Here's the text.
Sewer cast iron lid
Last update date April 1, 2024
Specifications and Registration Procedures
[For those who use "Sewerage cast iron lid products" for construction]
1 For cast iron lid products for sewerage, please meet the specifications of Motoichi and use those made by the manufacturer who performed the registration procedure.
There are four types of cast iron lid products for sewerage that require registration procedures.
- Manhole cast iron lid (diameter Φ600)
- Manhole cast iron lid (diameter: Φ900-600)
- Rainwater basin lid
- Performance-specified rainwater basin lid
2 For registered manufacturers and products, refer to “Special Specifications for Registered Cast Iron lid Manufacturers”.
3 The “Special Specifications for Registering Cast Iron lid Manufacturers” update the manufacturer's registration status at any time, so please check the latest status.
| Document name | Date of revision | Remarks | |
|---|---|---|---|
| Casting iron lid specifications for sewerage manhole cast iron lid cover diameter 600 (PDF: 1,494KB) | April 1, 2024 | This is a summary of the structural specifications that the manhole cast iron lid should meet. | |
| Casting iron lid specifications for sewerage Manhole cast iron lid lid diameter 900-600 (PDF: 1,630KB) | April 1, 2024 | This is a summary of the structural specifications that the manhole cast iron lid should meet. | |
| Fall prevention device specifications for Yokohama-shi sewer iron lid (PDF: 339KB) | April, 2024 | This is a summary of structural specifications that the fall prevention device should meet. | |
| Yokohama-shi performance regulation type rainwater basin lid specification (PDF: 725KB) | April 1, 2024 | This is a summary of structural specifications that should be met by performance-based rainwater basin lids. | |
| Yokohama City Rainwater basin lid specification (PDF: 693KB) | April 1, 2024 | This is a summary of the structural specifications of the new Hamamasu lid published in the Yokohama City Sewerage Design Standard Map (tube edition). | |
| Manhole cast iron lid factory registration point for Yokohama-shi sewer (PDF: 76KB) | September 1, 2020 | No, no | |
| Collection of manhole cast iron lid factory registration style for Yokohama-shi sewer (Excel: 103KB) | September 1, 2020 | This is a collection of documents required when applying for factory registration. | |
| Manhole cast iron lid diameter 600 type registration procedure for Yokohama-shi sewer (PDF: 163KB) | April 1, 2024 | No, no | |
| Collection of manhole cast iron lid diameter 600 type registration style for Yokohama-shi sewer (Excel: 52KB) | July 1, 2019 | This is a collection of documents required when applying for model registration of the manhole cast iron lid. | |
| Manhole cast iron lid diameter for Yokohama-shi sewer 900-600 type registration procedure (PDF: 166KB) | April 1, 2024 | No, no | |
| Collection of Manhole cast iron lid diameter 900-600 type registration style (Excel: 53KB) for sewerage in Yokohama City | July 1, 2019 | This is a collection of documents required when applying for model registration of the manhole cast iron lid. | |
| Yokohama-shi performance regulation type rainwater basin type registration procedure (PDF: 96KB) | April 1, 2024 | No, no | |
| Collection of Yokohama-shi performance regulation type rainwater basin type registration style (Excel: 61KB) | July 1, 2019 | This is a collection of documents required when applying for model registration of a performance-defined rainwater basin lid. | |
| Performance-specified rainwater basin lid and rainwater basin lid manufacturer registration guidelines (PDF: 103KB) | April 1, 2024 | necessary/required procedures has been registered as a Motoichi manufacturer for performance-based rainwater basin lids and rainwater basin lids. | |
| Collection of registration styles for registered rainwater basin lids and rainwater basin lid manufacturers (Excel: 21KB) | September 1, 2020 | This is a collection of styles based on the performance-based rainwater basin lid and rainwater basin lid manufacturer registration guidelines. | |
Download of special manuals for manufacturer registration and general diagrams for each company type
The “Special Specifications for Casting Iron lid Registered Contractors” and “General Figures for Each Company” stipulate the following products among the cast iron lids for sewerage described in the “Yokohama City Sewerage Design Standard Map (Tube)”. is.
1 Manhole cast iron lid
- Manhole cast iron lid lid diameter: 600 A (T-14)
- Manhole cast iron lid lid diameter 600 type B (T-25)
2 Manhole cast iron lid
- Manhole cast iron lid diameter: 900-600 T-25
3 Performance-standard rainwater basin lid
4 Rainwater basin lid
※Rainwater basin lids do not require model registration, so there are no general figures for each company.
Special specifications registered as cast iron lid manufacturer
This special specification describes manufacturers that meet the specifications of the city and have completed product registration.
| Document name | Date of revision |
|---|---|
| Special Specifications for cast iron lid manufacturers (PDF: 118KB) | April 1, 2022 |
General diagram of each company type
The model diagram of each company's model registered product (file is in PDF format) is described. Click the manufacturer's name to see the drawing.
The registration has an expiration date. Please be careful when using registered products.
| Manufacturer name | Registration expiration date |
|---|---|
| Hinode Water Supply Equipment Co., Ltd. (PDF: 473KB) | March 31, 2025 |
| Tomomis Co., Ltd. (PDF: 1,223KB) | March 31, 2025 |
| Nagashima Casting Co., Ltd. (PDF: 410KB) | March 31, 2025 |
| Nippon Casting Iron & Co., Ltd. (PDF: 616KB) | March 31, 2025 |
| Nijiki Co., Ltd. (PDF: 420KB) | March 31, 2025 |
| Aqua Intech Co., Ltd. (PDF: 948KB) | March 31, 2025 |
| SUZUTECH CO., LTD. (PDF: 784KB) | March 31, 2025 |
| Hokusei Kogyo Co., Ltd. (PDF: 515KB) | March 31, 2025 |
| Daimon Co., Ltd. (PDF: 658KB) | March 31, 2025 |
| Mizushima Iron Works Co., Ltd. (PDF: 3,170KB) | March 31, 2025 |
※Please note that the model of Hokusei Kogyo Co., Ltd. has been changed since April 1, 2016.
[Reference]
・The following is a company that has been registered in the past.
For the latest registered traders, please refer to the above “Special Specifications for Registering Cast Iron lid Manufacturers”.
| Manufacturer name | Registration expiration date |
|---|---|
| Hinode Water Supply Equipment Co., Ltd. (PDF: 537KB) | March 31, 2025 |
| Hokusei Kogyo Co., Ltd. (PDF: 334KB) | March 31, 2025 |
| Manufacturer name | Registration expiration date |
|---|---|
| Hinode Water Supply Equipment Co., Ltd. (PDF: 331KB) | March 31, 2025 |
※Please note that the model of Hinode Water Supply Equipment Co., Ltd. has been changed since October 1, 2016.
You may need a separate PDF reader to open a PDF file.
If you do not have it, you can download it free of charge from Adobe.
To download Adobe Acrobat Reader DC
Inquiries to this page
Sewerage River Bureau General Affairs Department Technical Management Division
Telephone: 045-671-3530
Telephone: 045-671-3530
Fax: 045-663-4313
Email address: gk-gijutsukanri@city.yokohama.jp
Page ID: 784-280-027
