Flanges Features:
1. Flanges Types: Welding Neck Flange(WN Flange), other type we provide: Integral pipe

flange, steel pipe flange, threaded flange, slip-on flange (SO), slip-on welding flange,

socket welding flange, lap joint flange (LJF), welding neck flange (WNF), blind flange,

orifice flange, reducing flange, pad type flange, loose hubbed flange, welding plate flange,

etc.
2. Flange Size: 1/2"-80" DN15-DN3000
3. Flange Pressure Rateing: PN1.0, PN2.0(class150), PN5.0(class 300), PN6.8(class 400),

PN10.0(class 600), PN15.0 (class 900), PN25.0(class 1500), PN42.0(class 2500)
4. Flange Facing: Raised face, flat face, ring type joint, lap-joint face, male- female,

tongue & groove
5. Flange Materialls: ASTM A234 WPB, WPC, A105 N, A350, A403 WP304, 304L, 316, 316L, 310,

etc.
6. Flange Executive Standards: ANSI/ASME B16.5, DIN, JIS, GB, ASTM, JB, API
7. Tee Surface Treatment: Polishing, Pickling, Antiseptic, Abrasive blasting, HDG, Black

painting, Anti-rust varnish, Anti-rust oil, 3PE coating, Epoxy coating.
8. Tee Applications: Petroleum, chemicals, water conservancy, electric power, boiler,

machinery, gas, construction, heating, metallurgy and shipbuilding.
Service We Provide:
1. Certificate: API 6H Certificate, ISO9001: 2000, ISO14001-2004, OHSAS18001: 1999, China

Classification Society(CCS) Certificate, etc.
2. Inspection: The Third Party Inspection is available here, also we provide the Material

Test, Material Mill Certificate
Our Material Tests: Chemical composition analysis, Mechanical Properties test, Eddy current,

hydrostatic, Ultrasonic, Intergranular Corrosion or according to customers' request.
3. Marking: The usual marking is our DF monogram, and we welcome our customer's requesting

mark and logo.
4. Samples: For small size, the sample is available free, but the customer must bear the

express fee.
5. Delivery time: The usual delivery time is 15-30 days, we promise that try our best to

shorten the delivery time for the customer who is emergency to goods.

With the high quality products and services, we hope to establish a long and firm business

relation with every sincere customer!

1) Standard: ANSI B16.5, ANSI B16.47,
DIN2573, 2572, 2631, 2576, 2632, 2633, 2543, 2634, 2545,
JIS
BS4504
EN1092
GB/T9113 - GB9124, HG20592-20605-97, HG20615-20626-97, SH3406-96, JB/T81-86-94, JB4700-4707

-92, JB4721-92
Also producing the flanges acc. To customers' special requirement
2) Material: 304/1.4301, 304L/1.4306/1.4307, 321/1.4541, 316Ti/1.4571, 316L/1.4404,
A105N, RST37.2, F2, F5, F9, F11, F22, and different types of duplex
3) Size: 1/2'' - 60''
4) Pressure Rating Class: ANSI 150LBS ~ 2500LBS
DIN PN6 ~ PN160
JIS 5K ~ 30K
5) Packing: As per customers' requests
6) Trademark: DF
7) Payment: T/T or L/C