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I raccordi filettati per alta pressione ricavati da forgiatura (threaded forged fittings) si riferiscono a giunzioni che prevedono il montaggio mediante filettatura. Quest’ultima può essere NPT (National Pipe Threads) oppure BSP (British Standard Pipe). Tra le due versioni viene utilizzata più frequentemente quella NPT. Tra la gamma di fornitura di Fitting Service rientrano raccordi filettati forgiati inox ASME B16.11 con le seguenti caratteristiche: Designazione secondo le classi di pressione: serie 2000, serie 3000, serie 6000 Dimensioni conformi alla norma ASME B16.11 Materiale acciaio inox: ASTM A403 WP 304 / 304L, ASTM A403 WP 316 / 316L, ASTM A182 F304 / 304L, ASTM A182 F316 / 316L Le figure di raccordi filettati forgiati in acciaio inox proposte sono le seguenti (con relativa dicitura in lingua inglese): Gomito 45° (45° threaded elbow) Gomito 90° (90° threaded elbow) Tee (threaded tee) Tappo femmina (cap) Tappo maschio (plug) Manicotto (coupling) Mezzo manicotto (half coupling) […]
Nella progettazione di un’apparecchiatura o nella realizzazione di un piping si presenta spesso la necessità di utilizzare un tronchetto a saldare con lunghezza differente dallo standard ISO. Un’applicazione tipica prevede la coibentazione di un collettore e necessita quindi di tronchetti particolarmente lunghi. Nella nostra gamma è già presente il tronchetto a saldare filettato GAS Conico con lunghezza 100 mm standard. La lunghezza 100 mm copre tutte le esigenze di lunghezza inferiore. Per richieste di tronchetti con lunghezze superiori, stiamo completando la gamma di tronchetti fino a 300 mm. Non di meno, produciamo già alcune misure personalizzate secondo esigenze dei nostri clienti per lotti minimi di produzione secondo il diametro richiesto. La completezza della nostra gamma di tronchetti a saldare in acciaio inox si adatta alla maggior parte delle esigenze costruttive della nostra clientela.
In the previous article introducing the very concept of threading it was highlighted that in the hydraulic sector two specific kinds of threads are used: GAS threads and NPT threads. GAS threading originated from the Whitworth thread – which was devised in 1833 and which is still used in the mechanical field – with a very subtle pitch. It is used for pipes’ coupling and fluids conveyance and it is therefore common in stainless steel fittings. The designation of GAS threading is conventional and it refers to the theoretical minor diameter of a pipe. Usually, the dimensions of threaded fittings are expressed in inches. Yet, conversion tables enable people to easily convert the width of a pipe’s diameter in millimetres. GAS threads are divided into Conical GAS and Cylindrical GAS threads. The joints between the screws and nuts of conical threads are hermetically closed. This may be done by means […]
The term “threading” refers to temporary connections that can be very easily disassembled. Threadings’ parts are usually held together by either sheer friction or physical obstacles. Threading is a kind of mechanical construction used to create a helical structure out of two elements, which is called “thread”. Threads are built either on the outer side of cylindrical and conical elements (screws) or on the inner side of components (nuts). Then, screws and nuts are screwed together. Threaded components can be used for two main purposes: In the mechanical industry (liaison function), for immobilizing and temporarily fixing two elements together. In the hydraulic industry (transmission function), for building more complex and elaborate structures for flows of fluids and gases. Threading makes use of many components whose dimensions may vary according to the reference standard. The main ones are: Helix: it is the curve generated by a point P travelling in circular […]