characteristics,Submerged,arc, technology characteristics of Submerged arc welding steel pipe


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What is submerged arc welding characteristics of straight seam steel pipe? Many dealers friend because of submerged arc welding and straight seam steel pipe production process do not understand, definition of submerged arc welding straight seam steel pipe is not clear, lead to loss of straight seam steel pipe distributor orders. Below the dragon minister of submerged arc welding steel pipe production is the definition of a submerged arc welding  steel pipe? High frequency straight steel tube with submerged arc straight seam steel pipe production process difference in where? What's the difference between a submerged arc welding with high frequency welding? How to distinguish between high frequency and submerged arc straight seam steel pipe? As well as high frequency and submerged arc welding steel pipe made the execution of the standard difference between auspicious fine explanation:What is the definition of a submerged arc welding and straight seam steel pipe?Submerged arc steel tube body of straight seam has a longitudinal weld, diameter greater than 914 mm when allowed to have two weld, use of submerged arc welding wire filling welding, submerged arc and straight seam steel ASWL for short, is a weld flux protection; Submerged arc straight seam steel pipe outside the biggest characteristic is to use wire arc hot melt, and using submerged arc welding.High frequency straight steel tube with submerged arc straight seam steel pipe production process difference in where?High frequency straight seam steel pipe and submerged arc straight seam steel pipe production difference mainly using different raw materials, molding process, welding process, the production unit is different, different production range.Submerged arc straight seam steel pipe for the narrowest 1250 mm rolled plate, medium plate, medium plate production of raw materials for production. High frequency straight seam steel pipe to the 1500 mm wide strip steel raw materials for production. Strip the bottom on cost.Submerged arc straight seam steel pipe forming process of JCOE forming, with cold stamping characteristics is to make the steel sheet is an unit with a 50 mm gradually forming, J, C, O, E image represents the submerged arc straight seam steel pipe forming process.High frequency straight seam steel pipe molding process for a roll wheel of extrusion on both ends of the strip, finally make the alignment of cold forming process on both ends of the strip, is characterized by forming process uninterrupted, continuous welding.Submerged arc welding process is characterized by using electrothermal effect of welding wire and steel plate hot melt together, as a filler welding. High frequency straight seam steel pipe welding process is characterized by using the high frequency skin effect of current on both ends of the strip steel rose sharply in a short period of time under the action of external force, make the steel strip from fused together.High frequency straight pipe production unit with the effect of continuous production line for assembly line, and the submerged arc welding straight seam steel pipe as many as 15 procedure of intermittent production of complete sets of units.High frequency straight seam steel pipe production specification is less, production thickness is thinner. Submerged arc straight seam steel pipe can produce over 325 to 325 in MMM any specifications and the thickness of 80 mm thick.How to distinguish between high frequency and submerged arc straight seam steel pipe?Line inside the high frequency straight seam steel pipe and submerged arc straight seam steel pipe have obvious differences in appearance, mainly on the appearance and weld, the appearance of steel tube body of high frequency level off is smooth, no oxide coating adhesion. On the weld, the high frequency straight seam steel pipe weld high measure to squeeze flow resistance, the jagged serrate irregular weld, the weld is "scrape" before they go out, with a flat weld removal of trace; Submerged arc strip straight seam steel pipe in appearance with a slight indentation, mainly in steel tube inside. Submerged arc straight seam steel pipe weld is higher than the parent metal in 1-3 mm weld high measure, according to customer's requirement before delivery to the weld "grinding" in addition to, and had clear analyse of the grinding wheel grinding trace.As well as high frequency and the execution of the submerged arc welding steel pipe standard to distinguish?On the standards, two types of steel tube can perform the same standards: GB/T3091-2208, GB/T9711.1-2011, GB/T9711.1-2001, API 5 l PSL1, API 5 l PSL2; But two kinds of steel pipe certificates are not the same, high frequency pipe related certificates specified in "ERW", use submerged arc welding steel pipe related certificate to use for specified in "ASWL"

characteristics,Submerged,arc,

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