Industry News

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

How to identify flange quality

Shop around. How do you compare? Just comparing prices? Can you guarantee the quality of the flange you buy? The following flange manufacturer teaches you how to identify the quality of the flange. In order to buy more cost-effective flange products. 1. Price comparison, when much lower than the ... Read More

Stainless steel flange and carbon steel flange material how to identify

Stainless steel flange and carbon steel flange material how to identify? How to distinguish the roughly material of two kinds of flanges is relatively simple. The following DHDZ flange manufacturer takes you to simply understand the simple way to distinguish the material of two kinds of products.... Read More

What are the four factors that affect the flange process

Four factors affecting the flange process are: 1. Annealing temperature reaches the specified temperature. Flange processing is generally adopted solution heat treatment, temperature range of 1040~1120℃ (Japanese standard). You can also observe through the annealing furnace observation hole, the ... Read More

What problems will be encountered in the forging process

Forging processing process may encounter a variety of problems, we will introduce in detail. One, aluminum alloy oxide film: The oxide film of aluminum alloy is usually located on the die forged web, near the parting surface. The surface of the fracture has two characteristics: first, it is flat ... Read More

Surface heat treatment of steel

⑴ Surface quenching: Is the surface of the steel through rapid heating to the critical temperature above, but the heat has not had time to spread to the core before the rapid cooling, so that the surface layer can be quenched in martensitic tissue, and the core has not undergone phase transformat... Read More

What are the advantages of forgings and why do we choose forgings?

Forgings belong to the building materials industry, its use is more widely, from the concept of: forgings is the metal is applied pressure, through plastic deformation to shape the required shape or the appropriate compression force of the object. Forging is the use of the forging equipment to th... Read More

Large diameter flange assembly principle requirements and anti-corrosion construction

Large diameter flange as a common flange, because it can be applied to a variety of different occasions and the advantages of good effect by the industry loved, the product is widely used in machinery and chemical industry and other industries, let DHDZ flange manufacturers to introduce the assem... Read More

How to buy non-standard flanges

Non-standard flanges are those connected to containers or pipes by fillet welding. It can be any flange. Check integral flange or looper flange according to the integrity of flange ring and straight segment. Flange ring has two types: neck and non-neck. Compared with the neck butt flange, non-sta... Read More

Flange sealing form analysis

Forged flanges are invented on the basis of cast steel flanges, and their strength is much higher than cast steel flanges, so that the parts connected with pipes are connected to the pipe end. Butt welding flange is a kind of pipe fitting, which refers to the flange with a neck and a round pipe t... Read More

The material used in forging

The forging materials are mainly carbon steel and alloy steel, followed by aluminum, magnesium, copper, titanium and their alloys. The original state of the material is bar, ingot, metal powder and liquid metal. The ratio of the cross-sectional area of a metal before and after deformation is call... Read More
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