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Our company make seamless steel tube with low price and good quality . We are able to manufacture all kinds of relative products according to your special requirements or drawings Our products enjoy good reputation with competitive price and high quality in the international market . Continuing service and customer support is our way of developing a strong alliance with you and your company . Application : use for oil well , precision machines , ship , petro-chemical , structure pipe , shock absorber , building , geology , line pipe , automobile , fluid tubes ect . Processing modeDiameterLengthLinearityPrecisionRoughness of inner holeCold drawn45 630≤14M0.3 1.0H8 H10Ra0.8 Ra1.6Hone25 500≤10M0.3H7 h8Ra0.4 Ra0.8 Mechanical Performance ModelItemCold drawn tube20#Intensity of tension σbN/mm2≥510Elongation rate δ5%≥545#Intensity of tension σbN/mm2≥647Elongation rate δ5%≥416MnIntensity of tension σbN/mm2≥640Elongation rate δ5%≥1027SiMnIntensity of tension σbN/mm2≥840Elongation rate δ5%≥7.5 Looking forward to our future good cooperation and welcome to visit our factory . If you are interested in our pipes . Please feel free to contact me .