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UHP & Hi-Vacuum Fittings

 

Ultra High-Purity (UHP) and High-Vacuum Fittings for

Semiconductors and LCD Applications

CREST VK is precision-engineered and manufactured as welded-as-seam-less (WSL) or seamless according to ASTM A213 or A269/A270 or JIS G3459 with the specific purpose of servicing ultra high-purity applications and high-vacuum components for semiconductor and related industries such as LCD, LED, OLED, poly-silicon and solar cells.

Dimension
OD [inch/mm] WT [inch/mm]
1/4″(6.35) 0.035″(0.89)
3/8″(9.53) 0.035″(0.89)
1/2″(12.7) 0.049″(1.24)
3/4″(19.05) 0.065″(1.65)
1″(25.4) 0.065″(1.65)
1.5″(38.1) 0.065″(1.65)
2″(50.8) 0.065″(1.65)
2.5″(63.5) 0.065″(1.65)
3″(76.2) 0.065″(1.65)
4″(101.6) 0.083″(2.11)
6″(152.4) 0.109″(2.77)
40A (48.6) 1.65
50A (60.5) 1.65
65A (72.3) 2.10
80A (89.1) 2.10
100A (114.3) 2.10
150A (165.2) 2.80
200A (216.3) 2.80
250A (267.4) 3.40
300A (318.5) 4.00
400A (406.4) 4.50
Code (Finish) Specifications Pre-Materials Surface Finish (max)
SF0
BA
A269/A270 304L
316L
ID < 40 RA < 1.0 μm
OD < 40 RA < 1.0 μm
SF0
BAP
A269/A270 304L
316L
ID < 40 RA < 1.0 μm
OD < 32 RA < 0.8 μm
SF1
MP
A269/A270 304L
316L
ID < 15 RA < 0.4 μm
OD < 32 RA < 0.8 μm
SF4
EP
A269/A270 304L
316L
ID < 10 RA < 0.25 μm
OD < 32 RA < 0.8 μm

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