Longteng Special Steel Group
| Payment Terms | L/C, T/T, |
| Supply Ability | 100,000 TONS PER YEAR |
| Delivery Time | 20-30 WORKING DAYS |
| Packaging Details | Fumigate-free wooden box |
| Material | A105/C22.8/Q235/Q355B / P250GH |
| Standard | ANSI, GB/T, bs, DIN, GB, ISO, JIS, ASME, TUV |
| Production process | Forging, heat treatment |
| Tolerance | Min. 0.01mm |
| Hardness | HRC, HB, HV |
| Roughness | Min. Ra0.4 |
| Marking | Laser |
| UT standard | ASME or EN |
| Brand Name | Longteng |
| Model Number | Forged WN Welded Neck Flanges |
| Certification | GB/ T 19001-2016/ISO9001:2015/C |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T, | Supply Ability | 100,000 TONS PER YEAR |
| Delivery Time | 20-30 WORKING DAYS | Packaging Details | Fumigate-free wooden box |
| Material | A105/C22.8/Q235/Q355B / P250GH | Standard | ANSI, GB/T, bs, DIN, GB, ISO, JIS, ASME, TUV |
| Production process | Forging, heat treatment | Tolerance | Min. 0.01mm |
| Hardness | HRC, HB, HV | Roughness | Min. Ra0.4 |
| Marking | Laser | UT standard | ASME or EN |
| Brand Name | Longteng | Model Number | Forged WN Welded Neck Flanges |
| Certification | GB/ T 19001-2016/ISO9001:2015/C | Place of Origin | China |
Description
Weld neck flanges are the most popular flange type with a neck extension with a weld bevel at the end. This type of flange is designed to butt weld directly to pipe to provide a superior and relatively natural form connection. In larger sizes and higher pressure classes, this is almost exclusively the type of flange connection utilized. If only one bored flange style existed in modern applications, the weld neck would be your flange of choice.
The weld bevel joins to a pipe end with a similar bevel in a V-type connection which allows for a uniform circular weld around the perimeter to form a unified transition. This allows for the gas or liquid within the pipe assembly to flow with minimal restriction through the flange connection. This weld bevel connection is inspected after the weld procedure to ensure that the seal is uniform and lacking anomalies.
Product Parameter
| Standard: | ANSI B16.5,HG/T 20592, HG/T20615-2009, EN1092-1, DIN2502 DIN2527 DIN2566 DIN2573 DIN2576 DIN2632 DIN2633, GOST,etc. |
| Material: | A105/C22.8/Q235/Q355B / P250GH 304/304L,316/316L,321,ect. |
| Types: | welding neck, socket welding, threaded, blind, slip on, lap joint, plate |
| Size: | NPS 1/2" to 24"/DN15-600 |
| Pressure Rating: | Class 150-Class 2500 (150#, 300#, 600#,900#,1500#, 2500#),PN6-PN16 |
| Facing: | RF/FF/RTJ |
| Surface treatment: | Antirust Oil,Black Paint,Yellow paint,Galvanized |
| Certification: | ISO9001:2015/C |
Company Details
Business Type:
Manufacturer,Importer,Exporter
Year Established:
1993
Employee Number:
6000~6500
Ecer Certification：
Site Member
Longteng Special Steel Group is a well-known private enterprise in China's special steel industry. Founded in 1993, it is a deep processing enterprise of metal products integrating sintering, ironmaking, steelmaking, refining, continuous casting, rolling and metal product processing. It has an a... Longteng Special Steel Group is a well-known private enterprise in China's special steel industry. Founded in 1993, it is a deep processing enterprise of metal products integrating sintering, ironmaking, steelmaking, refining, continuous casting, rolling and metal product processing. It has an a...
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