The hot-rolled precision seamless steel pipe production line adopts advanced Arccu-Roll rolled tube set to produce casing, tubing, drill pipe, pipeline and fluid piping, etc.
Integral heavy weight drill pipe is made from AISI 4142H-4145H alloy structural steel. The manufacturing technique strictly performs SY/T5146-2006 and API SPEC 7-1 standards.
The epoxy fiber reinforced plastic HP surface lines and downhole tubing are produced in strict conformance with API specifications. The annual output comes to 2000km in length with diameter ranging from DN40 to DN300mm. The epoxy FRP HP surface line has standard API long round thread connections in composite material, whose wear resistance increases pipe working life.
The drill collar is made from AISI 4145H or finish rolling structural alloy steel, processed as per API SPEC 7 standard.
Tubing and casing are produced in accordance with API specifications. The heat-treatment lines are completed with advanced equipments and detecting instruments that can handle casing in 5 1/2″ to 13 3/8″ (φ114~φ340mm) diameters and tubing in 2 3/8″ to 4 1/2″ (φ60~φ114mm) diameters.