What is LTC thread?
LTC (Long Thread) type. It is also has a non-runout design of round thread. Each has eight round crested thread per inch, which is same as the STC type. LTC thread is easy to process, good tightness, strong connection strength, simple maintenance and low price. Each has eight round crested threads per inch.
What is the difference between STC and LTC?
Each thread type is suited for a specific well condition. STC is a good choice for shorter length casing applications that do not involve high axial loads or bending. LTC is well suited for situations where some axial load is encountered but overall well conditions do not include extremes of temperature or pressure.
What is BTC in pipe?
BTC (Buttress threading) This thread is designed to improve axial tensile or axial compressive load capacity and to provide leakage resistance.
What does EUE thread stand for?
The API external-upset-end (EUE) tubing connection is widely used because it is a good, serviceable connection in most wells. The EUE joint has a designed joint strength in tension and pressure strength greater than that of the pipe body and, therefore, is considered a 100% joint efficient connection.
How many types of threads are there?
Six Most Common Types of Threads NPT/NPTF. BSPP (BSP, parallel) BSPT (BSP, tapered) metric parallel.
What is the angle of acme threads?
29°
Thread angle
| Name | Code | Angle |
|---|---|---|
| Acme thread | 29° | |
| Metric trapezoidal threads | Tr | 30° |
| Buttress threads | S | 45° |
| German buttress threads | S | 30° |
What is STC and BTC?
BTC: “Buy To Close” – Buy in order to cover (close) an already-open short position. STC: “Sell To Close” – Sell in order to exit and already-open long position.
What is TBG thread?
Tubing thread gages are the comprehensive measuring tools for checking threads of tubing. Two types: non-upset tubing thread gauges (TBG) upset thread gauges (UP TBG). 4.Casing thread gauges. Casing thread gages are the comprehensive measuring tools for checking threads of casings.
Is EUE a premium connection?
Connection types For low pressure wells API 8RD thread connections have been the standard in the tubing strings. Non upset has proved more effective than upset (EUE) 8 RD tubing. Connections provided with metal-to-metal seals are commonly referred to as Premium connections.
What are the four types of threads?
However, threads and connections are divided into six main types:
- UN/UNF.
- NPT/NPTF.
- BSPP (BSP, parallel)
- BSPT (BSP, tapered)
- metric parallel.
- metric tapered.
What kind of thread is used for BTC?
BTC has a square thread with a flat root and crest, a runout design, and five buttress threads per inch. Each thread type is suited for a specific well condition. STC is a good choice for shorter length casing applications that do not involve high axial loads or bending.
What kind of threads do STC and LTC have?
STC and LTC both feature a non–runout design of round threads, each with eight round crested threads per inch. BTC has a square thread with a flat root and crest, a runout design, and five buttress threads per inch.
How many buttress threads are in a STC thread?
STC and LTC both feature a non–runout design of round threads, each with eight round crested threads per inch. BTC has a square thread with a flat root and crest, a runout design, and five buttress threads per inch. Each thread type is suited for a specific well condition.
How big is the API threading for OCTG?
We provide API and premium threading of OCTG , ranging in size from 3-1/2” to 20” outside diameter. Tubing and casing threading services encompass bucking, torque turn, saw cutting, and full-length drift.