Model Number: 63mm GAS hdpe Brand Name: MANHUA Key Specifications/Special Features: Manhua polyethylene pipe heavily in the introduction of advanced production linesImported PE gas pipeline special materialsThe scale of production ranges fromΦ20-630mm. PE80/PE100 PROPERTIES TEST METHOD UNIT TECHNICAL REQUIREMENTS Appearance shall be black or yellow. GB15558.1-2003 NA Inner and outer pipe surface clean and smooth. Does not allow any bubbles, obvious scratches, dents, impurities, uneven color and other defects. Pipe ends should be cut flat and perpendicular to the tube axis. Oxidation Induction Time(OIT) GB/T17391-1998 MIN >20 Elongation at Brea GB8804.2-1988 % ≥350 Longitudinal reversion GB/Y6671.2.1-1986 % ≤3 Melt Flow Rate(MFR) GB/T3682-1983 g/10min 0.2-1.4 Hydrostatic GB/T6111-1985 h ≥165 Resistance to Slow Crack Growth GB/T18476-2001 h ≥165