Standard No.:	CJ/T 129-2000
English Name:	Preformed directly buried insulating pipes for polyurethane (PUR) foamed plastics and glass fiber reinforced plastics protect layers
Chinese Name:	玻璃纤维增强塑料外护层聚氨酯泡沫塑料预制直埋保温管
Chinese Classification:	Q83    Heat supply instrument and equipment
Professional Classification:	CJ    Professional Standard - Urban Construction
Issued by:	MOC
Issued on:	2001-2-5
Implemented on:	2001-6-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	224.00
Delivery:	via email in 1~3 business day

本标准规定了由玻璃纤维增强塑料(即玻璃钢)外护层、聚氨基甲酸酯硬质泡沫塑料保温层及钢管组成的预制直埋保温管的结构、技术要求、试验方法和检验规则等。本标准适用于输送介质温度(连续工作温度)不高于12℃，偶然峰值温度不高于140℃，工作压力不大于2.5MPa保温管的制造与验收。工作在不同温度下聚氨酯硬质泡沫塑料最短预期寿命的计算见CJ/T114-2000的附录B。