Apibtc coupling size

1. BTC (buttress thread coupling) trapezoidal thread coupling is an API standard thread connection type, which is commonly used in the connection of petrochemical pipes or tools, such as floating collar, guide shoe and pipe shoe used in cementing operation. The pitch is 8 teeth per inch and the tooth height is 1-1.2 mm. The external thread part 1 is designed with - 15 ° The end face shoulder 4 is connected with - 15 of internal thread part 2 after tightening ° Internal torque shoulder interference fit, after the internal and external threaded parts are tightened, at least one circle of threads closely fit, the top surface of thread teeth of threaded parts is parallel to the oil pipe axis, and the inner diameter D2 of internal thread 2 is approximately the same as that of external thread 1. Trapezoidal thread has excellent sealing performance, high connection strength and good anti torque make-up ability, so it can be used as an alternative to thickened thread or replace thickened thread in practical engineering

2.

Take a blockchain API tool that I am currently using as an example

previously, I occasionally found bctools , which can quickly and conveniently test and verify BTC and EOS blockchain API. At the same time, these API interface test network and main network can be verified on bctools ; If you are interested, you can go http://bctools.io Use it

at present, Apis on bctools seem to have the following types:

3.

1. BTC: chemical vocabulary

BTC is the abbreviation of (Trichloromethyl) carbonate. It is the abbreviation of a chemical substance, mainly composed of carbon, chlorine and oxygen. The chemical formula is c3cl6o3, which can be used as the substitute proct of highly toxic phosgene and diphosgene in the synthesis

BTC: enterprise abbreviation

BTC refers to BTC Yingqun enterprise from Taiwan, China, which is a large-scale high-tech enterprise developing and procing keyboard, mouse and recorder. BTC is famous for procing high-quality computer peripherals. BTC is the OEM keyboard and add-on card proced by famous brand EMPREX, ranking first in Taiwan, especially the third in the world

BTC: the concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was formally born on January 3, 2009. According to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system

BTC: engineering material

BTC (buttress thread coupling), full name of partial trapezoidal thread coupling, is an API standard thread connection type, which is commonly used in the connection of petrochemical pipes or tools, such as floating collar, guide shoe and pipe shoe used in cementing operation

5, BTC: e-commerce mode

BTC (business to customer) e-commerce is one of the categories of e-commerce by trading partners, that is, e-commerce of commercial institutions to consumers. This form of e-commerce is generally based on the network retail instry, mainly with the help of the Internet to carry out online sales activities. BTC is also known as B2C, B2C mode is the earliest e-commerce mode in China

4. No, these three are not compatible with each other and each has its own purpose
choose your own direction
the cost of developing an interface is not so high. Except for EOS, there is not much data to be chained, which is basically completed locally. As a top blockchain technology developer in China, weisanyun is still a good technology developer.

5. This is usdt trading, right? There is a minimum order limit for usdt trading pairs in general exchanges, which can't be less than 5usdt. The minimum limit for some exchanges is $10.

6. It's impossible to find a special miner. In fact, this thing is the same as other electrical appliances. If you go to the repair shop to repair the TV, computer and other electrical appliances, if it's not the damage of the components, it's just the wiring, peeling off of the components and other minor problems, which can be solved by ordinary people.

7. Surface casing 20 & quot; Density: 106.5ppf, steel grade: k-55, button type: BTC (partial trapezoidal thread coupling), run in 26 & quot; The borehole is 800 feet,
technical casing 13-3 / 8 & quot; Density: 54.5 & 68 PPF, steel grade: l-80, button type: BTC (trapezoidal thread coupling), 17-1 / 2 & quot; 4000 ft
technical casing 9-5 / 8 & quot; Density: 47 & 53.5 PPF, steel grade: l-80, button type: BTC (partial trapezoidal thread coupling), run in 12-1 / 4 & quot; Well bore 9000 ft,
reservoir casing 7 & quot; Density: 29ppf, steel grade: c-95, button type: BTC (partial trapezoidal thread coupling), running 8-1 / 2 & quot; The wellbore is 9600 feet

8. 94ppf is a pound, BTC is a trapezoidal buckle

9. Plate structure M-atx
plate size 24.4 cm x 19.3 cm
Power Interface 24 + 8
PCB specifications Small board