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UHP Welded Products | EP BA MP AP

Ultra High-Purity (UHP) Tubing and Pipe for

Semiconductors and LCD Display Devices

CREST HPW is precision-engineered and manufactured welded-as-seam-less (WSL) according to stainless steel tubing and pipe specifications of ASTM A269/A270 and/or JIS G3459 with the specific purpose of servicing ultra high-purity applications in the area of semiconductor, LCD display device and poly-silicon industries.

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
Code Specifications Choice of Pre-Materials Surface Finish (max)
AP A213/A269
A269/A270
A312
JIS G3459
304L
316L
SUS316L (JIS)
316L (sulfur 0.005%~0.017%)
ID Weld Bead Removed Bright Annealed
OD < 32 RA < 0.8 μm
MP A213/A269
A269/A270
A312
JIS G3459
304L
316L
SUS316L (JIS)
316L (sulfur 0.005%~0.017%)
ID < 20 RA < 0.5 μm
OD < 32 RA < 0.8 μm
BA A213/A269
A269/A270
A312
JIS G3459
304L
316L
SUS316L (JIS)
316L (sulfur 0.005%~0.017%)
ID < 15 RA < 0.4 μm
OD < 32 RA < 0.8 μm
EP A213/A269
A269/A270
A312
JIS G3459
304L
316L
SUS316L (JIS)
316L (sulfur 0.005%~0.017%)
ID < 10 RA < 0.25 μm
OD < 32 RA < 0.8 μm

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