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5 1/2 API Spec 5B Round Casing Thread Gauge CSG LCSG Oilfield Casing Thread Inspection Gauge Manufacturer

5 1/2 API Spec 5B Round Casing Thread Gauge CSG LCSG Oilfield Casing Thread Inspection Gauge Manufacturer

  • Highlight

    API Spec 5B casing thread gauge

    ,

    round casing thread inspection gauge

    ,

    oilfield casing thread gauge manufacturer

  • Warranty
    One Year
  • Measurement
    API Round Casing(CSG,LCSG) Thread Gauge
  • Standard
    API Spec 5B
  • Material
    GCr15
  • Size
    5 1/2 (CSG, LCSG)
  • Outer Dia
    139.70
  • Feature
    Durability And Accuracy
  • Applicable Medium
    Mud, Water, Natural Gas
  • Customized
    Acceptable
  • Place of Origin
    Shaanxi, China
  • Brand Name
    KM
  • Certification
    ISO DIN GB RoHS
  • Delivery Time
    50000pieces/Month
  • Payment Terms
    T/T,L/C,D/P,D/A,PayPal,etc.

5 1/2 API Spec 5B Round Casing Thread Gauge CSG LCSG Oilfield Casing Thread Inspection Gauge Manufacturer

5 1/2 API Spec 5B Round Casing Thread Gauge CSG LCSG Oilfield Casing Thread Inspection Gauge Manufacturer


Description:

API Spec 5B CSG / LCSG Round Casing Thread Gauges mainly used for the dimensional inspection and quality verification of oilfield casing round threads. Fully manufactured in strict accordance with the latest API Spec 5B petroleum industry standard, these thread gauges adopt premium GCr15 bearing steel material with high hardness of 60-63HRC, delivering excellent wear resistance, high structural stability and long service life. All gauge tooth profiles, pitch diameters and thread tolerances are precisely calibrated to fully meet petroleum industry inspection requirements, ensuring accurate and consistent measuring results in harsh oilfield working environments.

 

API CSG & LCSG thread gauges are widely used in petroleum & oil well industry to verify the thread profile, dimension and assembly quality of oil casing pipes. Suitable for oil pipe factory, oilfield inspection laboratory and third-party testing organizations.

 

Available with master gauge or working gauge, thread plug gauge, thread ring gauge or full set. Every gauge comes with calibration certificate. Each finished gauge is equipped with an official calibration certificate to ensure standardized and traceable measurement results.


Quick Detail:

1. Standard: API Spec 5B
2. Material: GCr15
3. Hardness: 60-63HRC
4. Come with calibration certificate.


When you order, please specify the following information:
1. Type and Sizes of connections
2. Master gauge or working gauge
3. Ring or plug or set


Specification:

Size

Outer Dia

Pitch per 25.4mm

Taper

Form Angle

4 1/2 (CSG, LCSG)

114.30

3.175(8)

1:16

60°

5 (CSG, LCSG)

127.00

3.175(8)

5 1/2 (CSG, LCSG)

139.70

3.175(8)

6 5/8 (CSG, LCSG)

168.28

3.175(8)

7 (CSG, LCSG)

177.80

3.175(8)

7 5/8 (CSG, LCSG)

193.68

3.175(8)

8 5/8 (CSG, LCSG)

219.08

3.175(8)

9 5/8 (CSG, LCSG)

244.48

3.175(8)

10 3/4 (CSG, LCSG)

273.05

3.175(8)

11 3/4 (CSG, LCSG)

298.45

3.175(8)

13 3/8 (CSG, LCSG)

339.73

3.175(8)

16 (CSG, LCSG)

406.40

3.175(8)

18 5/8 (CSG, LCSG)

473.08

3.175(8)

20 (CSG, LCSG)

508.00

3.175(8)


Applications:

Buttress casing working thread gauges are mainly used in the petroleum oil and gas industry for measuring

the thread of casings,tubing and pipelines.


Precautions:

1. It is not allowed to touch the working surface of the gauge with your hands, so as not to cause rust.

2. Inspect regularly to see if there is any damage, rust or deformation. If you find that the gauge begins to rust,

    you should put it in gasoline and soak it for a period of time, then take it out and wipe it carefully, and apply anti-rust oil.

3. Do not save the working surfaces of the two gauges together, otherwise the two working surfaces

    will be glued to each other, and the gauge will be unnecessarily damaged when separated by external force.

4. After used the threaded gauges, it should be wiped clean and stored under dry condition.


Packing & Shipping:

5 1/2 API Spec 5B Round Casing Thread Gauge CSG LCSG Oilfield Casing Thread Inspection Gauge Manufacturer
Company profile:

5 1/2 API Spec 5B Round Casing Thread Gauge CSG LCSG Oilfield Casing Thread Inspection Gauge Manufacturer


FAQ:

1) What standard do your CSG / LCSG casing thread gauges follow?
A: Our API round casing thread gauges comply with API Spec 5B.


2) What material are API CSG LCSG thread gauges made of?
A: Made of GCr15 bearing steel, hardness 60-63HRC.


3) Do you supply master gauge and working gauge?
A: Yes, master gauge and working gauge are both available.

Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

J
J*
Canada Mar 15.2026
NC35 rotary shouldered connection gauge is super accurate, it perfectly matches the petroleum industry’s high requirements!!