This document specifies the construction, classification and code,marking, general, requirements, test methods, inspection regulations, sign, transport and storage of pre-insulated composite plastic pipes with polyethylene(PE)casing.
This document is applicable to pre-insulated composite plastic pipes with polyethylene(PE) casing used in heating and cooling system.
定价: 1164元 / 折扣价: 990 元 加购物车
This standard specifies the terms and definitions,classification and designation,materials,requirements,test methods,inspection rules,marking,instructions and certificate,packaging,transportation and storage of compound heating radiators (hereinafter referred to as “radiators”).
定价: 432元 / 折扣价: 368 元 加购物车
本标准规定了密闭式燃烧的燃气采暖热水炉(以下简称器具)的术语和定义、分类及其参数,材料、结构和安全要求,性能要求,试验方法,检验规则, 标志、警示和说明书,包装、运输和贮存。
本标准适用于额定热输入小于等于70 kW,最大采暖工作水压小于等于0.3 MPa,工作时水温不大于95 ℃,采用大气式燃烧器或风机辅助式燃烧器或全预混式燃烧器的采暖热水两用的器具,也适用于单采暖器具。
本标准不适用于以下器具:
——自然排气烟道式、室外型器具;
——冷凝式器具;
——容积式器具;
——在同一外壳内采暖和热水分别采用两套独立燃烧系统的器具,包括两者有共同烟道的器具。
定价: 87元 / 折扣价: 74 元 加购物车