1. About  D400 Square Clear Opening 380/430/480 Hinge Gully Grating

Product Description:
Material: Ductile Iron      Shape:Square      Ranges: D400      Clear Opering: 380/430/480/570/690/790      Seal: Seamless      Lock: Without      Key hole: Closed       Cut-corner Design: available      Hinge: Yes

• Specific Dimensions:

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 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.

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3. Production Facility

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

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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.

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5. Certificates - We Are Certified!

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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

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