4 Inch DN150 A182 F91 Alloy Steel Blind Flange ASME B16.5 Standard
This blind flange is a premium industrial pipeline fitting, strictly manufactured in accordance with ASME B16.5 standard, made of high-performance A182 F91 alloy steel, with specifications of DN150 and 4 inches. It is specially designed to seal the end of pipelines, effectively preventing fluid leakage and ensuring the safe, stable operation of industrial pipeline systems.
A182 F91 alloy steel is a high-chromium-molybdenum alloy steel, featuring excellent high-temperature strength, creep resistance and corrosion resistance, which can withstand long-term operation under high temperature and high pressure conditions—ideal for harsh industrial environments. The blind flange is processed by precision forging and machining, with a smooth sealing surface, precise dimensional accuracy and compact structure, ensuring tight fit with pipeline ends and reliable sealing performance. It is easy to install and disassemble, facilitating pipeline maintenance, inspection and later modification.
Widely applied in petroleum refining, chemical industry, power plants, boilers, heat exchangers and other high-temperature, high-pressure pipeline systems, suitable for both temporary and permanent pipeline end sealing. Strict quality inspection (including material composition analysis, pressure testing, dimensional detection and surface quality inspection) ensures full compliance with ASME B16.5 standards and international industrial requirements. With outstanding durability, good interchangeability and stable performance, it provides a cost-effective and reliable sealing solution for industrial pipeline projects.
Product Details:
| Place of Origin: |
China |
| Brand Name: |
TOBO |
| Certification: |
ISO/PED/TUV/SGS/LR/BV |
| Model Number: |
Duplex Steel |
Payment & Shipping Terms:
| Minimum Order Quantity: |
500KG |
| Price: |
USD Depending on quantity |
| Packaging Details: |
Wooden case |
| Delivery Time: |
10-100days |
| Payment Terms: |
L/C, T/T, Western Union |
Product Range:
WNRF Flanges Size : 1/8" NB TO 48"NB.
WNRF Flanges Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.
Stainless Steel WNRF Flanges: ASTM A 182, A 240
Grade : F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750
Carbon Steel WNRF Flanges: ASTM A 105, ASTM A 181
Alloy Steel WNRF Flanges : ASTM A 182, GR F1, F11, F22, F5, F9, F91
Nickel Alloys WNRF Flanges : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276
Copper Alloys WNRF Flanges: Copper, Brass & Gunmetal
WNRF Flanges Standard
ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S : BS4504 , BS4504, BS1560, BS10
Value Added Services
Hot Dip Galvanizing , Epoxy Coating.
Test Certificate
Manufacturer Test Certificate as per EN 10204 / 3.1B
FAQ.
Q: Are you trading company or manufacturer ?
A: We are manufacturer ,You can see the certification.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
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