Name | Description | |
Security Steel door | Leaf(face) | 0.5mm-1.0mm cold rolled steel panel |
(Exterior door) | frame | 0.8mm-2.0mm cold rolled steel panel |
Security Steel Door Advantages | ||
Raw material | Phosphatized treatment, stable performance, long lasting | |
Infilling | Honeycomb paper: Heat Insulation, | |
Rock wall: Fireproof, Heat Insulation | ||
Fireproof Board: Fireproof, Heat Insulation | ||
Locks | 13 Points locking High Security level | |
Door Sill | Stainless steel, stable performance, Antirust | |
Colors/Surface | Heat-transfer/Polyester powder coated, Customized colors | |
Lead time | 15 Days | |
Customized | Custom sizing & colors, OEM available | |
Warranty | 5 years' product warranty, life long after-sales service | |
Security Steel Door Specification(All in standard size) | ||
Size | 2050x860/960mm(Height x Width) | |
leaf thickness | 50/70/90mm | |
Wall thickness | Customized | |
Swing direction | Leaf & Right | |
Inward & Outward | ||
Load quantity | 120-150pcs/20'FT; | |
270-350pcs/40'HQ |


1. Certification: ISO9001, SGS etc.
2. With strong technical development ability, we can provide high intensity and high ductility steel profiles to meet customers' different requirements.
3. OEM and ODM service is available.


Company Information
Our company is a subsidiary of Sun City Group Co., Ltd. We are mainly concerned with the design, development, manufacture, sales and service of an extensive range of products. After years of development, we have established a competitive edge by fulfilling customers' expectations. Our products include metal entrance doors, interior doors, fireproof doors, etc. We enjoy large market shares in more than 30 countries and regions around the world. Our company has obtained many certificates, such as ISO9001:2000 Quality Management System Certificate, China National Inspection-free Product Certificate, etc.
"Providing our customers with perfect products, competitive price and excellent service" is our long-term pursuit. We sincerely hope to establish cooperation with overseas customers to create a win-win situation based on mutual benefit.

Our Advantages
1. Rich production experience in manufacturing aluminum profile, including all kinds of surface treatment and deep processing
2. Advanced producing equipment from Germany, first-class technology
3. High quality system, strictly inspection during production and whole inspection before package
4. Strict quality assurance and inspection measures will never let any imperfect products be out of our company
5. Manufacture according to GB, QUOLANOD, JIS or other International specifications.
6. Strong R&D team and over 100 national patents. Any queries from anywhere will be treasured and replied promptly.
7. We cooperate with world's top design institution to manufacture products with artistry and utility.

FAQ
Q: What kind of door do you produce?
A: We produce steel door, PVC door, wood door, aluminum door, steel stainless door, etc.
Q: What is your delivery time?
A: 15-25 days after the deposit received and all details confirmed.
Q: Can we use our own logo?
A: Yes, your own logo is available.
Q: What is your port of shipment?
A: Ningbo port and Shanghai port.
Q: What is your payment term?
A: We accept T/T, L/C and Western Union.
Q: What is the minimum order quantity?
A: One set sample is available.
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Name | Description | |
Security Steel door | Leaf(face) | 0.5mm-1.0mm cold rolled steel panel |
(Exterior door) | frame | 0.8mm-2.0mm cold rolled steel panel |
Security Steel Door Advantages | ||
Raw material | Phosphatized treatment, stable performance, long lasting | |
Infilling | Honeycomb paper: Heat Insulation, | |
Rock wall: Fireproof, Heat Insulation | ||
Fireproof Board: Fireproof, Heat Insulation | ||
Locks | 13 Points locking High Security level | |
Door Sill | Stainless steel, stable performance, Antirust | |
Colors/Surface | Heat-transfer/Polyester powder coated, Customized colors | |
Lead time | 15 Days | |
Customized | Custom sizing & colors, OEM available | |
Warranty | 5 years' product warranty, life long after-sales service | |
Security Steel Door Specification(All in standard size) | ||
Size | 2050x860/960mm(Height x Width) | |
leaf thickness | 50/70/90mm | |
Wall thickness | Customized | |
Swing direction | Leaf & Right | |
Inward & Outward | ||
Load quantity | 120-150pcs/20'FT; | |
270-350pcs/40'HQ |


1. Certification: ISO9001, SGS etc.
2. With strong technical development ability, we can provide high intensity and high ductility steel profiles to meet customers' different requirements.
3. OEM and ODM service is available.


Company Information
Our company is a subsidiary of Sun City Group Co., Ltd. We are mainly concerned with the design, development, manufacture, sales and service of an extensive range of products. After years of development, we have established a competitive edge by fulfilling customers' expectations. Our products include metal entrance doors, interior doors, fireproof doors, etc. We enjoy large market shares in more than 30 countries and regions around the world. Our company has obtained many certificates, such as ISO9001:2000 Quality Management System Certificate, China National Inspection-free Product Certificate, etc.
"Providing our customers with perfect products, competitive price and excellent service" is our long-term pursuit. We sincerely hope to establish cooperation with overseas customers to create a win-win situation based on mutual benefit.

Our Advantages
1. Rich production experience in manufacturing aluminum profile, including all kinds of surface treatment and deep processing
2. Advanced producing equipment from Germany, first-class technology
3. High quality system, strictly inspection during production and whole inspection before package
4. Strict quality assurance and inspection measures will never let any imperfect products be out of our company
5. Manufacture according to GB, QUOLANOD, JIS or other International specifications.
6. Strong R&D team and over 100 national patents. Any queries from anywhere will be treasured and replied promptly.
7. We cooperate with world's top design institution to manufacture products with artistry and utility.

FAQ
Q: What kind of door do you produce?
A: We produce steel door, PVC door, wood door, aluminum door, steel stainless door, etc.
Q: What is your delivery time?
A: 15-25 days after the deposit received and all details confirmed.
Q: Can we use our own logo?
A: Yes, your own logo is available.
Q: What is your port of shipment?
A: Ningbo port and Shanghai port.
Q: What is your payment term?
A: We accept T/T, L/C and Western Union.
Q: What is the minimum order quantity?
A: One set sample is available.
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Roller bearing, one of the two members of the class of rolling, or so-called antifriction, bearings (the other member of the class is the Ball Bearing). Like a ball bearing, a roller bearing has two grooved tracks, or races, but the balls are replaced by rollers. The rollers may be cylinders or truncated cones. Only radial loads (i.e., loads perpendicular to the axis of rotation) can be carried when the rollers are cylindrical, but with conical rollers both radial and thrust, or axial, loads (i.e., ones parallel to the axis of rotation) can be carried. A needle bearing has cylindrical rollers that are relatively slender and completely fill the space between the races; in many cases the inner race is dispensed with. Because there is line contact between a roller and the races, while in a ball bearing there is point contact, in a given space a roller bearing can carry a greater radial load than a ball bearing.
Roller bearings are used in all main shaft and auxiliary drive shaft applications to support pure radial load, and allow for axial shaft elongation due to temperature changes with no additional load effect on the bearing. They are usually located at the ends of the turbine and compressor shafts and are often mounted in a housing, but separated from it by a layer of pressurized oil known as a squeeze film damper.
In many cases, instead of having a separate inner race for roller bearings, the [inner race" is an integral part of the shaft or stub shaft. This reduces complexity, weight, and build-up of concentricity tolerances. Overall, this is cost effective, but the cost of replacement or repair is likely to be higher than for separate inner races.
Roller Bearing,Self-Aligning Roller Bearing,Double Row Roller Bearing,Neddle Roller Bearing
Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearing.com