跳到内容 
Everything You Want to Know About UL651 PVC Conduit (2025)
UL 651的相关标准已经涵盖了NEC（国家电气规范）和NFPA 70中的相关标准。Schedule 40和80硬质PVC导管和配件可用于室内外装修或户外使用。
What is Schedule 40 PVC Conduit – The Ultimate Guide 2025
Discover Schedule 40 PVC Conduit: 2025 Guide on features, applications, installation tips & code compliance. Essential for Electricians & Contractors. Read Now!
ZH 
EN 
FR 
ES 
ES_MX 
PT 
AR 
DE 
KO 