Hebei small diameter straight seam pipe production and processing

Small diameter straight seam welded steel pipe, also known as small diameter welded steel pipe, is made of steel sheet or strip after crimp forming welding of steel pipe. Since the 1930 s, with the rapid development of high quality strip steel rolling production and the progress of welding and inspection technology, constantly improve the weld quality, increasing varieties of small diameter welding pipe specifications, and in the field of more and more instead of seamless steel tube. In the form of welded steel pipe according to the weld seam welded pipe and spiral welded pipe. Small diameter welding pipe is made of billet is steel plate or strip, because of the different welding process is divided into furnace welded pipe, welding ( Resistance welding) Tube and automatic arc welding tube. Because of its welding form of different can be divided into straight seam welded pipe and spiral welded pipe. Because of its shape is divided into circular welded pipe and alien ( Square, flat, etc. ) Welded pipe. Small diameter straight seam welded steel pipe according to the shape can be divided into round, square or shaped tube, etc. The main standards of GB/T3091 - 2008年,GB / T9711 - 2008. Straight seam welded pipe domestic commonly used material is Q235A, Q235B, 0 cr13, 1 cr17 cr18ni11nb, 00 cr18ni9 cr19ni11, 1, 0, 16 mn, 20 #, Q345, L245, L290, X42, X46, X70 and X80. One X42 X46 X56, X80 material such as API standard material, not pipe commonly used materials in our country. Straight seam welding steel plate coil, plate, decorative pattern plate ( Volume) , boiler plate, container plate, alloy plate, shipbuilding plate, pickling board ( Volume) , silicon steel sheet, strip, manufacture ( Volume) , hot rolled plate ( Volume) , other board ( Volume) Material. Profile: deformed steel, steel, cold bending steel, channel steel, flat steel, Angle steel, i-steel, square steel, h-beam, other profile steel tubes, spiral pipe, seamless tube, rectangular tube, galvanized pipe, alloy pipe, welded pipe, tubing and other alloy structual: carbon steel, and steel, tool steel, bearing steel, cutting steel, spring steel, die steel, gear steel, alloy steel, cold drawn steel wire, high quality, cold drawn steel, cold pier steel, heat-resistant steel, Hou Gang resistant, corrosion resistant steel. Small diameter straight seam steel pipe welding method, welding steel pipe clean up the first joint of the oil, paint, water, rust, etc. , and then according to the open groove wall thickness, thick, thin, and then open a few bigger is smaller ( Angle grinder) , and then to product aperture, usually 1 - the diameter of the rod or wire 1. 5 times, if the groove carelessly up words may be appropriately smaller. Solid welding points at least three, four general work better. Welding should be half and half when welding, the best starting point for more than the bottom point a centimeter or so, so good joint on the opposite side. If the wall thickness, steel should be layered for at least two layers, the first layer of the whole circle after welding can weld the second layer. Small diameter straight seam welded steel pipe process: the circular tube billet - heat - perforated - three-roll skew rolling, rolling or extrusion - pipe - sizing ( Or reducing) - cooling - straightening and hydrostatic test ( Or testing) -> tag weld steel tube wall thickness is not more than 12. 5 mm, the weld residual high not greater than 3. 0毫米; Steel tube wall thickness is greater than 12. 5 mm, the weld residual high not greater than 3. 5mm。 Bending is not greater than 168 nominal diameter. 3 mm of steel pipe, according to provisions of supply and demand both sides agreement should be flat or measure of curvature; Nominal diameter greater than 168. 3 mm steel, bending is not greater than steel tube length of 0. 2%. Steel tube wall thickness is greater than 4 mm, tube processing groove 30 ° + 5 ° 0 °, leave 1. 6毫米±0。 8mm。 'Integrity-based, customer first' is our business principle, 'quality first, service first' is our management philosophy guileless. Company spirit of 'technology first, quality first, service first' philosophy, established a perfect quality assurance system. The quality has reached the domestic like product 'quality trustworthy product'. More won industry recognition and praise. Small diameter straight seam welded steel pipe main production process description: 1. Board revisited: used to make large diameter submerged-arc welding straight seam steel pipe, steel plate into the production line after the first full plate ultrasonic inspection; 2. Edge milling: through the two edges of the steel plate edge milling machine double-sided milling, make it meet the requirements of plate, plate edge parallelism and groove shape; 3. Bending side: the use of bending machine for plate bending, make the edge with conform to the requirements of the curvature; 4. Molding: on the JCO forming machine bending of the plate after half after many step punching, pressed into 'J' form, and the other half of the steel plate bending, same pressure into a 'C' shape, eventually forming the opening 'O' shape. 【 Warm prompt. 【 The bearing network] Some information from the Internet, and strive to secure timely, accurate, aims to deliver more information, does not represent our views to its approval or responsibility for their authenticity. If this net reprint information involves the issues such as copyright, please contact with this net. Tel: 0571 - 81630205. Tags: production and processing