Home > Blind Flanges (BLRF)
Blind flanges (BLRF)are essential to piping systems and are recognized for their versatility and sealing capability. In contrast to other flanges, they feature a solid disc without holes, effectively halting the flow of water or air. Manufactured from materials like carbon steel, stainless steel, and alloys, blind flanges offer corrosion resistance along with mechanical strength. Commonly employed in sectors such as oil, gas, petrochemicals and power generation, they deliver dependable sealing and durability. The exact design of the blind flange guarantees a lasting and leak-proof seal, making it vital for numerous applications that demand safety and longevity.
Specifications :ASTM B462 / ASME SB462
Dimensions :ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard :ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size :1/2″NB TO 60″NB
Class / Pressure :150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type :Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
| Carbon Steel Blind Flange | ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80) |
|---|---|
| Stainless Steel Blind Flange | ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404, DIN 1.4308, DIN 1.4408, DIN 1.4306, DIN 1.4409 |
| Alloy Steel Blind Flange | ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91 |
| Titanium Blind Flange | ASTM B381 / ASME SB381, Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7 ASTM R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 |R56400/GR.5 |
| Copper Blind Flange | T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, etc |
| Copper Nickel Blind Flange | ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640 |
| Brass Blind Flange | 3602 / 2604 / h39 / H62 / etc. |
| Inconel Blind Flange | ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750 Flanges |
| Hastelloy Blind Flange | ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X Flanges |
| Monel Blind Flange | ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500) |
| Alloy 20 Blind Flange | ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3 |
| Aluminium Blind Flange | 5052 /6061/ 6063 / 2017 / 7075 / etc. |
| Nickel Blind Flange | ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC |
| Duplex Blind Flange | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Super Duplex Blind Flange | S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Incoloy Blind Flange | ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 Flanges |
| 254 Smo Blind Flange | ASTM A182 / ASME SA182, SMO 254/6Mo, UNS S31254, DIN 1.4547 |
| Nimonic Blind Flange | Nimonic 75, Nimonic 80A, Nimonic 90 |
| Other Blind Flange material | Tin bronze, Alumunum bronze, Lead bronze |
| Blind Raised Face Flange | Raised Faced Blind Flanges |
| ANSI B16.5 Blind Flanges | Blind Flange Dimensions |
| ASME B16.5 BLRF Flanges | ANSI B16.5 Class 150 Blind Flanges |
| Stainless Steel Blind Flanges Suppliers | SS Blind Flange |
| Blind Plate Flanges Dealer | ASME B16.47 Series A and B BLRF Flanges Exporter |
| ANSI B16.5 class 150 BLRF Flange Stockholder | ANSI 150 Blind Flange Distributors |
| Carbon Steel Blind Flange | High Quality BLRF Flanges Manufacturer |
| ASTM A182 Stainless Steel BLRF Flange | Duplex Steel Blind Flange |
| Super Duplex Steel Blind Forged Flange | Copper Nickel Blind Pipe Flanges |
| High Nickel Alloy BLRF Flanges | Hastelloy Flat Faced Blind Flanges Stockist |
| Titanium ASME B16.47 Series A and B BLRF Flanges | Inconel Blind Flanges |
At Koasteel, we take pride in being the largest supplier and manufacturer in the New Zealand, providing innovative solutions for all your piping requirements. With advanced production facilities strategically positioned in the New Zealand, we maintain an extensive inventory of more than 25,000 tons of top-quality materials kept ready in stock.
Reach out to us for a fast quote tailored to your requirement.
We provide these Blind Flanges (BLRF) in accordance with DIN, ISO, JIS or ANSI Standard.
Because Blind Flanges (BLRF) offer outstanding mechanical properties and withstand wear, corrosion, and high temperatures, they see broad use across many industries. You’ll find these flanges applied extensively in the oil and gas, petrochemical, power generation, and aerospace sectors. They serve a key role in connecting equipment, valves, and piping systems. Thanks to their remarkable strength, toughness, and wear resistance, they are ideal for uses subjected to harsh operating conditions, including high temperatures, high pressures, and corrosive environments.
Yes, blind flanges (BLRF) are reusable through recycling once they have served their purpose. Generally produced from recyclable materials like carbon steel, stainless steel, and alloy steels, they can be melted down and reused in fresh manufacturing processes, supporting sustainability initiatives and lessening environmental impact.
