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Duplex Steel S31803 Socket Weld Flanges
  • Duplex Steel S31803 Socket Weld FlangesDuplex Steel S31803 Socket Weld Flanges
  • Duplex Steel S31803 Socket Weld FlangesDuplex Steel S31803 Socket Weld Flanges

Duplex Steel S31803 Socket Weld Flanges

Zhejiang Hangong Flange Technology Co., Ltd. is a professional duplex steel S31803 socket weld flanges manufacturer and supplier in China. Our main projects including stainless steel flanges, duplex steel flanges, super duplex steel flange, pipe fitting manufacturing and sales. We have produced duplex steel S31803 socket weld flanges for many years, looking forward to reaching a long-term cooperative relationship with you.

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Product Description

Duplex steel S31803 socket weld flanges , as the name suggests is a biphasic steel bar, steel ingot or plate such as the production of raw materials for the flange, referred to as biphasic steel flange, flange is also called flange or protruding edge. It is the part that connects the pipe to the pipe. Connected to tube end. 


There are holes on the flange, and the bolts can be worn to make the two flanges tightly connected. The flanges are gasketed. The flange connection consists of a pair of flanges, a gasket and a number of bolts and nuts. The gasket is placed between the sealing surface of the two flanges. 


After tightening the nut, the specific pressure on the surface of the gasket will be deformed after reaching a certain value, and the uneven part of the sealing surface will be filled to make the connection tight without leakage. Some pipe fittings and equipment have their own flanges, which are also flange connections. Flange connection is an important connection mode in pipeline construction.

 

Parameter (Specification) of Duplex Steel S31803 Socket weld Flanges  

Standard

Type

Class

Size

ASME B16.5

WN/LWN/SO/Blind/Lap Joint

150#-2500#

1/2"-24"

(Except Blind Flange 2500lb 1/2"-12")

SW flange

150#-1500#

1/2"-3"

(Except 1500# 1/2"-2 1/2")

Threaded

150#-900#

1/2"-24"

1500# 2500#

1/2"-2 1/2"

ASME B16.47 Series A

WN/blind flange

150# -900#

22"-48"

(Except 900# Size:26"-48")

ASME B16.47 Series B

WN/blind flange

75#-300#

26"-48"

400# 600# 900#

26"-36"

DIN2527

Blind flange

PN6-PN100

DN10-DN1000

DIN2543

SO flange

PN16

DN10-DN1000

DIN2544

SO flange

PN25

DN10-DN1000

DIN2545

SO flange

PN40

DN10-DN500

DIN2565

Threaded flange with Neck

PN6

DN6-DN200

DIN2566

Threaded flange with Neck

PN16

DN6-DN150

DIN2567

Threaded flange with Neck

PN25 PN40

DN6-DN150

DIN2568

Threaded flange with Neck

PN64

DN10-DN150

DIN2569

Threaded flange with Neck

PN100

DN10-DN150

EN1092-1:2002

Plate flange for welding/

loose plate flange with weld-on plate collar or for lapped pipe

 end/Blind Flange/WN flange

PN2.5-PN100

DN10-DN4000

JIS B2220

Welding flange,

 lap joint flange,

 threaded flange

PN6-PN100

DN10-DN1500

BS4504 BS10 TableD/E

Plate Flange for welding/

WN flange/blank Flange

PN6-PN100

DN10-DN1500

Other Products

Anchor/swivel/girth/l

ap joint/reducing/orifice

Spectacle blind/paddle blind/

spacer ring/orifice plate/bleed ring

Special Products: rings/

forgings/disc/shaft sleeves

Sealing Surface

RF FF RTJ TF GF LF LM

Flange Face Finish

Stock finish/spiral serrated/

concentric serrated/smooth finish

(Ra 3.2 and 6.3 micrometers)

125-250 AARH(it is called smooth finish)

250-500 AARH(it is called stock finish)

Coating

Vanish, yellow paint, anti-rust oil, galvanizing etc

Material Grade

Nickel Alloy Steel

ASTM/ASME B/SB564 UNS N02200(NICKEL 200), 

UNS N04400(MONEL 400),

UNS N08825( INCOLOY 825),UNS N06600(INCONEL 600),

UNS N06601(INCONEL 601), UNS N06625(INCONEL 625),

 UNS N10276(HASTELLOY C276),

ASTM/ASME B/SB160 UNS N02201(NICKEL 201), 

ASTM B/SB472 UNS N08020(Alloy 20)

Copper Alloy

ASTM/ASME B/SB151 UNS C70600(CuNi 90/10), 

C71500(CuNi 70/30)

Stainless Steel

ASTM/ASME A/SA182 F304,304L,304H,309H,310H,

316,316H,316L,316LN,

317,317L,321,321H,347,347H

Duplex and Super Duplex Steel

ASTM/ASME A/SA182

 F44,F45,F51,F53,F55,F60,F61

Carbon steel

ASTM /ASME A/SA105(N)

Low Temp Carbon Steel

ASTM/ASME A/SA350 LF2

High Yield Carbon Steel

ASTM/ASME A/SA694 F52,F56 F60, F65, F70

Alloy Steel

ASTM/ASME A/SA182 GR F5,

F9, F11,F12,F22,F91

Titanium

ASTM/ASME B/SB381 Grade 2, Grade 5, Grade 7



Raw materials of Duplex Steel S31803 Socket weld Flanges  

Biphasic steel flange uses biphasic steel as raw material for production, the so-called biphasic stainless steel is in the solid solution of its ferrite phase and austenitic phase about half, the general amount of small phase content also needs to reach 30%. When the content of C is low, the content of Cr is 18%-28% and the content of Ni is 3%-10%. Some steels also contain Mo, Cu, Nb, Ti, N and other alloying elements. 


This kind of steel has the characteristics of austenitic and ferritic stainless steel, compared with ferrite, plasticity, toughness is higher, no room temperature brittleness, intergranular corrosion resistance and welding performance are significantly improved, but also maintain the ferritic stainless steel 475℃ brittleness and high thermal conductivity, with superplasticity and other characteristics. Compared with austenitic stainless steel, it has higher strength and better resistance to intergranular corrosion and chloride stress corrosion. Duplex stainless steel has excellent corrosion resistance, is also a nickel nickel stainless steel.
 



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