API 5L straight-seam welded steel pipes are widely used in oil and gas pipelines and industrial infrastructure. Buyers should first distinguish between PSL1 and PSL2: PSL1 provides baseline chemical, mechanical, and testing requirements, while PSL2 adds stricter controls on composition, toughness, n
READ MOREProject name: Wear-Resistant Lined Pipes for Mining Slurry and Tailings Applications Product : Steel-lined polyurethane wear pipes, high-chromium bimetallic composite pipes, alumina ceramic-lined composite pipes, and matching elbows/tees Specifications & Standards: Diameter range DN50–DN1200; outer base pipe in Q235B / 20# seamless steel or Q355; inner lining options include polyurethane (Shore hardness 85–95A), high-chromium alloy (Cr 23%–30%, hardness HRC58–65), and alumina ceramic (Al₂O₃ ≥95%, microhardness HV1000–1800); pressure rating 1.6–6.0 MPa; service temperature from -50°C to over 500°C depending on lining material; flanges conform to HG/T 20592 or customized drilling; non-standard fittings and long-length pipes available per customer drawings. Country: Mining Regions in Central Asia and Africa
READ MOREStraight seam high-frequency welded pipe (ERW) is produced by forming steel strip into a tube and joining the edges with high-frequency resistance welding. The process includes uncoiling, leveling, roll forming, welding, sizing, cutting, and inspection. ERW pipes offer efficient continuous productio
READ MOREStraight seam welded steel pipes are widely used in water supply, construction, industrial piping, and oil and gas transportation, but not all products meet the same technical requirements. Four commonly referenced standards are GB/T 3091, GB/T 13793, API 5L, and ASTM A53. GB/T 3091 covers welded pi
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