你好,欢迎来到阿里巴巴外贸圈 注册 登出
cn1001513501
外贸本科生
外贸本科生
  • 用户名cn1001513501
  • 粉丝36
  • 发帖数69
  • 铜币319枚
  • 威望1点
  • 社区居民
阅读:810回复:0

[建材]关于胶合板等级的界定

楼主#
更多 发布于:2013-06-09 11:41
Grades
Grading rules differ according to the country of origin. Most popular standard is the British Standard (BS) and American Standard (ASTM). Joyce (1970), however, list some general indication of grading rules:[6]
Grade Description
A
Face and back veneers practically free from all defects.
A/B
Face veneers practically free from all defects. Reverse veneers with only a few small knots or discolorations.
A/BB
Face as A but reverse side permitting jointed veneers, large knots, plugs, etc.
B
Both side veneers with only a few small knots or discolorations.
B/BB
Face veneers with only a few small knots or discolorations. Reverse side permitting jointed veneers, large knots, plugs, etc.
BB
Both sides permitting jointed veneers, large knots, plugs, etc.
WG
Guaranteed well glued only. All broken knots plugged.
X
Knots, knotholes, cracks, and all other defects permitted.
JPIC Standards
Grade Description
BB/CC
Face as BB, back as CC. BB as very little knots of less than 1/4 inches, slight discoloration, no decay, split and wormholes mended skillfully, matched colors, no blister, no wrinkle. Most popular choice for most applications.

喜欢1 评分0

最新喜欢:

cn1511529520排名查询
游客