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The carbon seamless steel pipe fittings have the high quality and the best price Shandong xinyuan steel pipe manufacturing Co., LTDOur company mainly produce thick wall pipe, seamless steel alloy tubes, stainless steel pipe, casing, thermal expansion pipe fittings, and all kinds of casting products.Thick wall tube: 219-1010 * 30-160Thermal expansion: 245-92 * 6-30Stainless steel tube: 3-219 * 6- ...