weld neck flange
Weld neck flange are most widely used flanged in process piping. It gives the highest level of joint integrity due to Butt-welded with a pipe. These types of flanges are used in high pressure and temperature application. Weld neck flanges are Bulky & costly with respect to other types of flange.


Production instructions
We can produce Amercian Standard, German Standard, Italian Standard, European Standard, Chinese Standard flanges, also offer all kinds of non-standard flanges according to you drawings, diameter ranging from DN15 to DN3000, press rate up to 2500LBS. Flanges are made of carbon steel, stainless steel, alloy steel, duplex ferric-austenitic steel.

Flange Standard

1) ANSI B16.5, ASME B16.47 FLANGE

Size range: 1/2" to 80"  DN15 to DN2000

Design: welding neck, slip on, blind, socket welding, threaded, lap-joint

Pressure: 150#, 300#, 600#,900#,1500#, 2500#

Wall thickness for welding neck flange: STD, SCH40, SCH80, SCH160. SCHXXS

Material: carbon steel A105, stainless steel  304/304L, 316/316L

Coating: black paint, yellow transparent paint, cold and hot dip galvanize

Package: seaworthy plywooden case, wooden pallet

2) EN1092-1 FLANGE

Size range: DN15 to DN2000

Design: type01 plate flange, type02 loose flange, type05 blind flange, type11 welding necking

             type12 slip on flange, type 13 threaded flange

Pressure: PN6, PN10, PN16, PN25, PN40, PN64, PN100

Material: carbon steel C22.8, S235, S235JR, P235GH, stainless steel: 304/304L, 316/316L

Coating: black paint, yellow transparent paint, cold and hot dip galvanize

Package: sea worthy plywooden case, wooden pallet

3) DIN FLANGE

Size range: DN15 to DN2000

Design: slip on flange DIN2573,2576,2502,2503, 2543,2545

             welding neck falnge DIN2631, 2632,2633,2634,2635

              blind flange DIN 2527 PN6, PN10, PN16, PN25, PN40

              threaded falnge DIN2565,2566,2567,2567

              loose flange DIN 2641,2642,2656,2673

Material: carbon steel ST37.2, stainless steel 1.4301, 1.4404

Coating: rust-proof oil, transparent paint, cold and hot galvanize

Package: sea worthy plywooden case, wooden pallet

4) GOST FLANGE

Size range: DN15 to DN 2000

Design : plate falnge 12820-80, welding neck flange 12821-80

Pressure: PN6, PN10, PN16, PN25, PN40

Material: carbon steel CT-20, stainless steel 304/304L, 316/316L

Coating: rust-proof oil, cold and hot galvanize

Package: sea worthy plywooden case, wooden pallet

5) JIS FALNGE

Size ragne : 15A to 2000A

Design: SOP, BIND, SOH,

Puressure: 1K, 2K, 5K, 10K, 16K, 20K, 30K, 40K

Material: carbon steel SS400, stainless  steel SUS304, SUS316

Coating : rust-proof oil, cold  and hot galvanize

Packing: sea worthy plywooden case, wooden pallet

Material: Carbon steel: ASTM A105,A350 LF2,  A694 etc.

                Stainless steel: ASTM A182 F304 , 304L,,F304L,F316,316L , AISI 304 , AISI 321

                Alloy steel: ASTM A182 A182 F12,F11,F22,F5,F9,F91etc.

Eddy Test on line. X-Ray Fault detection, Direct Reading Spectrometer, Impact test machine.  Physical & Chemical Testing,  Manganese phosphorus silicon chemical analyser, Tension Test, Hardness tester, etc.

(1) PIPE FITTINGS SERIES
ASME B 16.9/MSS SP 75 Elbow,Tee,Reducer,Cap,stub end,
Material:CS:A234WPB/WPC,A420WPL3/WPL6/WPL9,A860WPHY52/60/65/70
              AS:A234WP1/5/9/11/22/91
             SS:A403WP304/304L/316/316L/317/321
             Aluminum:1070A,1060,1100,1200 ,2A11,2017,2A12,2024 ,3003    3A21,5A02,5052,5A03,5A05,5A06,5083,5086,5454,6061,6063,6A02,6082,6005 
  
(2)FLANGES SERIES:
DIN 2573 PN6 DIN 2576 PN10 DIN2502 PN16 DIN2503 P25-40 DIN2566 PN16 ,DIN2631-2635 RST37.2 OR C22.8 carbon steel flange 
ANSI B16.5, 150LB 300LB 600LB 900LB 1500LB 2500LB WNRN SORF BLRF THRF SWRF LJRF 
JIS SS400 OR SF440 5K 10K 16K 20K 30K SOPFF SOHFF BLFF 
EN1092 PN6 PN10 PN16 PN25 PN40 TYPE1 TYPE2 TYPE 5 TYPE 12 TYPE 13 
BS4504 SANI1123 1000/3 1600/3 2500/3 T/D T/E T/F