? Description of Material Bar

The notation of every material contains English letters, Arabic numerals and some single-byte punctuation symbol. Each notation is not exceeds 25 characters.

As a basic principle for notating a material, if the material grades (or code) and the

processing state are clearly indicated in a national standard of China, the material grades and processing state must be indicated in the notation; otherwise, the material should be notated in accordance with this Specification or other relevant material selection specifications.

? Marked Form of Standard Material

If the following marked format of material in the material bar, it means the standard material was selected. These materials contain metallic raw materials and non-metallic materials (plastic, rubber, and compound materials, label, film).

Fill in each *. The punctuation symbols in the notation are fixed and should not be changed. The notation must not contain any space.

For detail notation description, see 2.

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Detail description of material notation

Field Requirement Notation method① Fe Al Zn Cu Pla Steel Aluminum Description Zinc-base alloy Copper Plastic Compound material Rubber Glass Film Label Insulation material Base material symbol Required Com Rub Glass Film Label Ins Metal Grade or code The abbreviation of the material name, or the English name or universal code of the material; Grade or code Required For a compound of multiple compositions, Nonmetal Code indicate the ratio of each composition in parentheses following the composition, with compositions of larger ratios preceding those with smaller : Com，PA66+GF(25%) For the material that are used in products supplying to North America, there is ”/NEBS” after the material code. Metal processing state (heat treatment state) Optional State Nonmetal Color or flame retardant grade or others Color or retardant grade of the material, to identify different materials; in the case of multiple states（state1）, separate the states with a hyphen (-)(state2). “clear” means “colorless and transparent”. “nature” means the material free of color masterbatch. Notate as per relevant Chinese standard. Blank The state is not indicated, namely there is no state notation or identification requirement. The state, including the preceding symbol (-) must be omitted. Plate, with a thickness of mm Round bar, with a diameter of mm Round tube, with an outer diameter of 15 mm and a wall thickness of mm Quadrate tube, with a side length of 15 mm and a wall thickness of mm Hexagonal bar, with mm distance between parallel edges Octagonal bar, with mm distance between parallel edges Square section bar, with a side length of 12 mm Flat section bar, with side lengths of 12 x 5 (mm) Channel iron,according to GB/T706 type 10 Angle iron,according to GB/T706 type Die cast or extruded section or injection molded part, with the dimensions indicated on the design drawing D-1/ Specification symbol (red) and Dimension② Optional 12x12 12x5 [10 L63x6x7 Blank Special instruction Optional Blank back adhesive Film material with adhesive on back . Example:Film,PC,back adhesive No marked if the material without special requirement,including the symbol (/) must be omitted ①The texts and parentheses in this column are all descriptive information.

②The \” in the dimension values are the multiplication sign. Example:

1) Cold-rolled plate, premium cold-rolled carbon steel 08 material compliant with China national standard, with a thickness of mm. The notation is: Fe, 08,

2) Injection molded plastic part conforming to the requirements of NEBS, PC material, with a flame retardant grade of 5VA and color of “RAL7035”. The notation is: Pla, PC/NEBS-YB206-5VA

? Marked Format of Non-standard Materials

Because some nonmetallic materials, such as packing materials and glass materials, do not have state-designated unified marks or international universal codes, they cannot be notated using the method defined in section . In such cases, just indicate the material name and

specifications in the material column of the drawings. The specifications are notated in the same way as described in section . If more than 25 characters are needed to note a material exceeds 25 characters, describe the materials in the “Notes” on the design drawing, and fill the material column with “See Note …”.

Example:

Tempered glass plate, in brown color, with a thickness of 5 mm. Fill the material column with “SEE NOTE 1”.

The “Notes” section in the drawing should be as follows: NOTES：

1. MATERIAL: BROWN SAFETY GLASS, 2. ......

? Special Marked_Drawing No.

Some pats are machining on the semi-product,which in the material bar is the drawing

number of the semi-product(DKBA XXXXX). Such parts include die-cast parts and section parts.

? Description of Surface Treatment

The surface treatment is sepressed by surface treatment code, The surface treatment code is expressed the surface treatment methods and the quality requirement.

? Encoding Rules Of Treatment Codes

A surface treatment consists of a letter and three digits. The letter is specified by the first Chinese letter of the substrate material. This rule is not applied to the \digits indicate the sequential number.

If there is more than one surface treatment in one part, only the main treatment code filled in the title bar, and others marked in the notes of the drawings.

If a surface treatmaent code with a suffix,such as”_1” or”_3”…,which means the surface

treatmean quality requirements is different with the code without the suffix,and the precess is the detailed requirements refer to the specification of the process.

? Meanings Indicated by Surface Treatment Codes

Table 3 lists the process names, process definitions, quality standard document numbers, and OBSERVATIONAL STANDARD numbers. These quality standard documents and OBSERVATIONAL STANDARD s must be followed.

The processing methods of the surface treatment in the drawings, which should corresponding to the process and quality instruction in table “YB***”

The combination of codes on the drawing indicates that the surface treatments are performed one by one according to the sequence of the codes. This happens only in the following two cases: 1）Zinc electroplating followed by local powder coating (painting): The combination is \zinc electroplating + code of powder coating on the steel substrate\

G002+G108,G016+G150). The combination indicates zinc electroplating followed by powder coating. Note that phosphating involved in the powder coating process can be omitted.

2）Aluminum anodizing followed by local powder coating (painting): The combination is \of anodizing + code of powder coating on the aluminum substrate\combination indicates anodizing followed by powder coating. Note that chemical conversion involved in the powder coating process can be omitted.

3） Hot dipping zinc followed by local out-door type powder coating (painting): The

combination is \substrate\out-door type powder coating. Note that phosphating involved in the powder coating process can be omitted.

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Surface treatment codes and the requirement

Substrate Code Not specified A000 F004 Nonmetallic F006 F007 F226 G001 G002 G003 Steel G004 G005 G006 G007 G008 G009 Process No surface treatment Plating chromium bright Painting (NS Silver Gray) Painting(IT Black) Painting (EN Silver) Phosphating followed by Painting black Zinc electroplating with yellow conversion coating Same as G002 Zinc electroplating with black conversion coating Same as G006 Electroplating nickel, bright Electroplating pure-tin Electroplating chromium, bright Sandblasting followed by Quality Requirements None ＋ Same as G002 Same as G006