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PDC Bit
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PDC Bit

( API 7-1, SY/T5164, ISO9001:2008 ) All PDC drill bits specified by the IADC code can be customized.
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Number of views:
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Product serial number
03
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Product model catalogue
Parameters
Product model selection reference

●Hengchang PDC Bit Product Catalog:

Common bit dimension

Optional blade

number

Optional main

cutting tooth diameter

mm

Optional nozzle

number

API thread type

Gauge length

mm

Common IADC code

in mm
3 1/2 88.9 3、4 8、13 3、4 2 3/8 REG 25.4~50.8 S142M142S132M132
3 5/8 92.08
4 5/8 117.5

3、4、5、

6

3、4、5、

6

2 7/8 REG

S123M123S142M142

S132M132S232M232

4 3/4 120.7
5 1/2 139.7 3 1/2 REG
5 7/8 149.2
6 152.4 13、16

S122M122S132M132S232

M232S223M223S233M233

6 1/2 165.1
7 1/2 190.5 4 1/2 REG
7 7/8 200.03
8 1/2 215.9

3、4、5、

6、7、8

13、16、19

3、4、5、

6、7、8

50.8~79.4

S232M232S223M223

S333M333S323M323

S433M433S423M423

S434M434S443M443S444

M444

8 3/4 222。3
9 1/2 241.3

4、5、6、

7、8

4、5、6、

7、8

6 5/8 REG

S123M123S232M232

S223M223S333M333

S334M334S324M324

S423M423S424M424

S434M434S443M443

S444M444

9 5/8 244.5
10 5/8 269.9
11 5/8 295.3
12 1/4 311。15

4、5、6、

7、8、9、

10、11、12

5、6、7、

8、9、10、

11、12

63。5~130。2

S323M323S324M324

S432M432S433M433

S423M423S424M424

S434M434S443M443

S444M444

13 5/8 346.1
14 3/4 374.7 7 5/8 REG
15 1/2 393.7

S434M434S433M433

S432M432S424M424

S423M423S422M422

16 406.4
17 1/2 444.5
26 660.4
 

 

 

 

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Heng Chang PDC bit type indication:

                                                                               A            B                                     C                                                D

                                                                 Example:            M    19    6    3    D  /  M  3  2  3

                                                                                                                                                ↓       ↓     ↓     ↓    ↓   

                                                                                                                                                  a            b         c          d        e

A:Manufacturer logoHeng Chang

B:Bit diameterepxressed as digit(integer or fraction) and is usually in inches。

C:Manufacturer type

a:Bit body material type

 ◆MMatrix body .

        The main body (blade, crown) is mainly made of cast tungsten carbide sintered, and then the composite sheet is welded to the main body. The carcass has the characteristics of erosion resistance and                wear resistance.

 ◆SSteel body

        The main body is made of alloy steel, processed by a CNC milling machine, and the surface is hardened and wear-resistant. It has the characteristics of low cost and repairability, and is suitable for the production of complex shapes and large-size drill bits.

bMain cutting teeth diameter: expressed as digit, unit in mm, 08= diameter 8mm; 13=diameter13mm; 16= diameter 16mm; 19= diameter 19mm

cBlade number 3…90=101=112=12。

d:Crown profile 1234small number stands for short profile, big number stands for long profile.

eAdditional features

 

  ◆D:Double row teeth

  ◆G:Enhanced gauge

  ◆H:Spiral blade

  ◆M:Mixed teeth

  ◆SStraight blade

 

D:IADC classification codeConsist of 1 letter and 3 digits。

 

First letter

Second-order digit

3rd-order digit

4th-order digit

Drill bit body type

Cutting tooth density codeequivalent number of teeth

Main cutting tooth diameter code

Bit crown profile height code

S

M

1

Sparse

≤30

1

>19mm

1

fishtail

Steel

Matrix

2

Medium

30<X≤40

2

19≥X>13mm

2

short

<58mm

 

3

Dense

40<X≤50

3

13≥X>8mm

3

medium

58≤X<114mm

4

Very dense

>50

4

≤8mm

4

long

>114mm

 

PDC bit type selection reference

Classification of formation hardness and bit type selection

Suitable formation

Compressive strength

Mpa

ROP

m/h

Recommended blade number

Recommended bit type

IADC code

Extreme soft: Viscous soft formation with low compresive strength, such as clay,siltstone and sandstone.

< 25

< 20

≤ 4

S/M112~S/M223

Soft: Soft formation with low compressive strength and high drillability, such as claystone, marlite, lignite and sandstone etc.

2550

1020

≤ 4

S/M222~S/M323

Medium soft: Soft to medium soft formation with low compressive strength and interlayer, such as claystone, marlite, lignite, sandstone, siltstone, anhydrite and tuff etc。

5075

515

5

S/M323~S/M433

Medium: Medium to hard formation with high compressive strength and thin abrasive  interlayer, such as mudstone, limestone and shale etc.

75100

26

5

S/M322~S/M433

Medium hard: Medium hard to hard formation with high compressive strength and medium abrasiveness, such as limestone, hard shale, anhydrite, sandstone and dolomite etc.

100150

1.53

67

S/M422~S/M444

Hard: Hard formation with high abrasive, such as limestone, dolomite, graywacke and flint etc.

150200

12

>7

S/M433~S/M444

 

 

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