Shanghai Daoqin Plastics Co., Ltd.

currently production flame retardant PVC electrical tube/pipe （ flame resistant PVC穿线 tube/pipe ） 厂家 very more, market upper sales flame retardant tube/pipe product quality 参差不齐, excellent flame retardant tube/pipe production 厂家寥寥 can 数. use in 选购时也 very less heavy tube/pipe overall quality and anti safety requirements, 而一味追求 low 价, selection rear 不但起不 to flame retardant function, also formed very large safety 隐患.

flame retardant PVC electrical tube/pipe is polyvinyl chloride (PVC) is main/primary raw materials, add other additives extrusion molding used for 2000V below/following industrial and construction engineering in electrical cable 保护 平直导 tube/pipe. according to machine force will its separation is light type tube/pipe （１ type or A type ）, in type tube/pipe （２ type or B type ） and heavy type tube/pipe （３ type or C type ）, light type tube/pipe can relatively light machine force, heavy type tube/pipe can relatively heavy machine force. flame retardant PVC穿线 tube/pipe remove meet/satisfy machine force conditions outer, also meet/satisfy anti safety requirements, 常出现 defect is resistant pressure strong/high degree and other property can 不 关, oxygen index (LOI) low, density ultra- 标 and other. use in 选购时, attention/notes below/following 几点:

１．观察导 tube/pipe 标志, label and other 标识. tube/pipe upper 应标明每批 product manufacturing 厂名称, or other 识别符 combined, Model/Grade, outer dimensions, tube/pipe long degree, property can standards and other, tube/pipe upper has this 标识, is false poor product, 坚决不 can use.

２. need selection combined standards or industry standards product. generally 说, tube/pipe in 应标明 product standards. currently flame retardant tube/pipe standards has 公安部 industry standards GA305-2001, construction standards JG3050-1998 and 四川省 方 standards DB51/168-93以 and enterprise standards. 若执行 standards is 公安部 standards tube/pipe quality most excellent, combined standards product especially in anti safety upper most can 靠, standards is construction standards tube/pipe quality 次之, standards is standards and enterprise standards tube/pipe quality also 次之. 普通家庭 use 户安装 selection flame retardant tube/pipe need can to construction standards can, if is construction engineering field/area use tube/pipe, is meet/satisfy anti safety requirements, need to 公安部 industry standards. another PVC穿线 tube/pipe as is flame retardant construction material product in used for has anti requirements construction material or 部位时, also meet/satisfy standards GB8624-1997《 construction material property can separation grade methods 》 in versus anti grade requirements.

３．查验 production 厂家当 year or upper year has 效检验 report. anti construction material quality 监督检验 in and 四川省消 anti and safety technology anti product quality 监督检验站 is method 定检验 machine 构, use can through upper or electrical 话查询检验 report true property and has 效期, is: WWW.CCCF.COM.CN（ China anti product 信息网）.

４．观察导 tube/pipe appearance, quality excellent tube/pipe inner, outer 壁应平 slip, obvious bubbles, cracks and color 泽不均 and other defect; inner outer surface has and similar defect; tube/pipe 口边缘应平 slip, loss electrical 线, cable insulation 层; tube/pipe thick uniform. 反之则 quality relatively 差.

５． comparison electrical force property can and property can, resistant pressure can force, impact resistant can force, resistant bending can force, resistant can force, heat resistant can force, electrical insulation property can and oxygen index (LOI), water 平燃烧 property can, gas density and other grade and other. generally 说, tube/pipe thin, force property can 越差; property can good （ add flame retardant agent more ）, force property can 越差, easy 出现脆, 裂, phenomenon. use in 选购时 can according to use different property can requirements selection electrical force property can relatively good tube/pipe.

６．选购 quality degree high enterprise production product. currently inner several large production enterprise already through ISO9000国际 quality tube/pipe system certification and product certification, product quality relatively stability, rear good, small production product easy formulation adjustment and cost and other causes formed quality unstable, or sales product quality low 于送检 product 情况.

总之, large 消费者应 add strong/high product quality 意识, selection excellent product, promote production enterprise production combined standards flame retardant PVC穿线 tube/pipe, made false poor product, will safety reduce to most low degree. 【本文 源公众号玉树市消 anti, 仅供参考】