An experimental research of the forming of tube-ending neck-in is discussed by using the technology of friction spinning.

Through study on pipe end shrink mouth technology of 300 MW,600 MW boiler heated surfaces made in Harbin Boiler Works as well as analysis of principle of pipe end shrink mouth and technology design, a new method of shrink mouth technology and parameters are proposed.

Mathematical simulation on the process of pipe head necking down;

The forming limit of forward extrusion and cross rolling tube billet;

Uniformity of heat flux on tube billets heated in ring oven;

The relations between the dimension of tube billets and the shape of finished products were investigated and compared with the computational results.

Practice of Steelmaking Process for of N80 Grade Steel 36Mn2V for Oil well Tube Blank;

The production flow,after forged heat treatment and final heat treatment process for the high strength tube blank have been described in this article.

This paper introduces practice on producing quality carbon steel for seamless tube blank with LD-LF process in Hangzhou Iron & Steel Group Company.

Closed loop control of spray height in tubular preparation with reciprocating spray deposition process;

Deposition behavior and movement parameters optimization for reciprocating spray forming tubular;

Process principle of reciprocating spray forming large thick-wall tubular was analyzed.