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API Spec 7-1 Standard Drill Collar 6-1/4" Od AISI 4145
US$1,500.00
10 Pieces
Product profile
Customization
AvailableAfter-sales Service
WarrantyWarranty
1 YearModel NO.
differentManufacturing Process
StampingSurface Treatment
Sand BlastOperation Pressure
Atmospheric PressureMaterial
Non-MagCondition
Brand NewQuality
ReliableWork
OilfieldLength
R2Transport Package
FrameSpecification
differentTrademark
GOLDENMANOrigin
Shandong, ChinaKey features
Anti-Sticking Spiral Design: Three right-hand spiral grooves reduce contact area by 25-40%, preventing differential sticking.
High-Strength Alloy Steel: Made from AISI 4145H chromium-molybdenum steel with hardness of 285-341 BHN for high yield strength.
API Spec 7-1 Compliance: Manufactured to meet international standards including API Spec 7-1 and SY/T5144.
Weight Optimization: Approximately 4% lighter than smooth drill collars, improving drill string weight profile management.
Versatile Connection Types: Supports various connections from NC23 to 7 5/8 REG, fitting multiple drill string configurations.
Customization Available: ODM and OEM services available; customization from samples is supported.
1 Year Warranty: Comprehensive 1-year warranty coverage for after-sales service assurance.
Low MOQ for Orders: Minimum Order Quantity is just 1 Pc, allowing flexible purchasing for small batches.
Company profile
CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 18 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.73h
About Our Factory & Business Background
AddressDongying, Shandong, China
Plant Area565 square meters
Number of Employees21
Registered Capital10,000,000 RMB
Terms of PaymentT/T, D/P, Western Union, PayPal, LC, Small-amount payment
International Commercial Terms(Incoterms)FOB, CIF, EXW, CFR
Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays
Minimum Order Quantity1 Pc
Supply Chain Partners40
Our Production Capability & Technical Expertise
Main ProductsDrill Pipe; Heavy-Weight Drill Pipe; Drill Collars; Annular Bop
QA/QC inspectors1 people
Inspection Type for Finished ProductsRandom inspection(Visual inspection)
Inspection Method for Finished ProductsHave instruction but no written records
R&D Engineers2 people
Traceability of Raw MaterialsNo
Own BrandYes
Our Industry Experience & Global Business Record
Year of Establishment2006-03-09
Main MarketsAfrica
Repeat Buyers Choice50%~80%
Annual Export Revenue32,215,943 RMB
Number of Foreign Trading Staff12
Overseas Agent/BranchNo
New Products Launched in Last yearNo
Product Q&A
Q:What is the main function of the Spiral Drill Collar?
A:
It provides weight on the bit for drilling and stabilizes the drill string while reducing the risk of differential sticking through its spiral groove design.
Q:What material is used to manufacture this drill collar?
A:
It is manufactured from high-strength AISI 4145H chromium-molybdenum alloy steel, heat-treated for uniform toughness.
Q:How does the spiral design help in drilling operations?
A:
The spiral grooves reduce the contact area with the wellbore by approximately 25-40%, effectively minimizing the risk of differential pressure sticking.
Q:What are the available connection types?
A:
Common connection types include NC23 to NC31, NC31 to NC38, NC38 to NC46, NC46 to NC50, NC50 to NC56, 6 5/8 REG, and 7 5/8 REG.
Q:Is customization available for this product?
A:
Yes, ODM and OEM services are available, and customization from samples is supported.
Send Inquiry
*To:
Goldenman Petroleum Equipment Co., Limited
Goldenman Petroleum Equipment Co., Limited*Content:
Supplier replies will be sent to your registered email
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