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Size Range: 2-3/8 ~ 20 in

Thread: BTC, STC, LTC, EUE, NUE, NC, IF, FH, REG, PH-6, XT, HT-PAC, etc.

Type: Heavy Duty or light

Material: HDPE, steel, steel-plastic

Color: Customized

Application: To protect the thread and connection of casing, tubing, drill pipe during transportation and loading and unloading

 

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

API Thread Gauges are used for gaging API internal & external threads, manufactured according to API 5B, API 7-2 & API 11B standard, 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 corresponding Calibration Certificate will be provided together with thread gauges or separately couriered as clients’ request.

Our thread gauges are mostly used to inspect 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.

Thread Gauge Drawing

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Methods of Payment & Quality Control
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Buyer’s Guide

Please send us your inquiry with detail item description or with Model number. If there is no packing demand we take it as our regular exported standard packing. We will offer you an order form for filling. We will recommend you the most suitable model according to information you offered.

We can give you really high quality products with competitive price. We have a better understanding in Chinese market, with us your money will be safe.

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Lake Petro is located in Dongying City, which is famous for Shengli Oilfield and the largest manufacturing hub of petroleum equipment in China. Following the principle of “quality first, science and technology innovated, people oriented”, every Lake Petro person is sparing no effort to provide the customers with best products and services. Our products are based on advanced production line and testing equipment, our products are designed and manufactured according to certification of API, ISO, GOST, etc.