welding neck flange-manufacture,factory,supplier from China

Implementation principleThreaded flange is a kind of non-welded flange, which processes the inner hole of the flange into pipe threads, and is matched with the threaded pipe to realize the connection. Compared with the flat welding flange or the butt welding flange, the threaded flange has the characteristics of convenient installation and maintenance, and can be used on some pipelines where welding is not allowed. Alloy steel flanges have sufficient strength, but are not easy to weld, or the welding performance is not good, and threaded flanges can also be selected.

Loose flange: This kind of flange is often used in the case where the medium temperature and pressure are not high and the medium nozzle is highly corrosive. The loose flange is generally used in combination with the flanging short joint, that is, the flange ring is loosely sleeved outside the flanging short joint, the pipe is butt welded with the flanging short joint, and the flange sealing surface is processed on the flanging short joint.In addition, there are flat welding ring and butt welding ring plate loose flange.

Features of Flat Welding FlangesWhen welding flat welding flanges, only one side welding is required, and there is no need to weld the inner port of the pipe and flange connection. The welding installation of butt welding flanges requires double-sided welding of the flanges. Therefore, flat welding flanges are generally used for low and medium pressure pipelines, and butt welding flanges are used for the connection of medium and high pressure pipelines. Butt welding flanges are generally at least PN2.5MPa. Butt welding is used to reduce stress concentration.

Material grade: ER70S-6Standard: ASMEIt belongs to copper-plated low-alloy steel gas shielded welding wire. It uses C02 or argon-rich shielding gas for welding. It has excellent welding process performance, stable arc combustion, less spatter, beautiful weld shape, and low sensitivity to weld metal pores. The position welding process is good.

Types of Socket Weld FlangesSocket Weld Raised Face FlangeRaised Faced Socket weld Flanges4 Bolt Socket Weld flange300# Socket Weld FlangeANSI B16.5 Socket weld FlangesSocket weld Flange DimensionsASME B16.5 SWRF FlangesANSI B16.5 Class 150 Socket weld FlangesStainless Steel Socket weld Flanges Suppliers1 inch Socket weld FlangeSocket weld Ring Type Joint FlangesASME B16.47 Series A and B SWRF Flanges2 inch Socket weld Flange3 inch Socket weld FlangeANSI B16.5 class 150 SWRF Flange StockholderANSI 150 Socket weld Flange4 inch Socket weld FlangeHigh Quality SWRF FlangesFlat Face SWRF Flange6 in

DifferenceProductivityCompared with manual welding electrodes, the continuous welding method of flux-cored welding wire has high production efficiency.

Pattern welding is a special way of constructing a sword blade from a lot of iron / steel parts. Many different kinds of iron / steel parts are fire welded in such a way that a pleasing pattern can be observed on one or both sides of a blade.

Structural features:Threaded flanges manufactured in accordance with ASME B16.5 are similar to sliding flanges, but the holes shall have tapered pipe threads in accordance with ASME b1.20.1. The thread shall be concentric with the axis of the flange opening, and the alignment deviation (perpendicular to the flange face) shall not exceed 5mm per meter. Threaded flanges are NPs 1 / 2 to NPs 24 in size and pressure classes are 150, 300, 400, 600 and 900. The sizes of class 1500 and 2500 are NPs 1 / 2 to NPs 2 - 1 / 2.Class 150 threaded flange has no counterbore.

The oxide film on the surface of stainless steel square tube is thin and dense, which is not easy to fall off. Mechanical cleaning is a common and effective means of stainless steel surface treatment. The iron oxide scale cleaning machine is mainly composed of steel brush roller, driving device, high-pressure water system, cooling water system and clamping device.Some preparations need to be done before welding of stainless steel square tube, which can improve the quality and efficiency of tubeline welding and the safety measures of welding workers.

Description: A002 is an ultra-low carbon Cr19Ni10 stainless steel electrode with titanium calcium type coating.The carbon content of the metallization is less than 0.04%, which has good resistance to intergranular corrosion, and can be used for both AC and DC.Have good operating process performance.Uses: For welding ultra-low carbon Cr1Ni10 stainless steel structures, also for 0G19NThe working temperature of i11Ti is lower than 3000C with corrosion-resistant stainless steel lining structure.