API 7K Spiral Drill Collar weights

FOB Reference Price:Get Latest Price
US $800-1,500 / Piece | 10 Piece/Pieces (Min. Order)
Supply Ability:
400000 Ton/Tons per Year
Port:
shanghai, qingdao, tianjin
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Overview
Quick Details
Standard:
API, API 5CT, API 5DP, API 5L
Grade:
API J55-API P110, API J55, API K55, API L80, API N80, API P110
Thickness:
6.35 - 20 mm
Section Shape:
Round
Outer Diameter:
114.3 - 508 mm
Place of Origin:
Shandong, China (Mainland)
Secondary Or Not:
Non-secondary
Application:
Oil Pipe
Technique:
Hot Rolled
Certification:
API
Surface Treatment:
Galvanized
Special Pipe:
API Pipe
Alloy Or Not:
Non-alloy
Packaging & Delivery
Packaging Details
steel bundle.
Delivery Time
30days,depends on the exact qty

 

API 7K Spiral Drill Collar weights

Spiral Drill Collars 3 1/8" 

1.sizes: 3-1/8 to 11 inches 
2.Material:AISI 4145H 
3.API Spec 7 

Full-length heat-treatment processes ensure that mechanical properties meet or exceed API Spec 7 requirements. Drill collar material and process traceability are maintained from receipt of mills’ certified raw material to completion of all the manufacturing. Serial numbers are die stamped on bar bodies. Drill collar thread roots, as well as elevator recess upper radius, are cold-rolled. Cold rolling creates a compressive recess upper radius stress condition that increases fatigue life by minimizing crack initiation. All tool joint connections are phosphate-coated or copper plated to improve resistance to corrosion. Optional slip and elevator recesses to improve handling efficiency and safety are also available.