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ASTM A694 is the standard specification to cover carbon and alloy steel forging for pipe flanges, fitting, valves and other parts for high-pressure transmission service. The steel conforms to standard chemical composition requirements which have been chemically analysed and adheres to full casting and tensile strength properties requirements.

There are several grades of material based on the minimum yield requirements: for example. A694 F60 indicates a minimum yield strength of 60ksi.

Concept Steel offer a range of materials within the A694 specification including A694 F60, A694 F65, A694 F70 and A694 F52, all high yield offshore carbon steels to enable supply to the shipbuilding, ship repair and oil, gas and petrochemical markets

Type of Flange: 
WN(welding-neck); SO(slip-on); PL(Plate); BL(Blind); Th(Threaded); SW(scket-welding); LF/SE(lapped flange/stub end); LWN(long welding neck); Orifice flange; Reducing flange; API flange; Integral/Compact flange; Spectacle blind, Lind spade and spacer, Paddle blind, Paddle spacer; Orifice plate; Pipe plate, Bleed ring. 

Standard of Flange: 
ANSI: ANSI B16.5, ANSI B16.47, ANSI B16.48, ANSI B16.36, ASME B16.5, API 6B, 6BX, ISO7005-1, BS4504-3.1, 
JPI 7S-15-93, NF E29-203, API608-81, ASME B16.36; 
NORSOK STANDARD L-005; JIS: JIS B2220; DIN: DIN2630, 2631, 2632, 2633, 2634, 2635, 2636, 2637, 2638, 2501(WN); DIN2573, 2576, 2527, 2655, 2656(PL); DIN2566(TH) 



Manufacturing Process of Flange: 
Push, Press, Forge, Cast, etc. 

Size of Flange: 
1/2''~60'' 

Class Rating of Flange: 
Class150~2500 

Flange Facing: 
RF(raised face); FF(flat face); RTJ(ring type joint); 
TG(tongue and groove face); MFF(male and female face) 

Material of Flange: 

Nickel Alloy Steel: 
Alloy 200/Nickel 200/N02200/2.4066; 
Alloy 201/Nickel 201/N02201/2.4068; Alloy 400/Monel 400/N04400/NS111/2.4360; 
Alloy K-500/Monel K-500/N05500/2.4375; Alloy 600/Inconel 600/N06600/NS333/2.4816; 
Alloy 601/Inconel 601/N06601/2.4851; Alloy 625/Inconel 625/N06625/NS336/2.4856; 
Alloy 718/Inconel 718/N07718/GH169/GH4169/2.4668; 
Alloy 800/Incoloy 800/N08800/1.4876; 
Alloy 800H/Incoloy 800H/N08810/1.4876; 
Alloy 800HT/Incoloy 800HT/N08811/NS112/1.4876; 
Alloy 825/Incoloy 825/N08825/2.4858; 
Alloy 925/Incoloy 925/N09925; 
Alloy C-276/Hastelloy C-276/N10276/2.4819; 
Alloy C-4/Hastelloy C-4/N06455/NS335/2.4610; 
Alloy C-22/Hastelloy C-22/N06022/2.4602; 
Alloy 2000/Hastelloy C-2000/N06200/2.4675; 
Alloy B/Hastelloy B/NS321; 
Alloy B-2/Hastelloy B-2/N10665/NS322/2.4617; 
Alloy B-3/Hastelloy B-3/N10675/2.4600; 
Alloy X/HASTELLOY-X/N06002/2.4465; 
Alloy G-30/HASTELLOY G-30/N06030/2.4603; 
Alloy C-2000/HASTELLOY C-2000/N06200; 
Alloy X-750/INCONEL X-750/N07750/GH145/2.4669; 
Alloy 20/Carpenter 20Cb3/N08020/NS312/2.4660; 
Alloy 31/N08031/1.4562; Alloy 901/N09901/1.4898; 
Incoloy25-6Mo/N08925; 
Inconel 783; Alloy-6XN/N08367; Monel 30C 



Carbon Steel
ASTM A106 GR. B, GR. C,; ASTM A333 GR. 1, GR. 3, GR. 6; 
ASTM/ ASME S/A179/ A 179M; 
ASTM/ ASME S/A192/ A 192M; 
ASTM/ ASME S/A210/ A 210M GR. A; 
API 5L GR. B, X42, X52, X60, X65; 
ASTM A860/ A 860M WPHY42, WPHY52, WPHY60, WPHY65, WPHY70; 
ASTM A694 / A 694M F42, F46, F48, F50, F52, F56, F60, F65, F70; 
ASTM/ ASME S/A234/ A 234M WPB, WPC; 
ASTM/ ASME S/A420/ A 420M WPL6, WPL3; 
ASTM/ ASME S/A105/ A 105M; 
ASTM/ ASME S/A266/ A 266M GR. 1, GR. 2, GR. 3, GR. 4; 
ASTM/ ASME S/A350/ A 350M LF1, LF2, LF3; 
ASTM A193 B7, A307 B, A 320 L 7; 

Alloy Steel: 
ASTM/ ASME S/A335/ A 315M P5, P9, P11, P12, P22, P91; 
ASTM/ ASME S/A213/ A 213M T5, T9, T11, T12, T22, T23 T91; 
DIN17175 10CrMo910, 13CrMo44, 10Cr9Mo1VNb; 
WB36 (15NiCuMoNb5); 
ASTM/ ASME S/A234/ A 234M WP5, WP9, WP11, WP12, WP22, WP9; 
ASTM/ ASME S/A182/ A 182M F5, F5a, F9, F11, F12, F22, F91; 
ASTM/ ASME S/A336/ A 336M F5, F9, F11, F12, F22, F91. 

Stainless Steel
304 | 304L | 304H | 305 | 316/316L | 316Ti | 317L | 321/321H | 309S | 310S | 347/347H | S32101 | S32205/S31803 | S32304 | S32750 | S32760 | 904L | 405 | 409 | 410 | 410S | 416 | 420 | 430 | 254SMO | 253MA | 353MA | Incoloy 800H | Incoloy 800HT | Incoloy 825 | Incoloy 901 | Incoloy 925 | Incoloy 926 | Inconel 600 | Inconel 601 | Inconel 625 | Inconel 718 | Inconel X-750 | Hastelloy B | Hastelloy B-2 | Hastelloy C-4 | Hastelloy C-22 | Hastelloy C-276 | Hastelloy X | Hastelloy G
F40/S31254, F20/N08020, F45/S30815, F46/S30600, F47/S31725, F48/S31726, F49/S34565, F56/S33228, F58/S31266, F62/N08367/1.4529 

Duplex Steel/Super Duplex Steel
ASTM / ASME A/SA 182 F51/2205/S31803/1.4462; F53/2507/S32750/1.4410; 
F55/S32760s, F50/S31200; F57/S39277; F59/S32520; 
F60/S32205; F61/S32250; F904L/N08904/1.4539; 254SMO/S31254/1.4574; 
S31050/1.4466; 17-4pH/S17400/1.4548; 
724L; 316Lmod/1.4435; 725LN/310MoLN