Customized Welding Neck Flange Alloy Flange F51 F55 F53
Technical information:-- Material: Stainless steel 304 and 316 available.
-- Max working pressure 1.6MPa (equal to 232 psi),
testing water pressure: 2.5MPa for JIS sizes (equal to 362.5psi), and 5MPa for EN10312 sizes.
-- Working temperature from -20 to 110 degree centigrade (with Chlorinated butyl rubber O ring),
-- Suit medium: cold water, hot water, compressed air, gas, oil etc
Press fitting range:
Coupling -- Equal coupling, Reducing coupling, Adjustable coupling, coupling with screw;
Elbow -- equal elbow, reducing elbow, elbow with plain end, elbow with screw;
Tee -- equal tee, reducing tee, tee with screw;
Other fittings -- Pipe cap, pipe bridge and Flange.
Sizes range:
The norminal diameters are: DN15, 20, 25, 32, 40, 50, 65, 80 and DN100, including GB 1 and GB 2.
GB 1 series is same size as EN10312, out diameters are: 18, 22, 28, 35, 42, 54, 76.1, 88.9, 108mm.
GB 2 series is same size as JIS G 3448, out diameters are: 15.88, 22.22, 28.58, 34.00, 42.7, 48.6, 76.1, 88.9, 108mm.
Which sizes is suitable for your market?
STANDARD | SIZE | PRESSURE | TYPE | |
EN | EN1092-1 | DN10-DN600 | PN16-PN100 | PL BL WN SO LAP SW TH |
ANSI | ANSI B16.5 | DN10-DN600 | 150LBS ~ 3000LBS | PL BL WN SO LAP SW TH |
ANSI B16.47 | DN10-DN600 | 150LBS ~ 3000LBS | PL BL WN SO LAP SW TH | |
JIS | JIS B2220 | DN10-DN600 | 5K-40K | PL,BL |
DIN | DIN 2573,2576 | DN10-DN600 | PN6 | SO |
DIN 2543,2544 | DN10-DN600 | PN16 | SO | |
DIN 2527 | DN10-DN600 | PN6-PN100 | BL | |
DIN 2541,2542 | DN10-DN600 | PN6,PN10 | LAP | |
DIN 2501,2502,2503 | DN10-DN600 | PN16,PN25,PN40 | SO | |
BS | BS 4504 | DN10-DN600 | PN10,PN40 | SO,BL |
BS10 TABLE - D / E / F | DN10-DN600 | - | SO, LAP | |
GOST | GOST 12820-80 | DN10-DN600 | PN6-PN25 | SO,BL |
GOST 12820-81 | DN10-DN600 | PN6-PN40 | WN | |
SABS | SABS 1123 | DN10-DN600 | PN6-PN25 | PL,SO,BL,WN |



Carbon Steel Flanges | ||
Material | Carbon steel | ASTM A105. ASTM A350 LF1. LF2, CL1/CL2, A234, S235JRG2, P245GH,Q235 |
P250GH, P280GHM 16MN, 20MN ,20# | ||
Stainless steel | ASTM A182, F304/304L, F316/316L | |
Alloy steel | ASTM A182 A182 F12,F11,F22,F5,F9,F91etc. | |
Standard | ANSI | Class 150 Flanges-Class 2500 Flanges |
DIN | 6Bar 10Bar 16Bar 25Bar 40Bar | |
JIS | 5K Flanges-20K Flanges | |
UNI | 6Bar 10Bar 16Bar 25Bar 40Bar | |
EN | 6Bar 10Bar 16Bar 25Bar 40Bar | |
GB | 6Bar10Bar16Bar25Bar40Bar | |
TYPE | 1.Welding neck Flange 2.Slip on | |
3.Blind flange 4.Long welding neck flange | ||
5.Lap joint flange 6.Socket welding | ||
7.Threaded flange 8.Flat flange | ||
Surface | Anti-rust oil, clear lacquer, Black lacquer, Yellow lacquer,hot-dipped Galvanized,electrical galvanized | |
Connection | Welding, Threaded | |
Technical | Forged, Casting | |
Size | DN10-DN3600 | |
Package | 1.>Standard export packaging (Plywood Case Of Outside,Plastic Cloth Of Inside). 2:As Customers' Requirements | |
Heat Treatment | Normalizing, Annealing, Quenching Tempering | |
Certificate | TUV,ISO9001:2008;PED97/23/EC,ISO14001:2004,OHSAS18001:2007 | |
Applications | Water works, Shipbuilding industry, Petrochemical & Gas industry, Power industry, Valve industry,and general pipes connecting projects etc. |
Why choose us
1. FACTORY DIRECT PRICE
2. NICE QUALITY, REFUND MONEY IN CASE OF BAD QUALITY
3. QUICK DELIVERY TIME WITH IN 15 DAYS
4. SMALL ORDER WELCOME EVEN 1 PCS
5. T/T, L/C, OA,WEST UNION,PAYPAL
6. CURRENCY: USD, RMB,EUR,JPY,HKD,GBP,CAD,AUD,SGD
7. SUPPORT 7 DAYS REFUND
8. ACCEPT TRADE ASSURANCE ORDER, YOUR MONEY IN SAFE
9. AFTER SALES SERVICE 24/7



Q: Why choose Shengao product?
A: We shengao have our own plant-- Weifang Shengao machinery Co., Ltd, therefore, we can surely
promise the quality of every product and provide you comparable price.
Q: Do you provide OEM Service?
A: Yes, we provide OEM Service.
Q: Do you provide customized flange?
A: Yes. Customers give us drawings and specifications, and we will manufacture accordingly.
Q: What is your payment term?
A: We provide kinds of payment terms such as L/C, T/T, Paypal, Escrow, etc.
If there's anything we can help, please feel free to contact with us.
Quality First, Price Best, Service Foremost!
We assure you of ourbest services at all times!