Heavy-Duty Ductile Iron Manhole Cover with Customization Features

• Customization: Available
• After-sales Service: Customization
• Warranty: 2 Years
• Model NO.: M10
• Material: Steel
• Shape: Round
• Certification: ISO, IATF 16949
• Processing: Precision Casting
• Surface Treatment: Powder Coated/Painting/Sandblasting
• Surface Roughness: Ra0.8~Ra12.5
• Pattern: Customization
• Size: Standard and Non-Standard
• Lead Time: 20-30 Days
• Heat Treatment: Quench and Temper
• Transport Package: Customize
• Specification: According to product specifications
• Trademark: Customer Demands
• Origin: China
• Production Capacity: 50000

Product Description

Product Description

Name	Size (mm)	Unit	Weight (kg)	Remarks
Manhole Cover for Water Meter	400*600	Set	20	With frame
Manhole Cover for Water Meter	600*600	Set	40	With frame
Manhole Cover for Water Meter	630*1080	Set	90	With frame
Double-lid Water Meter Manhole Cover	400*600	Set	30	With frame
Double-lid Water Meter Manhole Cover	1000*500	Set	55	With frame
Double-lid Water Meter Manhole Cover	1300*480	Set	70	With frame
Double-lid Water Meter Manhole Cover	1500*450	Set	80	With frame
Single Grating	300*500	Piece	7	For greening and bathhouse use
Single Grating	400*600	Piece	15	For drainage ditch
Single Grating	400*600	Piece	20
Single Grating	400*600	Piece	25
Complete Set of Gratings	400*400	Set	22	For indoor installation under 10 tons
Complete Set of Gratings	400*600	Set	30
Complete Set of Gratings	400*700	Set	40
Complete Set of Gratings	450*750	Set	30
Complete Set of Gratings	450*750	Set	35
Complete Set of Gratings	450*750	Set	40
Complete Set of Gratings	450*750	Set	50
Complete Set of Gratings	450*750	Set	60
Complete Set of Gratings	700*700	Set	45
Complete Set of Gratings	700*1500	Set	75

Name	Diameter (mm)	Unit	Weight (kg)	Remarks
Round Manhole Cover	600	Set	30	The patterns and central characters of the manhole cover can be customized according to the user's needs, such as for sewage, rainwater, fire protection, water supply, etc.
Round Manhole Cover	600	Set	35
Round Manhole Cover	600	Set	60
Round Manhole Cover	625	Set	30
Round Manhole Cover	630	Set	30
Round Manhole Cover	640	Set	75
Round Manhole Cover	650	Set	35
Round Manhole Cover	650	Set	40
Round Manhole Cover	650	Set	70
Round Manhole Cover	670	Set	35
Round Manhole Cover	670	Set	40
Round Manhole Cover	680	Set	40
Round Manhole Cover	680	Set	60
Round Manhole Cover	680	Set	70
Round Manhole Cover	690	Set	50
Round Manhole Cover	700	Set	45
Round Manhole Cover	700	Set	50
Round Manhole Cover	700	Set	70
Round Manhole Cover	700	Set	75
Round Manhole Cover	740	Set	80
Round Manhole Cover	740	Set	85
Round Manhole Cover	740	Set	105
Round Manhole Cover	760	Set	120
Double - layer Round Manhole Cover	700	Set	60
Double - layer Round Manhole Cover	700	Set	70
Double - layer Round Manhole Cover	900	Set	100

Detailed Photos

Anti-noise
The seamless integration of the manhole cover with its frame is achieved through precision machining. This ensures that the contact surfaces fit impeccably, effectively eliminating any potential for unusual noises.

Anti-slip
The surface of the manhole frame is adorned with diamond-shaped block patterns. This innovative design features a structural mode where interconnected rings enhance stability. Furthermore, T-shaped protrusions are strategically placed on the ring openings to significantly boost the friction coefficient. This ingenious approach ensures that after installation on auxiliary roads, the friction between the asphalt base material and the ring opening is maximized, enhancing safety and reliability.

Anti-displacement
The manhole frame's stability during construction is secured by anchor bolts, as indicated by the small round holes which serve as the fixing function. This robust anchoring prevents any misalignment of the manhole frame opening, even under the heavy rolling of a road roller, thereby ensuring compliance with construction standards.

Anti-falling
Designed with safety in mind, the new five-prevention manhole cover incorporates an internal anti-falling grid. This ingenious feature is engineered to prevent any person or object from unintentionally falling through the manhole in the unlikely event that the cover is displaced, offering peace of mind and enhanced safety.

Anti-theft
Ingeniously featuring an anti-theft hidden box and an opening folding plate situated beneath the manhole cover and frame, this advanced design replaces traditional anti-theft chains. By thoroughly addressing the issues of rust from cavitation and water erosion, this solution offers robust protection against theft, ensuring longevity and security.

Company Profile

Welcome to Qingdao Starise Metal Technology Co., Ltd., where cutting-edge engineering meets global trade excellence. As a pioneering industry and trade integration enterprise, we specialize in the dynamic fields of research, development, and global trade of precision casting parts. With over three decades of rich experience, our company boasts a state-of-the-art production facility sprawling across 47,000 square meters, including 10,000 square meters dedicated to high-standard production workshops. Our annual production capacity exceeds 30,000 tons of precision cast steel parts, affirming our commitment to quality and efficiency. Our meticulously crafted products reach over 20 countries across Europe, America, Asia, and beyond, making us a trusted name in the international market.


Our History

1. Founding Period (1995-1998):
In 1996, nestled in Pingdu City, Qingdao, China, Qingdao Starise Metal Technology Co., Ltd. embarked on its journey with a mission to deliver unparalleled precision casting solutions tailored for the agricultural machinery and automotive axle sectors. During these formative years, our focus was on meticulously crafting small-scale precision castings, utilizing the time-honored silica gel precision casting technology to ensure the highest standards of quality.

2. Technological Accumulation and Expansion (1998-2014):
The year 1998 marked a pivotal shift as we embraced advanced investment casting and sand casting technologies, empowering us to produce medium and large-scale precision castings. Achieving ISO9001 certification in 2006 underscored our dedication to delivering consistent quality. Between 2009 and 2014, we embarked on an ambitious expansion, augmenting our production facilities with multiple new lines and refining our casting processes. This strategic growth enabled us to cater to a broad spectrum of multi-batch and customized product requirements, setting new benchmarks in production capacity.

3. Brand Marketing (2016-2020):
In 2016, our strategic focus shifted towards brand elevation, actively participating in both domestic and international industry exhibitions to bolster brand recognition. By 2017, we had successfully expanded our footprint in the global market, fostering enduring relationships with overseas patrons. Our relentless pursuit of innovation led to the development of multiple patented technologies, significantly enhancing product precision and quality by 2020.

4. Technological Innovation and Sustainable Development (2018-2024):
Our commitment to innovation took a leap forward in 2018 with the establishment of a dedicated R&D center, pushing the boundaries of new materials and processes. In 2019, we pioneered an eco-friendly precision casting process, minimizing pollution emissions and elevating the quality of our castings by reducing surface and internal defects. Our technological breakthroughs were recognized nationally in 2020, as we proudly earned the title of a high-tech enterprise.

5. Intelligent Manufacturing and Future Vision:
Adapting swiftly to the challenges of the global pandemic in 2019, we refined our market strategies, fortifying our online marketing and service capabilities to ensure consistent business growth. In 2021, we embarked on an intelligent manufacturing journey, seamlessly integrating automation and information technology to optimize production efficiency and management prowess.

6. Looking Ahead:
Our sights are set firmly on the future as we steadfastly adhere to our philosophy of innovation-driven development. With unwavering dedication, we aspire to ascend to unparalleled heights and secure a preeminent position in the global precision casting industry.

Materials We Cast

Material	Carbon Steel	Ductile Iron	Alloy Steel	Stainless Steel	Manganese Steel
Material Grade/Designation	ZG200-400 ZG230-450 ZG270-500 ZG310-570 ZG340-640 Q235	QT350-22L QT400-18 QT400-18L QT450-10 QT500-7 QT600-3 QT700-2 QT800-2 QT900-2 QTD800-10 QTD900-8 QTD1050-6 QTD1200-3 QTD1400-1	ZG20Mn, ZG30Mn ZG40Mn, ZG20Mn2 ZG35CrMnSi, ZG40Cr ZG35CrMo, ZG42CrMo AH36,EH36,FH36 Q420qE,Q500qE 16MnDR 09MnNiDR ZGD410-620 ZGD535-720 ZGD650-830 ZGD730-310 ZGD840-1030 ZGD1030-1240 ZGD1240-1450	06Cr19Ni10 022Cr19Ni10 06Cr17Ni12Mo2 022Cr17Ni12Mo2 06Cr18Ni12Mo2Cu2 015Cr21Ni26Mo5Cu2 12Cr13 30Cr13 68Cr17 022Cr12 10Cr17 019Cr19Mo2NbTi 022Cr23Ni5Mo3N 022Cr25Ni7Mo4N 05Cr17Ni4Cu4Nb 07Cr15Ni7Mo2AL	ZGMn13-1 ZGMn13-2 ZGMn13-3 ZGMn13Cr2 Q355B Q460C 30Mn2Cr10 40Mn18Cr3 ZGMn18Cr2
Standard	AISI - American Iron and Steel Institute ASTM - American Society for Testing and Materials DIN - Deutsches Institut für Normung BS - British Standards ANSI - American National Standards Institute JIS - Japanese Industrial Standards AFNOR - Association Française de Normalisation AS - Standards Australia ASME - American Society of Mechanical Engineers EN--European Norm GB--National Standard Chinese
Note	Apart from the above materials, we can cast based on customers' specifications

Certifications

Packaging & Shipping

Packaging

1. Rust Prevention Treatment: Our cast steel components undergo advanced anti-rust treatment. The surface is meticulously sprayed or smeared with premium rust preventives, creating a robust and dense anti-rust film. This ensures exceptional protection against rust during transit and storage.
2. Buffer Protection: To safeguard components vulnerable to impacts, we employ superior buffer materials such as foam boards and sponges. These materials are expertly wrapped around the parts, providing unmatched protection against collision damage during transit.
3. Outer Packaging: Our small cast steel parts are meticulously encased in strong wooden boxes, with interior stuffing to prevent movement during transit. Larger components are securely anchored using customized metal or wooden frames. If required, we also utilize container transportation to uphold the highest standards of safety during transit.

Shipping

1. Logistics Selection: We pride ourselves on our strategic alliances with renowned logistics partners. Depending on customer requirements and product specifics, we offer an array of transportation options such as road, rail, sea, and air freight. This ensures your goods are delivered promptly and safely.
2. Delivery Timeliness: For standard orders, shipment occurs within 30 working days post-production and quality checks. For urgent needs, we offer negotiable expedited delivery, prioritizing both production and shipping to meet your tight deadlines.
3. Logistics Tracking: Stay informed with our real-time tracking service. Using the order or logistics tracking number, you can easily monitor the status, current location, and expected arrival of your goods on our official website or through our logistics partner's platform.

FAQ

1. Casting process optimization category
Q: How to solve the problem of cracking in thin-walled die-casting products?
A: Suggest controlling the proportion of recycled materials to ≤ 30%, calculating the mold retention time based on a wall thickness of 1mm/3s, controlling the ejection delay within 0.5-2 seconds, and optimizing the mold cooling system.

2. Equipment and operation category
Q: How to handle emergency situations when the injection head is stuck in the goose neck area?
A: After the equipment cools down, try rotating the hammer head. If it cannot be rotated, replace the driver cylinder; Long term solution: It is recommended to upgrade the material of the material pot and regularly clean impurities.

3. Q: Is there intermittent discharge during material feeding?
A: Check if the nozzle is blocked (the gray section indicates blockage), which can increase the nozzle temperature by 5-10 ºC, shorten the nozzle departure time by 0.1-0.2 seconds, and moderately reduce the flow rate of the fixed mold cooling water.

4. Materials and Surface Treatment
Q: Does the casting have pattern defects after anodizing?
A: Adjust the uniformity of injection oil spraying and optimize the high-speed injection switching position; Regularly check the copper ion concentration in the oxidation tank (recommended ≤ 20ppm)
5. Mold maintenance category
Q: What should I do if the mold frequently sticks to the material?
A: Comprehensive solution: Reduce pouring temperature by 20-30 ºC Use polymer release agent Polish the surface of the mold cavity (use with caution for nitriding molds) Optimize sprue design to reduce metal liquid flushing