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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2025-12-05 First, Types of Oil Screen Steel Pipes1. Slotted Oil Screen Steel Pipe2. Drilled Oil Screen Steel Pipe3. Wire-wound Oil Screen Steel Pipe4. Bridge-type Oil Screen Steel Pipe5. Composite Oil Screen Steel PipeSecond, Characteristics of Oil Screen Steel Pipes.1. Oil screen steel pipes are machined from
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2025-12-04 This heat treatment method effectively improves the impact toughness, tensile strength, and rupture resistance of oil casing, ensuring its excellent performance in use. Oil casing is an essential material for drilling oil and natural gas, requiring good performance during use. Different temperature
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