Welding neck flange are distinguished from other types by their long tapered hub and gentle transition of thickness in the region of the butt weld joining them to the pipe. The long tapered hub provides an important reinforcement of the flange proper from the standpoint of strength and resistance to dishing.
The Welding Neck Flanges are normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welded flange of those currently avaliable because of its inherent structural value. It is expensive because of the design.
The industrial processes come into die forging,and machining,we can provide a wide range of flanges,following on standards like ASME B16.5 Flange , ASME B16.47 Flange, DIN 2573 Slip On Flange, DIN 2631 Welding Neck flange, JIS Flange 5K SOP Flange and JIS Flange 10K SOH Flange.
ASME Flange include ASME B16.5 Flange, ASME B16.47-A Flange, ASME B16.47-B Flange, this standard system include slip on flange, blind flange, welded neck flange, Threaded Flange, lapped joint flange (loose flange), socket welded flange, B16.36 Orifice Flange, long Weld Neck Flange and Special Flange, sizes from 1/2 inch to 60 inch, class 150, class 300, class 600, class 900, class 1500, class 2500.
About Our Company:
We started doing flange business since 1997, with new factory established in 2002 in Dingxiang-town of flange. With 280 professional workers, 40,000 square meters, the annual production capacity is 12,000, 000 ton. Our products have been exported toSouth Korea,Japan,Italy,Turkey,Germany,America,Denmark…, and got good reputation for good quality, fair price and reliable after-service.
About Certificates:
We’ve obtained certificate ISO9001, TUV/PED, API...
About Production:
| Forged Flange |
| Size | 1/2"-72" |
| Type | Welding Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, Orifice Flange, Long welding neck, Spectacle Blind… |
| Standard | ANSI/ASME, MSS, API, AWWA, EN1092-1, DIN, JIS, AS, BS. KS… |
| Class/rate | ANSI 150LBS-2500LBS, |
| DIN PN6-PN40 |
| JIS 5K-30K |
| Materials | Carbon Steel | ASTM SA/A105(N), C22.8, ST37.2, A516GR60/70… |
| Low Temperature Carbon Steel: ASTM SA350 LF2 |
| High Strength Steel: ASTM SA694 F42/46/52/56/60/65 |
| Stainless Steel | ASTM A182 F304/304L/316/316L |
| Alloy Steel | ASTM A182 F1/F5/F9/F11/F22/F91… |
| Duplex stainless steel | ASTM A182 F51/F53/F55/F60 |
| Surface Treatment | Yellow/black coating, anti-rust oil |
| Packing | Plywood case/pallet |
| Delivery | Usually within one month after receiving the formal order . |
| Inspection | Factory in-house or Third Party inspection available upon your requests. |
| Non-standard Forgings |
| We can also manufacture non-standard flanges and forgings according to clients’ request and drawings. |
About facility and workshop
Raw material, cutting and forging(ring roller, screw press machining)
Heat treatment and CNC Machining
Painting, inspection, packing and shipping
We’re ready to help you with all these products, contact us now to get your order started!
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