How can I get the quotation?

Please send us information for quote:drawing,Amaterial,quantity or other request,we canaccept PDF,ISGS,DWG,STEP file format. If youdon't have drawing,please send the sample tous,we can quote based on your sample too.

What if the parts are not good?

We can guarantee good quality,but ifhappened,please contact us immediately,take some pictures,we will check on theproblem,and solve it asap. 18-month warranty.

How to deliver the goods?

Deliver to the designated place as per the customer's requirements.

will my drawings be safe after sendingthem to you?

Yes,we will keep them well and won't release themto the third party without your permission.

Is it possible to know how are my productsgoing on without visiting your company?

We willoffer a detailed production schedule and sendweekly reports with digital pictures and videos whichshow the machining

How to enjoy the OEM services?

Usually,base on your design drawings or originalsamples,we give some technical proposals and aquotation to you,after your agreement,we producefor you.

What are the benefits of choosing you as a long-term partner?

We will provide a process cost reduction test for our long-term cooperative partners once a year, aiming to lower the procurement costs for our customers. For customers who reach a certain procurement amount, we will also offer a free mold fee activity. Please contact us if you have any demand. We would provide our best price!

Customized Casting Ductile Iron Drain Grate Manhole Cover for Drainage System

Name: Customized Casting Ductile Iron Drain Grate Manhole Cover for Drainage System
Brand: Weifang Shengao Machinery Co., Ltd.
SKU: 761402462

Shandong, ChinaWeifang Shengao Machinery Co., Ltd.

US$600.00-1,050.00

1 Ton

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

as Specification

Warranty

as Specification

Model NO.

SA-JG

Material

SMC

Shape

Circle

Certification

RoHS, ISO, CE

Item

Manhole Cover

Brand Name

Shengao, OEM

Size

200-1200mm

Mold Type

Shell Mold, Sand Casting

Process

Sand Casting + Machining

Raw Material

Ductile Iron, Cast Iron, Qt500

Casting Tolerance

CT 7 ~ CT 8

Surface Finish

Ra 12.5

Dimensions

as Per Drawing

Surface

Polishing, Anodising, Powder Coating

Type

Manhole Cover

Application

Road

Metal Type

Cast Iron

Solar Cell Type

Poly-Crystalline Silicon

Frame Finishing

Powder Coated

Transport Package

Pallet, Iron Frame, Flywood Box.

Specification

SGS, ISO9001: 2008

Trademark

Shengao

Origin

Weifang City, Shandong Province

HS Code

87089910

Production Capacity

50000PCS/Month

Key features

Customizable Dimensions: Size ranges from 200mm to 1200mm, fully customizable per customer drawings.

Wide Load Class Range: Available in classes A15 to F900, suitable for pedestrian to heavy vehicle areas.

OEM & ODM Support: Full customization services including design, samples, and production based on client needs.

High-Quality Materials: Made from ductile iron (GGG50/QT500) and gray iron, ensuring durability and strength.

Strict Quality Control: Compliant with EN124/1433/1563 standards, tested with professional equipment.

Fast Delivery for Stock: Ready stock items can be dispatched within 3-10 days; custom items in 15-25 days.

18-Month Warranty: Comprehensive warranty coverage with free replacement for defective castings.

Anti-Theft Design: Double sealed, watertight structure prevents theft and ensures safety.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Weifang Shengao Machinery Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2010-04-06 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.63h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryWeifang Shengao Machinery Co., Ltd. is a limited company focused on mechanical parts, hardware, metal tools, CNC machine tools, and related components. It identifies as a professional technical supplier and offers 3D software design and broad customization services, including sample-, design-, full-, minor-, and flexible customization. The supplier has written procedures and records for service assessment, corrective actions, and complaint handling. Its export sales share is stated at 71%–90%, with three years of export experience. However, the supplier has nine employees, only two years of total R&D engineer experience, no new products in the past year, no ODM, SDK, or overseas service infrastructure, and no stated customer cases. Audit information is provided for a TUV Rheinland audit with a validity period from September 4, 2025 to September 3, 2026, but the evaluation result is recorded as 0 and no certification name is specified.

Supplier typeThe supplier explicitly identifies as a professional technical supplier and a limited company. Its stated business and product scope covers mechanical parts, hardware products, metal tools, CNC machine tools, functional components, forgings, and powder metallurgy products; the audit record identifies mechanical parts as the primary product.

After-Sales capabilityThe supplier has clear written procedures and followed records for corrective and preventive actions and for handling customer complaints. This directly supports an established service-response process, although the slices do not provide service performance results or response-time data.

Production capacityThe supplier reports an annual production output range, six to ten quality-control staff, on-time delivery, random production quality inspection, and its own factory. It has nine total employees, so the available evidence supports an operating production capability, while capacity beyond the stated output range cannot be determined.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization, and also welcomes OEM and ODM requests according to its company description. These repeated statements provide direct evidence of broad customization coverage, although the separate record states that ODM is not available, creating a conflict on ODM specifically.

Product Q&A

Q:Are you a trading company or manufacturer?

We are a manufacturer with 19 years of production experience, welcome to visit our factory.

Q:What is your MOQ?

Depends on your specific items.

Q:What is your lead time?

Stock: 5-10 days in general. No stock: 15-25 days after samples confirmed. Or please contact us by email for specific lead time base on your order quantities.

Q:What is your terms of payment?

Payment<=1000USD,100%in advance. Payment>=1000USD,30%T/T in advance,balance before shippment.

Q:Can we get some samples before massproduction?

Absolutely yes.