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Steel Pipe Flange

Flange Type: Welding Neck/Blind/Socket Weld/Lapped Joint/Slip-on/Plate Flange
Standard: ANSI/ASME B 16.5, DIN, JIS, AWWA, API, ISO, etc.
Material: Carbon Steel --- ASTM A105,ASTM A350 LF1,LF2,LF3,A36,ASTM A234 WPB
                Stainless Steel --- ASTM A403 F304/304L, 316/316L,316Ti,321,317L,310S
                Alloy Steel --- ASTM A234 WP1/5/9/11/12/22/91
Size: NPS from 1/2'' to 24'', CLASS from 150 to 2500
Surface: Light Oiling/Black Painting
Availability:

Size:

No.

Flange standard 

size

Pressure rating

Types 

1

ANSI / ASME FLANGE B16.5 

1/2"~24" 

LBS:150,300,400,600,900,1500,2500

SO,WN,IF,SW,TH,LF/SE,LWN,BL

2

ORIFICE FLANGE B16.36

1''~24” 

LBS:300,400,600,900,1500,2500 

SO,WN,TH

3

LONG WELDING NECK FLANGE B16.5

1/2"~24" 

LBS:150,300,400,600,900,1500,2500

LWN

4

ASME B16.47-A (MSS SP44 FLANGE)

26"-60"

LBS:150,300,400,600,900

WN,BL,

5

ASME B16.47-B (API 605 FLANGE )

26"-60"

LBS:75,150,300,400,600,900

WN,BL,

6

AWWA C207 FLANGE

4"-120"

TABLE 2,3,4 CLASS B&D

SO,BL,

7

API 590 FIG.8 FLANGE B16.48

1/2"~36" 

LBS:150,300,400,600,900,1500,2500

FIG.8

8

SPACER AND BLANK B16.48

1/2"~36" 

LBS:150,300,400,600

SPACER AND BLANK 

9

BS4504 FLANGE

DN10-2000

PN:2,5,6,10,16,25,40

CODE:101,111,112,113,105

10

SABS 1123 FLANGE

DN10-600

KPA: 600,1000,1600,2500,4000

SO,WN,SW,TH,LJ,BL

11

JIS B2220(KS B1503) FLANGE

DN10-1500

5K,10K,16K,20K,30K,40K

SO,WN,SW,TH,LJ,BL,

12

GOST 12820/1-80

DN15-1200

PN:1,1.6,2.5,4,6.3,10

SO,WN 

13

AS 2129 FLANGE

DN15-1200

TABLE:D,E,F,H

SO,BL,

14

NS FLANGE

DN15-800

PN: 6,10,16,40

SO,BL,

15

VSM FLANGE

DN15-800

PN: 6,10,16



Casting flange is a commonly used flange technology, which has the advantages of high production efficiency and low production cost, and is suitable for medium and low pressure pipelines. Forged pipes are recommended for pipes operating at high pressures.


The casting flange is made of iron filings. After the iron mill is melted, the molten iron is poured into the mold, cooled, and processed. Some processing procedures are to pour the molten iron into the mold and heat it in the forging after molding. A form of processing.


Understanding customers requirement and ensuring to supply as per these requirements is realised with the help of quality assurance at Threeway Steel one of the best Flange Manufacturers in China , our product range include all types of flanges such as MS Flange ( Mild Steel ) , Raised face flange , Weld neck flange, Bellow Flange , and Flanges according to custom requirement.

the processing of flange

Steel Pipe Flange

Material:Carbon Steel, Stainless Steel.

Dimension: 1/2"-124"
Usage: Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, water and nuclear power etc.
Manufacture Standard:ANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC.
Packaging Detail: Plywood pallet or cases, according to client's requirement....

Payment:TT, LC , OA , D/P

steel pipe flange

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