ERW Casing Pipe
ERW Casing Pipe Product Introduction. Electric-welded pipe has one longitudinal seam formed by electric-resistance or electric-induction welding without the addition of filler metal. The edges to be welded are pressed together mechanically, and the heat for welding is generated by the...Send Inquiry
Electric-welded pipe has one longitudinal seam formed by electric-resistance or electric-induction welding without the addition of filler metal. The edges to be welded are pressed together mechanically, and the heat for welding is generated by the resistance to flow of electric current. The weld seam of electric welded pipe is heat-treated after welding to a minimum temperature of 1,000°F or processed so that no untempered martensite remains. See API Spec. 5CT for exceptions.
API 5CT .....
J55, K55, N80, 37Mn5, 34Mn6, 30Mn2, 25Mn2 etc
OD: 8 5/8", 9 5/8", 10 3/4", 11 3/4", 13 3/8", 16", 18 5/8", 7"
Thickness: 5.87 Lb/ft to 133 Lb/ft
API Spec. 5CT, API Spec. 5B, ISO 11960
Type of coupling and threading: BTC, LTC, STC and so on.
We have supplied the casing pipes to PDVSA, PERTAMINA, NIOC, CNPC for more than 100,000 tons during the past 5 years.
Principal Production Processes
❶ Steel making
Degassing and desulfurizing of the metal during the steelmaking process produce clean steel with low non-metalic inclusions and better surface finish.
❷ Hot Rolling
Advanced hot rolling results in hot coil with a fine grain structure and high dimensional accuracy.
❸ Spiral Looper
The spiral looper supplies a steady feed of coil downstream to the continuous edge milling, pipe forming and welding stands.
❹ Forming Stands
Heavy duty stands accurately form the incoming coil into pipe having a wide range of wall thickness and outside diameter.
“Welding Condition Monitoring and Controling System”, produces high quality welds. Seams are
inspected by ultrasonic testing.
❻ Welded Seam Heat Treatment
Heat treatment in the welded zone stabilizes the microstructure and gives it the same physical properties as the base metal. The exact seam position is determined by optical sensors for seam heat treatment, and ultrasonic and hydrostatic testing.
❼ Non-destructive Testing
Every length and entire surface of each Pipe is subjected to a full line-up of non-destructive tests.
❽ Automatic Inspection
Every pipe is given a comprehensive check using automatic inspection equipment.
❾ Monitoring and Tracking System
Pipe is monitored and tracked at every stage of production by on-line computers. All manufacturing data is stored by computer and can be made available in any form required by the customer.
Automatic stencilling and die-stamping machines identify and clearly mark every pipe.
Advanced lathes cut high precision threads to order. Connectors for large O.D. casings are also available. The use of thread protectors is recommended to prevent damage to theconnectors during handling, loading and pipe rolling.
Edit by Ms. Vicky Wang of KRM/BSW
Contact us directly by:
Tel / Whatsapp: 0086-13931786988