本标准规定了公称内径为25 mm~300 mm、工作压力为0.4 MPa~2.5 MPa和工作温度范围为-30 ℃~+150 ℃八种型别的输送烃类、溶剂和化学品用多层热塑性塑料(非硫化)软管及软管组合件的要求。
1型软管适用于输送气体;
2型到8型软管适用于输送液态体。
注1: 涉及软管和(或)软管组合件输送的化学品有关的内衬层及内螺旋线金属丝的包覆层聚合物的材料的选择参见附录A。
注2: 当考虑将聚合物包覆内金属丝的软管用于输送低导电性的烃类和化学品时,最好向制造商咨询。
本标准不适用于下述用途的软管和软管组合件:
——飞机加油(参见GB/T 10543);
——燃油分配(参见HG/T 3037);
——石油燃烧器(参见GB/T 24146);
——液化石油气和液化天然气(见ISO 27127);
——消防(参见GB/T 24144);
——近海液化天然气(参见 EN 1474-2);
——制冷管路。
定价: 49元 / 折扣价: 42 元 加购物车
This standard specifies the terms and definitions,working theory.Models designation and basic parameters,technical requirements,test methods,inspection rules,marking,packaging,transport and storage requirements for screw conveyer.
This standard is applicable to the screw conveyer whose working position is horizontal or close to horizontal(dip angle ≤ 20 °) for continuous and uniform conveying of powdery or granular grains.
定价: 432元 / 折扣价: 368 元 加购物车
This document specifies the order information, dimensions, shapes, masses, technical requirements, test methods, inspection rules, packaging, marking and quality certification of the welded austenitic-ferritic(duplex)stainless steel pipes for fluid transport.
This document is applicable to the welded austenitic-ferritic(duplex)stainless steel pipes (Hereinafter referred to as steel pipes)for fluid transport.
定价: 312元 / 折扣价: 266 元 加购物车
This standard specifies the order information, dimensions, shapes, masses, technical requirements, test methods, inspection rules, packaging, marking and quality certification of the seamless steel pipes for liquid service.
This standard is applicable to seamless steel pipes for ordinary liquid service.
定价: 360元 / 折扣价: 306 元 加购物车