

●PROFESSIONAL thread gauges' manufacturer
●china api thread gages'supplier
●export gages'and measurements to worldwide
SWTG Thread Gages: Precision Engineered for Superior Performance

SWTG, an abbreviation for Sowant Gage, is the premier brand of precision thread gages manufactured by Sowant Precision Gage Co., Ltd. Renowned for uncompromising quality and exceptional accuracy, every SWTG thread gage is engineered to meet the most stringent international standards, providing reliability and trust in critical measurement applications.
Unmatched Manufacturing Excellence
The superiority of SWTG thread gages is rooted in a rigorous manufacturing process:
Premium Materials: Each gage is crafted from strictly qualified tool steel, ensuring inherent stability and longevity.
Advanced Heat Treatment: A meticulous heat-treating process guarantees optimal wear resistance and dimensional stability, achieving a superior hardness of 56-63 HRC.
Precision Machining: State-of-the-art CNC machinery creates flawless thread forms with exceptional geometric accuracy.
Final Verification: High-precision thread scanning instruments are employed for final inspection, certifying that every gage meets its specified tolerances for perfect thread fit and function.
The result is a product line characterized by an excellent finish, high quality, and unparalleled precision.

Comprehensive Customizable Product Range
SWTG specializes in the custom manufacturing of a wide array of thread gage types, including but not limited to:
ASME Thread Gages (e.g., UN, UNJ, NPT, NPTF)
ISO Metric Thread Gages
ACME Thread Gages
STUB ACME Thread Gages
Buttress Thread Gages
API 5B Thread Gages
BCSG (Buttress Casing) Thread Gages
Product Specifications
Here is a glimpse into our extensive production capabilities:

30 Examples of UN Thread Plug Gage Specifications:
3.164-32UN-2A
3.250-28UN-2A
3.375-16UN-2A
3.500-13UN-2A
3.750-10UN-2A
10.000-8UN-2A
10.250-7UN-2A
10.500-6UN-2A
10.750-5UN-2A
20.000-4.5UN-2A
20.250-4.5UN-2A
20.500-4UN-2A
20.750-4UN-2A
3.000-4UN-2A
3.500-12UN-2A
4.000-4UN-2A
4.500-4UN-2A
5.000-4UN-2A
1.190-32UN-2A
1.312-24UN-2A
1.437-20UN-2A
1.625-11UN-2A
3.875-9UN-2A
1.125-7UN-2A
1.375-6UN-2A
1.625-5UN-2A
1.875-5UN-2A
2.125-4.5UN-2A
2.375-4UN-2A
2.625-4UN-2A
30 Examples of ACME Thread Plug Gage Specifications:
4.250-16ACME-2G SWTG thread gauges made in China w/calibration report.
4.375-12ACME-2G SWTG thread gauges made in China w/calibration report.
4.500-10ACME-2G SWTG thread gauges made in China w/calibration report.
4.750-6ACME-2G SWTG thread gauges made in China w/calibration report.
1.000-5ACME-2G SWTG thread gauges made in China w/calibration report.
1.250-5ACME-2G SWTG thread gauges made in China w/calibration report.
1.500-4ACME-2G
1.750-3ACME-2G
2.000-3ACME-2G
2.250-3ACME-2G
2.500-3ACME-2G
2.750-2ACME-2G
3.000-2ACME-2G
3.5-6ACME-2G
4.000-2ACME-2G
5.312-16ACME-2G
5.437-10ACME-2G
5.625-8ACME-2G
5.875-6ACME-2G
5.125-5ACME-2G
5.375-4ACME-2G
1.625-4ACME-2G
1.875-3ACME-2G
2.125-3ACME-2G
2.375-3ACME-2G
2.625-2ACME-2G
2.875-2ACME-2G
3.250-2ACME-2G
3.750-2ACME-2G
4.250-2ACME-2G
30 Examples of API 5B Thread Gage Specifications:
BTC 1.050
LTC 2.375
STC 2.875
NU 4.500
EUE 2.875
API Line Pipe 0.840
API Line Pipe 1.050
API Line Pipe 1.315
API Line Pipe 1.660
API Line Pipe 1.900
API Line Pipe 2.375
API Line Pipe 2.875
API Line Pipe 3.500
API Line Pipe 4.000
API Line Pipe 4.500
API Line Pipe 5.000
API Line Pipe 5.563
API Line Pipe 6.625
8RD BTC
10RD BTC
8RD LTC
10RD LTC
4-1/2" FH
5-1/2" FH
6-5/8" FH
7-5/8" REG
8-5/8" REG
9-5/8" REG
10-3/4" REG
13-3/8" REG
The above lists represent only a small fraction of our manufacturing capabilities. For more products, detailed specifications, or to discuss your custom thread gage requirements, we enthusiastically await your consultation.
Choose SWTG for precision you can measure and quality you can trust.
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