Q:What are the application technologies of welding flanges?

First, the level of welding flanges and their technical requirements shall comply with the corresponding requirements of JB4726-4728. 1, nominal pressure PN for 0.25MP-1.0MPa carbon steel, austenitic stainless steel forgings, allowing the use of grade I forgings. 2, in addition to the following provisions, the nominal pressure of PN 1.6MPa-6.3MPa forgings shall meet the requirements of secondary or secondary forgings. 3, in line with one of the following conditions, and shall comply with the requirements of forging III: (1) PN = 10.0MPa nominal pressure flange forgings; (2) the nominal pressure PN>4.0MPa chrome molybdenum steel forgings; (3) PN>1.6MPa nominal pressure and the working temperature is less than or equal to -20 degrees Celsius ferritic steel forgings.

Q:What does the 25*3 of flange material specification (angle steel) mean?

The model does not mean the size of the different edges and sizes of the same model. Therefore, the width, the edge and the thickness of the angle iron should be filled out in the contract and other documents, so as not to be indicated by the model alone. Standard Specification for hot-rolled equal angle iron is 2#-20#.Application: the angle iron can be made up of different force components according to the different structure.

Q:Oil seal flange

Flange sealing surface of the three types: planar sealing surface for the pressure is not high, medium non-toxic occasions; uneven sealing surface, suitable for higher pressure situations; the sealing surface of the tenon, suitable for flammable and explosive, toxic medium and high pressure situations. A gasket is a ring made of a material that produces plastic deformation and has a definite strength. Most from the non metal plate gasket is cut down, or by professional plant size, the material for the asbestos rubber sheet, asbestos board, polyethylene plate; also useful thin metal plate (Bai Tiepi, stainless steel) asbestos nonmetal materials such as wrapping made of metal gasket; and a belt around and asbestos tape made of thin steel and the spiral wound gasket. The ordinary rubber gasket for temperature lower than 120 DEG C; asbestos rubber gasket is suitable for steam temperature lower than 450 DEG C, the oil temperature is below 350 DEG C, the pressure is lower than the 5MPa of the occasion, for general corrosive medium, is the most commonly used acid asbestos board. In high-pressure equipment and piping, copper or aluminum, steel 10, stainless steel lens or other shapes of metal gasket. The contact width of the high pressure gasket and the sealing surface is very narrow (line contact), and the sealing surface and the gasket have higher processing finish. Flange, threaded connection (wire), flange and welding flange. Low pressure small diameter wire connecting flange, high pressure and low pressure big diameter all use welding flange, different pressure flange thickness and connection bolt diameter and quantity are different. According to the different grades of pressure, the flange pad also has different materials, from low pressure asbestos pad, high pressure asbestos pad to metal pad. 1. to classified material of carbon steel, cast steel, alloy steel, stainless steel, copper, plastic, Aluminum Alloy, argon Ge Lek, PPC etc..

Q:60 seamless steel tubes with 50 flanges, right?

Yes！ But more accurate description is: the outer diameter is 60mm seamless steel pipe, and nominal size of DN50 flange matching connection.

Q:Shandong 03 fixed ventilation pipe flange production, installation, how to take charge?

Two, work content:1, the wind pipe installation: with the reserved holes, wind pipe, elbow, three links, reducing pipe, pipe fittings, flanges and other Tianyuandifang reinforcement frame, hanging bracket mounting, derusting, painting wind pipe and steel.- according to the above description, flange manufacture and installation has been included in the amount of wind control stability.The ninth chapter of stainless steel plate and components production and installation of ventilation pipeFirst, this chapter includes stainless steel plate, wind pipe, tuyere, flange, hanging support bracket production and installation, a total of four sections, 9 items.Six, wind pipe fittings including the fabrication and installation project, but does not include the flange and the hanging bracket and the hanging bracket; flange according to this chapter separately calculated the corresponding project.- fixed number: 9-527, 9-528The tenth chapter aluminum ventilation pipes and parts installationFirst, this chapter includes aluminum circular duct, rectangular duct, round cowl, flange manufacture and installation, a total of four 20 items.Four, wind pipe production and installation projects include pipe fittings, but not including flanges and hanging support bracket; flange production and installation in accordance with the corresponding items in this chapter.

Q:Can the aluminum flange 6061 and the aluminum tube 6063 be welded directly? Will there be such a fracture?

1, welding can be no problem.2, as long as the welding process is fine.

Q:Our factory production of wind tower is to use forged flange (and specification is written in the continuous casting slab is not allowed), incoming raw materials warranty flange is written in continuous delivery, that is not the flange casting forging? Are you in a hurry to accept the goods?! I have less money, thanks in spirit, please knowledgeable people teach in, with little to say, it is best to have some basis for what? Thanks a million!

Forged flanges and cast flanges use different levels of stress, and forged flanges can be used in high and low pressure pipelines,Casting flanges can only be used for non pressure lines, otherwise leakage is very easy.Hebei bend flange, my name is Liu Jiangong.Flange production using continuous casting does not mean that the flange is casting, can only say that raw materials are not up to standard. Let's pay for the goods. High pressure pipe, as far as possible the use of round steel material.

Q:Flange SO40-2.

Now the method is SO 40-25 M.Refer to HG/T20592-2009 steel pipe flanges (PN Series)

Q:What are single plate flanges, short tubes, flanges, short tubes, flanges, three connections, and flanged bends? What is the material? What is it?

1, single plate flange short tube: that is short pipe at one end of the flange;2, flange short tube: that is, both ends of the short tube flange;3, flange three pass: three links at each end have flange

Q:What flange is the SOFF flange?

SOFF flange, mean hubbed flange, the whole planePL welding plate flange with flange, SO diameter, WN butt welding neck flange;