Precision Casting Ductile Iron Manhole Cover for Heavy-Duty Use

• 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 contact surfaces of the Precision Casting Ductile Iron Manhole Cover and its corresponding frame are expertly machined for a perfect fit, ensuring seamless integration and eliminating any potential for abnormal noise, thus providing a tranquil and noise-free environment.

Anti-slip
Ingeniously designed with diamond-shaped block patterns adorning its surface, the manhole frame of the Precision Casting Ductile Iron Manhole Cover incorporates a structural mode of interconnected rings. Enhanced with T-shaped protrusions, this design amplifies the friction coefficient, ensuring a robust grip between the asphalt base and the ring opening. Lay it confidently on auxiliary roads, knowing it will steadfastly resist slipping, even under challenging conditions.

Anti-displacement
Fixed firmly to the ground by reliable anchor bolts, the manhole frame boasts a construction process that guarantees no misalignment. The holes you see in the figure are designed precisely for this fixing function. Even when subjected to the rigorous rolling of a road roller, the frame and cover maintain perfect alignment, ensuring that the construction adheres to standard specifications.

Anti-falling
Revolutionizing safety, the advanced Precision Casting Ductile Iron Manhole Cover includes an innovative built-in anti-falling grid. This critical feature prevents accidents by ensuring that neither people nor objects fall in the unfortunate event of a cover loss, safeguarding individuals and property alike.

Anti-theft
Ingeniously concealed beneath the manhole cover, an anti-theft hidden box along with an opening folding plate replaces the traditional chain. This advanced solution effectively deters theft while also eliminating the rust issues caused by cavitation and water erosion, promising longevity and security for your infrastructure.

Company Profile

Qingdao Starise Metal Technology Co., Ltd. stands as a beacon in the industry, perfectly blending innovation with expertise, as an integration of both industry prowess and trade finesse. Specializing in cutting-edge research, on-point development, and worldwide trade of meticulously crafted precision casting components, this company has become a cornerstone in its field. With over three decades of dedicated service, it boasts a state-of-the-art production facility sprawling across 47,000 square meters. This includes 10,000 square meters dedicated to high-standard production workshops, primed for an impressive annual output of 30,000 tons of precision-cast steel marvels. Its exceptional products have traversed borders, reaching over 20 countries across Europe, America, and Asia, and beyond.


Our History

1. Founding Period (1995-1998):
The journey began in 1996 in Pingdu City, Qingdao, China, where Qingdao Starise laid its foundation with a vision to deliver exceptional precision casting solutions tailored for the agricultural machinery and automotive axle sectors. This foundational phase was marked by the production of small-scale precision castings utilizing traditional silica gel casting technology, setting the stage for future growth and innovation.

2. Technological Accumulation and Expansion (1998-2014):
The transformation began in 1998 with the introduction of advanced investment and sand casting technologies, paving the way for the creation of medium to large-scale precision castings. By 2006, the company proudly achieved ISO9001 certification, a testament to the unwavering quality and dependability of its casting offerings. Between 2009 and 2014, the company significantly expanded its production infrastructure, introducing new production lines and adopting cutting-edge casting processes. This expansion was pivotal in meeting the diverse and customized demands of multi-batch product manufacturing.

3. Brand Marketing (2016-2020):
In 2016, Qingdao Starise embarked on an ambitious brand-building journey, making a mark in both domestic and international industry exhibitions to elevate brand visibility. In 2017, the company's global reach expanded, forging long-term partnerships with overseas clients. By 2020, the company had innovated multiple patented technologies, significantly enhancing product precision and quality, positioning itself as a leader in precision casting.

4. Technological Innovation and Sustainable Development (2018-2024):
2018 marked the establishment of a dedicated R&D center, targeting new materials and processes. By 2019, the development of an environmentally friendly precision casting process not only reduced emissions but also improved casting quality by addressing surface and internal defects. In 2020, the company's dedication to innovation was recognized at the national level with its designation as a high-tech enterprise, underscoring its role as a trailblazer in technology.

5. Intelligent Manufacturing and Future Vision:
The global pandemic of 2019 prompted Qingdao Starise to adapt swiftly, enhancing online marketing and service capabilities to ensure resilient growth. The company's 2021 launch of an intelligent manufacturing initiative marked the integration of automation and information technology, dramatically boosting production efficiency and management effectiveness, paving the way for a future-ready manufacturing landscape.

6. Looking Ahead:
The company continues to embrace an innovation-driven development philosophy, with the unwavering goal of achieving leadership in the global precision casting industry, staying ahead in a rapidly evolving marketplace.

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 commitment to quality begins with the meticulous treatment of the surface of the cast steel parts. We apply top-tier rust preventives, expertly sprayed or smeared to create a robust and dense anti-rust film. This vital layer provides exceptional protection against rust, ensuring the parts remain in pristine condition throughout transportation and storage.
2. Buffer Protection: Protecting our parts from potential damage is a priority. We employ superior buffer materials, such as high-grade foam boards and sponges, to wrap parts vulnerable to impact. This precautionary measure is designed to prevent any collision damage during the transportation process.
3. Outer Packaging: Our packaging solutions are meticulously crafted for maximum stability and safety. Small cast steel parts are encased in durable wooden boxes, filled with protective stuffing to prevent movement during transit. For larger components, we secure them in bespoke metal or wooden frames, and when necessary, adopt container transportation to uphold the highest standards of safety during delivery.

Shipping

1. Logistics Selection: With a keen eye on reliability, we have forged enduring partnerships with several renowned logistics enterprises. Tailored to customer requirements and the specific nature of the goods, we offer a variety of transportation options including road, rail, sea, and air freight, ensuring your products arrive safely and on time.
2. Delivery Timeliness: Our commitment to prompt delivery is unwavering. For standard orders, dispatch occurs within 30 working days following product completion and inspection approval. In cases where urgency is paramount, we offer the flexibility to negotiate shorter delivery times, prioritizing production and dispatch to meet your critical deadlines.
3. Logistics Tracking: Stay informed with our comprehensive real-time tracking service. By using your order or logistics tracking number, you can effortlessly access our company's official website or our partners' platforms to monitor the current location and estimated arrival time of your goods, providing peace of mind and seamless tracking throughout the shipping journey.

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