2025-12-17 Steel pipes are essential materials commonly used in construction, engineering, and manufacturing. For large-diameter steel pipes, such as DN800 steel pipes, their quality and safety are paramount. Therefore, strict inspection standards are crucial for ensuring the quality and safe use of steel pipe
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2025-12-16 1. General Requirements for Fire-fighting Steel Pipes(1) When using hot-dip galvanized fire-fighting steel pipes with inner and outer walls for fire hydrant water supply systems, welding should not be used. When using non-corrosion-resistant steel pipes with inner walls, welding connections are perm
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2025-12-15 Hardness is the ability of a metallic material to resist indentation by a hard object. Depending on the test method and applicable scope, it can be classified into Vickers hardness, Shore hardness, Brinell hardness, Rockwell hardness, microhardness, and high-temperature hardness etc. For anti-corros
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2025-12-12 1. The designations for hot-dip galvanized steel pipe and hot-dip galvanized steel pipe SC are different: Hot-dip galvanized steel pipe generally refers to water pipes with a standard nominal diameter represented by the symbol DN. Hot-dip galvanized steel pipe SC indicates that the conductor is laid
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2025-12-11 First, what is oil casing?Oil casing is primarily used for drilling and transporting oil and gas in oil and gas wells. It includes drill pipe, casing, and sucker pipe. Drill pipe mainly connects the drill collar and drill bit and transmits drilling power. Casing mainly supports the wellbore during d
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2025-12-10 1. The appearance of anti-corrosion steel pipes upon entering and leaving the warehouse should be inspected as follows:① Inspect each pipe individually to ensure that the surface of the polyethylene layer is smooth and flat, free of bubbles, pits, wrinkles, and cracks, and the overall color is unifo
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2025-12-09 1. Spiral steel pipe packaging should prevent loosening and damage during normal loading, unloading, transportation, and storage.2. If the buyer has special requirements for the packaging materials and methods of the spiral steel pipes, these should be specified in the contract; otherwise, the suppl
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2025-12-08 The main process parameters for high-frequency straight seam welded steel pipes include welding heat input, welding pressure, welding speed, opening angle, the position and size of the induction coil, and the position of the impedance device. These parameters have a significant impact on improving t
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