2026-02-04 Straight seam welded steel pipes are steel pipes where the weld seam is parallel to the longitudinal direction of the pipe. They are typically classified into metric electric welded steel pipes, electric welded thin-walled steel pipes, transformer cooling oil pipes, etc. The production process of st
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2026-02-03 Determining the length of cold-drawn steel pipes requires considering three core objectives: "meeting subsequent processing needs," "maximizing material utilization," and "adapting to batch production rhythm." This avoids cost waste or quality risks caused by considering only one dimension. Specific
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2026-02-02 PSL1 Gr.B API 5L hot-rolled seamless steel pipe is a type of steel pipe conforming to the API 5L standard, primarily used in oil and gas transportation and other fields. The following is a detailed explanation of this seamless steel pipe:(1) API 5L Standard: API 5L is a pipeline steel pipe standard
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2026-01-30 Currently, the most common method for cutting spiral welded steel pipes is plasma cutting. This process generates a large amount of metal vapor, ozone, and nitrogen oxide fumes, severely polluting the surrounding environment. The key to solving the fume problem is how to completely draw the plasma f
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2026-01-29 First, what are some rust removal technologies for straight seam steel pipes?In the anti-corrosion construction of oil and gas pipelines, the surface treatment of straight seam steel pipes is one of the key factors determining the service life of the pipeline's anti-corrosion coating. It is a prereq
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2026-01-28 First, what are the technical requirements for straight seam steel pipes?According to GB3092 "Welded Steel Pipes for Low-Pressure Fluid Transportation" standard, the nominal diameter of straight seam steel pipes is 6~150mm, the nominal wall thickness is 2.0~6.0mm, and the length is usually 4~10 mete
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2026-01-27 First, what are the classifications of oil casing?Oil casing can be broadly classified according to its application into surface casing, intermediate casing, production casing, and drilling casing.(1) Surface Casing: Surface casing uses a casing head installed at the top to suspend and support subse
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2026-01-26 (1) During extrusion, the temperature of the inner lining of the spiral welded steel pipe continuously increases with the progress of the extrusion process. At the end of extrusion, the temperature in the area near the extrusion die on the inner wall of the lining is relatively high, reaching 631℃.
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