Cangzhou Dongrun Pipe Industry Co., Ltd. is a specialized company engaged in the sales and export of steel pipes and pipe fittings. Located in Yanshan, Hebei, known as the "Pipe Equipment Manufacturing Base," our main products include seamless steel pipes (hot-rolled, cold drawn), spiral steel pipes, straight seam steel pipes, hot-expanded steel pipes, large-diameter thick-walled steel pipes, alloy steel pipes, anti-corrosion and insulated steel pipes. Seamless steel pipes range from 57mm to 910mm in diameter and 2.0mm to 26mm in wall thickness; double-sided submerged arc-welded spiral steel pipes from 219mm to 3600mm in diameter and 6.0mm to 30mm in wall thickness; straight seam electric resistance welded (ERW) steel pipes from 21.3mm to 457.2mm in diameter and 1.8mm to 14.27mm in wall thickness, as well as straight seam double-sided submerged arc-welded pipes from 310mm to 3200mm in diameter and 6mm to 60mm in wall thickness; hot-expanded seamless steel pipes from 245mm to 920mm in diameter and 6.0mm to 34mm in wall thickness; large-diameter thick-walled steel pipes from 351mm to 3600mm in diameter and 26mm to 80mm in wall thickness. The seamless steel pipes comply with standards GB/T8162, 8163, 3087, 5310, 6479, 9948, 5312. Spiral steel pipes comply with standards GB/T9711.1, 9711.2, SY/T5037, 5040, APTSPEC 5L. Straight seam steel pipes comply with standards GB/T3091, 9711, 13793, API Spec 5L. Hot-expanded steel pipes comply with standards GB/T8162, 8163, 3091. Large-diameter thick-walled steel pipes comply with standards GB/T3091, 3092, 14980, 13793. Alloy steel pipes comply with standards GB3087, 5310, 6479, 9948, SY/T6194, API5CT, API5L, API5B, ASTM53M, ASTM A106, ASTM A213/213M, DIN17175. According to customer requirements, our company can undertake single and double-layer fusion bonded epoxy powder (FBE), double-layer polyethylene (2PE) and triple-layer polyethylene (3PE) steel pipes, double-layer polypropylene (2PP) and triple-layer polypropylene (3PP) steel pipes, external anti-corrosion engineering of pipe coatings with epoxy coal tar paint, and internal anti-corrosion engineering of cement mortar on pipe interiors, as well as various anti-corrosion structures for pipe coatings. We also handle buried steel clad steel wool insulation, black/yellow jacketed polyurethane foam insulated steel pipes, and execute standards DIN30670-30671, SY/T4013, 0315. Our products are widely used in long-distance pipelines for oil, natural gas, coal gas, water, and in urban centralized heating networks, coal gas networks, and other engineering projects. They are praised for their high strength, high pressure resistance, ease of installation, low cost, and long service life.