Pipe fittings & flanges

China seamless steel pipe supplier,Structural steel pipe,Drill pipe
Slip-on flange
Slip-on flange

Slip-on flange

Size :NPS from 1/2'' to 24'', CLASS from 150 to 2500

Standard :ANSI/ASME B 16.5, DIN, JIS, AWWA, API, ISO etc.

Grade:CLASS150,CLASS300,CLASS400,CLASS600, CLASS900, CLASS1500, CLASS2500

Carbon Steel-ASTM A105,ASTM A350 LF1,LF2,LF3,A36,ASTM A234 WPB

Product standard


For Carbon Steel Forgings for Piping Applications


For Carbon Steel Forgings for general-purpose piping ; GR.60,GR70


For Carbon and low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components; Blind flanges Steel material: LF1, LF2, CL1/CL2, LF3 CL1/CL2, LF5, LF6, LF9,

ASTM A694/

ASTM A694M-2016

For Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service; Blind flanges Steel material: A694 F42 F52 F60 F65, A516 Gr60, 65, 70


Flanges and their joints- Circular flanges for pipes, valves,fittings and accessories, PN designated and for a single series of flanges specifies requirements for circular steel flanges in PN designations PN2.5 to PN400 and nominal sizes from DN10 to DN4000. Steel material:P250GH, P245GH, P280GH, 16Mo3, 13CrMo4-5,11CrMo9-10

ANSI / ASME B16.5-2017

Covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanges fittings. Pressure: CLASS150, CLASS300, CLASS400, CLASS600, CLASS900, CLASS1500, CLASS2500

ASME B16.47

Large Diameter Steel Flanges;Series A flanges and Series B flanges

ASTM A961 / ASTM A961M-19

For Common requirements for steel flanges, forged fittings, valves, and parts for piping applications

DIN 2527

Blind flange nominal pressure PN6 to PN100

ANSI / AWWA C207-13

For Waterworks Service, Size 4 inch Through 144Inch ( 100mm through 3,600mm); describes ring- type slip-on flanges and blind flange

JIS B2220

Steel Pipe Flanges nominal sizes 10A to 1500 A for nominal pressures 5K,10K, 10K light type, 16K, 20K, 30K, 40K and 63K which are used to join parts for piping, such as steel pipes and valves used for ordinary piping, pressure piping, high pressure piping, high temperature piping, alloy steel piping and stainless steel piping for steam, air, gas, water, oil, etc.JIS G3201 ( SF390A) , JIS G3202, JIS G5101 (SC 410, SC 480), JIS G5151,

JIS G 3203 ( SFVA F1, SFVA F11A), JIS G5151 ( SCPH 11, SCPH 22),

JIS G 4304 (SUS 304, SUS 304L, SUS 316L, SUS 316), JIS G 3214 ( SS F316

ASTM A182/ A182M -18

For Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

F304/304L, F316/316L, F321, F309H, F310, F317, F317L, F347, F347H, F348, F348H, F904L.,etc, F1, F5 F9, F11, F91.

Product description

Flange type



Working pressure

flange Face



Blind Flange

Carbon Steel

ASTM / ASME A 350 LF 2

Alloy Steel

ASTM / ASME A 182 GR F 5, F 9, F 11, F 12, F 22, F 91

Stainless Steel:

ASTM / ASME SA 182 F 304, 304L, 304H, 309H, 310H, 316, 316H, 316L, 316 LN, 317, 317L, 321, 321H, 347, 347 H.

Duplex Steel:

ASTM / ASME SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61.

Nickel Alloy

ASTM / ASME SB 564 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)
ASTM / ASME SB 160 UNS 2201 (NICKEL 201 )
ASTM / ASME SB 472 UNS 8020 (ALLOY 20 / 20 CB 3)

Copper Alloy

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

NPS 1/2inch - NPS 144inch



raised face, flat face, or RTJ face

Black painting flanges, hot-dip zinc galvanized coating flanges, electroplated zinc coating flanges

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