Petroleum casing is an important equipment for oil drilling. The thread surface of oil casing and coupling should be smooth. Burrs, tearing and other defects sufficient to cause thread interruption to affect strength and tight connection should not be allowed. Product Name:OCTG casing pipe SurfaceTreatment:Anti-corrosion Water Based Paint Standard:API SPEC 5CT Steel grade:H40, J55, N80, N80Q, L80, L80-1, L80-9Cr, L80-13Cr, P110 etc O.D:114.3~508mm W.T:4.24-16mm Length:R1( 6.10-7.32m ), R2( 8.53-9.75m), R3(11.58-12.80m) packing details:Protection Caps on both ends and in bundles with steel strips and two tags as per export requirements. Type of upset:NUE, EUE, Plain end Delivery:date According to The Specifications And the Quantities Of Each Contract Application:Used as the architectural retainer for the walls of oil, gas wells. Contact name:clair Tel:8603175501333 E-mail:brcasingpipes@aliyun.com F-Skype:13731713063 Whatsapp:+8619831763035