Company Profile
Songhe Auto Parts Co., Ltd. is a comprehensive enterprise integrating spark plug production, spark plug equipment production & design, and auto parts sales.
Our spark plug production factory was established in 1988. With rich development experience and multiple patents, we offer a complete range of spark plug models, covering various fields such as automobiles, motorcycles, small machinery, and generators.
Our spark plug equipment manufacturing factory is a development - oriented company dedicated to the refinement of spark plug equipment. We conduct special research and inventions on spark plug equipment, enabling equipment purchasers to use the equipment accurately and quickly while ensuring product qualification rates. It is the best choice and partner for zero - based spark plug manufacturers.
In terms of auto parts sales, our main sales scope is auto vulnerable parts, such as filters, windshield wipers, brake pads, and automotive headlights.
We are committed to providing high - quality products and services, and look forward to building long - term partnerships with customers at home and abroad.
Our History
1998
Foundation
When the company was established, to motorcycle spark plug as the main production products
2004
Transformation
Company expands to produce car spark plugs in Laizhou factory, increasing production capacity and efficiency to meet automotive market demand. Important move to expand business and increase revenue.
2008
Products Upgrade
The company has successfully researched and mass-produced precious metal spark plug products
2014
Equipment upgrade
The company strengthened its development team, accelerated research and development of new products, initiated multi-domain product development, and updated its equipment.
2018
International business
We have established a new trade team to develop international business through channels such as global exhibitions and some online platform.
2020
Production capacity improvement
The company built a new factory and introduced fully automated equipment, which doubled production output.
2022
Brand internationalization
Company Advantages
Full automation of equipment
Advanced automation equipment, the introduction of Japan's advanced technology, professional customized equipment, fully adapt to the production of spark plug products. The company has a total of 8 production lines of hot and cold packaging equipment, with a daily output of 50,000 spark plugs.
01
Product customization
In addition to the common spark plug products on the market, the company can also customize products, we have perfect design and development capabilities
02
Comprehensive inspection
Our company has the most comprehensive of the spark plug detection system equipment, including raw material strength, hardness, testing equipment, raw material granularity, testing equipment, raw materials, the internal structure detection equipment, anti-aging test rig, such as seismic performance test bench, and a series of experiment system powerful logistics cooperation, to ensure our goods delivered to the customer on time, The transportation process ensures the safety of the product.
03
Transportation Security
Strong logistics cooperation, to ensure that our goods delivered to customers on time, transportation process to ensure the safety of products.
04
Company qualification and certificate
Enterprise qualification
ISO9000 /16949 Authentication Certification
Patent licence
Product testing
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K5RTCU-11 Type Spark plug Test Report |
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characteristic |
technology demands |
test samples |
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A |
B |
C |
D |
E |
F |
G |
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3.2 |
ordinary characteristics (appearance check) |
no visible cracks, deformation or erosion; correct label. |
OK |
OK |
OK |
OK |
OK |
OK |
OK |
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3.3 |
size |
internal |
0.9∽1.1mm |
0.92 |
0.91 |
0.94 |
0.92 |
0.91 |
0.94 |
0.92 |
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screw thread |
M14X1.25-6e |
OK |
OK |
OK |
OK |
OK |
OK |
OK |
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screw thread length |
19±0.2mm |
18.93 |
18.92 |
18.94 |
18.93 |
18.92 |
18.94 |
18.93 |
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hexagonal |
15.73∽16mm |
15.8 |
15.83 |
15.82 |
15.4 |
15.8 |
15.83 |
15.82 |
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flange outer diameter |
Φ19max |
18.58 |
18.56 |
18.59 |
18.58 |
18.56 |
18.56 |
18.59 |
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Outer diameter of sealing ring |
≤19mm |
18.23 |
18.29 |
18.30 |
18.29 |
18.30 |
18.29 |
18.30 |
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Thickness of sealing ring |
1.4 ∽2.0mm |
1.84 |
1.85 |
1.88 |
1.84 |
1.85 |
1.88 |
1.84 |
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Nut size |
Φ6.3∽Φ6.4mm |
6.34 |
6.34 |
6.34 |
6.34 |
6.34 |
6.34 |
6.34 |
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Insulator size |
Φ10.5mm |
10.38 |
10.36 |
10.38 |
10.36 |
10.38 |
10.36 |
10.38 |
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3.7.1 |
restriction |
3∽12KΩ |
4.47 |
4.61 |
4.72 |
4.92 |
5.5 |
5.56 |
4.22 |
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3.8 |
Resistance aging test |
rate of change -40∽25% |
+12% |
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3.4.1 |
Mechanical strength of shell |
Shell moment strength> 60N.m |
>70 |
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3.4.2 |
Tensile strength of screw |
strength of extension> 400±10N.m, no damage |
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>980 |
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3.4.3 |
flexure strength |
bend 15N.m , no damage |
OK |
OK |
OK |
OK |
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3.4.4 |
seismic performance |
no abnormal,does not affect the following tests |
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OK |
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3.5 |
air impermeability |
< 2 cm3/min. |
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0 |
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3.7.2 |
voltage resistance |
30KV cause no damage |
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OK |
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3.6 |
resistance to heat shocks |
no breaks, cracks or deforamtion |
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OK |
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3.7.3 |
Insulation resistance at room temperature |
at least 100 W |
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>500 |
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3.7.4 |
Insulation resistance at high temperatures |
at least 10MW |
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110 |
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3.9 |
Thermal stability of resistance |
The resistance change rate at 150℃ within 2 hours is -40 to 25% |
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The resistance change rate at room temperature is -10 to 10% |
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The resistance change rate at 300℃ within 20 minutes is -25 to 25% KΩ |
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Planning and prospects
Guarantee product quality and innovate spark plugs suitable for more fields
Improve the domestic market share and expand the international market
Recruit talents and improve efficiency of the management team
In the future economic and technological competition, Qinglong company strives to be the leader of the industry.