Blind Flange (BL) Carbon Steel Forged Flange

**Product Details** - **Model No.:** Blind Flange - **Manufacturing Method:** Forging - **Application:** Used for sealing or connecting pipe/tube lines - **Trademark:** Lockheed - **Transport Packaging:** Pallets - **Specification:** DIN/ANSI - **Origin:** China - **HS Code:** 7307210000 **Flange Types and Specifications** - **Welding Neck Flange** - Ideal for high-pressure, low-temperature, or high-temperature environments. - The hub is tapered and bored to match the pipe’s internal diameter, ensuring smooth flow and reducing turbulence and erosion. - Easy to radiograph and offers excellent stress distribution. - **Slip-On Flange** - Not typically used in high-stress applications due to a smaller hub and weld joint. - Slides over the outside of the pipe. - The inside of the flange is welded at the hub and the end of the pipe. - **Lap Joint Flange** - Used when bolt alignment or cleaning access is required. - Similar to slip-on flanges when paired with a lap joint stub end. - Has a radius at the intersection of the flange face and bore to match the stub end. - **Threaded Flange** - Used where welding could be hazardous. - Designed for low-pressure and non-cyclic applications. - The bore is threaded to match the pipe thread. - Tapered to seal the pipe and flange. - **Socket Weld Flange** - Suitable for small-diameter chemical, hydraulic, and steam distribution systems. - Similar to slip-on flanges. - The counterbore matches the pipe bore, allowing unrestricted flow. - The counterbore from the hub side fits the pipe’s outer diameter, enabling insertion with a fillet weld at the hub. - **Blind Flange** - Used to close the ends of piping. - Has no bore. - Allows access to sealed lines. - **Other Flanges:** Orifice, Expander, Reducing, Lightweight, Studding Outlets, Long Weld Necks, Metric, Navy Drawings, Customer Drawings. **Material & Standards** Ningbo HAGA Metal Products Co., Ltd. specializes in manufacturing flanges made from materials such as: - **Stainless Steel:** 304, 304L, 316, 316L - **Carbon Steel** Our flanges comply with international standards including: - **ANSI, BS, DIN, EN1092-1, JIS** **ANSI Flanges** - **Dimensions:** ANSI B16.5, B14.47, B16.36, B16.48 - **Material Specifications:** ASTM A182, A351, DIN, ASTM A105, A216 WCB - **Material Grades:** F305, F304L, F316, F316L, CF8, CF8M, CF3M - **DIN Grades:** 1.4301, 1.4306, 1.4401, 1.4404, 1.4308, 1.4408, 1.4306, 1.4409, 1.0402, 1.0460, 1.0619 - **Class:** 150, 300, 400, 600, 900, 1500, 2500 - **Flange Types:** Weld Neck, Threaded, Slip-on, Lap Joint, Socket Weld, Blind **BS Flanges** - **Dimension:** BS4504 - **PN Ratings:** 2.4, 6, 10, 16, 25, 40 - **Flange Types:** Weld Neck, Threaded, Slip-on, Lap Joint, Socket Weld, Blind **DIN Flanges** - **Description:** Includes Blind Flanges (DIN2527, 6–100 bar), Slip-on Flanges (DIN2573, 2503), Welding Neck Flanges (DIN2630–2638), Lapped Joint Flanges (DIN2641–2642), and many more. **EN1092-1 Flanges** - **Types:** Slip-on, Loose Plate, Blind, Welding Neck, Hubbed Slip-on, Threaded, Integral, Weld-on Collars, Lapped Pipe Ends, Weld-Neck Collars. - **Pressure Ratings:** 6/10/16/25/40/63/100 Bar **JIS Flanges** - **Pressure Ratings:** 2/5/10/16/20/30/40/63 kg/cm² **Contact Us** For detailed catalogues or custom requirements, feel free to reach out. We are here to help! **Product Images** ![Blind Flange (BL) Carbon Steel Forged Flange](http://i.bosscdn.com/uploads/10/5f/e4/ab3982b71ef6d143fa39a31dff.jpg) ![Blind Flange (BL) Carbon Steel Forged Flange](http://i.bosscdn.com/uploads/1f/df/04/4a1b5e20042b6569892f041332.jpg) ![Blind Flange (BL) Carbon Steel Forged Flange](http://i.bosscdn.com/uploads/db/9d/b5/2e7e1c39e6b03b57bae5b8691a.jpg)

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