Sự miêu tả
Corrosion-resistant forged piping component
ASTM A182 F316L Weld Neck Flange
A low-carbon, molybdenum-bearing stainless steel weld neck flange engineered for full-penetration butt-welded joints in chemical, hàng hải, energy and hygienic process piping.
What is an F316L weld neck flange?
MỘT ASTM A182 Mặt bích cổ hàn F316L is a forged austenitic stainless steel pipe flange with a tapered hub and a butt-weld end. The hub transfers stress gradually from the flange into the pipe, while the full-penetration weld provides a strong, inspectable joint for pressure and temperature cycling.
F316L is the low-carbon version of F316. Its maximum carbon content helps reduce the risk of sensitization during welding, while chromium, nickel and molybdenum provide better resistance to pitting and crevice corrosion than 304-series stainless steel in many process environments.
F316L weld neck flange specifications
| Sản phẩm | Forged weld neck flange / mặt bích WN / WNRF or WNRTJ |
|---|---|
| vật liệu ASTM | ASTM A182 F316L |
| Ký hiệu vật liệu | UNS S31603; thường được tham chiếu chéo với EN 1.4404 / X2CrNiMo17-12-2 |
| North American standard | ASME B16.5 |
| European option | EN 1092-1 Kiểu 11, supplied to the ordered material and project specification |
| Kích thước danh nghĩa | ASME: NPS 1/2–24; EN: DN15–DN600; larger project sizes available subject to drawing review |
| Đánh giá áp suất | Lớp ASME 150, 300, 400, 600, 900, 1500 Và 2500 within the size limits of the standard; EN PN6–PN100 |
| Đối mặt | Mặt nâng lên (RF), Loại vòng chung (RTJ), Mặt phẳng (FF) or project-specific finish |
| Khoan / lịch treo tường | Machined to match the specified pipe OD and wall schedule, including Sch 10S, 40S, 80S and heavier walls |
| Hồ sơ kiểm tra | EN 10204 3.1 giấy chứng nhận vật chất, báo cáo chiều, PMI report and additional testing as ordered |
Kích thước cuối cùng, pressure-temperature rating and material acceptance criteria follow the ordered standard, edition and project specification.
ASME B16.5 và VN 1092-1 supply options
For North American projects
Chỉ định ASTM A182 F316L, ASME B16.5 quy mô và lớp, lịch trình đường ống, kiểu đối mặt, surface finish and required inspection. Typical descriptions include “2 in Class 300 WNRF, bore for Sch 40S.”
Đối với các dự án châu Âu
Chỉ định EN 1092-1 Kiểu 11, DN and PN rating, mặt niêm phong, pipe dimensions and the required European material designation, thông thường 1.4404 for 316L applications.
F316L vs F316 weld neck flange
| Điểm lựa chọn | F316L | F316 |
|---|---|---|
| Carbon limit | Lower carbon, 0.030% maximum | Higher permitted carbon limit |
| Primary benefit | Reduced sensitization risk during welding | May provide slightly higher strength in some conditions |
| Typical choice | Welded process piping and corrosive service | Service selected by the governing design and material specification |
Ứng dụng điển hình
| Ngành công nghiệp | Dịch vụ điển hình | Why F316L is selected |
|---|---|---|
| Xử lý hóa chất | Process lines, hệ dung môi, kết nối lò phản ứng | Corrosion resistance and reliable welded joints |
| Dầu, gas and refining | Utility piping, trượt, selected corrosive streams | Sức mạnh, traceability and pressure-class availability |
| Marine and water treatment | Treatment equipment, desalination auxiliaries, pump connections | Better chloride resistance than 304-series grades for suitable design conditions |
| Food and pharmaceutical | Clean utilities and process equipment connections | Cleanable stainless surface and low-carbon weldability |
| Power and industrial plants | Cooling water, auxiliaries and process utility lines | Tapered-hub stress distribution and long service life |
Chế tạo, kiểm tra và tài liệu
SASA FLANGE supplies F316L weld neck flanges with identification linked to the raw-material heat number. The production route can include forging, giải pháp xử lý nhiệt, gia công CNC, đối mặt, khoan, dọn dẹp, final inspection and export packing according to the purchase order.
Đánh giá MTC, heat-number control and PMI when specified.
CỦA, độ dày, trung tâm, khoan, vòng tròn bu lông, holes and facing.
PT, UT, hardness or third-party inspection as ordered.
EN 10204 3.1 certificate and inspection records per PO.
Information required for a fast quotation
- Tiêu chuẩn và phiên bản
- Lớp vật liệu
- Kích thước danh nghĩa / DN
- Class or PN rating
- lịch trình ống / khoan
- Facing and surface finish
- Số lượng
- Inspection and certification
Câu hỏi thường gặp
What is the material designation for an F316L weld neck flange?
The ASTM designation is ASTM A182 F316L and the UNS number is S31603. EN 1.4404 is commonly used for comparable European 316L applications, but the ordered standard and acceptance criteria should always be stated explicitly.
Which ASME sizes and pressure classes are available?
ASME B16.5 covers weld neck flanges from NPS 1/2 thông qua NPS 24. Common ratings are Class 150, 300, 400, 600, 900 Và 1500; Lớp học 2500 applies within the smaller size range defined by the standard.
Can the flange bore match a specific pipe schedule?
Đúng. The weld end and bore can be machined to match the ordered pipe outside diameter and wall schedule. Include the pipe specification and schedule in the RFQ to ensure correct weld preparation and alignment.
What is the difference between RF and RTJ facing?
A raised face uses a flat gasket contact area above the flange face. An RTJ flange has a precision-machined groove for a metallic ring gasket and is commonly specified for more severe pressure and temperature service. Mặt bích giao phối, gasket and facing must be compatible.
Which certificates can be supplied?
Tài liệu điển hình bao gồm một EN 10204 3.1 giấy chứng nhận vật chất, heat-number traceability and dimensional inspection report. PMI, PT, UT, hardness testing and third-party inspection can be arranged when included in the order requirements.
Request an F316L weld neck flange quotation
Gửi kích thước của bạn, class or PN rating, lịch trình đường ống, đối mặt, quantity and documentation requirements. SASA FLANGE will review the specification and return a project-specific quotation.
