API Thread Gauges are used for gaging API internal & external threads, manufactured according to API 5B, API 7-2 & API 11B standards, including working gages and master gages.

API working thread gauges include plug gauge and ring gauge. All of our working gauges will be inspected by master gauges after production and the corresponding Calibration Certificate will be provided together with thread gauges or separately couriered as clients' request.

Our thread gauges are mostly used to inspect the thread of tubing, casing, drill pipe, drill collar, line pipe, sucker rod & polished rod, etc.

The thread type includes EUE/UPTBG, NUE/TBG, BTC/BCSG, STC/CSG, LTC/LCSG, REG, IF, FH, NC, LP, NPT, etc.
 

1. All thread inspections after production;
2. All thread gauges will be supplied with a Calibration Certificate; 
3. 100 % customer satisfaction for Quality and Reliability;
4. Suitable for many kinds of thread and pipes;
5. Good package suitable for international transportation;
6. Fast lead time and sometimes some commonly used thread may be in stock.

 

Product Parameters

 

 

API Spec 5B (Plug Gauge & Ring Gauge)
	Normal Size		Thread
Applications	From	To	TPI	TPF
Casing - Round	4 1/2	13 3/8	8	3/4
Line Pipe	1/8	13 3/8	8-27	3/4
Tubing - Non Upset	1.050	3 1/2	10	3/4
	4	4 1/2	8	3/4
Tubing - External Upset	1.050	1.900	10	3/4
	2 3/8	4 1/2	8	3/4
Tubing - Integral Joint	2 3/8	4 1/2	10	3/4
Extreme Line Casing	5	7 5/8	6	1 1/2
	8 5/8	10 3/4	8	1 1/4

 

API Spec 7-2 (Plug Gauge & Ring Gauge)
	Normal Size		Thread
Applications	From	To	TPI	TPF
NC Connections	NC 10	NC 16	6	1 1/2
	NC 23	NC 50	4	2
	NC 56	NC 77	4	3
REG (Regular Rotary Shoulder Connections)	1	8 5/8	14-6	1 1/2, 2, 3
FH (Full Hole)	3 1/2	6 5/8	4-5	2, 3
IF (Internal Flush)	2 3/8	5 1/2	2	2

 

API Spec 11B
	Normal Size		Thread
Applications	From	To	TPI
Sucker Rods P2-P8 & B2-B6	1/2	1 1/8	10
Sucker Rods P1-P8 & B1-B6	1/2	1 1/8	10

 

1) How can I place an order?

A: You can contact us by email about your order details, or place an order online.

2) How can I pay you? 

A: After you confirm our PI, we will request you to pay. T/T and Western Union are the most usual ways we are using. 

3) What's the order procedure?

A: First we discuss order details and production details by email or TM. Then we issue you a PI for your confirmation. You will be requested to do prepaid full payment or deposit before we go into production. After we get the deposit, we start to process the order. We usually need 15-25days if we don't have the items in stock. Before production has finished, we will contact you for shipment details, and the balance payment. After payment has been settled, we start to prepare the shipment for you. 

4)How do you take care when your clients received defective products?

A: replacement. If there are some defective items, we usually credit them to our customer or replace them in the next shipment. 

5)How do you check all the goods in the production line?

A: We have spot inspection and finished product inspection. We check the goods when they go into the next step production procedure.