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We are the manufacture specializing in making steel pipe and steel strip/coil. Hebei huixing metal products Co., ltdwww heibeihuixing cnSteel pipe/tubeMaterial Q195-Q235 SPCC and othersSpecifications Round pipe 7-100mm Square pipe 10*10-100*100mm Rectangular pipe 8.7*9.5-50-100mm Radiator pipe 36D 40D 25*50 25*70 L T Z 28 38 Bike pipe Oblate pipe 10*23-20*138mmLength 4M-9MThickness 0.3-3.0mmBE Bended YESBe electroplated YESBe Shrinked YESSurface SatinyOD tolerance 0.03Thickness tolerance 0.02Linearity 1.5/1000Volume of production 300, 000 TON PER YEAR square pipe, round pipe, rectangular