Industry Knowledge

What is the composition of P11 material

A335 P11 pipe material contains elements such as carbon, manganese, and chromium. Chromium enhances the stability of carbides, but its heat resistance decreases above 550℃. Manufacturing processes inc

A209 Seamless Alloy Pipe Specification

A209/A209M Standard Specification for Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes

P91 Alloy Steel Heat Treatment: Normalizing, Tempering and PWHT Control

This article explains the standard heat treatment cycle for ASTM A335 P91 steel, covering normalizing at 1040-1080 C and tempering at 730-800 C. It details post weld heat treatment parameters, hardnes