P91 хатуу хайлшин хоолой
Specifications and appearance quality P91 alloy pipe according to GB/T8162-87 4.1. Specifications: The outer diameter of the hot-rolled tube is 32~630mm. The wall thickness is 2.5~75mm. The outer diameter of cold rolled (cold drawn) pipe is 5~200mm. The wall thickness is 2.5-12mm. 4.2. ...