The advantage of conduit of thin wall stainless steel

The space that lives the mankind suppose compares the body that be an upright person, live all sorts of conduit of dimensional laid are mixed with respect to example blood-vessel nerve. Carry exceedingly good drinking water, the choice of pipe fitting tubal material comes close principal. To this, the author visited the concerned expert of branch of stainless steel of association of Chinese spy steel a few days ago.

The expert thinks the building uses conduit nowadays is take cover engineering and conduit well project mostly, hypothesis canal material is chosen undeserved, calculate according to the expert, will give out endowment person form 10~20 of value of conduit material itself the pecuniary loss of times. Other canal material is chosen also is water industry develops a barometer that advance. 5 of service pipe material choose a principle: Sex of on the safe side, economy, clean sex, energy-saving, can continue to spread out, this also is a few big features of green canal material, the talent tubal material that needs to be able to satisfy these principles admirably only is real good canal talent.
　　
We let just face 5 kinds of big commonly used water supply to provide course material stainless steel from a few under canal of canal, copper pipe, galvanization, multiple tube (include steel model, aluminous model, copper model and stainless steel multiple tube to wait) reach plastic pipe (include PE, PPR.
　　
Intensity preps according to
　　
Water industry most the stainless steel that often uses is 304 with 316 stainless steel, they are OK and contented great majority water treatment and be defeated involve a requirement.
　　
The tensile strength that 304 stainless steel provide is 2 times of steel tube, the 3~4 that is copper pipe times, the 8~10 of plastic pipe times. The intensity resolution of material conduit is able to bear or endure firm bump, on the safe side. And on the safe side is the most principal in building water supply entreat. In touch the state that beat to fall by outside force, stainless steel conduit is slack probably the gender is dinky, and copper pipe and plastic pipe slack rate preps according to tall, conduit is easy by construction or decorate attaint 2 times. It is slack that a few big first cities of domestic reside the chief essential factor that complains to plastic conduit, a slack chief essential factor is plastic conduit via living outside force is touched attack.
　　
Actuating pressure of high-rise water supply is more than 0.6Mpa commonly; To providing material bear pressure entreat taller. Plastic pipe is used at actuating pressure of water supply system to all be less than this value, cannot hold the position of; Multiple tube coefficient of expansion of two kinds of material is not commensurate, if agglutinate is not firm or temperature alters big when easy happening from the layer; Thin wall copper pipe bear pressure can amount to 5.9Mpa most; And because,thin wall stainless steel is in charge of exceedingly good mechanical function, can accept very high water supply pressure, can amount to 10Mpa above, especially appropriate high-rise water supply.
　　
Actually, many worlds' famous high-rise chose stainless steel water supply to be in charge of. If the communication tower of Malaysia kuala lumpur is tower of the 4th tall communication, choose 304 stainless steel conduit and be able to bear or endure high-pressured Victaulic connect the building water supply to 421 meters; At the Taipei banking center that built 2004, 508 meters tall, will be the world's top structure, conduit of its water supply includes to be in charge of is the stainless steel conduit that the diameter is 318 meters and Victaulic connect.
　　
Heat expands function and heat preservation function prep according to
　　
Stainless steel canal heats up coefficient of expansion and copper pipe about the same, it is 1.5 times of steel tube more general, stainless steel canal has heat to bilge under photograph comparing cold shrink slow feature. Plastic pipe coefficient of expansion is blemish of its funeral body greatly too, the unsuited conduit that make heat. Below the condition that alters in environmental temperature, plastic pipe is easy produce the safe risk such as leakage, endanger in take cover engineering especially bigger. Multiple tube is put in the doubt with abhorrent coefficient of expansion of two kinds of material, connection of two kinds of material is in easy happening craze, form conduit blowout.
　　
The thermal conductance that stainless steel is in charge of is the 1/25 of copper pipe, it is the 1/4 of general steel tube, especially appropriate hot water is carried, the heat preservation use that compares copper pipe is good much.
　　
Anti-corrosive function preps according to
　　
One of advantages with the most remarkable ability of stainless steel canal are his exceedingly good anti-corrosive function, be in charge of in 5 kinds is first-rate in material. Because stainless steel can produce passivation effect with oxidizer, a Cr2O3 of tough and close diaphragm of Fu Ge oxide is formed in the surface, what useful stem oxidation reacts is farther happen. And other metal provides material, if talent of passivation of galvanization conduit, copper pipe is very small, the copper pipe that this is galvanization canal is anti-corrosive function far not as good as the crucial essential factor of material of stainless steel canal.
　　
Stainless steel won't produce uniform corrosion in that way like carbolic steel, coating need not be protected when applying; Choose stainless steel conduit, did not manacle to the chemical composition of water, because stainless steel is in the water of all sorts of oxygen content, temperature, PH and hardness,all have be able to bear or endure wonderfully corrode sex; Stainless steel conduit can suffer very high velocity of flow, although velocity of flow is more than 40 meters / second, still hold to extremely low corrode rate, not exceed 0.003 millimeter / year, especially appropriate high-rise water supply.
　　
Stainless steel does not produce some to corrode commonly, 304 stainless steel can be able to bear or endure the chloride content that suffer amounts to 200ppm, 316 stainless steel can be able to bear or endure the chloride content that suffer can amount to 1000ppm, basis of this one conclusion shows experimental data and already got those who use experience confirm.
　　
Of clean function and environmental protection function prep according to
　　
Superior of function of cleanness of stainless steel conduit, put an end to " red water, La Lushui and risk water " doubt, without peculiar smell, do not written guarantee dirty, without harmful material cent goes out, hold to water quality pure, harmless to human body health. Abroad tens of year the lab that uses exercitation and not same country is examined all flash; The cent of stainless steel tantalum gives a quantity to compare WHO and pattern of European drinking water (the custom of world each country all consults these two standards) of the mark fiducial value of custom 5% even low. Safety of itself of material of original stainless steel is avirulent, clean sex is good wait for character, be in to touch result of tens of the year's harvest use each field of human body health by stainless steel already before history place confirms adequately, those who become be common knowledge is actual. The level that stainless steel includes to the job such as cooking utensils of industry of beverage, milkings, brew, pharmacy, tableware is applied for long and make these works in food industry not only uses material, and use extensively still at entreating system of extremely expensive cure choose and employ persons to data security and clean sex if embedded content is all sorts of bracket, artificial hammer of the steel inside joint and body, become right clean degree entreat exceeding semiconductor industry the standard of clean room uses material. Follow us to rise ceaselessly to what water quality entreats with code the standard is opposite what quantity of acquit of contaminant of material of the canal in water manacles is increasingly austere, carry exceedingly good the stainless steel of blame of optimal canal material that water not is belonged to.
　　
Material of stainless steel canal is had the longest use birthday number. Use state analysis from foreign stainless steel, of stainless steel conduit apply birthday number to be able to amount to 100 years, at least also has 70 years, the birthday number with the building is same long. And the influence that the number of birthday of material of birthday number acceptor acceptor of multiple tube and heat expand and manacle, and multiple tube by two kinds of material are so complex together, produce contact layer to fall probably the gender is very big, also affect birthday number. The birthday number of plastic pipe decides hard in home, depend on greatly produce engineering technology and material quality, quality the good and bad are intermingled, big company's superior canal material is the longest can amount to 25~30 year, and number needs false and inferior Guan Caishou a few years only probably. The ageing doubt of plastic pipe preps according to outstanding, sunshine, temperature, chemical material, mechanical element, time is met the ageing that brings about it, of ageing plastic easy happening fall to blow up in hydraulic concussion and water hammer action, apply birthday number to be reduced greatly. Law of connection of in addition hot frit makes connection place easily slack or material deterioration.
　　
The expert still tells customer, choose stainless steel conduit, initiative contributive not tall.
　　
It is precious that we think to choose stainless steel conduit commonly, actual state is not such, thin wall stainless steel is in charge of be born to entered civil bazaar to invent a condition for stainless steel canal.
　　
According to concerning a city project example inquired the initiative quote of 5 kinds of pipe fitting tubal material 2000; Stainless steel is in charge of the even quoted price of material pipe fitting and copper pipe a copy kept as a record to keep balance, taller than galvanization canal and PPR canal 2~4 times, 2 times taller than multiple tube. Be like building of house of Qingdao high level 20 thousand square metre, the director is DN65, establish a canal to be DN32, raise a canal to be the cold hot water of 304 stainless steel of DN15 to be in charge of, material bribe amount 200 thousand yuan, material charge is even 10 yuan / square metre.


　　
Visible, the canal compares thin wall stainless steel although plastic pipe quote is some taller, but get high very finite, and, the charge of the feed pipe of project of big city real-estate such as Beijing, Shanghai occupies the 0.2%~0.5% of house price only, raises because of stainless steel conduit cost more appear very little. But material function however superior is gotten much, administrative levels rose greatly.
　　
Can say, administrative levels of stainless steel conduit is high, quoted price is not high. Actually, choose stainless steel conduit not only initiative and contributive not tall, capital of cycle of Ju Jishou number is very low, this is stainless steel material is in in the largest dominant position that can not compare for other material economically surely.
　　
The stainless steel of whole breed is chromic content the ferroalloy in 11% above, show when stainless steel when air or water are medium, its surface can form a thin and close protection chromium at once oxide passivation film, it makes stainless steel has exceedingly good corrosion resistance. This film can be corrected by oneself by cut suppose, there is contented oxygen in watering, can drive this is corrected and protect a process.
　　
Water supply often is cast chloric undertake alexipharmic sterilization, the dissociate in general cop is chloric do not affect the carry of stainless steel to use function. Drink healthy water with stainless steel conduit it is thus clear that, really advantage is great.
　　
The space that lives the mankind suppose compares the body that be an upright person, live all sorts of conduit of dimensional laid are mixed with respect to example blood-vessel nerve. Carry exceedingly good drinking water, the choice of pipe fitting tubal material comes close principal. To this, the author visited the concerned expert of branch of stainless steel of association of Chinese spy steel a few days ago.
　　
The expert thinks the building uses conduit nowadays is take cover engineering and conduit well project mostly, hypothesis canal material is chosen undeserved, calculate according to the expert, will give out endowment person form 10~20 of value of conduit material itself the pecuniary loss of times. Other canal material is chosen also is water industry develops a barometer that advance. 5 of service pipe material choose a principle: Sex of on the safe side, economy, clean sex, energy-saving, can continue to spread out, this also is a few big features of green canal material, the talent tubal material that needs to be able to satisfy these principles admirably only is real good canal talent.
　　
We let just face 5 kinds of big commonly used water supply to provide course material stainless steel from a few under canal of canal, copper pipe, galvanization, multiple tube (include steel model, aluminous model, copper model and stainless steel multiple tube to wait) reach plastic pipe (include PE, PPR.
　　
Intensity preps according to
　　
Water industry most the stainless steel that often uses is 304 with 316 stainless steel, they are OK and contented great majority water treatment and be defeated involve a requirement.
　　
The tensile strength that 304 stainless steel provide is 2 times of steel tube, the 3~4 that is copper pipe times, the 8~10 of plastic pipe times. The intensity resolution of material conduit is able to bear or endure firm bump, on the safe side. And on the safe side is the most principal in building water supply entreat. In touch the state that beat to fall by outside force, stainless steel conduit is slack probably the gender is dinky, and copper pipe and plastic pipe slack rate preps according to tall, conduit is easy by construction or decorate attaint 2 times. It is slack that a few big first cities of domestic reside the chief essential factor that complains to plastic conduit, a slack chief essential factor is plastic conduit via living outside force is touched attack.
　　
Actuating pressure of high-rise water supply is more than 0.6Mpa commonly; To providing material bear pressure entreat taller. Plastic pipe is used at actuating pressure of water supply system to all be less than this value, cannot hold the position of; Multiple tube coefficient of expansion of two kinds of material is not commensurate, if agglutinate is not firm or temperature alters big when easy happening from the layer; Thin wall copper pipe bear pressure can amount to 5.9Mpa most; And because,thin wall stainless steel is in charge of exceedingly good mechanical function, can accept very high water supply pressure, can amount to 10Mpa above, especially appropriate high-rise water supply.
　　
Actually, many worlds' famous high-rise chose stainless steel water supply to be in charge of. If the communication tower of Malaysia kuala lumpur is tower of the 4th tall communication, choose 304 stainless steel conduit and be able to bear or endure high-pressured Victaulic connect the building water supply to 421 meters; At the Taipei banking center that built 2004, 508 meters tall, will be the world's top structure, conduit of its water supply includes to be in charge of is the stainless steel conduit that the diameter is 318 meters and Victaulic connect.
　　


Heat expands function and heat preservation function prep according to
　　
Stainless steel canal heats up coefficient of expansion and copper pipe about the same, it is 1.5 times of steel tube more general, stainless steel canal has heat to bilge under photograph comparing cold shrink slow feature. Plastic pipe coefficient of expansion is blemish of its funeral body greatly too, the unsuited conduit that make heat. Below the condition that alters in environmental temperature, plastic pipe is easy produce the safe risk such as leakage, endanger in take cover engineering especially bigger. Multiple tube is put in the doubt with abhorrent coefficient of expansion of two kinds of material, connection of two kinds of material is in easy happening craze, form conduit blowout.
　　
The thermal conductance that stainless steel is in charge of is the 1/25 of copper pipe, it is the 1/4 of general steel tube, especially appropriate hot water is carried, the heat preservation use that compares copper pipe is good much.
　　
Anti-corrosive function preps according to
　　
One of advantages with the most remarkable ability of stainless steel canal are his exceedingly good anti-corrosive function, be in charge of in 5 kinds is first-rate in material. Because stainless steel can produce passivation effect with oxidizer, a Cr2O3 of tough and close diaphragm of Fu Ge oxide is formed in the surface, what useful stem oxidation reacts is farther happen. And other metal provides material, if talent of passivation of galvanization conduit, copper pipe is very small, the copper pipe that this is galvanization canal is anti-corrosive function far not as good as the crucial essential factor of material of stainless steel canal.
　　
Stainless steel won't produce uniform corrosion in that way like carbolic steel, coating need not be protected when applying; Choose stainless steel conduit, did not manacle to the chemical composition of water, because stainless steel is in the water of all sorts of oxygen content, temperature, PH and hardness,all have be able to bear or endure wonderfully corrode sex; Stainless steel conduit can suffer very high velocity of flow, although velocity of flow is more than 40 meters / second, still hold to extremely low corrode rate, not exceed 0.003 millimeter / year, especially appropriate high-rise water supply.
　　
Stainless steel does not produce some to corrode commonly, 304 stainless steel can be able to bear or endure the chloride content that suffer amounts to 200ppm, 316 stainless steel can be able to bear or endure the chloride content that suffer can amount to 1000ppm, basis of this one conclusion shows experimental data and already got those who use experience confirm.
　　
Of clean function and environmental protection function prep according to
　　
Superior of function of cleanness of stainless steel conduit, put an end to " red water, La Lushui and risk water " doubt, without peculiar smell, do not written guarantee dirty, without harmful material cent goes out, hold to water quality pure, harmless to human body health. Abroad tens of year the lab that uses exercitation and not same country is examined all flash; The cent of stainless steel tantalum gives a quantity to compare WHO and pattern of European drinking water (the custom of world each country all consults these two standards) of the mark fiducial value of custom 5% even low. Safety of itself of material of original stainless steel is avirulent, clean sex is good wait for character, be in to touch result of tens of the year's harvest use each field of human body health by stainless steel already before history place confirms adequately, those who become be common knowledge is actual. The level that stainless steel includes to the job such as cooking utensils of industry of beverage, milkings, brew, pharmacy, tableware is applied for long and make these works in food industry not only uses material, and use extensively still at entreating system of extremely expensive cure choose and employ persons to data security and clean sex if embedded content is all sorts of bracket, artificial hammer of the steel inside joint and body, become right clean degree entreat exceeding semiconductor industry the standard of clean room uses material. Follow us to rise ceaselessly to what water quality entreats with code the standard is opposite what quantity of acquit of contaminant of material of the canal in water manacles is increasingly austere, carry exceedingly good the stainless steel of blame of optimal canal material that water not is belonged to.
　　
Material of stainless steel canal is had the longest use birthday number. Use state analysis from foreign stainless steel, of stainless steel conduit apply birthday number to be able to amount to 100 years, at least also has 70 years, the birthday number with the building is same long. And the influence that the number of birthday of material of birthday number acceptor acceptor of multiple tube and heat expand and manacle, and multiple tube by two kinds of material are so complex together, produce contact layer to fall probably the gender is very big, also affect birthday number. The birthday number of plastic pipe decides hard in home, depend on greatly produce engineering technology and material quality, quality the good and bad are intermingled, big company's superior canal material is the longest can amount to 25~30 year, and number needs false and inferior Guan Caishou a few years only probably. The ageing doubt of plastic pipe preps according to outstanding, sunshine, temperature, chemical material, mechanical element, time is met the ageing that brings about it, of ageing plastic easy happening fall to blow up in hydraulic concussion and water hammer action, apply birthday number to be reduced greatly. Law of connection of in addition hot frit makes connection place easily slack or material deterioration.
　　
The expert still tells customer, choose stainless steel conduit, initiative contributive not tall.
　　
It is precious that we think to choose stainless steel conduit commonly, actual state is not such, thin wall stainless steel is in charge of be born to entered civil bazaar to invent a condition for stainless steel canal.
　　
According to concerning a city project example inquired the initiative quote of 5 kinds of pipe fitting tubal material 2000; Stainless steel is in charge of the even quoted price of material pipe fitting and copper pipe a copy kept as a record to keep balance, taller than galvanization canal and PPR canal 2~4 times, 2 times taller than multiple tube. Be like building of house of Qingdao high level 20 thousand square metre, the director is DN65, establish a canal to be DN32, raise a canal to be the cold hot water of 304 stainless steel of DN15 to be in charge of, material bribe amount 200 thousand yuan, material charge is even 10 yuan / square metre.
　　
Visible, the canal compares thin wall stainless steel although plastic pipe quote is some taller, but get high very finite, and, the charge of the feed pipe of project of big city real-estate such as Beijing, Shanghai occupies the 0.2%~0.5% of house price only, raises because of stainless steel conduit cost more appear very little. But material function however superior is gotten much, administrative levels rose greatly.
　　
Can say, administrative levels of stainless steel conduit is high, quoted price is not high. Actually, choose stainless steel conduit not only initiative and contributive not tall, capital of cycle of Ju Jishou number is very low, this is stainless steel material is in in the largest dominant position that can not compare for other material economically surely.
　　
The stainless steel of whole breed is chromic content the ferroalloy in 11% above, show when stainless steel when air or water are medium, its surface can form a thin and close protection chromium at once oxide passivation film, it makes stainless steel has exceedingly good corrosion resistance. This film can be corrected by oneself by cut suppose, there is contented oxygen in watering, can drive this is corrected and protect a process.
　　
Water supply often is cast chloric undertake alexipharmic sterilization, the dissociate in general cop is chloric do not affect the carry of stainless steel to use function. Drink healthy water with stainless steel conduit it is thus clear that, really advantage is great.