Dissolved oxygen refers to oxygen molecules dissolved in water. It is one of the gases necessary for the survival and breathing of organisms in water bodies. The concentration of dissolved oxygen in water can affect the growth and health of aquatic organisms. The online dissolved oxygen analyzer can realize real-time continuous monitoring of the dissolved oxygen value of water quality.
Daruifuno's DUC2-DO dissolved oxygen analyzer is equipped with an optical dissolved oxygen sensor. The fluorescence method does not consume oxygen, does not require electrolyte, has a fast response and is convenient for measurement.
Dissolved Oxygen Analyzer,Online Dissolved Oxygen Meter,Dissolved Oxygen Probe,Water Oxygen Sensor Suzhou Delfino Environmental Technology Co., Ltd. , https://www.daruifuno.com
Size of steel pipe
Namesteel pipe
steel pipe Size:
OD:1/2-10'Â Â Â (20mm-273mm)
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Wall Thickness:2-10mm
SCH30,SCH40,STD,XS,SCH80,SCH160
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Length:5.8--12M
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Steel pipe material
Q195 → Grade B, SS330,SPHC, S185
Q215 → Grade C,CS Type B,SS330, SPHC
Q235→GradeD,SS400,S235JR,S235JO,S235J2, ST33,A53,
steel pipe Standard
 BS EN10296,BS EN10025,BS EN10297,BS6323, BSEN10219,BS EN10217, BS 1387-1985Â
DIN 1026, DIN 1629/3
GB/T13793-1992,GB/T14291-2006,GB/T3091-2001,GB/T3092-12001,GB3640-88
steel pipe Usage
Used For Structure, Accessorize And Construction
steel pipe ends
1)Â Plain
2)Â Beveled
3) Thread with Coupling or cap
steel pipe end protector
1) Plastic pipe cap
2) Iron protector
steel pipe technique
Electronic Resistance Welded (ERW )
Type
steel pipe
steel pipe delivery
1)Â Â Â Â Container
2)    Bulk carrier
steel pipe
Payment
L/C, T/T, Western Union
size of steel pipe
Out diameter
(mm)
Wall thickness
(mm)
Length
(mm)
48.32.5
6/9/12
48.3
2.75
6/9/12
48.3
3.0
6/9/12
Â
Company's profile:
TIANJIN ZHENXIANG STRIP PROCESSING CO., LTD, covering about 7000 square maters, which one of the five wholly-owned subsidiaries of Nanxiang Group. The number of our staff is more than 600. At present, we own 40 sets of slitting flat bar production lines, daily output is up to 2000 tons. In line, we are named " the biggest base of processing flat bar in china ".Â
Nanxiang Group, founded in 2005, is the first strip processing industry brand of China. As one of the integrated iron and steel enterprise, it's a collection of strip slitting, hot-rolled flat steel production, hot dip galvanized processing, international trade, logistics and distribution. Â
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Main products include, flat bar, serrated flat steel, I type steel, scaffolding welded steel pipe, steel strip, wire rod, angles, channels, and H beam, with its products beingexported to Korea, Japan, southeast Asia, north Africa, Australia, the Americas and Europe. The annual sales has been over 1.5 billion RMB. It won many customers' and similar companies' recognition and praise by its good reputation and reliable quality.
Â
We will always adhere to the principle of "quality first, service supreme, mutual benefit", the development of create resplendence with you. Zhenxiang will create brilliant future together with you.
Contact
KarenÂ
Size of steel pipe
Namesteel pipe
steel pipe Size:
OD:1/2-10'Â Â Â (20mm-273mm)
Â
Wall Thickness:2-10mm
SCH30,SCH40,STD,XS,SCH80,SCH160
Â
Length:5.8--12M
Â
Steel pipe material
Q195 → Grade B, SS330,SPHC, S185
Q215 → Grade C,CS Type B,SS330, SPHC
Q235→GradeD,SS400,S235JR,S235JO,S235J2, ST33,A53,
steel pipe Standard
 BS EN10296,BS EN10025,BS EN10297,BS6323, BSEN10219,BS EN10217, BS 1387-1985Â
DIN 1026, DIN 1629/3
GB/T13793-1992,GB/T14291-2006,GB/T3091-2001,GB/T3092-12001,GB3640-88
steel pipe Usage
Used For Structure, Accessorize And Construction
steel pipe ends
1)Â Plain
2)Â Beveled
3) Thread with Coupling or cap
steel pipe end protector
1) Plastic pipe cap
2) Iron protector
steel pipe technique
Electronic Resistance Welded (ERW )
Type
steel pipe
steel pipe delivery
1)Â Â Â Â Container
2)    Bulk carrier
steel pipe
Payment
L/C, T/T, Western Union
size of steel pipe
Out diameter
(mm)
Wall thickness
(mm)
Length
(mm)
48.32.5
6/9/12
48.3
2.75
6/9/12
48.3
3.0
6/9/12
Â
Company's profile:
TIANJIN ZHENXIANG STRIP PROCESSING CO., LTD, covering about 7000 square maters, which one of the five wholly-owned subsidiaries of Nanxiang Group. The number of our staff is more than 600. At present, we own 40 sets of slitting flat bar production lines, daily output is up to 2000 tons. In line, we are named " the biggest base of processing flat bar in china ".Â
Nanxiang Group, founded in 2005, is the first strip processing industry brand of China. As one of the integrated iron and steel enterprise, it's a collection of strip slitting, hot-rolled flat steel production, hot dip galvanized processing, international trade, logistics and distribution. Â
Â
Main products include, flat bar, serrated flat steel, I type steel, scaffolding welded steel pipe, steel strip, wire rod, angles, channels, and H beam, with its products beingexported to Korea, Japan, southeast Asia, north Africa, Australia, the Americas and Europe. The annual sales has been over 1.5 billion RMB. It won many customers' and similar companies' recognition and praise by its good reputation and reliable quality.
Â
We will always adhere to the principle of "quality first, service supreme, mutual benefit", the development of create resplendence with you. Zhenxiang will create brilliant future together with you.
Contact
KarenÂ
The measurement principles of dissolved oxygen analyzers usually have the following types:
Polarography: An electrode is immersed in water to measure the dissolved oxygen content based on a change in current or potential generated by a redox reaction between the dissolved oxygen and the electrode.
Optical method: This method uses an optical Dissolved Oxygen Sensor to measure the dissolved oxygen concentration. One common optical sensor is the oxygen sensor, which uses an oxygen-sensitive dye to detect the amount of dissolved oxygen in water. These sensors can measure using principles such as fluorescence or absorption spectroscopy.
Chemical methods: Chemical methods typically use reagents to measure dissolved oxygen levels. These reagents chemically react with dissolved oxygen to produce a measurable color change or electrical signal, allowing the concentration of dissolved oxygen to be determined.
Mild Carbon High Quality Black ERW Scaffolding Welded Steel Pipe
Model NO.: Q235 SS400 A36
Grade: 10#-45#, A53-A369, 10#, 20#, 45#, A53(a, B)
Thickness: 0.4 - 15 Mm
Outer Diameter: 13 - 610 Mm
Secondary or Not: Non-Secondary
Profile: Steel Pipe
Loading Port: Xingang
Trademark: Zhenxiang
Transport Package: in Bulk as The Steel Pipe Mill
Specification: GB standard
Origin: Tianjin China(Mainland)
Model NO.: Q235 SS400 A36
Grade: 10#-45#, A53-A369, 10#, 20#, 45#, A53(a, B)
Thickness: 0.4 - 15 Mm
Outer Diameter: 13 - 610 Mm
Secondary or Not: Non-Secondary
Profile: Steel Pipe
Loading Port: Xingang
Trademark: Zhenxiang
Transport Package: in Bulk as The Steel Pipe Mill
Specification: GB standard
Origin: Tianjin China(Mainland)