PVC pipe production after the completion of the follow-up work
After the completion of the production of PVC pipe fittings is very important, in the pipe is produced successfully and after passing the test, mainly to do the work including marking, packaging, transportation, storage.
1, each PVC pipe fittings shall not be less than two permanent mark. Mark should at least include the following contents: product name should be marked: (PVC-C) (PVC-U) non drinking water or drinking water; size: nominal pressure, nominal diameter and wall thickness of the site; production plant; the standard number; the production date and so on, is the main parts, one should basically understand.
2, packaging: according to user requirements, according to customer requirements for different packaging, at the same time also have to consider whether the packaging of the pipe fittings with the role of protection.
3, transport tube during transportation, not exposure, stain, stress and damage; protective measures must be skilled in the transport process.
4, storage: pipe should be reasonably stacked, away from the heat source. Stacking height does not exceed 1.5m. Expanded mouth parts staggered to avoid extrusion deformation, when the open storage, must be covered to prevent exposure.
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2016年9月27日星期二
2016年9月26日星期一
Blow molding process of PVC water supply pipe
Blow molding process of PVC water supply pipe
Index properties of PVC pipe to blow molding grade, such as melt strength, toughness and ESCR, similar to hot forming application level, so we can use the similar grade. The blow is usually smaller for packaging container manufacturing, pharmaceuticals, cosmetics and shampoo. One advantage of this process is the production of PVC water supply pipes to automatically go to the corner, no need to be like the general blow molding process as late finishing. Although there are some narrow MWD grade will be used to improve the surface finish, generally used to wide width MWD grade.
1, PVC water supply pipe interface generally has two ways: rubber ring interface, glue stick interface.
1) rubber ring is in the end of the pipe expanding machine automatically expanded into a socket with a recess, put on the flexible rubber sealing ring, one end of the other pipe without flaring inserted into the sealing sockets installed around the complete connection.
2) glue stick interface mode is at one end of the pipe is expanded into a smooth socket, and the other end of the pipe is not expanded to the outside of the surface and the expansion of the mouth of the table coated with a dedicated glue, and then through the connection to complete the connection.
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Index properties of PVC pipe to blow molding grade, such as melt strength, toughness and ESCR, similar to hot forming application level, so we can use the similar grade. The blow is usually smaller for packaging container manufacturing, pharmaceuticals, cosmetics and shampoo. One advantage of this process is the production of PVC water supply pipes to automatically go to the corner, no need to be like the general blow molding process as late finishing. Although there are some narrow MWD grade will be used to improve the surface finish, generally used to wide width MWD grade.
1, PVC water supply pipe interface generally has two ways: rubber ring interface, glue stick interface.
1) rubber ring is in the end of the pipe expanding machine automatically expanded into a socket with a recess, put on the flexible rubber sealing ring, one end of the other pipe without flaring inserted into the sealing sockets installed around the complete connection.
2) glue stick interface mode is at one end of the pipe is expanded into a smooth socket, and the other end of the pipe is not expanded to the outside of the surface and the expansion of the mouth of the table coated with a dedicated glue, and then through the connection to complete the connection.
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2016年9月25日星期日
PVC pipe fittings using special resin materials
PVC pipe fittings using special resin materials
PVC pipe fittings with special resin refers to regular particles in more than 0.90, the main pore properly, the apparent density of 15% higher than the ordinary type, and a good fluidity, easy to melt plasticizing, good mobility, to the satisfaction of the large diameter pipe such as high speed extrusion request, PVC resin production capacity improvement of extruder. Overseas production PVC pipe fittings is widely adopted this kind of resin.
This domestic and resin is still in development and utilization of the start, Tianjin chemical field, South East Su Chlor Alkali Company and Beijing chemical plant has been developed two special resin, although the apparent density is progress, but the existence of VCM residue, the other is still from the processing request gap, especially compared with the overseas finite distance public use resin, otherwise very difficulty. The domestic PVC pipe production plant and research unit, should increase the public PVC pipe resin development efforts, the actual need with pipe processing field, the progress of cooperation itself is also helpful.
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PVC pipe fittings with special resin refers to regular particles in more than 0.90, the main pore properly, the apparent density of 15% higher than the ordinary type, and a good fluidity, easy to melt plasticizing, good mobility, to the satisfaction of the large diameter pipe such as high speed extrusion request, PVC resin production capacity improvement of extruder. Overseas production PVC pipe fittings is widely adopted this kind of resin.
This domestic and resin is still in development and utilization of the start, Tianjin chemical field, South East Su Chlor Alkali Company and Beijing chemical plant has been developed two special resin, although the apparent density is progress, but the existence of VCM residue, the other is still from the processing request gap, especially compared with the overseas finite distance public use resin, otherwise very difficulty. The domestic PVC pipe production plant and research unit, should increase the public PVC pipe resin development efforts, the actual need with pipe processing field, the progress of cooperation itself is also helpful.
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2016年9月21日星期三
Distinction between hard plastics and PVC power cable protection tube
Distinction between hard plastics and PVC power cable protection tube
UPVC material is also mentioned in our daily life of hard plastic from the PVC pipe fittings of the category, but also with a great difference.
Want different plastic products really for our lives and production services on the need to identify differences between the appropriate application of different products. Hard plastic with light, acid and alkali resistant properties, excellent conductive, does not burn, nor fire combustion, no worries. Easy installation, low cost, easy to cut and connect. PVC pipe fittings is a product produced by the processing of poly - chloride B as raw material. The more effective application of raw materials, reduces fuel consumption, can be recovered and converted to other new products or burnt to gain energy.
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UPVC material is also mentioned in our daily life of hard plastic from the PVC pipe fittings of the category, but also with a great difference.
Want different plastic products really for our lives and production services on the need to identify differences between the appropriate application of different products. Hard plastic with light, acid and alkali resistant properties, excellent conductive, does not burn, nor fire combustion, no worries. Easy installation, low cost, easy to cut and connect. PVC pipe fittings is a product produced by the processing of poly - chloride B as raw material. The more effective application of raw materials, reduces fuel consumption, can be recovered and converted to other new products or burnt to gain energy.
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2016年9月20日星期二
Design of PVC plastic drainage pipe fittings
Design of PVC plastic drainage pipe fittings
The use of PVC pipe in daily life is diverse and has a wide range, with the popularization and development of science and technology, more and more scientific design elements are integrated into the PVC plastic line
Plumbing parts manufacturing engineering.
Key material market in the country can be said to be unusually fierce reform of great changes, from the initial steel pipeline, people developed a new generation of green, green and efficient plastic material
Quality pipeline.
It has gradually become the new darling of the market, has brought a wave of sales heatwave, and began to attract more people to join in the manufacturing and development of pipeline industry in China, PVC
Industrial production has added new blood, is a powerful economic strength of the country, has its own industrial productivity.
In the design of PVC pipe drainage pipe should be the basic choice of SC5 or SG4 resin material to refine processing, because the degree of polymerization of this type of chemical substances in about one thousand,
Is the most reasonable and the most safe PVC resin, and began to be widely used.
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The use of PVC pipe in daily life is diverse and has a wide range, with the popularization and development of science and technology, more and more scientific design elements are integrated into the PVC plastic line
Plumbing parts manufacturing engineering.
Key material market in the country can be said to be unusually fierce reform of great changes, from the initial steel pipeline, people developed a new generation of green, green and efficient plastic material
Quality pipeline.
It has gradually become the new darling of the market, has brought a wave of sales heatwave, and began to attract more people to join in the manufacturing and development of pipeline industry in China, PVC
Industrial production has added new blood, is a powerful economic strength of the country, has its own industrial productivity.
In the design of PVC pipe drainage pipe should be the basic choice of SC5 or SG4 resin material to refine processing, because the degree of polymerization of this type of chemical substances in about one thousand,
Is the most reasonable and the most safe PVC resin, and began to be widely used.
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2016年9月19日星期一
Indispensable electrical accessories - PVC junction box
Indispensable electrical accessories - PVC junction box
Now, the decorative selection of the junction box to play a transition effect, the wire inside the wire in the junction box, PVC junction box to maintain the effect of wire box cable connection. Today, PVC junction box is home decoration, one of the important accessories of electrical. PVC junction box includes a box cover and a box body, terminals, connectors, diode, connection line. In the meantime, the diode is a single pass through current. I plant PVC box box cover and the box body is aging, UV resistant to strong anti shine, can be safely used in harsh environment. I plant PVC junction box with waterproof sealing of the planning, insulation protection against electric shock, greatly reducing the security risk factor
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Now, the decorative selection of the junction box to play a transition effect, the wire inside the wire in the junction box, PVC junction box to maintain the effect of wire box cable connection. Today, PVC junction box is home decoration, one of the important accessories of electrical. PVC junction box includes a box cover and a box body, terminals, connectors, diode, connection line. In the meantime, the diode is a single pass through current. I plant PVC box box cover and the box body is aging, UV resistant to strong anti shine, can be safely used in harsh environment. I plant PVC junction box with waterproof sealing of the planning, insulation protection against electric shock, greatly reducing the security risk factor
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2016年9月18日星期日
Main advantages of PVC power tube
Main advantages of PVC power tube
1 light weight: CPVC density is 1350-1500KG/M3, weight is generally similar to the pressure of the 1/10 pipe, steel pipe 1/6, convenient transportation and installation.
2 construction is convenient and has remarkable economic benefits: CPVC high voltage power pipe joint, waterproof sealing ring, bracket and other parts of the composition. Reasonable design and construction, without pouring concrete protective layer, support the use of a combination of links, shorten the construction cycle, no radioactive carcinogens, with significant economic and social benefits.
3 good corrosion resistance: CPVC acid, alkali, salt and other chemical solvents, corrosion, oil is not cracking.
4 high strength, flame retardant and smoke suppression, heat resistance, long life, high voltage power CPVC tube completely overcome the common disadvantages of poor weather resistance of PVC pipe. The strength can replace steel pipe and overcome the corrosion and the steel tube is easy to form a closed magnetic circuit by single core cable of high temperature damage phenomenon; CPVC pipe flame retardant grade was FV-0, which itself does not burn, the fire is out, the oxygen index is more than 40%, the basic heat transfer, thermal expansion coefficient of 6.3*10-5CM/CM is greater than or equal to 93 DEG C VEKA softening temperature C, can be used at a temperature of 105 DEG c;
5 performance price ratio: CPVC pipe is slightly lower than the same cement pressure pipe, steel pipe is 20% lower than similar, comprehensive cost can be reduced by 15%.
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1 light weight: CPVC density is 1350-1500KG/M3, weight is generally similar to the pressure of the 1/10 pipe, steel pipe 1/6, convenient transportation and installation.
2 construction is convenient and has remarkable economic benefits: CPVC high voltage power pipe joint, waterproof sealing ring, bracket and other parts of the composition. Reasonable design and construction, without pouring concrete protective layer, support the use of a combination of links, shorten the construction cycle, no radioactive carcinogens, with significant economic and social benefits.
3 good corrosion resistance: CPVC acid, alkali, salt and other chemical solvents, corrosion, oil is not cracking.
4 high strength, flame retardant and smoke suppression, heat resistance, long life, high voltage power CPVC tube completely overcome the common disadvantages of poor weather resistance of PVC pipe. The strength can replace steel pipe and overcome the corrosion and the steel tube is easy to form a closed magnetic circuit by single core cable of high temperature damage phenomenon; CPVC pipe flame retardant grade was FV-0, which itself does not burn, the fire is out, the oxygen index is more than 40%, the basic heat transfer, thermal expansion coefficient of 6.3*10-5CM/CM is greater than or equal to 93 DEG C VEKA softening temperature C, can be used at a temperature of 105 DEG c;
5 performance price ratio: CPVC pipe is slightly lower than the same cement pressure pipe, steel pipe is 20% lower than similar, comprehensive cost can be reduced by 15%.
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2016年9月17日星期六
Installation instructions of PVC power cable protection tube
Installation instructions of PVC power cable protection tube
PVC pipe fittings is currently more popular in the pipe fittings products, following on the professional manufacturers for everyone to introduce the installation instructions on the PVC pipe fittings.
Saw pipe length according to the measured, and combined with the size of the connecting pipe fittings to determine the layer by layer. Saw pipe tool is suitable for the use of fine tooth saw, cutting knife and pipe cutting machine tools. The fracture surface should be smooth, and there should not be any deformation in the section. The socket part of the bonding medium riffler file available 15o~30o groove. Groove length is generally not less than 3mm, the depth of the groove wall thickness should be 1/3~1/2.
The groove is completed, should be cleared of debris. Socket connection end, should be out of the adhesive with cotton yarn or dry cloth dipped in a little acetone and other cleaning agents to clean. According to the adhesive properties and climate conditions, static to the interface to cure so far. The curing time should be prolonged in winter construction.
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PVC pipe fittings is currently more popular in the pipe fittings products, following on the professional manufacturers for everyone to introduce the installation instructions on the PVC pipe fittings.
Saw pipe length according to the measured, and combined with the size of the connecting pipe fittings to determine the layer by layer. Saw pipe tool is suitable for the use of fine tooth saw, cutting knife and pipe cutting machine tools. The fracture surface should be smooth, and there should not be any deformation in the section. The socket part of the bonding medium riffler file available 15o~30o groove. Groove length is generally not less than 3mm, the depth of the groove wall thickness should be 1/3~1/2.
The groove is completed, should be cleared of debris. Socket connection end, should be out of the adhesive with cotton yarn or dry cloth dipped in a little acetone and other cleaning agents to clean. According to the adhesive properties and climate conditions, static to the interface to cure so far. The curing time should be prolonged in winter construction.
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2016年9月13日星期二
How to produce PVC pipe fittings
How to produce PVC pipe fittings
PVC pipe production process through mixing the raw materials, PVC stabilizers, plasticizers, antioxidants and other accessories, according to the proportion, process successively into high speed mixing machine, the material and mechanical friction material from heating to the set temperature.
In the extruder, a quantitative feeding device, the extrusion volume and add products to ensure stable extrusion, extrusion die part is compacted, melting, mixing of PVC, with subsequent materials by the screw to die, extrusion die is the key part of the tube forming. The vacuum type water tank is used for the shaping and cooling of the pipe, and the vacuum setting water tank is provided with a vacuum system and a water circulation system, which is provided with a water circulation system and a water circulation system. Cutting machine according to the requirements of the length of the trip switch control, automatic cutting, and the delay of the frame, the implementation of water production.
Double rack unloading action is realized by the cylinder through the pneumatic control, reversing erecting a limit device, when the cutting saw cutting tube, pipe to transport, by the time delay after work into the cylinder to achieve unloading action, achieve unloading purpose.
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PVC pipe production process through mixing the raw materials, PVC stabilizers, plasticizers, antioxidants and other accessories, according to the proportion, process successively into high speed mixing machine, the material and mechanical friction material from heating to the set temperature.
In the extruder, a quantitative feeding device, the extrusion volume and add products to ensure stable extrusion, extrusion die part is compacted, melting, mixing of PVC, with subsequent materials by the screw to die, extrusion die is the key part of the tube forming. The vacuum type water tank is used for the shaping and cooling of the pipe, and the vacuum setting water tank is provided with a vacuum system and a water circulation system, which is provided with a water circulation system and a water circulation system. Cutting machine according to the requirements of the length of the trip switch control, automatic cutting, and the delay of the frame, the implementation of water production.
Double rack unloading action is realized by the cylinder through the pneumatic control, reversing erecting a limit device, when the cutting saw cutting tube, pipe to transport, by the time delay after work into the cylinder to achieve unloading action, achieve unloading purpose.
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2016年9月8日星期四
Some principles of general plastic material attention
Some principles of general plastic material attention
Plastic raw materials according to the molecular structure of synthetic resin mainly divided into thermoplastic and thermosetting plastics: for thermoplastic plastic refers to the repeated heating still has the plasticity of plastic: mainly PE/PP/PVC/PS/ABS/PMMA/POM/PC/PA as raw materials. The thermoset plastic mainly refers to a combination of heating and hardening the resin of plastic, like some phenolic and amino plastic plastic.
The main ingredients of plastic raw materials are resin. 2: plastic raw material is made of polymer synthetic resin (polymer) as the main ingredients penetrate various auxiliary materials or additives, in particular temperature, has the plasticity and fluidity under pressure, can be molded into shape and maintain the same shape of material under certain conditions. The plastic raw materials, is made from some oil the most familiar part of PC material is extracted from the oil, the PC material has a gasoline burning time; ABS is made from coal, ABS will show when soot like burn out; POM is produced from natural gas, there will be a POM very smelly smell gas when burned.
A. plastic raw material is heated to expand, the linear expansion coefficient is much larger than the metal;
B. general plastic raw material stiffness than the metal one order of magnitude;
Mechanical properties of C. plastic materials will be significantly decreased in the long time;
D. general plastic raw materials at room temperature and below the yield strength of the long-term stress, will appear permanent deformation;
E. plastic material is very sensitive to the damage of the gap
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Plastic raw materials according to the molecular structure of synthetic resin mainly divided into thermoplastic and thermosetting plastics: for thermoplastic plastic refers to the repeated heating still has the plasticity of plastic: mainly PE/PP/PVC/PS/ABS/PMMA/POM/PC/PA as raw materials. The thermoset plastic mainly refers to a combination of heating and hardening the resin of plastic, like some phenolic and amino plastic plastic.
The main ingredients of plastic raw materials are resin. 2: plastic raw material is made of polymer synthetic resin (polymer) as the main ingredients penetrate various auxiliary materials or additives, in particular temperature, has the plasticity and fluidity under pressure, can be molded into shape and maintain the same shape of material under certain conditions. The plastic raw materials, is made from some oil the most familiar part of PC material is extracted from the oil, the PC material has a gasoline burning time; ABS is made from coal, ABS will show when soot like burn out; POM is produced from natural gas, there will be a POM very smelly smell gas when burned.
A. plastic raw material is heated to expand, the linear expansion coefficient is much larger than the metal;
B. general plastic raw material stiffness than the metal one order of magnitude;
Mechanical properties of C. plastic materials will be significantly decreased in the long time;
D. general plastic raw materials at room temperature and below the yield strength of the long-term stress, will appear permanent deformation;
E. plastic material is very sensitive to the damage of the gap
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2016年9月5日星期一
Advantages and comparison of different pipe fittings
Advantages and comparison of different pipe fittings
In the market to buy water pipes, PVC pipe fittings, stainless steel tubes and other products of different materials for our choice of a wide range of space. In the concrete performance way and the effect is different.
Copper chemical stability, corrosion resistance is very strong, the use of copper water pipes can inhibit bacteria, especially the growth of E. coli, can ensure the sanitation of drinking water. PVC although the installation is more convenient, but easily lead to burst or leakage of the situation, and PP-R and brass varieties can be seamless welding, the price is not cheap, the construction is more convenient.
In fact, in the application without the need for different materials are endless tangle, whether it is PVC or other fittings should pay attention to when purchasing the implementation of standards is smooth, the color of the technical parameters of the corresponding national standards and the appearance of the pipe.
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In the market to buy water pipes, PVC pipe fittings, stainless steel tubes and other products of different materials for our choice of a wide range of space. In the concrete performance way and the effect is different.
Copper chemical stability, corrosion resistance is very strong, the use of copper water pipes can inhibit bacteria, especially the growth of E. coli, can ensure the sanitation of drinking water. PVC although the installation is more convenient, but easily lead to burst or leakage of the situation, and PP-R and brass varieties can be seamless welding, the price is not cheap, the construction is more convenient.
In fact, in the application without the need for different materials are endless tangle, whether it is PVC or other fittings should pay attention to when purchasing the implementation of standards is smooth, the color of the technical parameters of the corresponding national standards and the appearance of the pipe.
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2016年9月4日星期日
PVC gas pipe - the performance of the coal mine gas pipe
PVC gas pipe - the performance of the coal mine gas pipe
PVC gas pipe - the performance of the performance of the coal mine gas pipe performance than ordinary gas pipe requirements to be high, because the use of the special nature of the place, it must have a very high performance in order to be applied in coal mines. Under normal circumstances it adopts double-sided anticorrosive material, corrosion resistance can fully mining the polyethylene material, the tube service life can reach 4 times more than ordinary steel material, even some can be as high as 50 years of life, so that the coal mine gas pipe per year can save a lot of cost of corrosion.
And the safety performance of coal mine gas pipe is higher than that of some ordinary steel, the inner and outer layer of antistatic device, and its ability to withstand the pressure is much higher than ordinary polyethylene pipe, and the coal mine gas pipe completely meets the requirements of CJ/T189-2007 standard, is a qualified pipeline. In addition to its mechanical properties are better, it has a good impact strength and flexibility, can withstand the impact of external shocks, but also does not appear cracking and leakage of the situation.
The fluid properties of coal mine gas pipe, but also save the cost of running, there are some pipes in use process, will produce the scaling phenomenon, resulting in the loss of water, but the inner wall of coal mine gas pipe is very smooth, without fouling, head loss is relatively small. In addition, the construction cost of the coal mine gas pipe is low, more important is the green environmental protection.
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PVC gas pipe - the performance of the performance of the coal mine gas pipe performance than ordinary gas pipe requirements to be high, because the use of the special nature of the place, it must have a very high performance in order to be applied in coal mines. Under normal circumstances it adopts double-sided anticorrosive material, corrosion resistance can fully mining the polyethylene material, the tube service life can reach 4 times more than ordinary steel material, even some can be as high as 50 years of life, so that the coal mine gas pipe per year can save a lot of cost of corrosion.
And the safety performance of coal mine gas pipe is higher than that of some ordinary steel, the inner and outer layer of antistatic device, and its ability to withstand the pressure is much higher than ordinary polyethylene pipe, and the coal mine gas pipe completely meets the requirements of CJ/T189-2007 standard, is a qualified pipeline. In addition to its mechanical properties are better, it has a good impact strength and flexibility, can withstand the impact of external shocks, but also does not appear cracking and leakage of the situation.
The fluid properties of coal mine gas pipe, but also save the cost of running, there are some pipes in use process, will produce the scaling phenomenon, resulting in the loss of water, but the inner wall of coal mine gas pipe is very smooth, without fouling, head loss is relatively small. In addition, the construction cost of the coal mine gas pipe is low, more important is the green environmental protection.
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