Name: American standard seamless carbon steel tube Brand and grade: A53 Standard: ASTM Specification: OD20 x 1.5mm - OD121 x 15mm Seamless steel tubes in liquid transportation are mainly applied to petroleum and gas long-distance transportation, as well as industrial and civilian liquid transportation system. Structure usage is also adaptive. Model No.: ZG-SM-33 Product Origin: China Price Terms: FOB Shanghai, CIF, CNF, EXW Payment Terms: L/C or T/T Minimum Order: 10MT Delivery Lead Time: Around 20 -30 days Certification(s): A53