Supply profiled square pipe, The deformed square steel tube manufacturers profiled seamless steel pipe is the general term in addition to other than the cross-sectional shape of the tube seamless steel pipe. The wall thickness of profiled steel pipe cross-sectional shape and size can be divided into such as seamless steel pipe (code D), ranging from wall thickness Shaped seamless steel pipe (Code BD) atypia of variable diameter seamless steel pipe (codenamed BJ). Shaped seamless steel tubes are widely used in a variety of structural parts, tools and machinery parts. And tube, shaped tube generally have a greater moment of inertia and section modulus, bending and torsional ability, can greatly reduce the structural weight, saving steel. Yixingguan generally off-sectional to distinguish by material can be divided into seamless steel pipe Yixingguan aluminum shaped tube, plastic shaped tube. The following main steel pipe Yixingguan. Oval shaped steel tube steel tube shaped tube can be divided into triangular shaped steel tube, hexagonal shaped steel tube, diamond-shaped steel tube, octagonal-shaped steel tube, semicircular profiled steel circle, equilateral hexagonal shaped steel tube, five quincunx Shaped Steel Tube double convex shaped steel tube, double-concave shaped steel tube, melon-shaped shaped steel tubes, conical-shaped steel tube, corrugated special steel pipe. Sub-shaped tube profiled square pipe, rectangular shaped tube shaped welded pipes, spiral welded pipes, specification: 20 * 20mm-500mm, wall thickness 0.6mm-20mm, spiral steel pipe spiral steel pipe specifications, 219mm-2020mm, wall thickness 5mm-20mm. straight seam specifications 4 points, 6 points, 1-inch, 1.2-inch, 1.5-inch, 2-inch, 2.5-inch, 3-inch, 4-inch, 5-inch, 6-inch, 8-inch, 102,108,127,133,139 159,168,177,194,219,273,325 specifications Yixingguan such more generally refers to the square and rectangular steel