Round Manhole cover with octagonal frame

 Hdpe Manhole

1. About E600 Double Triangular Clear Opening 675x675 DI Manhole Cover

• Specific Dimensions:

2. Design:

Professional software used for design and test

• A group of highly experienced technical engineers are right here waiting for any of your request.
• We are able to use most of the world-wide engineering software, including AUTO Cad, Pro Engineer, Solid Works and etc.

3. Production Facility

Besides traditional hand moulding, we also use Automatic Moulding Lines for better surface condition and dimension accuracy.

4. Quality Control

Permanent Set and Load Test

An independent Quality Control is supervised directly by General Manager and responsible for following duties:

• Physical and chemical analysis, dimension measurement, weighting and other inspection of the raw material and finished products.
• Particular test for different products.
• Visual measurement and conformation to standards.
• Identifying, recording and disposing of rejected material.

5. Certificates - We Are Certified!

6. Contact SYI Group

SYI Industrial Co., Ltd.

• Email: zhangjian# (# = @)
• Tel: 0086 351 2027764
• Fax: 0086 351 4040962
• Website:

You will get our quick reply!
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Best regards
SYI Group