色婷婷一区二区三区四区性爱,久青草资源福利视频

Header: Oval head; Disc head; Bulbous crown head; Hemispherical head; Flat bottom head; Tapered head; Spherical shell plates; Special-shaped head

Featured news

The Dutch trade fair for large tank TANK equipment

All kinds of oil, natural gas, LNG and biomass fuel storage tank related equipment

Focus on CIBF, Dazhi Technology's energy storage products have attracted much attention

This time, Dazhi Technology showcased a variety of products with leading technology and excellent quality in terms of power and energy storage, covering many highlights of the exhibition site

The 2024 China International Energy Storage Exhibition was grandly opened

The 14th China International Energy Storage Exhibition (CIES) was grandly opened at the Hangzhou International Expo Center.

2024 Shanghai Canned Food Machinery and Equipment Exhibition

The China Canned Food Industry Association said that in the past year, the canned food industry has achieved excellent results in enriching varieties, improving quality, and creating brands...

Header

The head is a part of the container, which is welded to connect the cylinder. According to the different geometric shapes, it can be divided into spherical, oval, disc, spherical crown, conical shell and flat cover, among which spherical, oval, disc, spherical crown head is also collectively referred to as convex head. In welding, it is divided into butt welding head and socket welding head. It is used in various vessel equipment, such as storage tanks, heat exchangers, towers, reactors, boilers and separation equipment. The materials are carbon steel (A3.20#, Q235, Q345B, 16Mn, etc.), stainless steel (304, 321, 304L, 316, 316L, etc.), alloy steel (15Mo315CrMoV 35CrMoV 45CrMo), aluminum, titanium, copper, nickel and nickel alloys.