This standard specifies the classification and designation, requirements, test methods, inspection rules, marking, transportation, packaging and storage, etc. of sludge scraper.
This standard is applicable to the peripheral transmission type and center transmission type sludge scrapers used for scraping off the sludge on the bottom of circular or square radial flow sedimentation tank as well as joist barrow type and chain transmission type sludge scrapers used for rectangular horizontal flow tank in water treatment process. It is also applicable to sludge scrapers with oil scraping and residue scraping devices.
2Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard,the latest edition applies to this standard.
GB/T 191 Packaging - Pictorial Marking for Handling of Goods
GB/T 1243 Short Pitch Transmission Precision Roller Chains and Chain Wheels
GB 5083 General Rules for Designing The Production Facilities in Accordance with Safety and Health Requirements
GB/T 8923 Rust Grades and Preparation Grades of Steel Surfaces Before Application of Paints and Related Products
GB 9969.1 General Principles for Preparation of Instructions for Use of Industrial Products
GB/T 13306 Plates
GB/T 13384 General Specifications for Packing of Mechanical and Electrical Product
GB/T 14048.1 Low-voltage Switchgear and Controlgear - General Rules
GB 50017 Code for Design of Steel Structures
GB 50205 Code for Acceptance of Construction Quality of Steel Structures
3Classification and Designation
3.1 Classification
a)Peripheral transmission typesludge scraperfor radial flow sedimentation tank shall be marked as GA;
