ASTM A350 (ASME SA350) is the standard specification for carbon steel and low alloy steel forged flanges and flanged fittings for low temperature services. Common use grade is ASTM A350 LF2 Class 1, corresponding...
General Properties Alloy 330 (UNS N08330) is an austenitic nickel-iron-chromium alloy developed to provide excellent resistance to carburizing and oxidizing atmospheres at elevated temperatures. With...
The three-layer polyethylene (3LPE) coating anti-corrosion steel pipe and the two-layer polyethylene (2LPE) coating anti-corrosion steel pipe both belong to the anti-corrosion steel pipe. The...
In May this year, the purchasing managers' index (PMI) of the steel sector in China's Hebei Province rose to 39.7 percent, up 2.9 percentage points month on month, as announced by the Hebei Province...
BEIJING, May 26 (Reuters) - Steel rebar prices in China hit their lowest in three years this week, underscoring flagging growth in the world's second-largest economy, particularly in its weak property...
In the January-April period of this year, China's steel sheet/plate exports totaled 18.08 million mt, up 50.7 percent year on year, according to the Chinese customs authorities. In April alone, China...
China’s economic recovery falters Iron ore has been on a downtrend for almost two months. Its price on the Singapore Exchange fell to a year-to-date low of $94.20/t last week, down more than 20%...
Trade data point towards reglobalisation Since 2006, there have been no significant changes in the trend towards more globalised and open trade, according to analysis by ING Groep NV. Although...
Ovako AB is completing a multimillion-dollar investment at two mills (Hofors and Hällefors) in Sweden to produce forged-rolled black bar. The company’s production and R&D teams have implemented...
1. Weld the flange to the pipe and cool it to ambient temperature before installing the valve onto the flange. Otherwise the high temperatures generated by the weld can affect the performance of the resilient...
A ductile iron pipe is made of a kind of cast iron, carbon and silicon alloy, is an iron ore stone blast furnace smelting product. According to the different forms of carbon in pig iron, it can be...
Valves are used to control the flow of gases, liquids and granular solids. They come in many types, sizes, materials, pressures and temperature ratings, and means of actuation. Globe valves...
Steel pipes can be categorized into welded and seamless types. The following introduces several common steel pipe production methods. Seamless pipe Seamless...
Copper -- It has a moderate segregation tendency which when reaching a comparable content is detrimental to the thermal deformation process of steel. Copper has a negative impact on forging, but it does...
Carbon -- Carbon is an indispensable alloying element in steel for the formation of cementite (and other carbides), pearlite, spheroidite, bainite and Fe-C martensite. A microstructure composed of one...
Martensitic stainless steel has high hardenability and can be air-cooled and hardened. Because of that, when cold forging martensitic steels, especially those with high carbon steel, it is important to...
Flange assembly 1. Before assembling the flange, the flange surface, especially the sealing surface, must be cleaned. 2. When assembling slip-on flange, the pipe end should be inserted into two third...
Repairing the sealing surface is a large and important task because after long-term use, the sealing surface of the valve disc and the valve seat will wear and the tightness will be reduced. The main...
For stainless steel pipe fittings and flange manufacturers, it is necessary to take into account not only the production cost of flange and pipe fittings, but more importantly, the factors that can prevent...
According to the functions and uses of gate valves and butterfly valves, a gate valve has small flow resistance and good sealing performance. Because the disc of the gate valve is perpendicular to the...