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Apr 03, 2026BS 4360 Grade 50 Double-sided submerged arc welding steel pipeBS 4360 Grade 50 DSAW (Double-Sided Submerged Arc Welded) steel pipe is a high-strength structural steel product that combines the now-withdrawn British Standard material grade wit -
Apr 03, 2026BS 4360 Grade 43 Double-sided submerged arc welding steel pipeBS 4360 Grade 43 DSAW (Double-Sided Submerged Arc Welded) steel pipe is a standard structural steel product that combines the now-withdrawn British Standard material grade with a r -
Apr 03, 2026ASTM A53 GR B Double-sided submerged arc welding steel pipeASTM A53 Grade B DSAW (Double-Sided Submerged Arc Welded) steel pipe is the most common and widely used specification for large-diameter welded carbon steel pipe in general industr -
Apr 02, 2026What is heavy wall tubingThick-walled steel pipes refer to steel pipes with an outer diameter to wall thickness ratio of less than 20. They are typically used in engineering applications where they must wi -
Apr 02, 2026LSAW pipes are prone to spiral weldwhen stacking multiple layers, use wooden blocks for spacing, with each layer not exceeding 2 meters in height to distribute pressure. Third, reinforce the weld area before long-di -
Apr 02, 2026European customers for EFW PipeEuropean customers' core requirements: EN 10219 standard certification, wall thickness accuracy ±0.1mm, surface roughness Ra≤0.8μm, and environmentally friendly materials (lead-fre -
Apr 02, 2026between HFW Pipe and ERW PipeThere are three core differences: First, the welding power source. HFW Pipe uses a high-frequency induction power source (10-100kHz), resulting in rapid heating (up to 1000℃/s), wh -
Apr 02, 2026test pressure for LSAW Pipe calculatedThe formula for calculating the hydrostatic test pressure of an LSAW pipe is: P = 2σt/D (σ is the allowable stress of the pipe, t is the wall thickness, and D is the outer diameter -
Apr 02, 2026application limitations of LSAW pipesThe core welded pipe for marine engineering, used in offshore platform pile foundations and subsea oil pipelines. -
Apr 02, 2026heat-affected zone of LSAW PipeThe heat-affected zone (HAZ) width of LSAW pipes is 2-5mm due to the large heat input (typically 1.5-3.0kJ/mm) in submerged arc welding, resulting in a wider HAZ. -
Apr 02, 2026LSAW Pipe and EFW PipeLSAW Pipe is an abbreviation for Longitudinal Submerged Arc Welded Pipe, which involves spirally forming a steel strip into a tubular shape before submerged arc welding. -
Apr 02, 2026ASTM A53 GR A Double-sided submerged arc welding steel pipeASTM A53 Grade A DSAW (Double-Sided Submerged Arc Welded) steel pipe is a technically valid and commercially available product for large-diameter, low-pressure fluid transmission a
