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Steel pipe factory supplies Q235 high frequency resistance welded straight seam steel pipe

total supply
500 吨
MOQ
1 吨
brand
沧州宏运钢管
area
HebeiCangzhou City
Delivery period:
Shipped within 7 days from the date of payment by the buyer
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area:Hebei Cangzhou City

Member level:corporate memberYear1

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Hebei Cangzhou Hongyun Steel Pipe Co., Ltd.

  • name:李女士(lady) 网络销售员
  • phone:0317-5203508
  • mobile phone:18031731970
  • address:沧州市经济开发区
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Product Details
材质:
Q235
Specifications
The following straight seam high-frequency welded steel pipes have the characteristics of relatively simple process and rapid continuous production. They are widely used in civil construction, petrochemical, light industry and other departments. It is mostly used to transport low-pressure fluid or be made into various engineering components and light industrial products. The straight seam high-frequency welded steel pipe has advanced forming technology, reliable quality, good welding position, stable welding parameters, fast welding speed and high output. The equipment and technology of the entire production line are at the current international level. Product features: The straight seam high-frequency welded steel pipe has small rebound and small residual stress during the forming process. The deformation hardening effect is small, and the geometric dimensions after rounding are accurate, which is beneficial to ensuring construction and welding quality. The straight seam high-frequency welded steel pipe weld bead has a good shape and is not prone to defects such as undercuts and misalignment of internal and external welds. The straight seam steel pipe weld bead is distributed at one point on the circumference, so the weld can be placed at a favorable position according to the usage requirements. Straight seam welded steel pipes are made by rolling long strips of steel strips of certain specifications into round tubes through high-frequency welding units and welding straight seams. Welded steel pipes should be subjected to mechanical performance tests, flattening tests and expansion tests, and To meet the requirements specified in the standard. The steel pipe should be able to withstand a certain internal pressure. If necessary, a pressure test should be performed to maintain no leakage for one minute. It is allowed to use eddy current flaw detection method instead of hydrostatic test. Eddy current flaw detection is carried out in accordance with the standard B "Eddy Current Flaw Detection Inspection Method for Steel Pipes". The eddy current flaw detection method is to fix the probe on the frame, keep a ~mm distance between the flaw detection and the weld, and rely on the rapid movement of the steel pipe to conduct a comprehensive scan of the weld. The flaw detection signal is automatically processed and automatically sorted by the eddy current flaw detector to achieve The purpose of flaw detection.
High-frequency welding is based on the principle of electromagnetic induction and the skin effect, proximity effect and eddy current thermal effect of AC charges in the conductor, which causes the steel at the edge of the weld to be locally heated to a molten state, and is extruded by the roller to make the butt weld. The seam realizes inter-crystal bonding, thereby achieving the purpose of welding. High-frequency welding is a kind of induction welding (or pressure contact welding). It does not require weld fillers, has no welding spatter, has narrow welding heat-affected zones, beautiful welding shapes, and good welding mechanical properties. Therefore, it is widely used in steel pipes. It is widely used in production.
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