
 Speed ??thickness: 100 000 ÷ (original diameter - thickness × thickness) 
 Thick thickness: expansion of the thickness (1 times) = the thickness of the thick tube × 0.92 (2 times) = original thickness * 0.84 
 Mouth outer diameter: caliber = core head size after expansion + diffusion thickness × 2 +1 lead powder 
 Expansion of the core head size: diameter - 2 wall thickness + reduction wall 
 114 * 4.5 large-diameter seamless steel pipe & 114 * 4.5 large diameter alloy seamless steel pipe @ large diameter carbon steel seamless pipe @ 114 * 4.5 large diameter of the original tube 
 Our products are mainly for the field of nuclear power, thermal power, petroleum, petrochemical, coal chemical energy equipment, with the production of diameter φ400 ~ 1200mm, wall thickness 16 ~ 200mm, length 4 ~ 12m special steel pipes of large diameter capacity, a single steel tube weight up to 25 tons. The main products are high-pressure boiler pipe, large diameter pipe for petroleum and petrochemical, high-pressure gas cylinders and large diameter pipe, the military large-diameter tube, the alloy structure of large diameter pipe. Solve the field of domestic energy equipment and large-scale equipment industry the demand for special pipes of large diameter thick wall localization and import substitution. 
 Independent innovation of domestic first extrusion, forging rolling, cross rolling were optimized combination of production processes, excellent technical equipment, process layout is reasonable. The main equipments are various types of industrial furnaces, hydraulic press, pulling machine, cross rolling Kong machine, machine, sizing machine, straightening machine, pipe cutting machine, a large turning and boring, internal and external grinding machine such as a large number of advanced heavy-duty production equipment for improve product quality, to meet market needs, enhance competitiveness has a strong adaptability. 
 The company's quality assurance system, has over 3000 square meters of physical and chemical test center, equipped with hydrostatic testing machine, nondestructive testing machine (ultrasonic eddy current thickness measurement detection machine), computer control of high temperature electronic universal testing machine, high temperature endurance strength test machine, high and persistent creep test machine, computer control electro-hydraulic servo universal testing machine, automatic impact testing machine, direct reading spectrometer, carbon and sulfur analyzer, metallurgical microscope (Zeiss) and other advanced inspection equipment, scientific research and quality detection means complete. 
 The face of new opportunities for development, the company of people-oriented employment mechanism of eclectic "quality first, continuous improvement, customer satisfaction" quality policy, adhering to the honest, common management philosophy, innovation, keep making progress, efforts to create the domestic first-class, international leader in large-diameter thick-walled seamless steel pipe production base. 
 Company is willing to cooperate sincerely with friends at home and abroad to achieve win-win and development. 

 114 * 4.5 seamless steel pipe price 
 2 transmission fluid steel pipe Tianjin 25 × 2 20 # 32 Negotiable 
 Fluid seamless steel pipe Tianjin 25 × 2.5 20 # 32 Negotiable 
 Alloy seamless JFE finishing 25 × 4 T91/P91 0.08 Negotiable 
 (5) high-pressure alloy pipe JFE finishing 25 × 7 T91/P91 1.3 Negotiable 
 Petroleum cracking tube Tianjin 25 x 5 20 # 100 Negotiable 
 Alloy Steel Tianjin, 25 × 3 12Cr1MoVG 0.01 Negotiable 
 Small diameter seamless steel pipe Liaocheng 27 * 520 # 100 t negotiable