Industry News
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How to identify the quality of forging
The main task of forgings quality inspection and quality analysis is to identify the quality of forgings, analyze the causes of forgings defects and preventive measures, analyze the causes of forgings defects, put forward effective prevention and improvement measures, which is an important way to...Read more -
There are three types of flange sealing surfaces
The part that connects the pipe to the pipe is connected to the pipe end. There are holes in the flange and bolts hold the two flanges together. Gasket seals between flanges. Flanged pipe fittings refer to pipe fittings with flanges (flanges or joints). It may be cast, threaded or welded. The fla...Read more -
Standard system for flange
The international pipe flange standard mainly has two systems, namely the European pipe flange system represented by German DIN (including the former Soviet Union) and the American pipe flange system represented by American ANSI pipe flange. In addition, there are Japanese JIS pipe flanges, but i...Read more -
Knowledge of flange blanks
Flange blank, flange blank is a more common form of production at present, liaocheng development zone hongxiang stamping parts factory compared with the traditional flange production process, has the following obvious advantages 1) raw materials according to customer demand all using standard ma...Read more -
Specification for heating ingot steel used in forging
Large free forgings and high alloy steel forgings are mainly made of steel ingot, which can be divided into large ingot and small ingot according to the specification of steel ingot. Generally the mass is greater than 2t ~ 2.5t, diameter is greater than 500mm ~ 550mm ingot called large ingot, oth...Read more -
Butt-welding flange sealing is reliable
High pressure butt welding flange is one of the most demanding flange products in the market. The general pressure grade of high-pressure butt welding flange is between 0.5MPA-50mpa. The structural form of high-pressure butt welding flange is divided into unit flange, integral flange, and insulat...Read more -
Analysis of butt welding flange production process
1, butt welding flange annealing temperature is up to the specified temperature, butt welding flange treatment is generally taken solution heat treatment, that is, people usually so-called "annealing", the temperature range is 1040~1120℃. You can also observe through the annealing furnace observa...Read more -
Rust removal tool for stainless steel flange
1. file: flat, triangular and other shapes, mainly used to remove welding slag and other prominent hard objects. 2. Wire brush: it is divided into long handle and short handle. The end face of the brush is made of thin steel wire, which is used to remove the rust and residue left after scraping b...Read more -
Forging flange production process
The forging process usually includes the following steps: selection of high quality billet blanking, heating, forming and forging cooling. Forging processes include free forging, die forging and thin film forging. During production, different forging methods are selected according to the quality ...Read more -
Flange connection and process flow
1. Flat welding: only welding the outer layer, do not need to weld the inner layer; Generally used in medium and low pressure pipelines, the nominal pressure of pipe fittings should be less than 2.5mpa. There are three kinds of sealing surface of flat welding flange, respectively smooth type, con...Read more -
Application of carbon steel flange in making steel plate
Carbon steel flange itself compact structure, simple structure, maintenance is also very convenient, sealing surface and spherical surface is often in a closed state, not easy to be washed by the medium, easy operation and maintenance, suitable for solvents, acid, water and natural gas and other ...Read more -
China gb neck flange manufacturer – quality win
DHDZ is the national standard with neck flange manufacturers. The company has strong technical force, can design and manufacture various special specifications of pipe fitting products according to user requirements. With metallographic inspection, physical experiment, chemical analysis, non-dest...Read more
