Double Flanged Pipe Manufacturer

A double flange pipe is a commonly used pipe connecting component, mainly used to connect two sections of pipe or equipment, and has good sealing performance and pressure-bearing capacity. In the industrial field, the length of the double flange steel short pipe is an important parameter that directly affects the design and installation of the piping system.

ZIZI specialize in the sales of various flanged machined parts. In addition to this, we also sell steel pipes, steel plates, flanges, and bolts and nuts. Our products are widely used in many fields, ranging from precision machinery manufacturing to cozy home decoration and even the high-end aerospace industry. With excellent product quality and broad application adaptability, we have become a trusted choice for many industries. We can not only provide a wide range of products but also offer customized machining services according to specific customer needs, ensuring that every cooperation accurately meets your expectations. We have advanced production equipment and a strict quality management system, committed to providing high-quality piping solutions to global customers. Welcome to contact us.

What is a Double Flanged Pipe?

A double flange steel short pipe is a pipe fitting with two flanges, consisting of two flanges and an intermediate steel pipe section. A flange is a flat, ring-shaped part used to connect pipes or equipment, which can be fastened together with bolts to form a sealed connection. The steel pipe is the middle section connecting the two flanges, typically made of carbon steel or stainless steel.

The length of a double flange steel short pipe refers to the length of the steel pipe, which is the length of the middle section connecting the two flanges. The choice of length should be determined based on specific engineering requirements and design standards.

What does Flanged Pipe Mean?

Flanged pipe refers to a section of pipe that has one or more flanges attached to its end(s). A flange is a protruding rim, edge, or collar on the end of the pipe that is used to connect it to other pipes, valves, pumps, or equipment. These connections are typically made by bolting two flanges together with a gasket in between to create a tight seal. Flanged pipes are commonly used in plumbing, industrial applications, and various types of fluid and gas transportation systems. They are particularly useful in situations where pipes need to be frequently connected and disconnected or where maintenance is required.

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Key Characteristics of a Double Flange Pipe

Pipe Section: The main body of the pipe, which can be made from various materials like steel (carbon, stainless, alloy), ductile iron, PVC, etc., depending on the application.

Flanges at Both Ends: These are the crucial feature. The flanges are usually welded or otherwise securely attached to the pipe ends. They conform to specific industry standards (like ANSI, DIN, JIS) to ensure compatibility in terms of dimensions, bolt hole patterns, and pressure ratings. 

 

Connection Method: Double flange pipes are designed to be joined to other flanged components by bolting the flanges together. A gasket is typically placed between the two mating flanges to ensure a leak-proof seal.

Double Flanged Pipe Materials

Carbon Steel Double Flanged Pipe :

ASTMA 105/A694/ A350 LF3/A350 LF2: F42, F46, F52, F56, F60, F65, F70

Alloy Steel Double Flanged Pipe:

ASTM A182: F1, F5, F9, F11, F22, F91

Stainless Steel Double Flanged Pipe :

ASTM / ASME A/SA 182: F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L.

Duplex & Super Duplex Steel Double Flanged Pipe :

ASTM / ASME A/SA 182: F44, F45, F51, F53, F55, F60, F61.

Nickel Alloy Double Flanged Pipe :

ASTM / ASME SB 564 / 160 / 472: UNS 2200 (NICKEL 200), UNS 4400 (MONEL 400), UNS 8825 INCONEL (825), UNS 6600(INCONEL 600), UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 2201 (NICKEL 201), (ALLOY 20 / 20 CB 3)

Copper Alloy Double Flanged Pipe:

ASTM / ASME SB 61 / 62 / 151 / 152: UNS NO. C 92200, UNS NO. C 83600, UNS NO. 70600, 71500, C 70600 (CU -NI- 90/10), C 71500 (CU -NI- 70/30), UNS NO C 10100, C 10200, C 10300, C 10800, C 12000, C 12200

Specification of Double Flanged Pipe

Centrifugally cast pipes with welded flanges

DN 40 to DN 450: K9 or Class 40 for PN 10, PN 16 and PN 25; K9 for PN 40

DN 500 and DN 600: K9 for PN 10, PN 16 and PN 25; K10 for PN 40

DN 700 to DN 1 600: K9 for PN 10, PN 16 and PN 25

DN 1 800 and DN 2 000: K9 for PN 10 and PN 16

Centrifugally cast pipes with screwed flanges

DN 40 to DN 450: K9 or K10 for PN 10, PN 16, PN 25 and PN 40

DN 500 and DN 600: K9 or K10 for PN 10, PN 16 and PN 25; K10 for PN 40

DN 700 to DN 1 200: K10 for PN 10, PN 16 and PN 25

DN 1 400 to DN 2 000: K10 for PN 10 and PN 16

Pipes with integrally cast flanges

DN 40 to DN 600: K12 for PN 10, PN 16, PN 25 and PN 40

DN 700 to DN 1 600: K12 for PN 10, PN 16 and PN 25

DN 1 800 and DN 2 000: K12 for PN 10 and PN 16

Double Flanged Pipe Dimensions 

Class LA			Pipe Dimensions Class A			Class B			Nominal Dia. Dn	Flange Dimensions						Holes
C	D	b	a	r	s	A No.of hole	D dia of hole	Dia of bolt		Mass of finge	e	Mass for 1 mtr barrel	Mass for 5.5 barrel with socket	e	Mass for 1 mtr barrel	Mass for 5.5 barrel with socket	e	Mass for 1 mtr barrel	Mass for 5.5 barrel with socket
80	160	200	21	42	6	17	4	19	16	4.3	7.2	14.7	64	7.9	16	69.5	8.6	17.3	74.5
100	180	220	22	44	6	18	8	19	16	5	7.5	18.6	109	8.3	20.5	120	9	22	128
125	210	250	22.5	45	6	19	8	19	16	6.6	7.9	24.2	142	8.7	26.4	155	9.5	28.7	167
150	240	285	23	46	6	20	8	23	20	8.2	8.3	30.1	177	9.2	33.2	194	10	35.9	209
200	295	340	24.5	49	6	22	8	23	20	11.4	9.2	44	259	10	48.1	281	11	52.1	304
450	570	620	31.5	64	8	32	16	28	24	32.6	13.3	141	832	14.7	156	914	16	169	986
500	620	670	33	67	8	34	20	28	24	38.1	14.2	165.2	974	15.6	181	1061	17	196.7	1148
600	725	780	36	70	8	38	20	31	27	52.4	15.8	219.8	1298	17.4	241.4	1417	19	262.2	1535
700	840	895	38.5	80	10	41.5	24	31	27	72	17.5	283.2	1675	19.3	311.6	1830	21	338.2	1977
250	350	395	26	52	6	24	12	23	20	14.7	10	59.3	349	11	65	380	12	70.6	411
300	400	445	27.5	55	6	26	12	23	20	18.6	10.6	76.5	450	11.9	84	492	13	91.4	533
350	460	505	29	58	8	28	16	23	20	21.2	11.7	96.3	567	12.8	105	615	14	114.5	667
900	1050	1115	44	100	12	49.5	28	34	30	115	20.8	431.8	2558	22.9	474.3	2791	25	516.6	3024
1000	1160	1230	47	110	12	52.5	28	37	33	145	22.5	518.3	3073	24.8	570	3357	27	619.2	3628
400	515	565	30	61	8	30	16	28	24	27.3	12.5	116.9	690	13.8	128.7	754	15	139.5	814
750	900	960	40	85	10	45.5	24	31	27	85	18.3	317.2	1876	20.2	348.9	2051	22	380.6	2225
800	950	1015	41.5	90	12	46.5	24	34	30	97	19.2	354.9	2100	21.1	389.1	2288	23	423.1	2475

What is the Difference Between Single Flange and Double Flange?

Single Flange:

· A component with a single flange has a flange on only one end.

· This type of connection is typically used to connect a flanged component to a non-flanged component or to terminate a pipe run with a blind flange.

· Another example is a "single flange pipe spool," which is a pre-fabricated length of pipe with a flange on just one end, ready to be connected to an existing flanged connection in a system.

Double Flange:

· A component with a double flange has a flange attached to both ends.

· This configuration is used to connect two flanged components together, such as connecting two sections of flanged pipe, or connecting a flanged valve to a flanged pump.

· A double flange pipe is a common example, where a length of pipe has a flange welded or otherwise attached at each end, ready to be bolted to other flanged pipes or equipment.

Applications of Double Flange Pipes

· Water and Wastewater Treatment

· Oil and Gas Industry

· Chemical Industry  

· Power Plants

· Construction and Infrastructure

· Food and Beverage Industry

· Temporary Piping Systems

· Overground and Exposed Pipelines

Advantages of Using Double Flange Pipes

Easy Installation and Maintenance: Bolted connections are relatively simple to assemble and disassemble, making maintenance, repairs, and component replacement easier.  

Strong and Secure Connections: Flanged joints provide a robust and leak-resistant connection capable of withstanding high pressures and stresses when properly assembled.  

Alignment Flexibility: Flanges offer some flexibility in aligning pipes during installation.

Compatibility and Standardization: Adherence to industry standards ensures interchangeability with other flanged components.  

Versatility: Can be used with various pipe materials and for a wide range of applications.  

Facilitates Inspection: Dismantling flanged joints for inspection is easier than with welded connections.  

You can get an offer for products in below material forms:

-Pipe and Tube (EN 10216-5, ASTM A213, ASTM A249, A312, A790,)

-Forged Fitting and Flange (ASTM A182 , ASTM A105,ASTM B564 )

-Butt Weld Fittings (ASTM A234, ASTM A403,ASTM A815)

-Round bar , Billet (ASTM A276, ASTM A479)

- Plate, Sheet, Strip(ASTM A240, EN 10028-7, A480)

-Bolting, Nuts（ASTM A193, A194, A320）

Double Flanged Pipe Exported Countries

We Export Double Flanged Pipe to Saudi Arabia, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Cambodia, Argentina, Bolivia, Brazil, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Jamaica, Bahamas, Denmark, Norway, Germany, France,Italy, United Kingdom, Spain, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Finland, Ireland, Croatia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Europe, Africa, Asia, North America, South America, Middle East.etc