API7-1 Drill Collars/Non-Magnetic Drill Collar Spiral Drill Collar Nmdc

Price $5000.00 Compare
Min Order 1 Piece
Shipping From Shandong, China
Popularity 234 people viewed
Quantity
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Dongying City Kenli District Jinxiu Petroleum Machinery Co., Ltd

VIP   Audited Supplier 3 years
Profile Certified by SGS/BV
3-1/8---11inch
3 Years
3 Years
CNC Milling
Polishing
Atmospheric Pressure
Alloy
API7-1 7-2
API Reg API If Nc
9140mm 9450mm
Arnco 350xt or Other
AISI 4154h
P530 P550
JX
Steel Support
3-1/8inch---11inch
China
8431431000
Product Description
Product Description

Drill Collars are integral heavy-wall joints that are manufactured from a solid bar of modified alloy steel. The solid bars are quenched and tempered to obtain the required mechanical properties, then trepanned, drifted and threaded. All drill collars are heat-treated with hardness within 285 to 341 BHN, which are guaranteed one inch below the surface of the pipe.

Features

1. Hardness range of 285 to 341 BHN and a charpy impact value of 40ft/lbs are guaranteed for evenly distributed 16 points in any cross sections at room temperature.

2. Connections as phosphate coated father machining to protect the threads from corrosive elements and to prevent galling upon initial make -up. Thread roots are cold rolled on API and H0-90 connections.

3. Pressed steel thread protectors are supplied to all drill collar that are equipped with standard connections.

4. Manufactured strictly according to API standard.

5. Widely used in oil, gas, HDD and geothermal field.

 

Product Parameters

 

Size
(in)
O.D
(mm)
I.D.
(in)
CodeThreadLength
(mm)
Weight
(kg)
3 1/879.41-1/4NC23-31NC239140298
3 1/288.91-1/2NC26-35NC269140364
4 1/8104.82NC31-41NC319140/9450474/490
4 3/4120.62NC35-47NC359140/9450674/697
51272-1/4NC38-50NC389140/9450725/749
6152.42-1/4NC44-60NC449140/94501125/1163
6152.42-13/16NC44-60NC449140/94501022/1056
6 1/4158.82-1/4NC44-62NC449140/94501237/1279
6 1/4158.82-13/16NC46-62NC449140/94501134/1172
6 1/2165.12-1/4NC46-65NC469140/94501352/1398
6 1/2165.12-13/16NC46-65NC509140/94501249/1291
6 3/4171.42-1/4NC46-67NC469140/94501471/1521
7177.82-1/4NC50-70NC509140/94501597/1651
7177.82-13/16NC50-70NC509140/94501494/1545
7 1/4184.22-13/16NC50-72NC509140/94501625/1680
7 3/4196.82-13/16NC56-77NC569140/94501895/1960
8203.22-13/16NC56-80NC56 or 6- 5/8REG9140/94502040/2109
8 1/4209.62-13/166-5/8REG6-5/8REG9140/94502188/2263
9228.62-13/16NC61-90NC619140/94502658/2748
9 1/2241.32-13/167-5/8REG7-5/8REG9140/94502954/3054
9 3/4247.63NC70-97NC709140/94503127/3234
102543NC70-100NC709140/94503308/3421
11279.438-5/8REG8-5/8REG9140/94504072/4210
Mechanical properties:
<7 inch Drill Collar: Yield Strength758MPa, Tensile Strength965MPa, Four times elongation 13%, Impact energy Ak54J (Single impact work≥47J, Average≥54J), Hardness range: 285HB~341HB
7inch Drill Collar: Yield Strength≥689MPa, Tensile Strength≥931MPa, Four times elongation≥13%, Impact energy Ak54J (Single impact work≥47J, Average54J), Hardness range 285HB~341HB
Drill collar can be customized as per customer's design.
Detailed Photos

 

drawing sheet

machining process

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