Haihao Group manufacture & supply high quality marine butt welding flanges in different dimension,pressure,standard,material, specification. Butt welding flanges include many types and models.Butt welded flanges are used for connecting flanges and pipes.They are mainly used in welding techno ...

Casting is a common flange production technique.The shape and size of the billet are accurate, the processing quantity is small, the production efficiency is high, the cost is low, it can make the complicated shape and so on. But casting marine flange also has casting defects (pores, cracks, inc ...

Forging is one of the marine flange production process.Different from the common marine casting flange, the general raw material of the marine forging flange is the billet, the billet will be cut after continuous hammering, in order to eliminate the segregation in the ingot, loose. Forging flang ...

Flange is widely used, especially in the construction, maintenance, replacement, maintenance and operation of ships, Marine flange plays an important role in connecting pipelines. Marine flange is used on the ship flange, flange is the pipe and pipe interconnecting parts, connected to the pipe e ...

In the last article,we introduced of tube sheet.At the same time,we would like to introduce several factors that affect tube sheet corrosion.Some customers have consulted with me about tubesheet corrosion issue,so I will explain the reasons in detail today. 4.2 Diameters Tube Sheet In Haihao Gro ...

Recently we received an inquiry from a customer in Thailand,who specializes in the boiler industry.The product that the customers wanted is tube sheet(tubesheet),which is suitable for heater.This time,we will introduce the relevant knowledge of tube sheet accordingly. Tube sheets are under produ ...

Orifice flanges are widely used in orifice meters to measure the flow rate of liquids and gases in the respective pipeline.Two orifice flanges are called orifice flange union.Each flange has a pipe tap for measuring the pressure drop of the flow through the orifice plate.This makes the separate ...

A ring joint gasket(RTJ) provides a strong and durable metal-to-metal seal between two mating RTJ flanges.As the flanges are bolted,the softer material of the ring joint gasket is “squeezed” into the flanges grooves (made of a harder material) and seals the connection very tightly.RT ...

American national standards ASME/ANSI B16.5 and B16.47 together cover pipe flanges up to NPS 60.ASME/ANSI B16.47 covers two series of flanges,ANSI/ASME B16.47 Series A which is equivalent to MSS SP-44 (the 1996 Edition of MSS SP-44 complies with B16.47 tolerances),and ANSI/ASME B16.47 Series B ...

The ASME B16.47 flanges can divided into ASME B16.47 series A flange and ASME B16.47 series B flange for blind flange and weld neck flange.Series A flange was known as MSS SP 44,Series B flange was also formerly known as API 605 flange. ASME B16.47(large diameter steel flanges) is a standard for ...

Spiral wound gasket is one type of sealing gasket,which is the best elastic gasket in semi-metal close gasket,and is formed by alternating winding of v-shaped or w-shaped thin steel strip and various fillers.At present,it is widely used in pipeline,valve,pressure vessel and other flange connecti ...

Graphite gasket is one kind of the common flange gaskets and used to prevent pipeline leakage.Graphite gasket is made of pure graphite plate or metal reinforced graphite plate cutting or stamping,with many excellent sealing performance,such as:thermal stability,self-lubrication,corrosion resista ...