Metalwork Petroleum Technology Co, Ltd.

The Non-magnetic heavy weight dill pipe are made of low carbon stainless steel and meet the requirements of API7-1
Size OD ID connection Body
�  mm in mm in Style OD Bevel diameter pin and box Upset
mm in Mm
center area Mm
End area
WJZ66-6 5/8FH-I 168.3 6 5/8 114.3 4 1/2 6 5/8FH 209.6 8 1/4 195.70 184.2 176.21
WJZ55-5 1/2FH-I 139.7 5 1/2 92.1 3 5/8 5 1/2FH 177.8 7 170.7 152.4 144.5
WJZ50-NC50-I 127.0 5 76.2 3 NC50 168.3 6 5/8 154.0 139.7 130.2
WJZ45-NC46-I 114.3 4 1/2 71.4 2 13/16 NC46 158.8 6 1/4 145.3 127.0 117.5
WJZ35-NC38-I 88.9 3 1/2 52.39 2 1/16 NC38 120.7 4 3/4 116.3 101.6 92.1
WJZ29-NC31-I 73.03 2 7/8 50.8 2 NC31 104.8 4 1/8 100.4 84.1

The spiral drill collars are made of 4145HMOD modified chromium-molybdenum alloy steel according to API Spec 7-1 . All threads can be phosphated,copperised or cold worked. All threads are machined with CNC Lathes-Double-Shouldered and a special thread, the max diameter of spiral drill collar is 14 inch.
Out diamete: 3 7/8"~ 14"(inch)
Depth of cut: 4.0 ~ 11.9 (mm)
Length: 9150+150(mm)
Standard size�?� for�?� drill collar
Connection # OD ID L mm DF
mm Bending strength ratio
mm in mm In
NC23-31 79.4 3 1/8 31.8 1 1/4 9150 76.2 2.57:1
NC26-35 88.9 3 1/2 38.1 1 1/2 9150 82.9 2.42:1
NC31-41 104.8 4 1/8 50.8 2 9150 or 9450 100.4 2.43:1
NC35-47 120.7 4 3/4 50.8 2 9150 or 9450 114.7 2.58:1
NC38-50 127.0 5 57.2 2 1/4 9150 or 9450 121.0 2.38:1
NC44-60 152.4 6 57.2 2 1/4 9150 or 9450 144.5 2.49:1
NC44-60 152.4 6 71.4 2 13/16 9150 or 9450 144.5 2.84:1
NC44-62 158.8 6 1/4 57.2 2 1/4 9150 or 9450 149.2 2.91:1
NC46-62 158.8 6 1/4 71.4 2 13/16 9150 or 9450 150.0 2.63:1
NC46-65 165.1 6 1/2 57.2 2 1/4 9150 or 9450 154.8 2.76:1
NC46-65 165.1 6 1/2 71.4 2 13/16 9150 or 9450 154.8 3.05:1
NC46-47 171.4 6 3/4 57.2 2 1/4 9150 or 9450 159.5 3.18:1
NC50-67 171.4 6 3/4 71.4 2 13/16 9150 or 9450 159.5 2.37:1
NC50-70 177.8 7 57.2 2 1/4 9150 or 9450 164.7 2.54:1
NC50-70 177.8 7 71.4 2 13/16 9150 or 9450 164.7 2.73:1
NC50-72 184.2 7 1/4 71.4 2 13/16 9150 or 9450 169.5 3.12:1
NC56-77 196.8 7 3/4 71.4 2 13/16 9150 or 9450 185.3 2.70:1
NC56-80 203.2 8 71.4 2 13/16 9150 or 9450 190.1 3.02:1
6 5/8 REG 209.6 8 1/4 71.4 2 13/16 9150 or 9450 195.7 2.93:1
NC61-90 228.6 9 71.4 2 13/16 9150 or 9450 212.7 3.17:1
7 5/8 REG 241.3 9 1/2 76.2 3 9150 or 9450 223.8 2.81:1
NC70-97 247.6 9 3/4 76.2 3 9150 or 9450 232.6 2.57:1
NC70-100 254.0 10 76.2 3 9150 or 9450 237.3 2.81:1
8 5/8REG 279.4 11 76.2 3 9150 or 9450 266.7 2.84:1
8 5/8REG 355.6 14 76.2 3 9150 or 9450 266.7 2.84:1

Detailed Product Description
drill collar
1)O.D: 2-3/8"-20"
2.Grade:J55 K55 N80 P110 ect
3.Thread :NU EU STC LTC BTC
4.Standard: API 5CT...
drill collar
Materials of the Non-magnetic drill collars are from chrome manganese, low carbon obtained by combining a proprietary chemical analysis and a rotary hammer process. The material is resistant to stress corrosion cracking, with high machine ability and no tendency to galling.
Magnetic permeability (when MPS=1105/4Nm) relative max �¼r:1.010.
Magnetic field gradient (hot spots) max: B 0.05micro tesla/100mm.
Place of Origin Beijing, China (Mainland)
Brand Name MTWK
Model Number various
Type Drill Collar
Machine Type Drilling Tool
Certification API
Material Chromium
Processing Type Forging
Use Well Drilling
Packaging Details standard export packing or according to seaworthy packing
Delivery Time 30 days
Supply Ability 100 Piece/Pieces per Month
Details:
Category Drilling Tool
Certifications
FOB Price
Min Order 1 Piece/Pieces as your order
Lead Time
Port tianjin
Terms L/C,T/T

The pipe body is in conformance in API 5DP with serious inspection in plant.
Tool Joints are made of AISI4137 premium alloy steel fully Q and T with IPSEN furnace.
All tool joints should be inspected at full length by fluorescence magnetic particle and ultrasonic method.
SIZE 5"
GRADE G105
LENGTH R2
PACKING STEEL PACKING IN BUNDLE
Details:
Category Drilling Tool
Certifications API5DP
FOB Price USD2322/TON
Min Order AS REQUEST
Lead Time STOCK
Port TIANJIN
Terms T/T
Capacity 500 PIECES PER MONTH

Kelly is the drive part of whole drill stem, it has two types, square kelly and hexagonal kelly and all of them are manufactured comfort to API Spec7-1 and SY/T6509-2000 criterion.
Our� Square& Hexagonal kelly are made from AISI 4145H modified alloy bars that are quenched and tempered full length. After such heat treatment, its brinell hardness can reach 285-341. Kelly end, drive cross-section and joint are all processed and tested comform to API criterion.

Integral heavy weight drill pipes are manufactured from AISI 4142H-4145H modified drill collar material , thick-walled pipe called integral heavy weight drill pipe was developed to provid a gradual transition from the heavy weight drill collars to the relatively light weight drill pipe. This intermediate weight pipe has a wall thickness of approximately, and it helps prevent stress concentration at the� top of the drill collars. It also allows you to drill at higher pms, reducing torque and differential pressure sticking. It is intended primarily for directional drilling. Because it bends easily, it simplifies directional control and�  minimizes connection fatigue problems common to high angle or horizontal drilling. The reduced number of pipe failures and increased drill stem service also make it appropriate for some straight hole applications.
Specification OD ID connection Body Weight
mm in mm in Style OD Inner and outer thread Upset
mm in Mmd
center area Mm
� End area
Type I�  (Length is 9300mm for one piece)
ZH-J66-6 5/8FH-I 168.3 6 5/8 114.3 4 1/2 6 5/8FH 209.6 8 1/4 195.70 184.2 176.21 965KG
ZH-J55-5 1/2FH-I 139.7 5 1/2 92.1 3 5/8 5 1/2FH 177.8 7 170.7 152.4 144.5 730KG
ZH-J50-NC50-I 127.0 5 76.2 3 NC50 168.3 6 5/8 154.0 139.7 130.2 700KG
ZH-J45-NC46-I 114.3 4 1/2 71.4 2 13/16 NC46 158.8 6 1/4 145.3 127.0 117.5 585KG
ZH-J35-NC38-I 88.9 3 1/2 52.39 2 1/16 NC38 120.7 4 3/4 116.3 101.6 92.1 370KG
ZH-J29-NC31-I 73.03 2 7/8 50.8 2 NC31 104.8 4 1/8 100.4 84.1 81.0 220KG
Type II�  (Length is 13500mm for one piece)
ZH-J50-NC50-II 127.0 5 76.2 3 NC50 168.3 6 5/8 154.0 139.7 130.2 945
ZH-J45-NC46-II 114.3 4 1/2 71.4 2 13/16 NC46 158.8 6 1/4 145.3 127.0 117.5 790

The six-party drill pipe is made from AISI4145HMOD alloy steel According to API Spec.7 -1. IT is formed by hot forged and fully heat-treated by intermediate frequency induction heat treatment or 20m horizontal optical resistance furnace to threads are phosphated, copperrized or cold worked.
  Standard size of hexagonal kelly;Each can reach a total length of 27 meters.
Kelly size Length drive section Length overall Length drive section
LD
Standard LD
Optional L
standard L
optional DFL
Across flate DC
Across cornere DCC
Across cornere Rc
Radlue Rcc
Radlue Wall thickness eccentric bore

76.2 3 11280 12190 76.2 85.7 85.73 6.4 42.9 12.1
88.9 3 1/2 11280   12190 88.9 100.8 100.0 6.4 50.0 13.3
108.0 4 1/4 11280 15540 12190 16460 108.0 122.2 121.4 9.9 60.7 15.9  
133.4 5 1/4 11280 15540 12190 16460 133.4 151.6 149.86 9.9 75.0 15.9  
133.4 5 1/4 11280 15540 12190 16460 133.4 175.4 171.45 15.9 85.7 15.88
152.4 6 11280 15540 12190 16460 152.4 173.0 173.02 9.5 86.5 15.9  
152.4 6 11280 15540 12190 16460 152.4 173.0 173.02 9.5 86.5 15.9  


Upper box connection
Thread size and style LF O.D. Bevel diameter
Standard optional DU
standard DU
optional LU DF
Standard DF
optional
6 5/8 REG 4 1/2 REG 196.9 146.1 406.4 186.1 134.5
6 5/8 REG 4 1/2 REG 196.9 146.1 406.4 186.1 134.5
6 5/8 REG 4 1/2 REG 196.9 146.1 406.4 186.1 134.5
6 5/8 REG 196.9   406.4 186.1  

Lower pin connection I.D.

Label O.D. LL DF
Bevel diameter

NC26 85.7 508 82.9 31.8  
NC31 104.8 508 100.4 44.5
NC38 120.7 508 116.3 57.2
NC46 158.8 508 145.3 71.4
NC50 161.9 508 154.0 71.4
5 1/2 FH 177.8 508 170.7 82.6
NC56 177.8 508 171.7 82.6

Work roll, backup roll, straightening roll, embossing roll, etc. Machining capacity 1.6m in diameter, total length 10m, and roll surface length 6m.

Product Basis: Machining according to the given drawings
Product Property: Machining Forgings
Materials: According to customer requirements
Product machining equipment: Machining Specifications: Diameter: 80 - 2500, length 20m.
Processing Equipment: High-precision CNC lathes, CNC milling machine, CNC boring machine, CNC pipe threader, grinding machines and other supporting processing equipment.
Machining Capacity: Machining main shaft, gear shaft, eccentric shaft, spline shaft, mandrel, pull rod, wind motor shaft and other shafts. Machining capacity: diameter 2.5m, total length 20m.