How to Select Gas Equipment
KAIGEN GAS EQUIP.
ONLY DO PROFESSIONAL!
our KAIGEN
our LEO
Other Inferior Brand
Brand Positioning
High-quality, reliable and worry-free products.
Meet the needs of mass high-end market, niche market and customization.
Provide products with reliable quality and reasonable price.
Products are manufactured for the mass mid-range market.
The understanding of the brand is limited to the design of words and graphics, without the concept of brand positioning. Products are unable to enter the high-end and mid-range markets.
Brand Mission
Resolutely maintain the brand image of users and provide products with worry-free quality.
Meet the rational needs of users and moderately reduce the cost of customers purchasing and using gas equipment.
There is no concept of brand mission. Believe in the creed of "low price is competitive". Other producers cannot understand why the prices of inferior brands are always lower than the manufacturing costs.
Brand Concept
Produce with high standard and strict requirement.
Respect life. Do a good job in product and service research and development. Meet the high standards and high reliability requirements of the market.
Products meet standards requirement.
Increase product categories and improve service levels while meeting brand positioning requirements.
Poor product quality.
Without R&D capabilities, can only increase their product categories and the number of sales personnel in mature markets for the purpose of profit.
Product Safety And Stability
Excellence.
Goal: high quality, reliable, worry-free.
High market recognition and good customer reviews.
Good.
Good customer reviews.
Poor.
Product quality, safety and stability cannot be guaranteed. For example, the product heights and verticalities are often different.
Whether To Accept Customer's Request That Does Not Meet Production Standards Or Brand Positioning?
Will not accept.
Will not accept.
Accept.
No concept of brand positioning.
Does Each Product Have To Be Certified By A Third-Party Inspection Agency To Ensure That The Production And Quality Meet The Standards?
Yes.
Regardless of whether the customer requires it or not, each product must be inspected by a third-party inspection agency to verify that the production and quality meet the standards. Products that have not been certified by a third-party agency or that fail the certification shall not be shipped.
According to customer requirements.
According to customer requirements.
Whether Wages And Insurance Premiums Are Paid In Accordance With Legal Requirements?
Yes.
The employee benefits are excellent. People are proud to work in the company.
Yes.
The employee benefits are good.
No. Employee benefits are average.
The wage system is mainly piece-rate. If product sales are poor, employees are given holidays. It is also common for the wages paid to be lower than the minimum wage stipulated by law, especially for new employees.
A considerable number of employees are not insured by the company in accordance with the law, including new employees. And try to pay as little insurance premium as possible for each insured employee.
Operation Staffing And Training
The operating staff is adequate, their salaries are relatively high, and the workforce is stable. In order to achieve safe production and quality control, the operating staff corresponds to the operating process one by one (one person is responsible for only one process, or multiple people are responsible for one process but the division of labor and responsibilities are clear), and has received standardized and strict safety operation training.
The staffing is relatively sufficient, the workforce is appropriately streamlined, and the workforce is relatively stable. Workers can only start work after passing the training.
The staffing is insufficient, and the workers only receive simple training, and even no training for unimportant tasks.
The workers are paid by piecework, and their salary income is very unstable. One person needs to work in multiple positions to keep the workshops running. The workforce is unstable, and the recruitment of workers needs to be carried out continuously.
Production Safety Status
A sound safety production system has been established, the safety production responsibility system has been implemented, safety production management personnel are fully equipped, and safety production requirements are strict.
Enterprises are ashamed of safety production accidents, and relevant personnel, especially the top leaders, must be held accountable.
A relatively complete production safety system has been established and the production safety responsibility system has been implemented.
After a production safety accident occurs, the relevant personnel will be held accountable.
The safety production system and responsibility system remain only on paper. Small safety accidents occur frequently, and claims for compensation due to safety production accidents are very common.
Quality Control System, Personnel And Equipment Configuration
Have established a sound quality control system with complete personnel and equipment. Strictly follow the standard requirements for production and testing. The production and testing requirements for products are higher than the standards.
Have established a sound quality control system with complete personnel and equipment. Strictly follow the standard requirements for production and testing.
The quality control system is imperfect, some quality control systems remain only in documents, quality control staff are insufficient, and testing equipment is often idle. For example, customers often find that valves or accessories on the product are not installed and tightened.
Whether To Sell Semi-Finished Or Untested Products?
Responsible for quality and do not sell semi-finished and untested products.
Responsible for quality and do not sell semi-finished and untested products.
Semi-finished and untested products are sold for profit.
After-sales Service
Equipped with a professional after-sales service team. Proactively track and solve the problems faced by customers after customers have provided feedback on their after-sales service needs. Excellent product quality, mature management system, standardized after-sales service, so the after-sales cost is low.
Provide after-sales service. Proactively solve the problems faced by customers after customers have provided feedback on their after-sales service needs.
After-sales service personnel are not provided for the purpose of reducing costs. After-sales service is mainly coordinated and completed by individual sales personnel with little power and authority. There is no standardized process, and the after-sales results depend only on the individual person in charge of the company. After-sales costs are high. In order to reduce costs, reducing the number of customer claims and feedback on quality issues is used as the performance evaluation content of individual sales personnel, rather than systematically and fundamentally solving problems. Sales personnel are often forced to "sacrifice" their own personal interests to make up for the losses of customers.
Are Able To Produce Billet-pierced Cylinders?
Yes.
Have sufficient capacity to produce billet-pierced cylinders, which are difficult to manufacture. The billet-pierced cylinders have high market recognition, which can offset the high cost of billet-pierced cylinders production.
No.
No.
Suitable For High Purity Gases Where The Cylinders Need To Be Ground, Electroplated Or Electrochemically Polished?
Very applicable.
Not recommended.
Not applicable.
Raw Material Selection
Use high-quality and stable seamless steel pipes, billets and other consumables.
Use thicker wall and better-quality seamless steel pipes or billets to ensure cylinder quality and safety.
Use seamless steel pipes and other consumables of medium quality and stability that meet standard requirements.
Use low-priced or even the lowest-priced seamless steel pipes and other consumables.
Use seamless steel pipes with thin walls and poor quality.
Selection Of Valves And Other Accessories
Choose durable valves and accessories made of high-quality materials, bursting discs and high-purity PTFE or PCTFE sealing gaskets. Reject valves and accessories produced by low-quality or even unqualified small workshops.
Be able to produce high-quality customized valves and accessories.
Can provide valves that have passed third-party testing and certification (such as TPED certification).
The thread parameters of valves and accessories meet standard requirements.
Consider the cost-effectiveness and choose valves and accessories with good quality and durability.
The thread parameters of valves and accessories meet the standard requirements.
In order to reduce the selling price and improve competitiveness, cheap, fragile and non-durable valves and accessories are used.
It is often the case that the thread parameters of valves or accessories do not meet the standard requirements.
Whether To Perform Inner Shot Blasting?
The filling and use of gas cause disturbance of the gas in the cylinder, which can easily cause rust and debris in the cylinder to block valves and accessories, making the cylinder unusable (There is pressure in the cylinder. In order to avoid impact damage, valves and accessories cannot be loosened at will, nor can be removed and disassembled at will). In addition, rust or debris in the cylinder will affect the quality and flow of filled gas. So inner shot blasting is very important.
The inner wall of each cylinder must be shot blasted at least twice with corresponding operating specifications (such as inner shot blasting time, etc.). The inner wall of the cylinder is bright and has no rust spots.
Attach great importance to inner shot blasting. Inner wall of every cylinder is shot blasted. The inner wall is bright and has no rust spots. The time or frequency of inner shot blasting can be increased according to customer requirements.
Whether to perform inner shot blasting depends on customer requirements and is charged at a high cost. The inner shot blasting time is short, and rust spots can be seen everywhere on the inner wall after shot blasting.
The rust and oxide scale on the inner wall of the cylinder which is not internally shot blasted is be removed by knocking the cylinder upside down and inserting a pressurized air gun into the cylinder to impact and discharge the water in the cylinder after the water pressure test.
Inner Surface Test
Have established a complete quality control system with complete personnel and equipment. The inner surface of each cylinder is tested strictly in accordance with standard requirements.
Have established a complete quality control system. The inner surface of each cylinder is tested strictly in accordance with standard requirements.
Only the inner surface of the steel cylinder whose inner wall has been shot blasted is inspected, and the inspection content is only to see if there is any debris that has fallen off.
Whether The Cylinder Thread Meets The Standard
Meets the standards.
Meets the standards.
In order to avoid the situation where the cylinder thread does not match the valve or accessory thread, the valve and accessory threads need to be measured before the cylinder is produced, which prolongs the production time, especially when the valve or accessories need to be purchased from outside.
Non-destructive Test
A complete quality control system has been established with complete personnel and equipment. Conduct non-destructive testing on each cylinder in strict accordance with standard requirements.
A complete quality control system has been established. Each cylinder is subjected to non-destructive testing in strict accordance with standard requirements.
Only one nondestructive test is conducted for multiple batches of steel cylinders produced from one furnace or batch of steel pipes. If customers request a nondestructive test report, customers have to pay a high fee. The test is only conducted after the customer agrees to pay the fee, or even without conducting the test and directly fabricating the test data (especially when the customer requests the nondestructive test report after the goods leaving the factory).
Hardness Test
The complete quality control system has been established with complete personnel and equipment. Hardness tests are carried out on each cylinder in strict accordance with standard requirements.
The complete quality control system has been established. Hardness tests are carried out on each cylinder in strict accordance with standard requirements.
Only one hardness test is performed on multiple batches of steel cylinders produced from one furnace or batch of steel pipes.
Water Pressure (Or Hydraulic Pressure) Test
Have established a complete quality control system with complete personnel and equipment. Conduct external or internal water pressure test on each cylinder in strict accordance with standard requirements.
Have established a complete quality control system. Each cylinder is subjected to external or internal water pressure test in strict accordance with standard requirements.
Only the internal water pressure test equipment is available. Impossible to carry out the external water pressure test as required by the standard, especially for steel cylinders produced using the tempering heat treatment process.
Is Dried After The Water Pressure Test?
Yes.
Use hot steam to dry the inside of the cylinder.
Yes.
Use hot steam to dry the inside of the cylinder.
No.
After the hydraulic test, the cylinders are directly transferred to the inner shot blasting or plastic spraying process.
Air Tightness Test
A complete quality control system has been established with complete personnel and equipment. Each cylinder is strictly tested for air tightness in accordance with standard requirements. The pressurization rate and holding time meet the standard requirements.
A complete quality control system has been established. Each cylinder is strictly tested for air tightness in accordance with standard requirements. The pressurization rate and holding time meet the standard requirements.
Each cylinder is tested for air tightness, but the pressurization rate is fast and the pressure holding time is lower than the standard requirements.
Mechanical Properties Test After Heat Treatment (Tensile, Impact, Cold Bending, Flattening Test, Etc.)
The complete quality control system has been established with complete personnel and equipment. Mechanical properties tests after heat treatment are carried out strictly in accordance with standard requirements. Tested samples are retained according to standard regulations.
The complete quality control system has been established. Mechanical properties tests after heat treatment are carried out strictly in accordance with standard requirements. Tested samples are retained according to standard regulations.
One cylinder must be scrapped for each batch of cylinders to undergo mechanical property test after heat treatment. The cost is high, so only one mechanical property test is conducted for multiple batches of cylinders produced from one furnace or batch of steel pipes. Under the condition of long-term normal production, no new tested samples are stored into the cabinet which keeps mechanical property tested samples.
Hydraulic Burst Test
Have established a complete quality control system with complete personnel and equipment. Hydraulic burst tests are carried out strictly in accordance with standard requirements. The tested cylinders are stored in accordance with standard regulations.
Have established a complete quality control system. Hydraulic burst tests are carried out strictly in accordance with standard requirements. The tested cylinders are stored in accordance with standard regulations.
One cylinder must be scrapped for each batch of cylinders to undergo hydraulic burst test. The cost is high, so only one hydraulic burst test is performed on multiple batches of cylinders produced from one furnace or batch of steel pipes. Under the condition of long-term normal production, no new cylinders after the burst test are stored in the burst tested cylinder retention area.
Bottom Anatomy Test
In compliance with standard requirements. Dare to send customers drawings with cylinder bottom sizes and wall thicknesses marked, and accept customers' tests and questions.
In compliance with standard requirements. Dare to send customers drawings with cylinder bottom sizes and wall thicknesses marked, and accept customers' tests and questions.
There are often situations where standard requirements are not met. The drawings provided to customers do not include the sizes and wall thicknesses of the cylinder bottom. Dare not accept customers' tests and questions. Fear of claims from customers.
If Test Failed, Number Of Times Of Re-heat Treatment, Repair And Re-test
No more than twice.
No more than twice.
If it is considered safe for use, there is no limit on the number of times.
What To Do If Re-test Still Fails?
If the number of re-tests reaches the upper limit specified in the standard and the re-tests are still unqualified, the entire batch of cylinders will be scrapped. There are dedicated quality control personnel to track and supervise the entire scrapping process.
If the number of re-tests reaches the upper limit specified in the standard and the re-tests are still unqualified, the entire batch of cylinders will be scrapped.
If batch test item fails: Cylinders that are considered safe for use, such as batch that fails the bottom anatomy test, are sold normally.
If piece test item fails: Cylinders that are considered safe to use and have defects that are not easy to be found, such as cylinders with unqualified verticality and pits on the inner surface, are sold normally. Cylinders that are considered safe to use and have defects that are easy to be found, such as cylinders with more, larger, and deeper pits on the outer surface, are sold at reduced prices. Cylinders that are considered unable to be used normally but can be utilized in production, such as cylinders with unqualified threads, shoulders or bottoms, have the unqualified parts cut off and used to produce small-volume cylinders.