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High-Vacuum Applications

Precision-Cleaned High-Vacuum Products for

Semiconductor and LCD Applications

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

High-Vacuum Tube

Dimension
OD [inch/mm] WT [inch/mm]
1/2″(12.7) 0.049″(1.24)
1/2″(12.7) 0.065″(1.65)
3/4″(19.05) 0.049″(1.24)
1″(25.4) 0.049″(1.24)
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) 0.065″(1.65)
4″(101.6) 0.083″(2.11)
6″(152.4) 0.083″(2.11)
6″(152.4) 0.109″(2.77)
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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