With more than 30 years of casting history, Wenzhou Longzhu Industrial Co., Ltd. has a large number of experienced casting engineers and technicians. We can produce castings of various sizes, shapes and materials according to the drawings provided by customers, especially in the field of valve castings. Cooperate with Fortune 500 companies for many years.
GS-C251.0619,WCB.WCC,LCB,LCC,LC3,4C,4D,WC6,C5,C12, C12A,CA15，CF3,CF8(-196’C),CF3M,CF8M,CF8C,CD4MCu,CK3MC uN,ZG200-400,ZG230-450,ZG270-500,2G40Cr1,ZG20CrM0.2G15C r1Mo1V,ZG35Cr1MO.ZG16CrMOG(1Cr5Mo),ZG1Cr13,ZGOCr18Ni9 Ti.5A.KmTB Cr26.4A
Resin sand casting, etc.
Sales manager： Mrs.peng E-mail: firstname.lastname@example.org
Tel： 0086-0577-86621768 Fax： 0086-0577-86621935
Address ： No.19 Longyong Road.Xiongxin Village. Longwan,Wenzhou,Zhejiang,China
A flat gate valve is a sliding valve in which the closing members are parallel rams. The closing member may be a single shutter or a double shutter with a distracting mechanism therebetween. The pressing force of the shutter to the valve seat is controlled by the medium pressure acting on the floating shutter or the floating valve seat. In the case of a double gate flat gate valve, the expansion mechanism between the two shutters can supplement this pressing force.
Major products of Longzhu are valve castings and supporting mechanical castings. Annually, Longzhu can produce more than 4,000 tons of steel castings and over 1,000 tons of iron castings. Steel types Longzhu uses contain carbon steel, middle-low alloy steel, duplex stainless steel ASTM A995 4A/5A/6A, ASTM A351 CK3MCuN and ultralow temperature steel types with special uses; while cast irons cover alloy cast iron, high-chromium iron, etc.
a. What is the corrosive environment? – Atmospheric, water, concentration of particular chemicals, chloride content, presence of acid.
b. What degree of forming is required to make the component? – Austenitic steels are the most formable of all the types being able to undergo a high degree of deep drawing or stretch forming. Generally, ferritic steels are not as formable but can still be capable of producing quite intricate shapes. Duplex, martensitic and PH grades are not particularly formable.
c. It must also be borne in mind that steel type alone is not the only factor in material selection. Surface finish is at least as important in many applications, particularly where there is a strong aesthetic component. Availability. There may be a perfectly correct technical choice of material which cannot be implemented because it is not available in the time required.
We can do the casting,forging and accembly by our own factory
Strict qualitify control for the raw material
Perfect production process for each part
The most advanced equipments for production and inspection
On time delivery