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EP Welded Pipe for Bulk Gas Delivery

Ultra High-Purity (UHP) EP Pipe for

Semiconductors and Flat Panel Displays

CREST UHP Welded Pipe Product

    • selected the finest pre-materials suitable for ultra high-purity applications
    • stainless steel welded pipe specifications of ASTM A269/A270
    • stainless steel welded pipe specifications of JIS G3459
    • servicing semiconductors and microelectronics
    • servicing ultra high purity gas delivery system
    • the corrosion-resistant solution to special gases used within wafer fab equipment gas systems
Dimension
OD [inch/mm] WT [inch/mm]
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
Finish Code
Product Code
Specifications
ASTM/JIS
Choice of
Pre-Materials
Surface Roughness (Max)
EP
UHP-118
A269/A270
A312
JIS G3459
316L
SUS316L
ID < 10 RA < 0.25 μm
OD < 32 RA < 0.8 μm
BA
UHP-112
A269/A270
A312
JIS G3459
316L
SUS316L
ID < 15 RA < 0.38 μm
OD < 32 RA < 0.8 μm
AP
UHP-110
A269/A270
A312
JIS G3459
304L
316L
SUS316L
ID Bead
Removed
Bright Annealed
OD < 32 RA < 0.8 μm