Donghao Metal  has been served the sanitary, dairy, food and beverage field since 2010.

After electropolished to meet Ultra high purity or chemically cleaning, Thermocouple Cleaning.
Our tubing can be used for Pharmaceutical, Semiconductor, Biotechnology, Aerospace and others.
We always focus on production improvement to meet client's request.

Size Range
O.D : 0.375" -- 2.0"
W.T : 0.028" - 0.145"

Available Material

Elements	304L	316L	316L-S2
( C ) Carbon - max	0.03	0.03	0.03
(Mn) Manganese-max	2.00	2.00	2.00
(P) Phosphorus-max	0.045	0.045	0.045
(S) Sulphur	0.03	0.03	0.005-0.017
(Si) Silicon-max	0.75	0.75	0.75
(Ni) Nickel	8.0-12.0	10.0-14.0	10.0-14.0
(Cr) Chromium	18.0-20.0	16.0-18.0	16.0-18.0
(Mo) Molybdenum	N/A	2.0-3.0	2.0-3.0

Quality Tests
ASTM A270/A1016, DIN11850/DIN2463
(Flaring,Flattening,Flange,Bending)
ASME/ANSI B46.1
Surface Roughness
Eddy Current / Hardness / Dimensional / Metallurgical

Features
O.D : Mechanical Polish ( 32 Ra )
I.D   : Mechanical Polish ( 20Ra  )
Hydrogen Bright Annealed : 25Ra I.D
EP: 20 μ-in Ra (0.5 μm) ID, 30 μ-in Ra (0.8 μm) OD

Packings
All material is end capped and vacuum poly sleeved.
Tubes are packaged in plywood case / wood case.
Flumigation Wood Case upon customers' request.