How to get high quality pipe coupling?

What is a pipe coupling?

Spojka potrubí connect two pipes or tubes together of equal or differing sizes . Pipe coupling mainly aims to solve the existing couplings easily generated due to fatigue fracture stress concentration problems.
Pipe coupling structure is: pipe ends with the inner wall of the coupling connected to tapered threads, couplings and tubing ends of the body with the same thread pitch flat with threaded connect. A single taper threaded connection with relief tubing outer thread root stress concentration characteristics, not easy to produce fatigue fracture, connecting effect. Effectively prevent oil well pipeline string broken off accidents.

Removable pipe couplings are most often of a threaded design which allows them to be screwed onto the pipes to be joined. The most simple of these is a basic pipe section slightly larger than the pipes to be joined and cut with an internal thread. The ends of the pipes are also threaded, and the coupling is simply sealed with hemp or sealing tape and screwed onto both pipes. More complex removable pipe couplings are of a two-part design where one part is attached to each pipe and then screwed together to complete the joint. These types of couplings are often used on high pressure copper gas pipes and flexible hydraulic or pneumatic hoses.

A spojka potrubí is also often used to facilitate changes of pipe routing, crossing of obstacles, and penetration of walls. These couplings are typically elbow or U shaped but may include several variants featuring different angles of deflection. Step-down or reduction pipe couplings featuring different end diameters are used to join pipes of dissimilar sizes. Adaptor fitting may also be used to join pipes of different materials and feature separate end fittings suitable for both materials. Where more than two pipes are to be joined Y, T, or cross shaped couplings are common methods of achieving the joints.

Pipe couplings may also include other features such as inspection or maintenance access points. These are typically screw-on caps that allow for visual inspections or the insertion of rods used to remove blockages. Flow meters and other analytical attachments are frequently built into a pipe coupling to ease installation. Pipe couplings may also include mechanisms such as shut-off and pressure release valves.

Types of pipe couplings

Full Coupling fittings

What is a socket weld full coupling?

Half Coupling fittings

What is a socket weld half coupling?

Na stránkách socket weld half coupling can be directly welded to the run pipe, to make a branch connection. Used to take a small bore pipe branch-off from a large bore pipe where the pipe spec requirement is socket weld in small bore size.

Product: Socket Weld Half Coupling

Size : 1/2″NB TO 4″NB IN

Třída : 3000 LBS, 6000 LBS, 9000 LBS

Type : Socket Weld (S/W) & SCREWED (SCRD) – NPT, BSP, BSPT   

Form : 45 Deg Elbow, 90 Deg Elbow, Forged Elbow, Threaded Elbow, Socket Weld Elbow.

MATERIALS : 
Stainless Steel Socket Weld Half Coupling – SS Socket Weld Half Coupling 
ASTM A182 F304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L 

Duplex Stainless Steel Socket Weld Half Coupling – Duplex SS Socket Weld Half Coupling
ASTM / ASME A/SA 182 UNS F 44, F 45, F51, F 53, F 55, F 60, F 61.

Carbon Steel Socket Weld Half Coupling – CS Socket Weld Half Coupling
ASTMA 105/A694/ Gr. F42/46/52/56/60/65/70

Low Temperature Carbon Steel Socket Weld Half Coupling  – LTCS Socket Weld Half Coupling
A350 LF3/A350 LF2

Alloy Steel Socket Weld Half Coupling – AS Socket Weld Half Coupling
ASTM / ASME A/SA 182  F1/F5/F9/F11/F22/F91

Nickel Alloy Socket Weld Half Coupling  :
Standardní: ASTM / ASME SB 564 / 160 / 472.
UNS 10276 (HASTELLOY C 276 Forged Elbow )
UNS 2200 (NICKEL 200 Forged Elbow ), 
UNS 2201 (NICKEL 201 Forged Elbow ), 
UNS 4400 (MONEL 400 Forged Elbow ), 
UNS 8020 (ALLOY 20 Forged Elbow )
UNS 8825 INCONEL 825 Forged Elbow ), 
UNS 6600 (INCONEL 600 Forged Elbow ), 
UNS 6601 (INCONEL 601 Forged Elbow), 
UNS 6625 (INCONEL 625 Forged Elbow),

Copper Alloy Socket Weld Half Coupling 
ASTM / ASME SB 61 / 62 / 151 / 152.
C 70600 (CU -NI- 90/10) – Cupro Nickel Forged Elbow 
C 71500 (CU -NI- 70/30) – Copper Nickel Forged Elbow 
UNS NO. C 92200, UNS NO. C 83600, UNS NO.  UNS NO C 10100,
C 10200, C 10300, C 10800, C 12000, C 12200

Dimensions of ASME B 16.11 Socket Weld Half Coupling

NPS 1/2 to 4 – 3000 LBS – ASME B 16.11

NPS	Zásuvka Otvory	Hloubka Zásuvka	Otvory diameter	Zásuvka wall thickness	Délky pokládky
	B	J	D	C	Spojka E
1/2	21.95 21.70	10	16.6 15	4.65 4.10	9.5
3/4	27.30 27.05	13	21.7 20.2	4.90 4.25	9.5
1	34.05 33.80	13	27.4 25.9	5.70 5.00	13
1¼	42.80 42.55	13	35.8 34.3	6.05 5.30	13
1½	48.90 48.65	13	41.7 40.1	6.35 5.55	13
2	61.35 61.10	16	53.5 51.7	6.95 6.05	19
2½	74.20 73.80	16	64.2 61.2	8.75 7.65	19
3	90.15 89.80	16	79.5 46.4	9.50 8.30	19
4	115.80 115.45	19	103.8 100.7	10.70 9.35	19

Dimensions Socket Weld Half couplings – NPS 1/2 to 2 – 6000 LBS – ASME B16.11

NPS	Zásuvka Otvory	Hloubka Zásuvka	Otvory diameter	Zásuvka wall thickness	Délky pokládky
	B	J	D	C	Spojka E
1/2	21.95 21.70	10	12.5 11	5.95 5.20	9.5
3/4	27.30 27.05	13	16.3 14.8	6.95 6.05	9.5
1	34.05 33.80	13	21.5 19.9	7.90 6.95	13
1¼	42.80 42.55	13	30.2 28.7	7.90 6.95	13
1½	48.90 48.65	13	34.7 33.2	8.90 7.80	13
2	61.35 61.10	16	43.6 42.1	10.90 9.50	19

Coupling fittings are used for fluid conduits in which each end portion of two tubes to be connected is provided with a swaged-on adapter carrying the necessary means to connect or disconnect the tubes without disturbing the swaged-on adapter.

Náš sortiment spojovacích armatur je k dispozici z hliníku, oceli a bronzu.

Pipe couplings are highly demanded in the pipe fitting market. Pipe couplings are fittings that help to extend or terminate pipe runs. These fittings are also used to change pipe size. Couplings extend a run by joining two lengths of pipe. They are known as reduced coupling if they are used to connect pipes of different sizes. Couplings are also known as repair couplings. These couplings are without stops or ridges and they can be fixed anywhere along the pipe length for preventing leak of any kind. 

Materiál: ASTM A105, F304, F316, F304L, F316L, A182, F11, F22 a F91. 
Tlak: 2000LBS, 3000LBS, 6000LBS, 9000LBS 
Velikost: od 1/4 do 4 palců 
Standardní: ANSI B16.9/B16.28 a MSS SP-43/SP-75 
Připojovací konce: svařované na tupo, se závitem 
Typy vláken: NU, EU, STC, LTC a BTC
Povrchová úprava: tryskání, nerezavějící černý olej
Packing: Plywood Case/ Pallet/ other

A Hex Coupling is a Pipe fitting which consists of a short piece of Hex pipe, provided with a female pipe thread at both end, for connecting two other fittings.

A Hex Reducing Coupling is a Pipe fitting which consists of a short piece of Hex pipe, provided with a female pipe thread of different sizes at both end, for connecting two other fittings.

Zdroj: Čína Pipe Coupling Výrobce - Yaang Pipe Industry Co., Limited (www.ugsteelmill.com)

(Yaang Společnost Pipe Industry je předním výrobcem a dodavatelem výrobků ze slitin niklu a nerezové oceli, včetně přírub z nerezové oceli Super Duplex, přírub z nerezové oceli, tvarovek z nerezové oceli, trubek z nerezové oceli. Výrobky Yaang se široce používají v lodním stavitelství, jaderné energetice, námořním strojírenství, ropném, chemickém, důlním, čistírenském, plynárenském a tlakovém průmyslu a dalších odvětvích.)

Pokud chcete získat více informací o článku nebo se s námi podělit o svůj názor, kontaktujte nás na adrese [email protected]

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  - https://www.ugsteelmill.com/difference-pipe-nipple-and-pipe-coupling.html

Odkazy:

• https://www.yaang.com/what-is-a-socket-weld-full-coupling.html
• https://www.yaang.com/what-is-a-socket-weld-half-coupling.html
• https://www.yaang.com/what-is-threaded-half-coupling.html
• https://www.yaang.com/what-is-threaded-reducing-coupling.html
• https://www.yaang.com/what-is-threaded-full-coupling.html