摘要
外径、壁厚、定尺长度(支长)及壁厚均匀度、直度等是不锈钢管生产和流通中需要关注的基本尺寸参数。比较了欧盟、美国和我国国家标准对不锈钢管的基本尺寸参数及其公差规定的某些差异,详细分析了美国标准中独特的不锈钢管标重公差的实际意义、放宽薄壁不锈钢管圆度公差和严格厚壁不锈钢管壁厚均匀性公差的合理性,讨论了外径和壁厚的实际测量方法,以及矫直可能给不锈钢管的耐蚀性带来的损害。
Outer diameter, thickness, sizing length, out-of roundness, wall thickness unifln＇mity and straightness are the dimension parameters in tubular goods production and circulation. In this article, it compared the basic dimension paralneters and some tolerance differences in stainless steel pipe specified in standards of EU, USA und China, detailedly analvzed the practical significance of steel pipe seale weight tolerance in USA standard, the rationality of allowing the out-of-rnundness tolerance of thin wall thickness and strictly stipulate heavy wall thickness uniformity tolerance in stainless steel pipe. It also discussed the possible danmge caused fi＇om actual measurement method of outer diameter and wall thickness and straightening.
出处
《焊管》
2013年第4期66-70,72,共6页
Welded Pipe and Tube
关键词
不锈钢管
外径
壁厚
定尺长度
圆度
壁厚均匀度
直度
实测方法
矫直
stainless steel pipe
outer diameter
wall thickness
sizing length
out-of-roundness
wall thickness uniformity
straightness
actual measm＇ement method
straightening
