Drill Collars
Our drill collars are made of 4145H modified chromium-molybdenum alloy steel acc. to API Spec.7 and SY/T5144. All threads are phosphated,copperized or cold worked. All Connections are equipped with pressed steel thread protectors. All threads are machined with CNC Lathes-Double-shouldered and special threads,the max spiral drill collars 14 inch.
ZYSCO has produced drilling tools for 30 years and ownsthe full product steel making, forging, machining, and heattreatment lines for drilling tools.
Send product request
Other supplier products
 |
Non-Magnetic Drill Collar | ZYSCO has produced drilling tools for 30 years and owns the full product steel making, forging, machining, and heat treatment lines for drilling to... |
 |
Non-Magnetic Drill Pipe Pressure | The Non-Magnetic Drill Pipe Pressures aremade of low-carbon stainless steel and conform to the requirements of API 7-1 and SY/T5144. Products can a... |
 |
EVA | EVA (Ethylene-Vinyl Acetate Copolymer) is a crucial downstream ethylene product, synthesized through copolymerization of ethylene and vinyl acetat... |
 |
Pipe Mould | ZYSCO startedto produce pipe mould for ductile iron casting machine since 1998. We can provide the pipe moulds such as T-type, S-type, N-type and ... |
 |
Mandrel Bar | Type and size: φ90mm~φ500mm,for 18.5m long or less, with buttress threading per API 5B, 2 3/8",2 7/8",3 1/2", 4 1/2",5",5 1/2",6 5/8",7 5/8... |
Same products
 |
Precision Robotic Components & Conductive Touch Metal Parts, RM001 Metal Development Series | Seller: HuntWave Industrial Co., Ltd. | Our company specializes in the development, CNC machining, and production of precision robotic me... |
 |
Instrument Castings | Seller: Hebei Grande Precision Machinery Co.,Ltd | Instrument components used in aerospace, energy, petrochemical, medical, and industrial equipment... |
 |
Human Implant Castings | Seller: Hebei Grande Precision Machinery Co.,Ltd | Human implants demand the highest level of accuracy, consistency, and safety. At the intersection... |
 |
Pump and Valve Castings | Seller: Hebei Grande Precision Machinery Co.,Ltd | Pump and valve castingsare crucial components of fluid control equipment such as pumps and valves... |
 |
foam agent for concrete | Seller: Yantai Chilung Construction & Energy-saving Technology Co., Ltd. | Used for manufacturing CLC lightweight concrete. |
