... material 2.AENOR,WATERMARK,EME,ISO Certificate 3.Butt welding pipe 4.For hot water 5.Factory price 1.We insist ... 2.With WATERMARK,AENOR,EME,ISO certificates verify,PEX AL PE water pipe is widely used for underfloor heating.TÜV and ... perfect quality control management system.4.Butt-welded PEX AL PE pipe is made of 5layers,both inner and outer layers are ...