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Submerged arc welding area prone to defects such as stomata, hot cracks, and undercut. 1, bubble. Bubble occurred in the middle of the bead, the main reason is that hydrogen is still in the form of bubbles hidden in the weld metal inside, so the elimination of this defect is the first measure must be removed welding wire and weld rust, oil, moisture and moisture And other substances, followed by the need to dry the flux to remove moisture. In addition, to increase the curr...

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1, the molding process, the steel plate deformation, the residual stress is small, the surface does not produce scratches. The processing of spiral steel pipe in the diameter and wall thickness of the size of the specifications have greater flexibility, especially in the production of high-grade thick-walled pipe, especially in small and medium-sized thick-walled pipe with other technology can not match the advantages to meet the user In the spiral steel pipe specificatio...

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According to the manufacturing method can be divided into: sand centrifugal socket straight, continuous cast iron pipe straight pipe and the sand. According to the different materials can be divided into: gray cast iron, nodular cast iron and high silicon iron pipe. 1. Cast iron water pipe: The use of cast iron cast iron water pipe of No. 18 above by adding nodulizer, after centrifugal ductile cast iron pipe by centrifugal casting machine, the performance of ductile...

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[2019-06-27]

Cut wire is bright iron wire, fire wire, galvanized wire, coated wire, wire coating and other metal wire, according to customer requirements after straightening scale truncation. Product features: easy to transport, easy to use. Product uses: widely used in the construction industry, handicrafts, daily civil, and other fields. Product specifications: 8#-23# (wire diameter 0.6mm-4.5mm), the length is not limited. Can be customized according to customer specific r...

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Note Q345 seamless pipe, the use rate is very high, but the general construction before the construction, the pipe, pipe fittings, rubber ring and so on to do an appearance inspection, found that there is a problem to give up the use of. 1. Q345 seamless tube cleaning moment: Bearing all the debris removal clean mouth. 2. Cleaning apron, apron: adhesive material on the apron clean up, put the ring bending "quincunx" or figure 8 into the socket slot, and hand along the...

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Precision tube is a kind of cold drawn or cold rolled seamless steel tube production process of high precision and high brightness by. The inside and outside diameter sizes can be accurate to 0.2mm, and the utility model can be widely used for the manufacture of precision mechanical parts and engineering structures when the bending and torsional strength are the same. Also used for production of various conventional weapons, barrel, shells, bearing etc.. According to th...

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1. Clean Application of solvent, emulsion cleaning steel appearance, to remove oil, grease, dust, lubricant and similar organic matter, but it can't remove the steel surface rust, oxide, flux, and the only accessory as produced in corrosion. 2. Derusting tools The primary use of wire brush tools such as grinding of steel surface, can remove the loose or tilt of the scale, rust, welding slag etc.. Hand tools rust can reach Sa2 level, Powertool cleaning can reach ...

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Small and medium sized steel, wire rod, steel, pipe, steel wire and wire rope, can be stored in a well ventilated material shed, but must cover pad. Some small, thin steel plate, steel, silicon steel sheet, small caliber or thin-walled steel tube, cold rolling, cold drawn steel and high price, easy corrosion metal products, can be stored in storage. Keep the site or warehouse of spiral steel pipe products, should be selected in the clean, unobstructed drainage areas, ...

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In the use of helical submerged arc welded steel pipe and the production process, the human invention of a lot of excellent welding and production methods, greatly promoted the steady and rapid development of the industry, but also makes the industry in the development of optimization. Which submerged arc welding is a new welding method invented in 1940, it is the same as the previous manual welding is it or the use of slag protection, but the residue is not the electrode...

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