ISO-K ISO-F Vacuum Sealing Flanges SS304 316L with Threaded & Bolted Holes
Product Description
These ISO standard vacuum flanges are manufactured from SS304 and 316L stainless steel, available in ISO-K and ISO-F types, designed specifically for high-performance vacuum sealing and pipeline connection. They are precision machined with bolted or tapped thread holes to ensure strong, stable assembly and reliable sealing in low, medium and high vacuum environments.
The smooth, passivated surface of 304 and 316L provides excellent corrosion resistance, anti‑oxidation and cleanability, making them widely used in vacuum systems, semiconductor equipment, laboratory instruments, coating machines, and vacuum pipeline accessories. The rigid structure and precise dimensional tolerance ensure zero leakage under dynamic and static vacuum conditions, effectively maintaining pressure stability.
ISO‑K and ISO‑F designs support quick installation and disassembly, while bolted and tapped configurations meet different connection and assembly requirements. Compared with ordinary flanges, these vacuum flanges feature higher airtightness, better structural strength, and longer service life under alternating pressure and temperature. Strictly produced under quality control, they are compatible with most vacuum systems and widely recognized in industrial and scientific vacuum applications.
| Size: |
3 inch |
Material: |
ASTM A182 F321 |
Standard: |
ANSI B16.5 |
| Place of Origin: |
Shanghai, China (Mainland) |
Model Number: |
DN20-500 |
Brand Name: |
TOBO |
| Standard or Nonstandard: |
Standard |
material: |
ASTM A182 F321 |
Type: |
WN flange |
Packaging & Delivery
| Packaging Details: |
In wooden case, pallet or as customers' requirement |
| Delivery Detail: |
14-30 days |
Product Description
| flangeType |
Stainless Steel Flanges ASTM A 182, GR F1, F11, F22, F5, F9, F9 WN SO BL JIN ECT |
| Standard |
ASME/ANSI B16.5 |
| Size |
1/2’’~60’’ |
| Pressure Rate |
150lb to 2500lb |
| Manufacturing process |
Push, Press, Forge, Cast, etc. |
| Material |
stainless steel |
| Carbon steel |
ASTM A 105 |
|
Allloy steel flange
|
ASTM A182 F5; F11;F22;F91;F51
ASTM A350 LF1; LF2; A350 LF3 ;LF4;LF6;LF8
|
|
Stainless Steel flange
|
ASTM A182 F304/304H/304L
ASTM A182 F316/316H/316L
ASTM A182 F321/321H
ASTM A182 F347/347H
|
|
Nickel Alloys Flanges
|
Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276 |
|
Copper Alloys Flange
|
Copper, Brass & Gunmetal |
| Manufacture 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 |
| Package |
Wooden cases, pallets, nylon bags or according to the customers' requirements |
| MOQ |
1pcs |
| Delivery time |
10-100 days depending on quantity |
| Payment terms |
T/T or Western Union or LC |
| Shipment |
FCA Tianjin/Shanghai, CFR, CIF, etc |
| Application |
Petroleum/Power/Chemical/Construction/Gas/Metallurgy/Shipbuilding etc |
| Remarks |
Other materials and drawings are available. |
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
Why choose us
1. If the quantity of order is not very big,we could send them to you by express delivery,
such as TNT,DHL,UPS OR EMS etc.
2. If order is big ,we will advise you use Air Shipping or Sea Shipping through your nominated forwarder agent.
Our long-term cooperated agent also available.
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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