Spiral steel pipe itself has no life limit, and the service life is mainly related to the operating environment and production process. Spiral steel pipe operating environment is relatively poor In order to extend the service life, the oute.
API 5CT N80/M65/L80/L8013CR/C90/C95/T95/P110/Q125/V150
VAM Casing Pipe
SY/T 6194 Petroleum and natural gas industries Steel pipes for use as casing or tubing for wells
API 5CT CASING AND TUBING
BS EN ISO 11960 Petroleum and natural gas industries Steel pipes for use as casing or tubing for wells
NF M87-207 Petroleum and natural gas industries Steel pipes for use as casing or tubing for wells
JIS G3439 SEAMLESS STEEL OIL WELL CASING, TUBING AND DRILL PIPE
IS 4270 Steel tubes for well spainend casing pipes
Steel Grade H40, J55, K55, N80, M65, L80, L8013CR, C90, C95, T95, P110, Q125, V150
Outer Diameter Casing OD 4 1/2"- 20" (114.3mm-508mm)
Tubing OD 2 3/8" - 4 1/2" (60.3mm-114.30mm)
Wall Thickness 0. 205"- 0.635"
Length R1(4.88mtr-7.62mtr), R2(7.62mtr-10.36mtr), R3(10.36mtr or longer)
Connection Casing LTC, STC, BTC, VAM. Tubing NUE, EUE
End Beveled, Square cut. And pipe protection cap specially for casing and tubing.
Surface Corrosion proofing water based paint
Heat treatment: Normalized, Quencher & Temper
Coating A choice of black or clear varnish exists for coating of the OCTG material. This coating is a solvent deposited non toxic phenolic PVB that provides atmospheric resistance to oxidation for a period of 6 to 12 months.
Marking Identification marking is applied to every pipe by means of paint stencilling along the length of the pipe and is in full accordance with Appendix D of API 5CT. Colour band marking is applied in accordance with said specification. Additional information pertaining to the bundle is printed on a weatherproof plastic label that is attached to the bundle.
Test Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield
strength, Elongation), Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc), Exterior Size Inspection, Nondestructive Test (Ultrasonic flaw detector, Eddy current flaw detector), Hydrostatic Test(The standard pressure is limited to 20,7 MPa (3000psi)), Electro-magnetic inspection to SR1 is carried out on all line pipes.
Mill Test Certificate EN 10204/3.1B