Computers OverClocked Forums Computers OverClocked
"Not just another computer help website."

FAQ Search Upgrade Register
Favorite Threads Private Messaging Login

Menu
Forums
RegisterRegister
Over Clocking Guide
Over Clocking Help
Computer Building Help
Virus/Security Alerts
Broadband Tweaks
Computing Guides
Featured Hot Deals
Reviews
Tools


Top 25 reasons to register!

Advertise your link here for $19.99/month!

 
 Computers OverClocked Welcomes You!
 Date/Time is Thu Jul 19, 2018 9:05 pm
 Computer Photo Gallery
Computing News Headlines:
New HTC Android Phones Tweaked to Evade Apple Patents
Ivy Bridge Temperatures Its Gettin Hot in Here
Adobe CS6 on sale today, Creative Cloud coming May 11th

Passivation purpose and method of stainless steel pipe
Post new topic Reply to topic Computers OverClocked Forums - The General Store All times are GMT - 5 Hours - EDT
Author Message
yaangcom
Member



User is offline 
Send private message
Joined: Apr 26 2016
Posts: 396

PostPost subject: Passivation purpose and method of stainless steel pipe
Posted: Thu Jun 14, 2018 4:21 am
Reply with quote

Usually the stainless steel pipe as the water supply pipeline before, in the process there will be a passivation process, its purpose is to protect the formation of chromium oxide coating on the inner wall of stainless steel pipe with smooth surface, so that it can resist high temperature of liquid on the surface of stainless steel may produce intergranular corrosion.
One of the commonly used formulations of passivation treatment is the use of purified water and chemical pure nitric acid to become 8% of the acid solution. Circulation at 49 to 52 degrees centigrade after 60 minutes. 8%, the role of nitric acid is mainly until the action of oxidant. The surface of stainless steel is oxidized to nitric oxide, so that it can achieve the purpose of passivation. The manufacturer is not usually stainless steel passivation, all processors to do. For the passivation water pipe, the stainless steel pipe must be polished both inside and outside, and the inner surface of the pipe must be passivated.
The whole passivation process of stainless steel pipes includes cleaning, passivation and disinfection. The main processes are deionized water circulation pre flushing, alkaline solution cycling cleaning, purified water washing, passivation, purified water washing, discharging and pure steam disinfection.
The first is the purified water flushing, a liquid storage tank and a water pump in advance and passivation of the water supply pipeline into a circulating passage, injecting deionized water at room temperature enough in the liquid storage tank, the use of pumps for circulation, open the drain valve in 15 minutes, while circulating emissions, the best put a meter.
The next is alkali cleaning, prepare sodium hydroxide, chemical reagent and add hot water to make 1% of the lye in advance, then use the pump to do the cycle. The time is no less than 30 minutes, then it will be discharged again.
Next is to rinse, add purified water to the liquid storage tank, start the pump and open the drain valve to discharge, until the electrical resistivity of each outlet is consistent with that of the water in the tank, and the emission time is longer than 30 minutes.
The following is the passivation procedure, can use the purified water and nitrate with chemical pure acid in a concentration of 8%, 60 minutes after the discharge cycle at 49 DEG -52 DEG C; using 3% or 20% hydrofluoric acid, nitric acid and 77% water purification solution, solution temperature control at 25-35 DEG C, cycling 10-20 minutes then discharge, finally through high pressure steam to flush the water supply pipeline to remove the dirt.
The flushing is divided into initial washing and final rinsing. The former is rinsed at room temperature, and the time is more than 5 minutes. The latter requires that the electrical resistivity of import and export ionic water should be consistent.
Source: China Stainless Steel Pipelines Manufacturer - Yaang Pipe Industry Co., Limited (www.yaang.com)
Back to top
 Rate Post
jeje222
Member



User is offline 
Send private message
Joined: May 18 2017
Posts: 768

PostPost subject: Re: [討論]宮廷牌
Posted: Tue Jul 10, 2018 2:41 am
Reply with quote

christian louboutin shoes
クロムハーツ
mulberry uk
tods outlet
pandora charms
nike requin pas cher
yeezy
pandora
pandora jewelry outlet
golden goose
new nike shoes
true religion jeans
huaraches
fitflops sale clearance
coach outlet online
nhl jerseys
ralph lauren uk
ugg boots clearance
louboutin shoes
ugg boots clearance
pandora charms outlet
canada goose jackets
hermes belt
nike factory store
jimmy choo outlet
ralph lauren outlet
mlb jerseys
coach outlet
ray ban eyeglasses
red bottom shoes
polo ralph lauren
nike soldes femme
nike blazer pas cher
pandora charms outlet
ralph lauren uk
ralph lauren uk
air jordan 8
nike outlet
off white jordan 1
vibram fivefingers
michael kors
moncler online outlet
manolo blahnik outlet
pandora
basketball shoes
jordan shoes
ugg boots
uggs outlet
ray ban eyeglasses
canada goose jackets
manolo blahnik
ralph lauren outlet
nike air max 95 ultra
polo lacoste
nike factory store
golden goose shoes
christian louboutin shoes
nike presto femme
oakley sunglasses wholesale
ray ban sunglasses
kate spade outlet
uggs outlet
canada goose jackets
true religion outlet
pandora outlet
off white outlet
moncler
canada goose outlet
longchamp outlet
nba jerseys
ralph lauren uk
kate spade outlet online
ugg boots on sale 70% off
true religion jeans
canada goose outlet
oakley sunglasses
moncler online outlet
canada goose outlet
ed hardy uk
true religion outlet store
ralph lauren outlet
ugg boots
oakley sunglasses wholesale
cheap jordans
yeezy shoes
adidas football soldes
kate spade outlet
jordan 8
polo ralph lauren
pandora charms
ralph lauren uk
pandora jewelry
jordan shoes
cheap jordan shoes
golden goose sneakers
christian louboutin sale
canada goose outlet
superdry clothing
nike presto
fitflops sale clearance
off-white clothing
red bottoms
salomon
tory burch handbags
pandora
canada goose jackets
moncler outlet
ugg boots clearance
ugg boots clearance
canada goose jackets
polo ralph lauren outlet
coach outlet store online
christian louboutin shoes
ugg boots
supreme shirt
manolo blahnik shoes
longchamp outlet
ugg boots on sale 70% off
michael kors outlet clearance
coach outlet online
ralph lauren uk
ray ban eyeglasses
louboutin shoes
pandora
christian louboutin shoes
ralph lauren outlet
converse shoes
coach factory outlet
coach factory outlet
canada goose jackets
nike air jordan
canada goose jackets
coach factory outlet
air jordan uk
kate spade outlet online
nike shoes for women
christian louboutin shoes
coach outlet online
ralph lauren uk
pandora outlet
ugg boots clearance
ugg boots clearance
pandora
moncler outlet
coach outlet
nike huarache femme
ultra boost
christian louboutin sale
coach outlet online
off white
coach factory outlet
coach outlet online
yeezy boost 350
ugg boots clearance
canada goose jackets
ralph lauren uk
moncler online
tn pas cher
moncler outlet
fitflops sale clearance
jordans
soccer shoes
louboutin shoes
supreme outlet
pandora
true religion outlet store
nike air max 95
red bottom
bottega
lacoste outlet
yeezy boost 350 v2
adidas yeezy
cheap nba jerseys
moncler outlet
vibram five fingers
ugg boots clearance
dsquared
ugg boots on sale 70% off
adidas superstar
reebok
louboutin shoes
coach factory outlet
canada goose outlet
kate spade outlet
vibram fivefingers shoes
oakley sunglasses
michael kors outlet
oakley sunglasses wholesale
nike shoes
nike shoes for men
louboutin shoes
adidas outlet
ferragamo shoes
coach outlet
canada goose outlet
off white shoes
ralph lauren outlet
polo ralph lauren
moncler jackets
canada goose
canada goose jackets
uggs outlet
supreme new york
tory burch outlet
moncler uk
off white clothing brand
nike shoes
basket nike femme
giuseppe zanotti
michael kors outlet online
golden goose
moncler online outlet
supreme clothing
christian louboutin shoes
reebok shoes
coach outlet
nike factory
jordans
ugg boots clearance
coach outlet
hugo boss sale
off-white clothing
adidas ultra boost
ray ban sunglasses
nike chaussure
coach outlet online
jimmy choo shoes
nike air max
nike huarache
ralph lauren outlet
jordan shoes
issey miyake perfume
nike outlet
bottega veneta
off white clothing
coach outlet online
christian louboutin sale
mbt
supreme shirt
nike outlet
prada shoes
nike outlet
polo ralph lauren
off white nike
true religion outlet
ralph lauren uk
ugg boots
ecco shoes
chrome hearts
pandora charms
moncler jackets
pandora outlet
nike shoes
giuseppe zanotti sneakers
pandora jewelry
adidas outlet online
louboutin shoes
cheap nhl jerseys
moncler outlet
ralph lauren outlet
adidas shoes
christian louboutin shoes
oakley sunglasses wholesale
red bottom
louboutin outlet
skechers shoes
ralph lauren outlet
uggs outlet
kate spade handbags
ugg boots
pandora charms outlet
coach outlet
fitflops shoes
prada outlet
christian louboutin outlet
moncler jackets
coach outlet online
skechers outlet
ralph lauren outlet
off white clothing
super dry
kate spade outlet online
michael kors outlet online sale
cheap ray bans
mlb shop
ugg boots
ralph lauren uk
coach outlet
salomom shoes
oakley sunglasses
converse trainers
hugo boss outlet
off white jordan 1
mbt shoes outlet
valentino shoes
pandora
ugg boots uk
nhl jerseys wholesale
michael kors outlet online
jordan shoes
red bottom shoes
ralph lauren uk
ralph lauren outlet
coach outlet
golden goose sneakers
football pas cher
hermes belts
ultra boost 3.0
coach outlet
moncler jackets
prada shoes
pandora jewelry
ralph lauren outlet
maillot football pas cher
michael kors outlet online
true religion outlet
ecco outlet
nike soldes
cheap snapbacks
prada handbags
canada goose outlet
cheap basketball shoes
ugg boots on sale 70% off
football soldes
ugg boots
nike air max 2017
nike outlet store
dsquared2
salomom shoes
moncler jackets
christian louboutin outlet
uggs outlet
moncler online
true religion outlet
canada goose outlet
michael kors outlet
adidas yeezy
ugg boots
kate spade outlet
oakley sunglasses
adidas nmd
pandora jewelry
longchamp handbags
dsquared
polo ralph lauren outlet
pandora charms outlet
canada goose outlet
basket nike
ugg boots clearance
ralph lauren outlet
ralph lauren uk
soccer boots
ray ban sunglasses
coach outlet
supreme clothing
jordans
ed hardy clothing
polo ralph lauren outlet
ray ban sunglasses
cheap jordans
pandora jewelry
pandora jewelry outlet
ugg boots on sale 70% off
canada goose jackets
air jordan 4
uggs outlet
pandora
moncler jackets
ray ban eyeglasses
golden goose shoes
canada goose jackets
canada goose jackets
nike tn pas cher
mbt shoes
canada goose outlet
ugg boots
moncler online outlet
christian louboutin outlet
ferragamo outlet
kate spade outlet
nike huarache
christian louboutin shoes
off white shoes
ugg boots clearance
longchamp bags
fitflops
nike outlet store
coach outlet
coach factory outlet
pandora charms
pandora charms
fitflops sale clearance
moncler online
pandora jewelry
christian louboutin shoes
coach outlet online
pandora jewelry
coach outlet online
ugg boots
dsquared2
nfl jerseys
nike blazer
saics running shoes
nike requin
cheap nfl jerseys
adidas superstars
canada goose uk
jordan shoes
louboutin shoes
christian louboutin shoes
nike chaussure femme
louboutin shoes
moncler jackets
kate spade outlet online
issey miyake
kate spade
fitflops sale
pandora
true religion jeans
christian louboutin outlet
ugg boots
nike shoes
canada goose jackets
michael kors handbags
mbt shoes
jordan 4
ugg boots
ralph lauren outlet
longchamp handbags
nike factory outlet
salomon
moncler online
nike factory outlet
asics shoes
nike air max 90
tods shoes
jordan shoes
air max 90
pandora
canada goose uk
pandora jewelry outlet
christian louboutin shoes
michael kors outlet
valentino
mulberry handbags
coach outlet
fitflops sale
coach outlet
adidas nmd runner
christian louboutin shoes
ray ban sunglasses
snapbacks wholesale
true religion outlet
louboutin shoes
0709
Back to top
 Rate Post
View previous topic :: View next topic  
Post new topic Reply to topic Computers OverClocked Forums - The General Store Page 1 of 1


Similar Topics
Topic Author Forum Replies Posted
No new posts Specification and application of stai... yaangcom The General Store 0 Thu Jul 19, 2018 5:58 pm View latest post
No new posts characteristics of stainless steel se... yaangcom The General Store 0 Tue Jul 17, 2018 10:00 am View latest post
No new posts Two forms and application examples of... yaangcom The General Store 0 Mon Jul 16, 2018 10:34 am View latest post
No new posts surface treatment process for stainle... yaangcom The General Store 0 Sun Jul 15, 2018 10:09 am View latest post
No new posts Strength difference of various kinds ... yaangcom The General Store 0 Wed Jul 11, 2018 7:50 pm View latest post