Steel Tube Handbook - 2018

60 Casing and tubing - tube for oils The tubes are used in oil and gas industry. List of standards for casing and tubing Standard Dimensional standard Dimensions TDC Steel grade API API Spec 5CT Tab 22 Page 61 API Spec 5CT H40, J55, K55, N80 EN ISO EN ISO 11960 EN ISO 11960 Dimensional standard and technickal delivery condition standard API 5CT Specification for casing and tubing ( ISO 11960:2004 ) Dimensions a tolerances Dimensions are given in Table 22. Tubes are delivered mainly as hot rolled. Tube lengths (Tubing) Group 1: 6,10–7,32 m (20–24 ft) Group 2: 8,53–9,75 m (28–32 ft) Group 3: 11,58–12,80 m (38–42 ft) Tube lengths Casing Group 1: 4,88–7,62 m (16–25 ft) Group 2: 7,62–10,36 m (25–34 ft) Group 3: 10,36–14,64 m (34–48 ft) Straightness Tubes are visually straight. Tube ends Plain tube ends without threading and flanges. Steel grade Steel grades are given in survey table. Final supply conditions and surface condition Hot finished tubes are not heat treated. Surface of tubes corresponded to the method of tube manufacturing. Normalization (N) only upon agreement. Pipe and bundle marking • stamp marking • stencil marking (Ink Jet) • colour bands Bundles are marked with one or more metal tags with requ- ired information. Surface protection The pipes are supplied either uncoated or with manufac- turer’s standard mill coating. Upon request the tube ends could be plugged with plastic caps. Packaging Pipes are packed in round bundles with weight 1000–3500 kg. Each bundle is bounded with 4 steel strips. Testing Tubes are tested according to requirements of standard API 5CT, eventually additional agreed tests. Certified test report API Spec 5CT DIN 50049 – 3.1.B EN 10204 – 3.1 Standards Steel Chemical composition [%] Mechanical properties C Si Mn P max S max Cr Ni Mo Cu Other Re Rm A5 min MPa min ksi min MPa max MPa min ksi min % API Spec5CT Grade H40 – – – 0,030 0,030 276 40 414 60 Grade J55 – – – 0,030 0,030 379 55 517 75 Grade K55 – – – 0,030 0,030 379 55 655 95 Grade N80-1 0,030 0,030 552 80 689 100 Steels grades, chemical composition and mechanical properties (Group 1 and Type 1 according API Spec 5CT) Tubing is delivered according of requirements PSL 1. Level PSL 2 and PSL 3 (Annex H of API 5 CT) according agreement.