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304/316L Stainless Steel Blind Flange – Precision-Machined, Corrosion-Resistant for Pipeline Closure & Maintenance
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304/316L Stainless Steel Blind Flange – Precision-Machined, Corrosion-Resistant for Pipeline Closure & Maintenance
| MOQ: | 100KGS |
| Price: | Negotation |
| Standard Packaging: | They are usually packed in conventional export wooden cases. |
| Delivery Period: | 2-10 work days |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Capacity: | 2000tons/per month |
Detail Information
Place of Origin
China
Brand Name
Yuhao
Certification
ISO, API, BV, CE ...
Model Number
Flanges
Material:
316, 316L, 304, 304L, Carbon
Application:
Connection, Decoration, Oil And Gas, Automative, Chemical, Water Treatment,
Flange Face Type:
RF (Raised Face)
Package:
Standard Seaworthy Packagel, Wooden Cases...
Connection:
Welding
Pressure:
PN6-PN500
Dimensions:
1/2”, 2”, 3”, 4”, 6”, 8”, Up To 24”
Place Of Origin:
Zhejiang
Highlight:
304 stainless steel blind flange
,316L corrosion-resistant pipeline flange
,precision-machined stainless steel flanges
Product Description
Stainless Steel Blind Flange
Product Overview
Stainless Steel Blind Flange is a precision-machined sealing component for industrial pipeline closure and isolation. Made from high-purity 304/316L stainless steel, its one-piece solid structure ensures excellent sealing tightness, corrosion resistance and long-term stability in complex industrial environments.
As a versatile end cap, it suits permanent closure and temporary isolation during maintenance, pressure testing or overhauls. Its precision-machined flat surface fits gaskets perfectly, preventing media leakage and external contamination.
Compliant with ANSI/ASME B16.5, DIN 2642 and EN 1092-1, our blind flanges cover various sizes, 150-2500 pressure classes and multiple surface treatments to adapt to different industrial media and conditions.
304 blind flanges are used in municipal water treatment, HVAC and light manufacturing. 316L variants, with molybdenum, resist chloride corrosion, suitable for chemical plants, marine equipment and oil & gas pipelines.
Each blind flange undergoes multi-step quality inspections (material purity, precision calibration, surface detection) to ensure pipeline compatibility and reliable sealing.
A core component in chemical, oil & gas, water treatment and manufacturing, it is trusted for reliability, easy installation and cost-effectiveness.
We offer standard and custom blind flanges, supported by professional technical consultation and competitive pricing, to provide tailored sealing solutions for your projects.
Product Specifications
| DN | Pipe OD | Connection Size | Flange Thickness (mm) | Flange ID | A | B | Flange OD | Bolt Hole Circle Diameter |
|---|---|---|---|---|---|---|---|---|
| 10 | 17.2 | 14 | 14 | 15 | 90 | 60 | 18 | 15 |
| 15 | 21.3 | 18 | 14 | 19 | 95 | 65 | 22.5 | 19 |
| 20 | 26.9 | 25 | 16 | 26 | 105 | 75 | 27.5 | 26 |
| 25 | 33.7 | 32 | 16 | 33 | 115 | 85 | 34.5 | 33 |
| 32 | 42.4 | 38 | 18 | 39 | 140 | 100 | 43.5 | 39 |
| 40 | 48.3 | 45 | 18 | 46 | 150 | 110 | 49.5 | 46 |
| 50 | 60.3 | 57 | 19 | 59 | 165 | 125 | 61.5 | 59 |
| 65 | 76.1 | 76 | 20 | 78 | 185 | 145 | 77.5 | 78 |
| 80 | 88.9 | 89 | 20 | 91 | 200 | 160 | 90.5 | 91 |
| 100 | 114.3 | 108 | 22 | 110 | 220 | 180 | 116 | 110 |
| 125 | 139.7 | 133 | 22 | 135 | 250 | 210 | 143.5 | 135 |
| 150 | 168.3 | 159 | 24 | 161 | 285 | 240 | 170.5 | 161 |
| 200 | 219.1 | 219 | 24 | 222 | 340 | 295 | 221.5 | 222 |
| 250 | 273 | 273 | 26 | 276 | 395 | 350 | 276.5 | 276 |
| 300 | 323.9 | 325 | 26 | 328 | 445 | 400 | 328 | 328 |
| 350 | 355.6 | 377 | 28 | 381 | 505 | 460 | 360 | 381 |
| 400 | 406.4 | 426 | 32 | 430 | 565 | 515 | 411 | 430 |
| 450 | 457 | 480 | 36 | 485 | 615 | 565 | 462 | 485 |
| 500 | 508 | 530 | 38 | 535 | 670 | 620 | 513.5 | 535 |
| 600 | 610 | 630 | 42 | 636 | 780 | 725 | 616.5 | 636 |
Product Images
Frequently Asked Questions
Q: What is your delivery time?
A: 1-7 days for small orders. 10-20 days for large orders.
Q: Are you a manufacturer or trading company?
A: We are both a manufacturer and trading company with over 12 years of export experience.
Q: What is your minimum order quantity?
A: The MOQ varies by product. Please refer to the specific product detail page or contact us with the product link for clarification.
Q: Do you provide samples? Are they free?
A: Yes, we offer samples free of charge, but customers are responsible for freight costs.
Q: How long is your production lead time?
A: Generally 5-10 days for in-stock items, or 15-20 days for out-of-stock items, depending on quantity.
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