20# carbon steel pipe 1.Standard:ASTM,AISI,EN,DIN,BS 2 ... fast delivery.superior quality About the Products: Descriptioncarbon steel pipe,seamless steel pipe,steel pipe StandardGB5310-95,GB8087-1999,GB8162,GB8163-1999,GB3087,GB6479 ... the Company: Company NameTianjin Fengtai Huixin Steel Trading Co.,LtdIntroductionOur company specializing in selling stainless steel products. alloy pipes, petroleum casing ...