ICS 75.180.10CCS E 92中华人民共和国国家标准GB/T 44317—2024热塑性塑料内衬油管Thermoplastics lined tubing2024⁃08⁃23 发布2025⁃03⁃01 实施国家市场监督管理总局国家标准化管理委员会发 布目　　次前言··············································································...