If the components within hydraulic systems never had to be removed, connections could be brazed or welded to maximize reliability. However, it is inevitable that connections must be broken to allow servicing or replacing components, so removable fittings are a necessity for all but the most specialized hydraulic systems. To this end, fitting designs have advanced considerably over the years to improve performance and installation convenience, but the overall function of these components remains relatively unchanged.

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Fittings seal fluid within the hydraulic system by one of two techniques: all-metal fittings rely on metal-to-metal contact, while O-ring type fittings contain pressurized fluid by compressing an elastomeric seal. In either case, tightening threads between mating halves of the fitting (or fitting and component port) forces two mating surfaces together to form a high-pressure seal.

All-Metal Fittings

Threads on pipe fittings are tapered and rely on the stress generated by forcing the tapered threads of the male half of the fitting into the female half or component port (Fig. 1). Pipe threads are prone to leakage because they are torque-sensitive—over-tightening distorts the threads too much and creates a path for leakage around the threads. Moreover, pipe threads are prone to loosening when exposed to vibration and wide temperature variations—certainly no strangers to hydraulic systems.

Seepage around threads should be expected when pipe fittings are used in high-pressure hydraulic systems. Because pipe threads are tapered, repeated assembly and disassembly only aggravates the leakage problem by distorting threads, especially if a forged fitting is used in a cast-iron port. Thread sealant compound, a potential contaminant, is recommended for pipe fittings, which is still another reason why most designers consider them to be obsolete for use in hydraulic systems.

Flare-type fittings (Fig. 2) were developed as an improvement over pipe fittings many years ago and probably remain the design used most often in hydraulic systems. Tightening the assembly's nut draws the fitting into the flared end of the tubing, resulting in a positive seal between the flared tube face and the fitting body. The 37-deg. flare fittings are designed for use with thin-wall to medium-thickness tubing in systems with operating pressures to 3,000 psi. Because thick-wall tubing is difficult to form to produce the flare, it is not recommended for use with flare fittings. The 37-deg. flare fitting is suitable for hydraulic systems operating at temperatures from −65° to 400° F. It is more compact than most other fittings and can easily be adapted to metric tubing. It is readily available and one of the most economical.

O-ring-Type Fittings

Surprising as it may seem, leakage in hydraulic systems could have been eliminated more than a couple generations ago. Although leak-free hydraulic operation had always been desirable, the need became more acute with higher operating pressures that became necessary during World War II, primarily in the hydraulic systems of military aircraft. Until then, common operating pressures had hovered around 800 to 1,000 psi. The post-war era ushered in systems designed to operate at pressures to 1,500 psi and higher on applications where rapid cycling and high shock pressures were present. It was not long until pressures climbed to 2,500 and 3,000 psi—which certainly are not uncommon today.

Fittings that use O-rings for leak-tight connections continue to gain acceptance by equipment designers around the world. Three basic types now are available: SAE straight-thread O-ring boss fittings, face seal or flat-face O-ring (FFOR) fittings, and O-ring flange fittings. The choice between O-ring boss and FFOR fittings usually depends on such factors as fitting location, wrench clearance, or individual preference. Flange connections generally are used with tubing that has an outside diameter (OD) greater than 7/8-in. or for applications involving extremely high pressures.

O-ring boss fittings seat an O-ring between threads and wrench flats around the OD of the male half of the connector (Fig. 4). A leak-tight seal is formed against a machined seat on the female port. O-ring boss fittings fall into two general groups: adjustable and non-adjustable. Non-adjustable (or non-orientable) fittings include plugs and connectors. These are simply screwed into a port, and no alignment is needed. Adjustable fittings, such as elbows and tees, need to be oriented in a specific direction.

The basic design difference between the two types is that plugs and connectors have no locknuts and require no back-up washer to effectively seal a joint. They depend on their flanged annular area to push the O-ring into the port's tapered seal cavity and squeeze the O-ring to seal the connection. Adjustable fittings are screwed into the mating member, oriented in the required direction, and locked in place when a locknut is tightened. Tightening the locknut also forces a captive backup washer onto the O-ring, which forms the leak-tight seal. Assembly is always predictable, because technicians need only make sure that the backup washer is firmly seated on the port's spot face surface when the assembly is completed and that it is tightened properly.

The FFOR fitting forms a seal between a flat, finished surface on the female half and an O-ring held in a recessed circular groove in the male half (Fig. 5). Turning a captive threaded nut on the female half draws the two halves together and compresses the O-ring.

Fittings with O-ring seals offer a number of advantages over metal-to-metal fittings. While under- or over-tightening any fitting can allow leakage, all-metal fittings are more susceptible to leakage because they must be tightened to within a higher, yet narrower torque range. This makes it easier to strip threads or crack or distort fitting components, which prevents proper sealing. The rubber-to-metal seal in O-ring fittings does not distort any metal parts and provides a tangible “feel” when the connection is tight. All-metal fittings tighten more gradually, so technicians may have trouble detecting when a connection is tight enough but not too tight.

On the other hand, O-ring fittings are more expensive than their all-metal counterparts, and care must be exercised during installation to ensure that the O-ring doesn’t fall out or get damaged when the assemblies are connected. In addition, O-rings are not interchangeable among all couplings. Selecting the wrong O-ring or reusing one that has been deformed or damaged can invite leakage. Once an O-ring has been used in a fitting, it is not reusable, even though it may appear free of distortions.

Some manufacturers offer specially designed, high-pressure fittings that are equal in leak and weep resistance to FFOR fittings and interchangeable with a number of international fittings. Testing has shown these new designs to surpass all requirements with no evidence of leakage when exposed to vibrations up to 15 times more severe than those experienced on a typical hydrostatic drive. These designs may appear similar to standard fittings but should not be mated with fittings from different manufacturers.

Hydraulic Flanges

Fittings for tubing larger than 1-in. OD have to be tightened with large hex nuts which, in turn, require larger wrenches to enable workers to apply sufficient torque to tighten the fittings properly. To install such large fittings, system designers must provide the necessary space to give workers enough room to swing large wrenches. In addition, worker strength and fatigue could be factors affecting proper assembly. Wrench extensions (cheater bars) might be needed for some workers to exert an applicable amount of torque.

Standard hydraulic flanges (Fig. 6) overcome both of these problems. Flanges use an O-ring to seal a joint and contain pressurized fluid. An elastomeric O-ring rests in a groove on a flange and mates with a flat surface on a port—an arrangement similar to the FFOR fitting. The O-ring flange is attached to the port using mounting bolts that tighten down onto flange clamps, thus eliminating the need for a large wrench when connecting large-diameter components. When installing flange connections, it is important to apply even torque on the four flange bolts to avoid creating a gap through which the O-ring can extrude under high pressure.

Manufacturers also offer split flanges, which can be installed into existing systems. The basic split-flange fitting consists of four elements: a flanged head connected permanently (generally welded or brazed) to the tube, an O-ring that fits into a groove machined into the end face of the flange, and two mating clamp halves with appropriate bolts to connect the split-flange assembly to a mating surface.

All mating surfaces must be clean and smooth. Joints are more likely to leak if either of the mating surfaces are scratched, scored, or gouged. Additionally, wear tends to accelerate on O-rings which are assembled against rough surfaces. Where perpendicular relationships are critical, all parts must meet appropriate tolerances. While 64-µin. surface finishes are acceptable, most flange manufacturers prefer and recommend 32-µin. finishes on mating surfaces to ensure leak-free connections.

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In a properly designed split-flange assembly, the flange shoulder protrudes approximately 0.010 to 0.030 in. beyond the clamp face to ensure adequate contact and seal squeeze with the mating face (Fig. 7). However, the clamp halves do not actually contact the mating surface. The most critical operation during assembly of a split-flange fitting to its mating surface is to make certain that the four fastening bolts are tightened gradually and evenly in a cross pattern. Air wrenches should not be used because they are difficult to control and can easily over-tighten a bolt.

ASME B16.47 / ANSI / ASME B16.5 Forged Flange Manufacturer

ASME B16.47 Forged Flange Suppliers, Series A and Series B Forged Flange, BS10 Forged Flange, AWWA C207 Forged Flange, EN -1 Forged Flange Price List. ANSI B16.5 Class 150, Class 300, Class 600, Class 900, Class , Class Forged Flanges Manufacturer in India

Stockists of Forged Flange in Duplex Steel, Super Duplex Steel, Stainless Steel, Nickel Alloy, Inconel, Hastelloy, Monel, Titaniun, Incoloy, Copper Nickel, Aluminium, Bronze, Alloy 20, 254 SMO, Mild Steel, Carbon Steel, Alloy Steel, Brass. Forged Flange Exporters & Suppliers in South Africa, Malaysia, Singapore, UK, Philippines, Australia and Dubai, UAE.

Creative Piping Solutions is one of the well-known Manufacturers, Suppliers, and Exporters of Forged Flanges, Where we are instrumental in offering top quality to esteemed customers. we offer a good range of our Forged Flanges, which are manufactured using qualitative raw materials. These Stainless Steel Forged Flanges have features to supply like Hassle-free installation, Rust resistance, Sturdy nature, Compact design, Robustness, Easy installation. Knowing us a renowned organization.

We are engaged in offering an intensive range of those Forged Flanges to satisfy the stress of our clients, which are widely utilized in a variety of industries across the state. we provide a varied range of our high-quality carbon steel A105 Forged Flanges, which are widely recommended due to subsequent features like durability, resistance to corrosion, and high tolerance. Our endeavor is to supply our customers by means of those A350 LF2 Forged Flanges which exhibit high-end quality and sturdiness.

A Forged Flange Jis 16k is often defined as a kind of plate device, which is generally round, which might be attached to the top of a fitting, pipe, valve, or another object so as to facilitate the assembly and disassembly of a piping system. Forged Flange Din En -1 are manufactured in seven primary ANSI ratings, ANSI Class 150, ANSI Class 300, ANSI Class 400, ANSI Class 600, ANSI Class 900, ANSI Class & ANSI Class .

ANSI / ASME B16.5 Forged Flange Specifications

• Flange Size ½” (15 NB) to 48″ (NB)
• Flange Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, LBS, LBS, DIN Standard ND-6,10, 16, 25, 40.
• Flange DIN DIN, DIN, DIN, DIN, DIN, DIN, DIN, DIN, DIN, DIN, DIN, DIN , DIN, DIN, DIN, DIN, DIN, DIN, DIN, DIN
• Flange BS BS , BS, BS, BS10
• Flange Standard ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS , EN, UNI /, DIN, JIS, SABS, GOST-
• Flange Coating/Surface Treatment Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
• Flange Connection Type Ring Type Joint, Lap-Joint Face, Raised Face, Flat Face, Large Male-Female, Small Male-Female, Large, Tongue & Groove, Small Tongue & Groove
• Flange Face Type Flat Face (FF), Raise Face (RF), Ring Joint (RJT)
• Flange Dimensions ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
• Flange JIS 5K, 10K, 16K, 20K, 30K, 40K, 63K
• Flange UNI 6Bar 10Bar 16Bar 25Bar 40Bar
• Flange Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
• Production technique Forged, Heat treated and machined
• Test Certificates EN /3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc
• Flange Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
• Equipment Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
• Flange Origin Indian / West Europe / Japan / USA / Korean

Forged Flanges Class 150 Dimensions

Dimensions Are In Inches. Bolt hole diameter 1/8″ larger than bolt diameter. ANSI/ASME B16.5 Class 150 Forged Flanges.

Forged Flanges Class 300 Dimensions

Dimensions Are In Inches. Bolt hole diameter 1/8″ larger than bolt diameter. ANSI/ASME B16.5 Class 300 Forged Flanges.

Forged Flanges Class 600 Dimensions

Dimensions Are In Inches. Bolt hole diameter 1/8″ larger than bolt diameter. ANSI/ASME B16.5 Class 600 Forged Flanges.

Forged Flanges Class 900 Dimensions

Dimensions Are In Inches. Bolt hole diameter 1/8″ larger than bolt diameter. ANSI/ASME B16.5 Class 900 Forged Flanges.

Forged Flanges Class Dimensions

Dimensions Are In Inches. Bolt hole diameter 1/8″ larger than bolt diameter. ANSI/ASME B16.5 Class Forged Flanges.

Forged Flanges Class Dimensions

Dimensions Are In Inches. Bolt hole diameter 1/8″ larger than bolt diameter. ANSI/ASME B16.5 Class Forged Flanges.

Why Creative Piping Solutions Pvt. Ltd.

• Quality Products:
  • Raw Materials are adeuately tested
  • Conformaity to ASTM, ASME, DIN, EN, JIS.
  • Marking, Heat Number. Specificatios
  • 100% Radiography Test Report
  • Third Party Inspection, Buyer Inspection
• Value Added Services:
  • Epoxy & fbe coating
  • Hot dipped galvanizing.
  • Sand blasting
  • Electro polish or other special finishes
  • Custom shape cutting, fabrication services
  • Threading, soldering
• Manufacturing Expertise:
  • Custom size flanges
  • High quality Industrial Flanges manufacturer.
  • Accurate dimensions
  • Products with unifrom wall thickness
  • We use top quality raw materials
  • Over 10 years of manufacturing experience

Forged Flanges Materials

Most common materials used in the production of Forged Flanges are Carbon Steel, Stainless Steel, Duplex Steel, Nickel Alloys. Complete list of grades, materials, and manufacturing standards are given below.

Carbon Steel Forged Flanges:

• High Temperature Carbon Steel ASTM A105: A53, A106, API 5L
• Low Temperature Carbon Steel ASTM A350: LF1, LF2, LF3
• High Yield Carbon Steel ASTM A694: F42, F52, F60, F65

Alloy Steel Forged Flanges:

• Alloy Steel ASTM A182: F5, F9, F11, F22, F1, F5/F5a, F91

Stainless Steel Forged Flanges:

• Stainless Steel ASTM A182: F304, F304H, F304L, F304N, F304LN, F309H, F310, F310H, F310MoLN, F316, F316H, F316L, F316N, F316LN, F316Ti, F317, F317L, F321, F321H, F347, F347H, F348, F348H, 904L

Duplex Steel Forged Flanges:

• Duplex Steel ASTM A182: Duplex (UNS S – UNS S)
• Super Duplex ASTM A182: UNS S – UNS S

Nickel Alloy Forged Flanges:

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• ASTM B160: Nickel 200 Flange | Nickel 201
• ASTM B166: Inconel 600 Flange
• ASTM B564: Inconel 625 Flange
• ASTM B425: Incoloy 800 Flange
• ASTM B564: Incoloy 825 Flange
• ASTM B564: Monel K400 Flange | Monel 400
• ASTM B564: Hastelloy C276 Flange | Hastelloy B, Hastelloy D, Hastelloy C-276, Hastelloy G

ANSI B16.5 Forged Flanges Manufacturing Process

ASME B16.47 Forged Flanges Application Industries

ASME B16.47 / ANSI B16.5 Forged Flanges Inspection

ANSI B16.5 Forged Flanges Packing & Forwarding

ASME B16.5 Forged Flanges Export & Supply to below mentioned Countries

MIDDLE EAST: Saudi Arabia (KSA), United Arab Emirates (UAE), Iran, Iraq, Jordan, Qatar, Bahrain, Oman, Kuwait, Turkey, Yemen, Syria, Cyprus.
ASIA: Malaysia, India, Taiwan, Cambodia, Singapore, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar.
SOUTH AMERICA: Venezuela, Argentina, Bolivia, Colombia, Ecuador, Guyana, Paraguay, Uruguay, Brazil, Chile.
AFRICA: South Africa, Nigeria, Algeria, Angola, Libya, Egypt, Gabon, Sudan, Equatorial Guinea, The Republic Of Congo.
NORTH AMERICA: USA, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark.
EUROPE: UK, Netherlands, Russia, Norway, Germany, France, Italy, Spain, Ukraine, Belgium, Greece, Hungary, Albania, Austria, Finland, Ireland, Croatia, Slovenia, Malta, Switzerland, Slovakia, Czech Republic, Portugal.

ASME B16.5 Forged Flanges Export & Supply to below Mentioned Cities

Mumbai, Thane, Navi Mumbai, Pune, New Delhi, Secunderabad, Gimhae-si, Haryana, Colombo, Lahore, Thiruvananthapuram, Milan, Moscow, Dallas, Coimbatore, Jakarta, Istanbul, Bangkok, Kuwait City, Sharjah, Petaling Jaya, Ernakulam, Abu Dhabi, Tehran, Calgary, Noida, Riyadh, Vung Tau, Al Khobar, Atyrau, Lagos, Ulsan, Faridabad, Houston, Hanoi, Toronto, Hong Kong, Rajkot, Bengaluru, Chennai, Surat, New York, Caracas, Howrah, Sydney, Ahvaz, Karachi, Algiers, Pimpri-Chinchwad, Vadodara, Kolkata, Gurgaon, Ahmedabad, Chiyoda, Dubai, Seoul, Hyderabad, Singapore, Doha, Jeddah, Manama, Montreal, Brisbane, Los Angeles, Ankara, Ho Chi Minh City, Bhopal, Mexico City, Ludhiana, Aberdeen, Cairo, Geoje-si, Perth, Santiago, Chandigarh, Indore, Kuala Lumpur, Rio de Janeiro, Dammam, London, Muscat, Edmonton, Busan, Visakhapatnam, Bogota, Melbourne, Madrid, La Victoria, Granada, Courbevoie, Al Jubail, Port-of-Spain.