PMI Tested A182 F316 ODM Vacuum/Conflat Flange

• Standard: ANSI, DIN, GB, JIS, GOST
• Type: Welding Flange
• Material: Carbon Steel
• Structure: Round
• Connection: Welding
• Sealing Surface: RF
• Manufacturing Way: Forging
• Flange: Forged
• Size: 1/2"-60"(DN15-DN1500)
• Rating: 150lbs~2500lbs
• Quality Control: PMI Tested/Dimension/Visual
• Mtc: En10204 3.1 or 3.2 on Request
• Transport Package: in Wooden Box or Pallet
• Specification: ASTM/ANSI/GB/HG
• Trademark: kingmetal
• Origin: China
• HS Code: 73072100
• Production Capacity: 50000

Product Description

PMI Tested A182 F316 ODM Vacuum/Conflat Flange

The CF flange (originally called ConFlat) is a sexless design where both flanges are identical. Typical flange materials are austenitic stainless steel types 304L, 316L, 316LN, and surface hardened aluminum (made from a weldable Al alloy). The seal mechanism is a knife-edge that is machined below the flange's flat surface. As the bolts of a flange-pair are tightened, the knife-edges make annular grooves on each side of a soft metal gasket. The extruded metal fills all the machining marks and surface defects in the flange, yielding a leak-tight seal (Figure 1). The CF seal operates from 760 Torr (1013 mbar) to < 1 x 10^-13 Torr (<1.3 x 10^-13 mbar), and within the temperature range -196° C to 450° C (depending on material). Flange sizes in North America (NA) are determined by outside diameter (O.D.). However, in Europe and much of Asia (E/A), the nominal internal diameter (nominal I.D.) of the largest tube that can be welded to a bored flange is usually referenced in their nomenclature.

The NA sizes are: 11/3" ("mini"), 23/4", 41/2", 6", 8", 10", 12", 131/4", 14" and 161/2" O.D.. The E/A sizes are digits (representing the nominal bore in mm) prefixed with either DN or NW (depending on manufacturer): DN16, DN40, DN63, DN100, DN160, DN200, and DN250. In addition, the NA system has intermediate O.D. sizes to enable the use of "standard" inch dimension tubes. They are 21/8" (1" diameter

tube), 33/8" (2"), 45/8" (3"), 63/4" (5"). For other dimensions, see the ordering tables on this site.

CF flanges (with identical O.D.s up to 10" inclusive) from different (reputable) manufacturers will almost certainly seal.

The vacuum equipment industry adheres to the de-facto ConFlat standard.

ConFlat flanges are offered in four versions:

• Fixed flange (Figure 2): is a one piece design where the bolt-hole orientation is fixed with respect to that fitting.
• Rotatable flange (Figure 3): is comprised of two parts, an inner weld ring and outer bolt ring. This enables the bolt ring to rotate about the inner weld ring.

Both Fixed and Rotatable flanges are available with your choice of clearance-holes or tapped holes.

• Clearance-holes: Are through-holes that allow adequate clearance for bolts to go through both flanges and secured by nuts or plate nuts.
• Tapped holes: Are imperial or metric threaded holes machined through the flange. This allows a clearance-hole flange to be connected without the need for nuts or plate nuts. Be aware of a components bolt hole orientation when selecting tapped flanges

 Company Profile
From 1989 to now, Kingmetal Steel focus on manufacturing and distributing pipeline products including piping, fitting, flange, valve and fastener in stainless, carbon, alloy and duplex steel.
Kingmetal has a factory to manufacture seamless stainless steel pipe from DN6 to DN600 and distribute seamless steel pipe and fitting from top brand manufacturers such as Baosteel, Hengsteel, Tiansteel and Pansteel etc.
All of products are strictly compliance with standard, 100% inspection passed including visual, dimension and PMI test before shipment.
Both our sales and logistic teams are over 10 years of experiences and training frequently.
After- sales service with high efficiency, if any products are short quantity/weight or damaged caused by manufacturing, design or transportation can be compensated.
Why choose us?
One-Stop Solution
We have thousands of total production experience, from raw materials to finished products.
Competitive Price
Large scale purchase, standardized production process and efficient management make our price competitive.
Quick Shipping
Years of export experience enable us to control the transportation time more accurately.
Quality Control
The standardized production process, comprehensive management system, professional testing equipment
Special material customization
We support the customization of various complex materials
OEM/ODM
We support any form of OEM/ODM customization requirements.