Head head determines the quality of the surface color head if the quality can come out through the surface color can tell, this is a simple and convenient way. Then the surface color head is how it appears head, gold Pipeline Co., Hebei billion below for your detailed introduction. Argon welded joint protection of surface color processing method to determine eligibility: Silver good pass without additional processing golden yellow (compact) is still a good deal of blue somewhat less qualified can not fail to remove failed to remove the purple blue violet poor, can not afford to go Department should rework gray or dark gray white poor poor repair substandard substandard substandard poor repair yellow powder quick opening pressure head rework rework requirements welded joints shall comply with the appropriate standards. After a round billet cutting, quick response to the peripheral effects of atmospheric Kaifeng head forming quality defects grinding eliminated. Positive grip head above the surface color of the color head to welcome new and old friends to visit the order, at the time of purchase head of the merits that we can discern quality head, using the results of this head will be better, while head our contribution will also be more and more. Head is a part of the container (as shown below) depending on the geometry of the different heads of stainless steel & carbon steel, can be divided into spherical, oval, disc, spherical cap, conical shell cover, such as several of peace, where spherical, oval shaped dish, head of spherical convex head also referred to as. Butt welded into the head, socket weld head. Containers for a variety of devices, such as storage tanks, heat exchangers, towers, reactors, boilers and separation equipment. Materials are carbon steel (A3, 20 #, Q235, Q345B, 16Mn, etc.), stainless steel (304,321,304 L, 316,316 L, etc.), steel (15Mo3 15CrMoV 35CrMoV 45CrMo), aluminum, titanium, copper, nickel and nickel alloy. Standard Standard Head: The pressure vessel head GB/T25198-2010 standard GB/T12459-2005GB/T13401-2005 electricity standard DL/T695-1999D-GD87-0607 pipeline and petrochemical standard SH3408-1996SH3409-1996 [head ], head to welcome new and old friends to visit the Order, Hebei billion gold piping supplied by Hebei billion gold piping. Welcome to consult Hebei billion Gold Pipe Manufacturing Co. (www.yijinguanjian.com), be sure to specify when contact is through the "Business Alliance Member" see, thank you! Contact: Alan Li Tong