Q:Dn is 250, Pn25 flange, what is the hole distance?

Flange center hole distance d1=370mmFlange diameter D=425mmGB GB/T9113.1-2000

Q:What are metric tubes and British tubes? What's the difference between them? How do you choose flanges?

It should be the metric tube and the British tube, that is to say, the B series and the A series.According to the flange diameter of the steel pipe, the flange diameter should be chosen according to the outer diameter of the steel pipe.The national standard flanges sold on the market are generally B series, and the A series shall be noted.My company website has flange standard, and corresponding steel pipe size. If necessary, please: Hebei, Mengcun Hao elbow elbow pipe manufacturers, station search,

Q:The connection between the air outlet and the air duct can straddle the flange

Can not.The air outlet must be connected directly to the air duct. If the size of the air outlet is larger than the length of the air duct, a suitable length of air duct must be made to facilitate the connection of the air inlet.The reason is: according to JGJ141-2004 "ventilation pipe construction technical regulations" requirements, different specifications of the wind pipe have the corresponding stiffness requirements, otherwise, must be reinforced. The tuyere destroys the integrity of the flange, which affects the stiffness of the duct.

Q:Now in chemical, flange pn2.

Must be noted that the new and old standard flange PN units are not the same! The old standard unit is the kg/cm facility. The unit is MPa. that is the old standard PN2.5 corresponding to the new standard PN0.25.

Q:CF, ICF, is the flange the same?

The ICF flange (ConFlat Flange) has a raised sharp edge inside it. It is made of all metal sealing parts by squeezing the copper gasket to deform it to achieve the purpose of sealing vacuum. Widely used in ultra high vacuum field equipment.

Q:In the fire fighting pipeline, how is the flange piece quantity calculated?

1, the valve flange: Sixth volumes of quota, valve, flange alone set quota, valves, flange bolts and other materials; when the set of eighth volumes, flange, bolt as auxiliary; I was in Liaoning, Liaoning also has seventh volume fixed valve, flange, bolts and auxiliary materials; if it is groove flange, direct replacement material or auxiliary line;2, pipe flange connection: flange containing in the pipe flange connection installed fixed, flange and bolt material of another; if there is no flange connection quota quota, should first set screw, and then set the installation of fixed flange;3, out of the pipe or interface pipe to leave the flange: sets of flange installation quota on the line; Liaoning sixth volumes and eighth books have flange installation quota;

Q:How many kinds of flanges do you have? Does anyone know a more specialized classification?

Welding plate flange (PL)Hubbed flange (SO)Neck welding flange (WN)Threaded flange (TH)Socket welded flange (SW)Flange cap (BL)These are the main, there is a key to say, is the sealing surface classification

Q:Taiwan version Ma flange effect, okay?

For Asians is certainly some version of the Taiwan version of bede. The Chinese version of Taiwan is called wake. However, it is difficult to buy this medicine at home.

Q:The soul of darkness, how about the souls on the slopes beside the cursed frogs outside 3 flanges?

Small partners in the dark souls of the 1 and 2 generations, I believe, have gone through famine, but the third generation? Today to share with the small partners "dark souls 3" reclamation techniques, interested players can come to see. 1. select a knight or warrior better. Knight armor is very good, can get through a week of graduation dress. Soldiers of the small axe very awesome, good offensive power, most enemies can play hard straight, is a little short distance attack. 2. spells of professional reclamation, very egg pain. The two generation of wasteland, law Ye rely on remote biubiu can simply push down some BOSS, powerful enemy. The 3 generation has no such good thing. For example, the mage hurts very little to a gem crystal, which makes you stomp your feet with anger. BOSS and BOSS would like some basic blood curse that game player side slide dodge game player remote attack. The three - generation spells want to hit a little higher, the damage needs to be stored, but when you save it, you give the enemy a chance to hit his face...... 3. giant shield God is expected to dominate the political arena. Big shield against attack ability first-class, two generation face strong enemy and later BOSS, even if huge shield also cannot eat, must learn to roll, 3 generation giant shield almost all the way to the end. The late nameless king BOSS rolled over the party and suffered a lot. The giant shield holding dragon hunting party Dadun can ease more output.

Q:What is a flange in machining and why is it named?

Seal points between the two flanges, then fasten with bolts. Different pressure flanges have different thicknesses and use different bolts. Water pump and valve, and in the pipe connection, these equipment parts of the equipment also made corresponding flange shape, also known as flange connection. Any connecting parts that are bolted and closed at the two sides of the plane are generally referred to as flanges, such as the connections of the ventilation ducts, which can be called flanges. However, this connection is only part of a device, such as flanges and pumps connected, it is not good to pump the flange parts. Relatively small, such as valves, etc., can be called flange parts.Flange connection is an important connection way for pipeline construction.Flange connection is the two pipes, pipe fittings or equipment, first fixed on a flange, between the two flanges, plus flange pad, bolted together, completed the connection.