标准名称：	起重机 司机室 第4部分：臂架起重机
英文名称：	Cranes - Cabins - Part 4: Jib cranes
中标分类：	机械 >> 通用机械与设备 >> 起重机械
ICS分类：	材料储运设备 >> 起重设备 >> 起重机
发布部门：	中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会
发布日期：	2006-07-19
实施日期：	2007-01-01
首发日期：	2006-07-19
作废日期：	1900-01-01
主管部门：	中国机械工业联合会
提出单位：	中国机械工业联合会
归口单位：	全国起重机械标准化技术委员会
起草单位：	北京起重运输机械研究所
起草人：	赵春晖
出版日期：	2007-01-01
页数：	4页
计划单号：	20031095-T-604

GB/T 20303本部分规定了按ISO 4206-1定义的臂架起重机司机室的要求。

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Product Code:SAE J1081
Title:Potential Standard Steels
Issuing Committee:Carbon And Alloy Steels Committee
Scope:This SAE Information Report provides a uniform means of designating wrought steels during a period of usage prior to the time they meet the requirements for SAE standard steel designation. The numbers consist of the prefix PS followed by a sequential number starting with 1. A number once assigned is never assigned to any other composition.A PS number may be obtained for steel composition by submitting a written request to SAE Staff, indicating the chemical composition and other pertinent characteristics of the material. If the request is approved according to established procedures, SAE Staff will assign a PS number to the grade. This number will remain in effect until the grade meets the requirements for an SAE standard steel or the grade is discontinued according to established procedures.Table 1 is a listing of the chemical composition limits of potential standard steels which were considered active on the date of the last survey prior to the date of this report. These ladle limits are subject to standard variations for check analysis as given in SAE J409.