A. outer surface defects 1. An outer fold: the outer surface of the pipe presents a layered folded spiral.  2. separation: presenting...

Duplex stainless steel tee is a commonly used pipe components, usually through the pipe bulging to obtain, its principle is to rely on...

For conventional oil pipe welding, the quality is difficult to control, and it is difficult to achieve the required welding slag not...

Design and manufacture of a tap The internal thread on the stamping elbow usually adopts tap for tapping processing. Because stainless...

Boiler pipes often in high temperature and high pressure work, pipe smoke and water at high temperature steam oxidation and corrosion...

For the last 2 months , most of my suppliers have sent me emails informing that the prices of their raw materials have been increasing...

The best way to improve the quality of stainless steel pipe fittings is by ingot into a casting process. Due to the improvement of the...

Hot rolled steel Hot-rolled is with continuous casting slab or blooming slab as raw material, after reheating furnace heating, high...

October 19, 2016, Baton Rouge, LA — Today the CSB released its final report (Final Report October 19, 2016: PDF file) into the June 13,...

Flat welding flange is a kind of disc parts, the most common in the pipeline engineering, flanges are used in pairs. In pipeline...

How to get rid of surface stains of cracking tube follow the steps below: The first step is to clean, we must first petroleum cracking...

The chemical compositions for some commonly used austenitic, ferritic, and duplex stainless steels are provided in the following tables....

The chemical compositions for some commonly used martensitic, precipitation hardening stainless steels are provided in the following...

Usually, according to the purpose of the steel pipe and working condition is different, dealing with the allowable deviation of the size...

High frequency welding is a welding process in which the heat source used to melt the joining surfaces is obtained from high-frequency...

Due to the wide range of application of shaped steel tube, which promotes the rapid development of the production of shaped steel tube. ...

Generally speaking, the welded steel pipes are pided into general welded pipe, galvanized welded pipe, oxygen welding pipe, metric system...

Speaking of 304 stainless steel and 201 stainless steel, we certainly no stranger, but in the eyes of many consumers, the difference...

The annealing of the stainless steel elbow is one of the factors that determine the quality of the stainless steel elbow. If we grasp...

The residual defects in erw steel pipe ultrasonic testing is an important reason for failure of the weld, causing defects missed is...