Diameter flange common with welded flange and welded flange. Flat welding flanges and welded large diameter large-diameter flange structure and scope to use different, to show the features and benefits will be different, so when used to make use of different ranges, play an important guarantee Flange role. Large-diameter welded flange steel is poor, for pressure p≤4MPa occasions; also known as high-neck flange welded flange, greater rigidity, suitable for high pressure and temperature applications. Type flange sealing surface in three ways: planar sealing surface for the pressure is not high, medium toxic occasions; uneven sealing surface for higher pressure situations; tongue and groove sealing surface, for flammable, explosive toxic medium and high pressure applications. Flanged fittings have different properties in different areas of good performance, adapt to different situations and space, the effectiveness of produce will be different. [Roll] basic instructions flange after processing into a circle, and then processing the waterline, bolt holes, mouth and other processes only. This is generally a large flange, forming a maximum of seven meters can be done. Mostly to plate welded flange, connection for welding. If the production segment of the production process, you can do 12 meters -15 meters or larger size. Such flanges have a good quality assurance. Because the raw material is in the board, good density. [Features] rolled flange bolt holes during processing, and is not allowed to weld the bolt holes have hit the place. Such flanges are made of carbon steel, stainless steel, alloy steel. Production base in Cangzhou City, Hebei Mengcun Hui Autonomous County area. You can now produce products to seven meters. 3 m above the rolled flange at the signing of the contract, we should first take into account the problem of transportation. [] The basic rectangular flange Description Model: DN300 × 100, DN300 × 500, DN300 × 600, DN300 × 700, DN400 × 500, DN400 × 600, DN400 × 700, DN400 × 800, DN500 × 600, DN500 × 800, DN500 × 900, DN500 × 1000. General may provide bespoke production. Another cargo adjustable flange gaskets, asbestos gaskets, rubber gaskets, large diameter rubber gaskets, screws, obvious price advantage, welcome to plant inspection. 】 【Rectangular flange Features My company has three production lines elbow, two tee IF Bend diameter pipe production line production line, pipeline flange forging an all products are used by the US standard ASME (ANSI) German standard DIN, Japan Standard JIS, China GB / T, JB, SH, HG and other standards. Specializing in the production of seamless straight seam steel pipe exports (90 degrees 45 degrees 180 degrees elbows, tees, crosses, reducers, elbows, flange, pipe caps, IF Bend, custom processing diameter 10mm --- 426mm variety of Big Bend .U Z-bend-bend S-bend etc. flange (high pressure welded flange, welded flange ,, flange cover), pipe materials are selected domestic carbon steel, stainless steel, alloy steel materials such as:. WPB Q235, Q345B, 20 #, 35 #, provide 12crlMov, 16Mn, 15crMo, 321,304,316,316L other high-quality materials production and processing, according to customer drawings making rolled flange lathe 1. The first use (OD - ID) divided by 2 and then get out of the results of 2. (OD - results above). After multiplying the result X0.0246615X thickness above 3. After the above steps, you have to a theoretical weight rolled carbon steel flanges up. I plant customers can request the production of various types of non-problematic pipe fittings drawing tube. Welcome to inquire. Our company has three production lines elbow, two tee-diameter pipe production line IF Bend production line, pipeline flange forging an all products are used by the US standard ASME (ANSI) German standard DIN, Japanese standard JIS, Chinese GB / T, JB, SH, HG and other standards. Specializing in the production of steel exports without sew a straight seam pipe fittings (90 degrees 45 degrees 180 degrees elbows, tees, crosses, reducers, elbows, flange, pipe caps, IF Bend, custom processing a variety of large diameter 10mm --- 426mm bend. U-bend Z-bend S-bend and other flange (high pressure welded flange, welded flange ,, flange cover) power plant piping equipment, steam piping parts, boiler accessories series: throttling device, flow measurement device, valve gear, bellows (including creeping inflation measurement points, three-shift indicator, throttle plate, the import filter feed pump, hydrophobic plate, flow indicator, flow measurement orifice nozzle assembly flat welded flange , multi-stage feed pump recirculation throttling device, throttle various drainage funnel, etc.), pipe materials are selected domestic carbon steel, stainless steel, alloy steel welded flange distortion, sealed, and widely used, there is a corresponding rigid and flexibility requirements and reasonable transition butt thinning, weld joints away from large, welded joints from temperature deformation, it takes more complex physical structure loudspeaker for fluctuations in pressure or temperature or high-temperature pipelines high pressure and low temperature piping, generally greater than 2.5MPa for PN pipes and valves connected; also used to transport expensive pipeline flammable, explosive media company has three production lines elbow, two tees. IF Bend diameter pipe production line production line, pipeline flange forging an all products are used by the US standard ASME (ANSI) German standard DIN, Japanese standard JIS, Chinese GB / T, JB, SH, HG and other standards. Specializing in the production straight seam steel seamless pipe exports (90 degrees 45 degrees 180 degrees elbow, tees, crosses, reducers, elbows, flange, pipe caps, IF Bend, processing custom 10mm --- 426mm diameter each Big Bend kinds .U Z-bend-bend S-bend and so on. Flange (high pressure welded flange, welded flange ,, flange cover) power plant piping equipment, steam piping parts, boiler accessories Series: throttling device, flow measurement devices, valve gear, bellows (including creeping inflation measurement points, three-shift indicator, throttle plate, the import filter feed pump, hydrophobic plate, flow meters, flow measurement orifice nozzle assembly welded flange level, multi-stage feed pump recirculation throttling device, throttle various drainage funnel, etc.), pipe fittings materials are selected domestic carbon steel, stainless steel, alloy steel, such as: WPB Q235, Q345B, 20 #, 35 #, 12crlMov, 16Mn, 15crMo, 321,304,316,316L other quality materials production and processing, according to customer requirements making drawings. Flat welding flange sealing principle: two sealing surfaces of the bolt flange gasket squeeze each other and form a seal, but it also led to the destruction sealed. To maintain the seal, you have to maintain a huge bolt force, for which the bolts must do more. The bigger bolt nut must match the larger, which means that a larger diameter bolt and tighten the nut to create the conditions for. However, the larger diameter bolts for flange becomes bent, the only way is to increase the thickness of the flange portion. The entire device will require a great size and weight, which has become a particular problem in the offshore environment, because in this case the weight of the people must always be the main cause of concern. And, fundamentally, is an invalid welded flange seal, it needs to put 50% of the bolt load for pressing pads, while maintaining the pressure of the load for only 50%. Another customer request the production of non-models pipe fittings difficult drawing tube. Common materials are carbon steel Q235 20 # carbon steel 304 stainless steel 316 stainless steel alloy steel 15CrMo alloy 16mn Professional elbow bend pipe flanges manhole compensation manufacturers, customers can request the production of each other kinds of non-models pipe fittings difficult drawing tube. Common materials are carbon steel Q235 20 # carbon steel 304 stainless steel 316 stainless steel 16mn alloy steel 15CrMo alloy flat welding flange sealing principle: two sealing bolts of each other and form a flange gasket extrusion seal, but it also lead to the destruction of the seal. To maintain the seal, you have to maintain a huge bolt force, for which the bolts must do more. The bigger bolt nut must match the larger, which means that a larger diameter bolt and tighten the nut to create the conditions for. However, the larger diameter bolts for flange becomes bent, the only way is to increase the thickness of the flange portion. The entire device will require a great size and weight, which has become a particular problem in the offshore environment, because in this case the weight of the people must always be the main cause of concern. And, fundamentally, is an invalid welded flange seal, it needs to put 50% of the bolt load for pressing pads, while maintaining the pressure of the load for only 50%. My company has three production lines elbow, two tee IF Bend diameter pipe production line production line, pipeline flange forging an all products are used by the US standard ASME (ANSI) German standard DIN, Japanese standard JIS, Chinese GB / T , JB, SH, HG and other standards. Specializing in the production of seamless straight seam steel pipe exports (90 degrees 45 degrees 180 degrees elbows, tees, crosses, reducers, elbows, flange, pipe caps, IF Bend, custom processing diameter 10mm --- . 426mm variety of Big Bend .U Z-bend-bend S-bend and other flange (high pressure welded flange, welded flange ,, flange cover) power plant piping equipment, steam piping parts, boiler accessories series: throttling device, flow measurement devices, valve gear, bellows (including creeping inflation measurement points, three-shift indicator, throttle plate, the import filter feed pump, hydrophobic plate, flow meters, flow measurement orifice level welded flange nozzle assembly, multi-stage feed pump recirculation throttling device, throttle various drainage funnel, etc.), pipe materials are selected domestic carbon steel, stainless steel, alloy steel, such as: WPB Q235, Q345B, 20 #, 35 #, 12crlMov, 16Mn, 15crMo, 321,304,316,316L other high-quality materials production and processing, according to customer requirements making drawings.