ASME B16.5, ASME B16.47 A(MSS SP-44),ASME B16.47-B/API 605,AWWA C207 Flanges

Chemical Requirements (Composition, %, max)

Mechanical Requirements

"The Differents Between API and ANSI Flanges" The difference between ASME/ANSI and API flanges is the fabrication material and the higher rated API operating pressure. ASME/ANSI flanges are common in industrial process systems handling water, steam, air and gas. API flanges are manufactured for high strength operating refinery systems with products such as oil and explosive gases. The flange standards API 6A and ASME/ANSI B16.5 are similar dimensionally - but the API 6A flanges are rated for higher pressures as shown in the table below:

1) In the old API standard, flanges ranged from 11/2 to 10(20) inches.

Flanges
We offer a comprehensive range of Flanges including Slip on Flanges (SORF), astm a182 flanges, monel 400 flanges, astm a181 flanges, Weld Neck Flanges, Blind Flanges, Socket Weld Flanges, Spectacle Flanges. These flanges are designed using finest grade of stainless steel to ensure long service life. Our range is available in ANSI, DIN and BS standards. Our Slip on Flanges (SORF), Socket Weld Flanges (SWRF), Weld Neck Flanges are widely acknowledged for dimensional accuracy, chemical resistance, high tensile strength and durability.
Slip On Flanges (SORF)
Slip on flanges are bored slightly larger than the outer Diameter of the matching pipe. The pipe slips into the flange prior to welding both inside and outside to prevent leaks. Our high quality slip on flanges are suitable for lower pressure applications. Their ease of fitting and welding reduces fabrication costs. We can also customize slip on flanges to meet the specific application requirements of the client.
Specifications :
Stainless Steel : ASTM A 182, A 240

Grade : F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L,

Duplex stainless steel : UNS S31803, 2205,

Super duplex stainless steel : UNS S32750

Carbon Steel : ASTM A 105, ASTM A 181

Alloy Steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel alloys : Monel 400 & 500, inconel 600 & 625, incolloy 800, 825, hastelloy C22, C276

Copper alloys : Copper, brass & gunmetal

Size : 1/8" NB to 48"NB

Class : 150, 300, 400, 600, 900, 1500 & 2500

Standards:
•ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
•DIN: DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
•B.S: BS4504, BS4504, BS1560, BS10

Slip On Flanges (SORF)
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Weld Neck Flanges (WNRF)
We provide a comprehensive Weld Neck Flanges (WNRF) designed in line with international quality standard. These flanges come with welding neck, which is hot formed from a circular section of steel plate having a small co-axial hole in the center. Our lightweight weld neck flanges find extensive application in engineering and construction industries.
Specifications:
Stainless steel : ASTM A 182, A 240

Grade: F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L,

Duplex stainless steel : UNS S31803, 2205,

Super duplex stainless steel : UNS S32750

Carbon steel : ASTM A 105, ASTM A 181

Alloy steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel alloys : Monel 400 & 500, inconel 600 & 625, incolloy 800, 825, hastelloy C22,C276

Copper alloys : Copper, brass & gunmetal

Size : 1/8" NB to 48"NB

Class : 150, 300, 400, 600, 900, 1500 & 2500

Standards :
•ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
•DIN: DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
•B.S: BS4504 , BS4504, BS1560, BS10

Weld Neck Flanges (WNRF)
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Socket Weld Flanges (SWRF)
Our Socket Weld Flange (SWRF) is a device, which is welded to the end of pipe so that the pipe can be bolted to another pipe with a similar flange. The stainless steel socket weld flanges allow a pipe to be disconnected and reconnected with ease. Our range is fabricated using quality tested raw material to ensure durability and high performance. These are available in different dimensional specifications to meet the requirements of clients.
Specifications :
Stainless Steel : ASTM A 182, A 240

Grade : F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L,

Duplex stainless steel : UNS S31803, 2205,

Super duplex stainless steel : UNS S32750

Carbon steel : ASTM A 105, ASTM A 181

Alloy steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel alloys : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276

Copper alloys : Copper, brass & gunmetal43033

Size : 1/8" NB to 48"NB

Class : 150, 300 ,400 ,600, 900, 1500 & 2500

Standards :
•ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
•DIN: DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
•B.S: BS4504, BS4504, BS1560, BS10

Socket Weld Flanges (SWRF)
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Blind Flanges (BLRF)
We supply Blind Flange (BLRF) that is used to close the end of the pipe, valves, pressure vessel openings and other channels where one end needs to be blanked off. These are developed using quality stainless steel and are widely used in paper and pulp industries. We also offer customization on our range as per the specification of clients.
Specifications :
Stainless Steel : ASTM A 182, A 240

Grade : F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L,

Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750

Carbon Steel : ASTM A 105, ASTM A 181

Alloy Steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel Alloys : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276

Copper Alloys : Copper, Brass & Gunmetal

Size : 1/8" NB to 48"NB

Class : 150, 300, 400, 600, 900, 1500 & 2500

Standards :
•ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
•DIN: DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
•B.S: BS4504, BS4504, BS1560, BS10

Blind Flanges (BLRF)
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Lapped Joint Flanges
Our range of Lapped Joint Flanges are mainly used in those piping, which is fitted with the lapped pipe or with the stub end lap joint flange. This arrangement is perfect for systems that require dismantling for inspection and cleaning. Our range of lap joint have curved radius at the bore and face to accommodate a lap joint stub end. We can offer lap joints for different pressure ratings based upon the requirement of the clients.
Specifications :
Carbon steel : ASTM A 105, ASTM A 181

Alloy steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel alloys : Monel 400 & 500, inconel 600 & 625, incolloy 800, 825, hastelloy C22,C276

Copper alloys : Copper, brass & gunmetal

Size : 1/8" NB to 48"NB

Class : 150, 300, 400, 600, 900, 1500 & 2500

Standards :
•ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
•DIN: DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
•B.S: BS4504, BS4504, BS1560, BS10

Lapped Joint Flanges
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Screwed Flange
We offer Screwed Flange, which is available in stainless steel, carbon steel and nickel alloy material. Designed in conformation with international quality standard, our range finds a wide application in power plant, chemical & food and drilling & well building industries. We also provide screwed flange as per the drawings and specifications provided by the clients.
Specifications :
Stainless steel : ASTM A 182, A 240

Grade : F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L,

Duplex stainless steel : UNS S31803, 2205,

Super duplex stainless steel : UNS S32750

Carbon steel : ASTM A 105, ASTM A 181

Alloy steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel alloys : Monel 400 & 500, inconel 600 & 625, incolloy 800, 825, hastelloy C22,C276

Copper alloys : Copper, brass & gunmetal

Size : 1/8" NB TO 48"NB

Class : 150, 300, 400, 600, 900, 1500 & 2500

Standards :
•ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
•DIN: DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
•B.S: BS4504, BS4504, BS1560, BS10

Forged Flanges
ASTM / ASME / ANSI / ASA Standards
a. Standards of Flanges
B16.47 Large Diameter Steel Flanges: NPS 26 through NPS 60 This Standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, and testing for pipe flanges in sizes NPS 26 through NPS 60 and in ratings Classes 75, 150,0300, 400, 600, and 900. Flanges may be cast, forged, or plate (for blind flanges only) materials. Requirements and recommendations regarding bolting and gaskets are also included.

The American Society of Mechanical Engineers issues standards for mechanical and piping design. ASME standard B16.47 covers large diameter pipes up to a 60-inch bore. ASME standard B16.7 series A flanges are equivalent to MSS SP44 flanges. ASME standard B16.7 series B matches API 605 flanges.

B16.5 Pipe Flanges and Flange Fittings standard covers pressure-temperature ratings, materials, dimensions, tolerances,marking, testing, and methods of designating openings for pipe flanges and flanged fittings.The standard includes flanges with rating class designations 150, 300, 400, 600, 900, 1500, and 2500 in sizes NPS 1/2 through NPS 24, with requirements given in both metric and U.S units. The Standard is limited to flanges and flanged fittings made from cast or forged materials, and blind flanges and certain reducing flanges made from cast, forged, or plate materials. Also included in this Standard are requirements and recommendations regarding flange bolting, flange gaskets, and flange joints.

API Standards
API flanges are designed to handle very high pressures and temperatures. API flanges have a smaller bolt circle than MSS flanges. All API flanges are ring joint flanges. API flange standards start with a number followed by a letter. API standard 17D is the specification for sub-sea well head flanges.

"The Differents Between API and ANSI Flanges"
The difference between ASME/ANSI and API flanges is the fabrication material and the higher rated API operating pressure. ASME/ANSI flanges are common in industrial process systems handling water, steam, air and gas. API flanges are manufactured for high strength operating refinery systems with products such as oil and explosive gases. The flange standards API 6A and ASME/ANSI B16.5 are similar dimensionally - but the API 6A flanges are rated for higher pressures as shown in the table below

Flange standard series
American Standard Series
ASME/ANSI B16.5 Class 150 BL
ASME/ANSI B16.5 Class 300 BL
ASME/ANSI B16.5 Class 600 BL
ASME/ANSI B16.5 Class 900 BL
ASME/ANSI B16.5 Class 1500 BL
ASME/ANSI B16.5 Class 2500 BL
ASME B16.47 Series A/MSS SP-44 Class 150 BL
ASME B16.47 Series A/MSS SP-44 Class 300 BL
ASME B16.47 Series A/MSS SP-44 Class 600 BL
ASME B16.47 Series A/MSS SP-44 Class 900 BL
ASME B16.47 Series B/API 605 Class 75 BL
ASME B16.47 Series B/API 605 Class 150 BL
ASME B16.47 Series B/API 605 Class 300 BL
ASME B16.47 Series B/API 605 Class 600 BL
ASME B16.47 Series B/API 605 Class 900 BL
ASME B16.48 Class 150
ASME B16.48 Class 300
ASME B16.48 Class 600
ASME B16.48 Class 900
ASME B16.48 Class 1500
ASME B16.48 Class 2500
ASME/ANSI B16.5 Class 150 LJ
ASME/ANSI B16.5 Class 300 LJ
ASME/ANSI B16.5 Class 600 LJ
ASME/ANSI B16.5 Class 900 LJ
ASME/ANSI B16.5 Class 1500 LJ
ASME/ANSI B16.5 Class 2500 LJ
ASME B16.36 Class 300, Welding Neck, Slip-On and Threaded
ASME B16.36 Orifice Flanges Class 400, Welding Neck2
ASME B16.36 Orifice Flanges Class 600, Welding Neck2,3
ASME B16.36 Orifice Flanges Class 900, Welding Neck2
ASME B16.36 Orifice Flanges Class 1500, Welding Neck2
ASME B16.36 Orifice Flanges Class 2500, Welding Neck2
Ring Joint Facings ASME/ANSI B16.5 & B16.47-1
Ring Joint Facings ASME/ANSI B16.5 & B16.47-2
Ring Joint Facings ASME/ANSI B16.5 & B16.47-3
Ring Joint Facings ASME/ANSI B16.5 & B16.47-4
ASME/ANSI B16.5 Class 150 SW
ASME/ANSI B16.5 Class 300 SW
ASME/ANSI B16.5 Class 600 SW
ASME/ANSI B16.5 Class 1500 SW
ASME/ANSI B16.5 Class 150 SO
ASME/ANSI B16.5 Class 300 SO
ASME/ANSI B16.5 Class 600 SO
ASME/ANSI B16.5 Class 900 SO
ASME/ANSI B16.5 Class 150 WN
ASME/ANSI B16.5 Class 300 WN
ASME/ANSI B16.5 Class 600 WN
ASME/ANSI B16.5 Class 900 WN
ASME/ANSI B16.5 Class 1500 WN
ASME/ANSI B16.5 Class 2500 WN
ASME B16.47 Series A/MSS SP-44 Class 150 WN
ASME B16.47 Series A/MSS SP-44 Class 300 WN
ASME B16.47 Series A/MSS SP-44 Class 600 WN
ASME B16.47 Series A/MSS SP-44 Class 900 WN
ASME B16.47 Series B/API 605 Class 75 WN
ASME B16.47 Series B/API 605 Class 150 WN
ASME B16.47 Series B/API 605 Class 300 WN
ASME B16.47 Series B/API 605 Class 600 WN
ASME B16.47 Series B/API 605 Class 900 WN

ANSI/AWWA C207-07, AWWA Standard for Steel Pipe Flanges for Waterworks Service-Sizes 4 In. Through 144 In. (100 mm Through 3,600 mm)
AWWA C207 Class B-Ring and Blind Flanges
AWWA C207 Class B-Hub and Blind Flanges
AWWA C207 Class D-Ring and Blind Flanges
AWWA C207 Class D-Hub and Blind Flanges
AWWA C207 Class E-Ring and Blind Flanges
AWWA C207 Class E-Hub and Blind Flanges
AWWA C207 Class F-Ring and Blind Flanges

BS Standards
BS 10:1962 Specification for Flanges and Bolting for Pipes, Valves and Fittings (covering plain, boss, integrally cast or forged, and welding neck type flanges).
BS 1560 : WELDING NECK FLANGE, SOCKET WELDING FLANGE, SLIP-ON BOSS FLANGE, BLIND FLANGE, SCREWED BOSS FLANGE, LAPPED FLANGE. Pressure Class : 150 , 300 , 400 , 600 , 900, 1500 , 2500
BS 4504(ISO 7005-1: 1992 (E) Specification for Steel Flanges (pressure ranges PN 2.5 to PN 40 and nominal sizes up to DN 4000)

BS 3293 Class 150 SO
BS 3293 Class 300 SO
BS 3293 Class 600 SO
BS 3293 Class 150 WN
BS 3293 Class 300 WN
BS 3293 Class 600 WN

Material:
ASTM A105; ASTM A350, A694 F42/F46/F52/F60/F65
ASTM A182 F304/304L,F316/316L, F321, F310,
ASTM A 182 F51/F53/F55
Size:1/2"-48"

ASME/ANSI B16.47 : WELDING NECK FLANGE, BLIND FLANGE. (SERIES A & B) Pressure Class : 75, 150, 300, 400 , 600 , 900
ASME/ANSI B16.36 : (ORIFICE FLANGES) WELDING NECK FLANGE, SLIPON FLANGE, THREADED FLANGE. Pressure Class : 300, 400 , 600 , 900, 1500 , 2500
ASTM/ANSI B16.48:( Figure-8 blanks) Pressure Class : 150, 300, 400 , 600 , 900,1500, 2500
MSS SP44 : WELDING NECK FLANGE, BLIND FLANGE. Pressure Class :300, 400 , 600 , 900
API 6A : WELDING NECK FLANGE, THREAD FLANGE,BLIND FLANGE. Pressure : 2000Psi, 3000Psi, 5000Psi, 10000Psi, 15000Psi, 20000Psi, 25000Psi

Material:
ASTM A105; ASTM A350, A694 F42/F46/F52/F60/F65
ASTM A182 F304/304L,F316/316L, F321, F310,
ASTM A 182 F51/F53/F55
Size:1/2"-48"

DIN Flanges
DIN Flange Standards:
DIN 2527 Blind flange - PN6-PN 100
DIN 2576 Flat flange for welding - PN 10
DIN 2642 Lapped flange - PN 10
DIN 2655 Lapped flange - PN 25
DIN 2656 Lapped flange - PN 40
DIN 2641 Lapped flange - PN 6
DIN 2673 Lose flange and ring with neck for welding - PN 10
DIN 2561 Oval flange, with neck threaded - PN 10 and PN 16
DIN 2558 Oval flange, with neck threaded - PN 6
DIN 2566 Threaded flange with neck - PN 10 and PN 16
DIN 2630 Welding neck flange - PN 1 and PN 2.5
DIN 2632 Welding neck flange - PN 10
DIN 2637 Welding neck flange - PN 100
DIN 2633 Welding neck flange - PN 16
DIN 2638 Welding neck flange - PN 160
DIN 2634 Welding neck flange - PN 25
DIN 2628 Welding neck flange - PN 250
DIN 2629 Welding neck flange - PN 320
DIN 2635 Welding neck flange - PN 40
DIN 2627 Welding neck flange - PN 400
DIN 2573 Welding neck flange - PN 6
DIN 2636 Welding neck flange - PN 64
DIN 2631 Welding neck flange - PN6
Forged Steel Flanges ,Casting Steel Flanges :
Material:
Carbon Steel: DIN 17175: ST35.8,ST45.8, ST37.2,ST37, DIN 17173: ST35N
Stainless Steel: W.Nr 1.4301, W.Nr 1.4306, W.Nr 1.4401, W.Nr 1.4404, W.Nr 1.4541
Duplex Stainless Steel: W.Nr 1.4362, W.Nr1.4417, W.Nr1.4462, W.Nr1.4460, W.Nr1.4501, W.Nr1.4410, W.Nr 1.4507

API Standards
API 605 Large-diameter Carbon Steel Flanges (nominal Pipe Sizes 26 Through 60; Classes 75, 150, 300, 400, 600 And 900)

MSS Standards
MSS SP-9 standard for spot facing flanges.
MSS SP-44 standard for steel pipeline flanges. MSS SP-60 standard for connecting flange joint.
MSS SP-9 standard for spot facing flanges.
MSS SP-44 standard for steel pipeline flanges.
MSS SP-60 standard for connecting flange joint.

AS Standards
AS4087-2004
AS2129 Flanges for Pipes, Valves and Fittings

AWWA Standards
AWWA C207 Steel Pipe Flanges for Waterworks Service--Sizes 4 In. Through 144 In. (100 mm Through 3600 mm).

EN1092-1 Standards
EN1092-1 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories.

GOST Standards
12820-80 Russian pipe flanges standard for flat type.
12821-80 Russian pipe flanges standard for weld neck type.

JIS Standards
B2220 Steel Welding Pipe Flanges.

KS Standards
B1503 Steel Welding Pipe Flanges.

SABS/SANS Standards
SANS-1123 South African pipe flanges standard.

TOTAL Standards
TOTAL GS EP PLR 222 Carbon steel flanges and branch outlet fittings and forged
components for pipelines (sweet service)
TOTAL GS EP PLR 223 Carbon steel tees for pipelines (sweet service)

UNI Standards
UNI 2276-67 Flat Flange.
UNI 2277-67 Flat Flange.
UNI 2278-67 Flat Flange.
UNI 6083-67 Flat Flange.
UNI 6084-67 Flat Flange.
UNI 6088-67 Lap Joint Flange, Loose Flange.
UNI 6089-67 Lap Joint Flange, Loose Flange.
UNI 6090-67 Lap Joint Flange, Loose Flange.
UNI 2299-67 Lap Joint Flange, Loose Flange.
UNI 2300-67 Lap Joint Flange, Loose Flange.
UNI2280-67 Weld Neck Flange.
UNI2281-67 Weld Neck Flange.
UNI2282-67 Weld Neck Flange.
UNI2283-67 Weld Neck Flange.
UNI2284-67 Weld Neck Flange.
UNI2285-67 Weld Neck Flange.
UNI2286-67 Weld Neck Flange.
UNI2253-67 Threaded Neck Flange.
UNI2254-67 Threaded Neck Flange.
UNI6091-67 Blind Flange.
UNI6092-67 Blind Flange.
UNI6093-67 Blind Flange.
UNI6094-67 Blind Flange.
UNI6095-67 Blind Flange.
UNI6096-67 Blind Flange.
UNI6097-67 Blind Flange.

b. Raw material:
All pipe flanges in carbon, stainless, alloys and chrome steel materials. ( See Technology pages )

c. Flange types:
Weld Neck (WN), Slip on (SO), Blind (BL), Threaded (THR), Socket Weld (SW), Lap Joint (LJ), Orifice Flanges, RTJ and custom flanges.
d. Size:
Sizes Range from 1/2" to 80", DN15-DN2000.
e.Pressure classes:
ANSI, ASME, ASTM, BS10 - Lbs/Psi 150, 250, 300, 350, 400, 600, 900, 1500, 2500
JIS B2220, KS1503 - 5K, 10K, 16K, 20K, 30K
DIN, UNI, EN1092-1, BS 4504, GOST12820/12821-80 etc - PN6, PN10, PN16, PN25, PN40, PN63, PN100
SANS/SABS 1123 - Class 600/3, 1000/3, 1600/3, 2500/3, 4000/3

Flanges:
- Com Pescoço (Welding Neck), Encaixe (Socket Welding), Sobreposto (Slip On), Roscado (Threaded), Cego (Blind), Solto (Lap Joint), Pescoço com tomada de pressão (Welding Neck Orifice).

- Diâmetro nominal de 1/2 polegada até 114 polegadas, em todas as espessuras conforme ANSI B36.10 e ANSI B36.19 ou conforme desenho.

- Norma dimensional ASME B16.5 / B16.36 / B16.47 Serie “A” e Serie “B”/ MSS SP-44 / API 605 / API 6ª / API 17D / AWWA C207, ou Forjado Especial conforme desenho.

- Material ASTM A-105 / ASTM A-182 Gr. F5, F5a, F9, F11, F12, F304, F304H, F304L, F316, F316H, F316L, F317, F317H, F317L, F321, F321H, F321H, F347, F347H, F347L/ ASTM A-350 Gr.LF1, LF2, LF3 / ASTM A-694 Gr. F42, F46, F48, F50, F52, F56, F60, F70, F75.

Figura Oito:
- Figura oito (Spectacle Blind), Anel espaçador e Raquete (Spacer Ring and Paddle).

- Diâmetro nominal de 1/2 polegada até 42 polegadas ou conforme desenho.

- Norma dimensional N120 Rev.C / ASME B16.48, ou Forjado especial conforme desenho.

- Material ASTM A-36 / ASTM A-283 Gr.C / ASTM A-285 Gr.C / ASTM A-515 Gr.70 / ASTM A-516 Gr.55, Gr.60, Gr.70 / ASTM A-387 Gr.TP5a, TP9, TP11, TP12 / ASTM A-694 Gr.F42, F46, F48, F50, F52, F56, F60, F70 / ASTM A-240 TP304, TP304H, TP304L, TP316, TP316H, TP316L, TP317, TP317H, TP317L, TP321, TP321H, TP321L, TP347, TP347H, TP347L