INSPECTION OF OCTG
One of the services we providing is OCTG inspection. There are the OCTG Visual Thread Inspection (VTI), Visual Body Inspection (VBI, FLVI), Drift Testing, Length Measurement. Another is NDT inspections, that including Magnetic Particle Testing, Ultrasonic Testing and Liquid Penetrant Testing.
VISUAL THREAD INSPECTION
Visual thread inspection (VTI) was carried out by our qualified inspectors. This inspection is detecting of imperfections occur on the threads, including cosmetic repair on minor damaged threads on both pins and couplings.
OSS has an experience in the premium connections, such as.
|API Connections :||NU (Non-upset)
EU (External upset)
SC (Short round)
LC (Long round)
|Hengyang Valin Steel Tube :||HSM-2|
|Wuxi Seamless :||WSP-1T|
|JFE STEEL :||JFE-FOX
|Vallourec :||VAM TOP|
|Nippon Steel :||NSCT
|Tenaris :||Antares MS
TSH Blue Serie
|Oil States :||Leopard|
|Bao Steel :||BGT-2|
VISUAL BODY INSPECTION
Visual body inspection (VBI) or Full-length visual inspection (FLVI) of the entire outside and inside surfaces, excluding the threads, shall be conducted to detect gouges, cuts, pits, dents, grinds, mechanical damage, lack of straightness, and other visually detectable imperfections. Each length shall be rolled and the entire surface viewed.
Casing or tubing shall be drifted throughout its entire length to detect reduction in inside diameter. We provide Full Length Drift (FLD) and End Drift by using standard or special drift mandrels following API standard. This drift mandrels are available to serve customers. We have the drift mandrels for tubing size from 2 3/8″ to 4 1/2″ and casing size from 4 1/2″ to 13 3/8″.
LENGTH MEASUREMENT (TALLY)
API 5CT has established the standard range of pipes in 4 group e.g. pupjoint, range 1, range 2 and range 3. This ranges of tubular would be recorded and report to our customers. The measuring tape and laser distance meter are using to verify the length before sending to customer.
WALL THICKNESS VERIFICATION
Ultrasonic Testing is a family of None Destructive Testing base on the propagation of ultrasonic wave in the material tested. This would be carried out on remaining wall thickness comply with API Standard. This method can be applied on long storage pipes or suspected material, to check the remaining thickness. Not only the steel pipe but also other material such as resin, plastic, copper, silver or glass. This is optional inspection depend on customer requirement.
MAGNETIC PARTICLE TESTING
Magnetic testing is a non-destructive testing (NDT) process for detecting surface and slightly subsurface discontinuities in ferromagnetic materials such asiron, nickel, cobalt, and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs when no electric current is passed through the test object, but a magnetic field is applied from an outside source. The magnetic lines of force are perpendicular to the direction of the electric current which may be either alternating current (AC) or some form of direct current (DC) (rectified AC).
LIQUID PENETRANT TESTING
This is the one method of NDT. Visual inspection by using liquid penetrant method to find out the imperfection appearing on material surface. This method can be applied to check the OD of pipes, thread, tank, shackle, hook, pad eye or other equipment depend on customer requirement.