The sample has been received, I didn't expect that the first time to cooperate with Hebei Gangzhihui Trading Co. The price is fair, the outer diameter and thickness of the pipe received is standard, and especially the quality is very good. Nice appearance, neat beveling, well packed, and comes with factory inspection report. The sales person is very professional and polite, solved all kinds of questions for us. The shipment was fast and the logistics was on time, and we will give priority to cooperating with Hebei Gangzhihui Trading Co!