Seamless steel pipe manufacturers are providing their product in every corner of the world. Seamless steel pipe can be divided into hot-rolling seamless steel pipe and cold-drawing seamless steel pipe based on the differences of manufacturing process.Seamless pipes are great to use where resistance to corrosion, strength and product life. These things are crucial to pipes. More so, with the ultra-high strength and corrosion resistant properties, the seamless steel pipes make it perfect for gas and old industry, chemical and other processing industries, pipelines, steam boilers, installations with high pressure and supercritical steam.Hot-rolling seamless pipe is generally produced in the automatic rolling machine. After inspection and removal of surface defects, the solid tube is cut into required length, end to end in the perforated tube surface centering, and then sent to the furnace heating, piercing the piercer. While continuing to rotate the perforation and forward, under the action of the roll and the head of the tube gradually formed an internal cavity, said capillary. Continue rolling and then sent to the automatic rolling machine. Finally, after all the Leveling machine leveling the wall thickness and the sizing mill sizing, to meet the specifications.The solid tube into a hollow capillary; we can understand stereotypes, both the rolling section as an annular; their equipment is called puncher.Usually, Cold drawing is carried out on 0.5 ~ 100T single chain or double chain drawing machine. Cold rolling is performed below the recrystallization temperature, and hot rolling is rolling at a temperature above the recrystallization conducted. Cold-drawing seamless steel pipe is often small diameter while hot-rolling seamless steel pipe is often a large diameter.
Steel tube is used as a structural element in buildings, bridges and other structures, and in a wide variety of manufactured products. It’s produced in round, square and rectangular shapes in a broad range of sizes and gauges.RECTANGULAR TUBE has many benefits: aesthetic appeal, high strength-to-weight ratios, uniform strength, cost effectiveness and recyclability. The advantages for designers, specifies, fabricators and end users are outlined on theRECTANGULAR TUBING has greater strength-to-weight ratios. So, with RECTANGULAR TUBE you need less steel, by weight, to do the job. And less weight equals less costExcellent compression and support characteristics and superior resistance make RECTANGULAR TUBES particularly well suited to all types of column applicationsRECTANGULAR STEEL TUBE is made from steel, one of the world’s most recyclable and recycled materialsTorsional strength makes STEEL RECTANGULAR TUBE an excellent choice for bear resistant and consistent. RECTANGULAR TUBE is fire resistant and does not warp, twist, split, swell or shrink. It resists dry rot and mildew, termites and carpenter ants. For increased fire resistance, the exterior of the product may be sprayed with a fire retardant material. The interior can be filled with concrete. TUBE RECTANGULAR can be readily bent, formed, punched, and drilled. New and improved methods to fasten RECTANGULAR TUBING to itself or to other materials are making its use simpler and fabrication faster.
Welded pipe is a common seen pipe which usually be used on fluid conveyance. Generally, it is defined to as the large diameter solder pipe, in accordance with the welding as a way for tube, the solder steel pipe consist spiral pipe and straight seam welding tube.Based on the application, it can be divided into general welded pipe, galvanized welded tube, oxygen blowing metric pipe, welded tubes, wire casing, roller tube, deep well pump tubes, auto tube, transformer, electric soldering thin wall pipe, welded pipe and spiral welded tube.Spiral welded pipe is the low carbon structural steel and low alloy structural steel strip according to certain helix Angle rolled into a tube billet, and then solder pipe joints made up, it can use a narrow strip in the production of large diameter steel tube, straight seam solder pipe is hot rolled plate after molding machine molding, roll deformation of steel coil for round cylinder, using frequent current skin effect and proximity effect or flux layer burning under the arc soldering, the tube billet is heated to melt, and fusion under certain extrusion effect, after the final cooling forming.Welded tube is made of steel plate or steel strip after crimp forming, and then after welding. Divided into the form of the weld seam welded tube and spiral welded pipe, straight seam steel tube forming technique of common UOE forming process, JCOE steel pipe forming process.
Q235 is not only the material used for the production of galvanized pipe rack, but also the only standard to verify the quality of pipe rack, as well as test tube rack quality. Q235 includes carbon C: ≤0.20% Si Si: ≤0.35%, manganese Mn: 0.3 ~ 0.7%, sulfur S: ≤0.045%, phosphorus P: ≤0.045%, chromium Cr: to allow the residual content of ≤0.30%, Ni: to allow the residual content of ≤0.30%, copper Cu: to allow the residual content of ≤0.30%, Q235B a certain elongation, strength , good toughness, easy stamping and welding, widely used in the manufacture of mechanical parts in general. Mainly used in construction, the bridge engineering and high quality welded structure.Q235 Material galvanized pipeTherefore, the use of materials Q235 galvanized pipe, rack tube material is divided according to:1, a single standard steel pipe rack: it is a steel pipe with the same specifications (example: scaffolding fasteners such as:. Ф48 × 3.5 of welded steel pipe)2, a variety of specifications of steel combined into a scaffold tube: it is constituted by a combination of two or more of the above steel pipes of different sizes (eg: frame scaffold)3, based on steel scaffolding: its meaning can be understood in steel that is dominated by other types of steel scaffolding constructed auxiliary pieces.