API 5B LCSG CSG Thread Gauges Working & Master Gauge for
Oilfield Casing Thread Verification
Description:
API Spec 5B 11 3/4 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:
Company profile:
FAQ:
1) What are API CSG LCSG thread gauges used for?
A: For inspection of oilfield casing round thread dimension and
assembly quality.
2) Who uses API Spec 5B casing thread gauges?
A: Oil pipe factories, oilfield labs and third-party testing
organizations.
3) What details do I need to provide when placing an order?
A: Please specify connection type & size, gauge type
(master/working), ring/plug/set.
