... (1/8''-20'')× 1.2mm-39mm Standard GB, ASTM, API 5L, API 5CT,DIN, JIS and so on Out Diameter 10.29mm ... FIS G3454-1998 DIN 1629-1984seamless steel tbesand pipesfor casingAPI SPEC 5CTJ55, N80APISeamless steel tubes foroil casing andtubing in oil wellsAPE ... , 20ASTM A179, ASTM A192 ASTM SA179,SA192, BS3059Seamless Steel Tubes for high pressure --Chemical fertilizer equipmentGB6479-8610, 20G, Q345, Q390, ...