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#1 Supplier of API Thread Gauges in China

Precision-engineered API gauges, calibration services, and drilling equipment trusted by over 800 customers across 36 countries.

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Who Are We?

Shanghai Jingoo Petroleum Apparatus Co., Ltd. is the first specialized supplier of API gauges and professional calibration services in China. With over 14 years of experience, we have served more than 800 satisfied customers in 36 countries.

We are a certified material supplier for industry leaders including Schlumberger, China National Petroleum Corporation, GE Oil & Gas, ITS UAE & UK, Smith International, Weatherford, and Hilong Group.

14+
Years in Business
800+
Happy Customers
36
Countries Served
43
Years Manufacturing
Manufacturing Facility Precision Equipment Quality Control Calibration Lab

Our Manufacturing Facility

Our manufacturing facility is a subsidiary of China National Petroleum Corporation (CNPC) and is the largest R&D and production base for oilfield thread gauges in China. Established in the 1970s, we were the first enterprise in China awarded API Spec 7-2 and API Spec 5B certifications.

Operating under ISO9001 and API Q1 quality standards, our 250,000 sqm facility houses cutting-edge equipment including USA Drake CNC Thread Grinders, German Buderus grinders, Zeiss CMMs, and Holland MSXL400 inspection systems. The workshop maintains a constant temperature of 20℃±1℃ for precision grinding and measurement.

4,000+
Sets Annual Capacity
250,000
Square Meters Facility
1970s
Since Inception

Our Products

High-precision API thread gauges and inspection tools for oil & gas applications

NON-UPSET TUBING (NUE/TBG)

NON-UPSET TUBING (NUE/TBG)

API Spec 5B Gauges

  • Precision thread inspection
  • Compliant with API 5B
  • Plug & ring gauge sets
UPSET TUBING (EUE/UPTBG)

UPSET TUBING (EUE/UPTBG)

API Spec 5B Gauges

  • External & internal threads
  • High wear resistance
  • Full inspection capability
CASING SHORT-THREAD (CSG)

CASING SHORT-THREAD (CSG)

API Spec 5B Gauges

  • Short thread connection
  • API 5B compliant
  • Durable carbide tips
BUTTRESS CASING (BCSG)

BUTTRESS CASING (BCSG)

API Spec 5B Gauges

  • Buttress thread form
  • High torque capability
  • Precision ground
NUMBERED CONNECTIONS (NC)

NUMBERED CONNECTIONS (NC)

API Spec 7-2 Gauges

  • NC23 to NC70 sizes
  • Rotary shouldered
  • Full PD inspection
REGULAR ROTARY (REG)

REGULAR ROTARY (REG)

API Spec 7-2 Gauges

  • API 7-2 compliant
  • High pressure sealing
  • Precision fit
FULL HOLE (FH)

FULL HOLE (FH)

API Spec 7-2 Gauges

  • Full bore connection
  • Optimized flow path
  • High strength
INTERNAL FLUSH (IF)

INTERNAL FLUSH (IF)

API Spec 7-2 Gauges

  • Flush internal diameter
  • Smooth flow path
  • API 7-2 standard
Sucker Rod Gauges

Sucker Rod Gauges

API Spec 11B Gauges

  • API 11B compliant
  • Precision thread check
  • Durable construction
MRP Crest Diameter Gages

MRP Crest Diameter Gages

Casing and Tubing Inspection

  • Crest measurement
  • High accuracy
  • Repeatable results
Thread Lead Gages

Thread Lead Gages

Casing and Tubing Inspection

  • Lead error detection
  • Precision comparison
  • Calibration traceable
Thread Taper Gages

Thread Taper Gages

Rotary Shouldered Connection

  • Taper measurement
  • API 7-2 compliant
  • Digital & analog options

Our Advantages

Why customers choose Jingoo API Gage

Good Quality

43 years of manufacturing experience with advanced equipment. Strict adherence to ISO9001, API Q1, API 5B & 7-2 specifications ensures unmatched precision and durability.

Excellent Price

Our gauges are 20%-30% cheaper than similar international products without compromising on quality, giving you superior value.

Ready Stock

Powerful manufacturing capacity ensures most gauges are in ready stock for fast delivery worldwide.

3rd-party Calibration

Partnered with a national-level lab accredited to ISO 17025:2005 by CNAS. Calibration traceable to NIM/NIST and valid for API audit.

Technical Support

Our team works with calibration experts to solve any issues you may encounter during gauge usage.

Global Service

Serving over 800 customers in 36 countries with reliable logistics and responsive communication.

800+
Happy Customers
36
Countries Served
43
Years Experience
4,000+
Gauges/Year

Frequently Asked Questions

Are your gauges API certified?

Yes, all our gauges are manufactured and inspected according to API Spec 5B and API Spec 7-2. Our facility was the first in China to receive API certification for these specifications.

Do you provide calibration certificates?

Yes, all gauges come with third-party calibration certificates traceable to NIST/NIM. Our calibration partner is ISO 17025:2005 accredited by CNAS, making the certificates valid for API audits.

What is your delivery time?

For standard gauges in stock, we can ship within 3-5 business days. Custom orders typically take 15-20 days depending on complexity.

Can you manufacture custom gauges?

Yes, we have extensive experience in custom gauge design and manufacturing. Our engineering team can work with your specifications to develop specialized inspection tools.

What payment methods do you accept?

We accept T/T (Telegraphic Transfer), L/C (Letter of Credit), and Western Union. Payment terms can be discussed based on order volume and customer history.

Contact Us

Get in touch for product inquiries, technical support, or calibration services

Contact Information

+86-21-51098802
+86-21-51098801
sales@jingooapigage.com
info@jingooapigage.com
Room 103, Meilin Creative Park A3, #228 Banting Road, Songjiang District, Shanghai, China

Connect With Us

We respond to all inquiries promptly. For technical questions or custom requests, our engineering team is ready to assist.

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