High-Quality Ductile Iron Manhole with Custom Cast Design Available

• 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
Our advanced manhole covers are engineered with precision-crafted contact surfaces between the cover and its frame. This meticulous machining ensures an impeccable fit, eliminating any unwanted, disruptive noises.

Anti-slip
Designed with utmost safety in mind, our manhole frames boast diamond-shaped patterns that are expertly cast onto their surfaces. The innovative structural design features interlocking rings and enhanced T-shaped protrusions, significantly boosting the friction coefficient. This design ensures uncompromised grip and stability when laid on auxiliary roads, providing dependable traction against asphalt surfaces.

Anti-displacement
Our manhole frames are securely anchored to the ground using robust anchor bolts, cleverly concealed within strategically placed small round holes. This secure fixation prevents any misalignment during construction, even under the pressure of road rollers, thereby guaranteeing a flawless and standard construction process.

Anti-falling
Innovative safety measures are at the heart of our new five-prevention manhole cover, featuring an integral anti-falling grid. This essential addition acts as a safeguard to protect individuals and objects from falling into the manhole, ensuring safety even if the cover is dislodged.

Anti-theft
Underneath the robust surface of our manhole cover and tucked beneath the frame lies an ingenious anti-theft hidden box equipped with an opening folding plate. This smart design replaces the traditional anti-theft chain, offering a comprehensive solution to thwart theft while ingeniously preventing rust from cavitation and water erosion.

Company Profile

Qingdao Starise Metal Technology Co., Ltd. stands as a beacon of excellence in the realm of precision casting, seamlessly blending industry expertise with trade acumen to deliver unparalleled products worldwide. With over three decades of dedication, this enterprise, anchored by its state-of-the-art production facility spanning 47,000 square meters, boasts a remarkable annual output exceeding 30,000 tons of precision cast steel parts. Exporting to over 20 countries across Europe, America, and Asia, the company is a trusted partner on a global scale. Its commitment to innovation and quality is reflected in its cutting-edge 10,000 square meters of high-standard production workshops, setting the stage for excellence in every casting.


Our History

1. Founding Period (1995-1998):
In 1996, nestled in the industrious city of Pingdu, Qingdao, China, our company emerged with a vision to revolutionize precision casting for agricultural machinery and automotive axles. This nascent phase was marked by the production of small-scale precision castings leveraging traditional silica gel technology, setting the foundation for future growth.

2. Technological Accumulation and Expansion (1998-2014):
The year 1998 heralded a new era of sophistication with the introduction of advanced investment and sand casting technologies. This pivotal shift allowed the creation of medium to large-scale precision castings. Achieving ISO9001 certification in 2006 underscored our unwavering commitment to quality. Between 2009 and 2014, we embarked on an ambitious expansion, fortifying our facilities, launching new production lines, and embracing efficient processes to accommodate the ever-evolving demands for diverse, multi-batch, and bespoke manufacturing.

3. Brand Marketing (2016-2020):
In 2016, we embarked on a transformative journey of brand elevation, marking our presence at prestigious industry exhibitions both domestically and internationally. By 2017, we had augmented our global footprint, forging enduring partnerships with overseas clientele. Our relentless pursuit of excellence culminated in 2020 with the development of proprietary patented technologies, elevating our product precision and quality to new heights.

4. Technological Innovation and Sustainable Development (2018-2024):
2018 marked our commitment to pioneering advancements with the establishment of a dedicated R&D center, delving into breakthrough materials and processes. By 2019, we unveiled an eco-friendly precision casting process, drastically reducing environmental impact while enhancing the fidelity of our castings. Recognition as a national high-tech enterprise in 2020 affirmed our strength in technological innovation.

5. Intelligent Manufacturing and Future Vision:
The global pandemic of 2019 necessitated agile adaptation, prompting us to fortify our online marketing and service prowess, thus ensuring resilient business continuity. In 2021, our foray into intelligent manufacturing began, seamlessly blending automation and information technology to augment production efficiency and management acumen.

6. Looking Ahead:
With an unwavering commitment to an innovation-centric ethos, Qingdao Starise Metal Technology Co., Ltd. is poised to ascend as a global frontrunner in precision casting, continually redefining industry standards and crafting a legacy of excellence.

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 parts are expertly treated with premium rust preventatives, creating a robust, dense anti-rust film. This ensures that your products remain pristine, effectively resisting rust throughout both transportation and storage.
2. Buffer Protection: We take quality seriously. To shield parts vulnerable to impacts, we utilize protective buffer materials like foam boards and sponges. This meticulous wrapping ensures your items remain free from collision damage during transit.
3. Outer Packaging: For optimal security, small cast steel components are nestled in durable wooden boxes, with internal stuffing to eliminate movement during transport. Meanwhile, larger parts are secured in tailored metal or wooden frames, adopting container transport if necessary, to guarantee their safe passage.

Shipping

1. Logistics Selection: Partnering with top-tier logistics providers, we tailor transportation solutions to your needs, whether by road, rail, sea, or air. This flexibility ensures that your goods are delivered safely and timely, meeting your specific requirements.
2. Delivery Timeliness: For standard orders, expect dispatch within 30 working days post-production and inspection. Should urgency arise, we offer negotiable, expedited delivery times, prioritizing both production and shipment to meet your critical deadlines.
3. Logistics Tracking: Stay informed with our real-time logistics tracking service. Easily monitor your shipment's journey via our website or partner platforms using your order or tracking number, ensuring you're always updated on your goods' location and expected delivery time.

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