BTC tubing

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.

I think bitcoin China is a reliable platform. It is the first and largest bitcoin trading platform in China. It is operated by Shanghai satuxi Network Co., Ltd. and was established on June 9, 2011. The team members are mainly from China, Silicon Valley and Europe

bitcoin world is based on credit, and Chinese brands of bitcoin have high credibility in the global bitcoin field

3. 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.

4. Specification: oil tubing 2-3 / 8 "- 4-1 / 2", end processing form nue, eue. Oil casing 2-3 / 8 "- 20" perennial spare oil casing, more than 1000 tons in stock, api5ct tubing, api5ct casing, oil pipe specification 26.67-114.3mm. Api5ct oil casing specification is 114.3-508mm. Material: h40.j-55, k-55, N-80, l-80, C-90, c-95, P-110, q-125, etc. There are STC (short round buckle), LTC (long round buckle), BTC (partial ladder buckle), VAM (wangba buckle) and other buckle types of api5ct oil casing. Api5ct oil casing length R1, R2, R3
from: China investment casting portal

5. 1. Wellhead specification 13-3 / 8 & quot; x 8-5/8" x 5-1/2" x 2-7/8"， These are casing specifications, and the last one is tubing specifications. 2. Casing head, wg-22,11 & quot; 3M Flanged Top x 8-5/8" SOW Bottom,w/(2) 2" LP Outlets Wg-22 casing head, top 11 "- 3000psi, bottom 8-5 / 8 & quot; With two 2 "LP threads. 3. The adapter in the Christmas tree refers to a flange with variable diameter.

6. I'll make it simple.
there is a saying about who attacked first when it started at 3 a.m. on August 9.
South Ossetia formally belongs to Georgia. Since the collapse of the Soviet Union, Georgia can't manage South Ossetia at all, but South Ossetia is not satisfied and needs to go out independently! Behind South Ossetia is Russia, and many people have Russian passports. Russian legal citizens have peacekeeping troops in South Ossetia< However, the former Soviet Union of Georgia now wants to join NATO. It's trying to get closer to the West. Its 10000 troops have sent 2000 soldiers to Iraq to support the United States. Russia has been trying to make trouble for Russia for a long time! Behind him are the West and the United States<

this South Ossetia incident is Russia's retaliation against the West's instigation of Kosovo's independence, and also a warning given in the face of NATO's eastward expansion! Georgia is not only about South Ossetia, but also about Abkhazia. Like South Ossetia, Georgia also wants to be independent. Russia is behind it< The total number of troops in Russia Georgia is 1.24 million-18000
tanks 22800-170
armored vehicles 15000-120
fighters 1390-10
helicopters 2565-11
artillery---- 24000 units ----- 100 units

in a place as big as Georgia, there is no strategic depth. In a few days, Lao maozi's half Armored Division will directly sweep his family!

7. 13 / 8 "casing PPF 68. Ft interview.. 850 N80 BTC 95 / 8" casing.. 5250ft BTC 47 ppt N80 19ppf N80 BTC casing 5 "... 2500ft tubing 27 / 8 & quot; 6.5 - 7 PPF eve... 600 N80 9 FT

8. Let A1 be your data, then B1 input the following formula ( recommended):
= left (mid (trim (A1), searchb (& quot; m", TRIM(A1),1)+2,LEN(TRIM(A1))-SEARCHB(" m", TRIM(A1),1)+2),SEARCHB(" m", MID(TRIM(A1),SEARCHB(" m", TRIM(A1),1)+2,LEN(TRIM(A1))-SEARCHB(" m", TRIM(A1),1)+2),1)+3,LEN(MID(TRIM(A1),SEARCHB(" m", TRIM(A1),1)+2,LEN(TRIM(A1))-SEARCHB(" m", TRIM(A1),1)+2))-SEARCHB(" m", MID(TRIM(A1),SEARCHB(" m", TRIM(A1),1)+2,LEN(TRIM(A1))-SEARCHB(" m", TRIM(A1),1)+2),1)+3),SEARCHB(" & quot;, MID(MID(TRIM(A1),SEARCHB(" m", TRIM(A1),1)+2,LEN(TRIM(A1))-SEARCHB(" m", TRIM(A1),1)+2),SEARCHB(" m", MID(TRIM(A1),SEARCHB(" m", TRIM(A1),1)+2,LEN(TRIM(A1))-SEARCHB(" m", TRIM(A1),1)+2),1)+3,LEN(MID(TRIM(A1),SEARCHB(" m", TRIM(A1),1)+2,LEN(TRIM(A1))-SEARCHB(" m", TRIM(A1),1)+2))-SEARCHB(" m", MID(TRIM(A1),SEARCHB(" m", TRIM(A1),1)+2,LEN(TRIM(A1))-SEARCHB(" m", It's very difficult to see the above formula. But if the result is correct, I'll be given extra points. The idea is as follows:
first use trim (A1) to simplify the part with spaces into one space with spaces. In this way, you don't have to worry about entering two spaces. (for example, one of the first two spaces of B is removed)
Second, find the position where the first m appears, Use the mid function to cut off the data before the first mm; X 18.26mm B chamfered carbon steel seamless pipe & quot< (3) for the rest, look up the position where m appears, and then use the mid function to cut off the data before the second mm; B chamfered carbon steel seamless pipe< (4) check the location where the only space appears; B chamfered carbon steel seamless pipe & quot; The space position is 2)
⑤ use the left function to intercept the string before the space (B in the example)