... the petroleum machinery such as sucker rod, drill collar, drill pipe Thickness1.24-60mmOut diameter10.3-1219.2mmLength6000-12000mmStandardAISI, ASTM, BS ... , DIN, GB, JISMaterialA25,A,B,X42,X46,X52,X56,X60,X65,X70,X80 H40 J55 K ... ,Africa etcCertificateBV,SGS,MTCDelivery timeWithin 7-10 days petroleum casing pipe