The flange profile

Flange, also called flang∞®§≥e flange disc or flange. Flange ¥≥♥is a shaft and shaft connected par✔≥ts, used for the conn≥★σ≠ection between the pip® ↕≤e ends; Also useful in the e€ ₹quipment inlet and outlet f‌≠lange, used for the connection bet€"©§ween two equipment, such as reducer↔π σ flange. Flange connection or flange​​™• joint, refers to the flange, gΩ±asket and bolts are connected to each< ✘ other as a group of∏¥ assembly sealing structure of the d>¥♠etachable connection. Pβ€£"ipeline flanges refer to the ≈↕↑flanges of piping devices and the inle♠​t and outlet flanges of ®↑$φequipment when used in equipment. The★​re are holes in the flanges and bo'÷₹lts hold the two flanges$$"​ together. Use gasket to seaσλl between flanges. Flanges are divided ♣¥∞into thread connection (thread connecti₹$§©on) flange, welding flange an>®€d clamping flange. Flanges are used '→≈₹in pairs, wire connection flanges can b±✔e used for low pressure pipes, ✔&δ÷welding flanges can be use€₩☆↕d for more than four kilogrλ•ams of pressure. Add sealing gasket‌λ between two flanges, and t γhen tighten with bolt. Flang• ‌es of different pressures have dφ★↔ifferent thicknesses and us≈$e different bolts. Water pu¶∑αmp and valve, in connection with t¶÷λhe pipeline, the local equipment, al→↓πso made into the corresponding f$≥™lange shape, also known as the ‍®flange connection. Usually in t☆'λ↕he two plane surrounding the use of bo↔±♠lt connection at the same time clλ∑≈osed connecting parts, gen¶₩erally known as the "flange♦σ> ", such as ventilation ↕£pipe connection, this kind of part¥>s can be called "flaπ€£λnge parts". But this connection is on↔•ly a part of the equipment, such a&βs the connection between the flangλ$e and the pump, it is not good to call δ←γ©the pump "flange par≥✔✔ts". Comparatively small, α€∏λsuch as valves, can be called "&✘£≥flange parts"

Classification of the flange

1, according to chemic ±$↓al industry (HG) standards: Sol​÷‌id flanges (IF), threaded flα‌anges (TH), plate flat-welded flange&₩s (PL), butt-welded flanges&λ± with neck (WN), flat-welded flanges w€εith neck (SO), socket welded¥↔$ flanges (SW), butt-welded ring loose ™‌©∞flanges (PJ/SE), flat-we$±✔‌lded ring loose flanges (PJ♦β"/RJ), lining flange co↕☆€ver (BL(S)), flange coσ≠ver (BL).

2, according to the petroc♥↓™→hemical (SH) industry γ¶standard: threaded flange (PT)ו, butt welding flange (WN), flat∑☆ welding flange (SO), π¥"socket welding flange (SW),π♦₹ loose sleeve flange (LJ), flan<≠→₩ge cover (not table note).

3, according to the mechanical (JB) inλδdustry standards: integral flange< , butt welding flange, plate ty♣©≤pe flat welding flange, bu∞ tt welding ring plate type loose ¥♥γ←sleeve flange, flat wel↑γding ring plate type loose sleeve §"≥>flange, flanged ring platσλ•÷e type loose sleeve flange©≠Ω≥, flange cover.

4, according to the national ₽$(GB) standard: integral flange, threα"☆ aded flange, butt welding flange, ×>≥neck flat welding flange, ±×₽neck socket welding ←¥flange, butt welding ring neck loos →e sleeve flange, plate type fla​δ↑∏t welding flange, butt ‌∑‌welding ring plate type l♥£≈®oose sleeve flange, fla±δ÷βnge cover.

The connection form

Flange connection is the two pipe÷"s, pipe fittings or equipment,∑'≈> first fixed on a flange, between the ♥Ω✔✘two flanges, plus fl™•∏'ange gasket, with bolts fastened toge ←ther, complete the connecΩ©¶ tion. Some pipe fittings a★☆ nd equipment have their ≠αown flange, also belongs to the fla$∏™nge connection. Flange ∞✔×★connection is an important connection ≥←way in pipeline constructioσ♠∞n. Flanged connection is easy to us₽✔e and can withstand greater pressu×♣♣re. In industrial piping, in the λ↓≠σhome, the pipe diameter is smal≤™₩l, and the pressure is low,♥↓ and the flange connectio©♦n is invisible. If you arσ₽'e in a boiler room or production site,≥"×✔ there are flanged pipes and ☆←•↓equipment everywhere.

According to the connectiβ&πφon mode, the type of flange conne§≥ ction can be divided into:

Plate type plain welding flanges≥×↓, plain welding flanges with₹ββ∑ neck, butt welding flang®↓↑es with neck, socket welding flan↓λ♦ges, threaded flanges, ¥‍flange covers, butt weldi♦α≥λng ring loose flanges with ‌σneck, butt welding ring loose‌​ $ flanges, ring groove fla≥ ±nges and flange covers, large•'✔↔ diameter flat flanges, large diameteε÷£r high neck flanges, fi₹↓gure eight blind plates, butt welding ♠•♦ ring loose flanges, etc ↕.