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: email@example.com
Tel： 0086-0577-86621768 Fax： 0086-0577-86621935
Address ： No.19 Longyong Road.Xiongxin Village. Longwan,Wenzhou,Zhejiang,China
Introduction of Duplex Stainless Steel
The regulating valve can be divided into straight stroke and angular stroke according to the stroke characteristics. Straight strokes include: single seat valve, double seat valve, sleeve valve, angle valve, three-way valve, diaphragm valve; angular stroke includes: butterfly valve, ball valve, eccentric rotary valve, full-function ultra-light regulating valve. According to the driving mode, the regulating valve can be divided into: pneumatic regulating valve, electric regulating valve and hydraulic regulating valve; according to the adjustment form, it can be divided into: regulating type, cutting type, adjusting cut type; according to flow characteristics, it can be divided into: linear, equal percentage , parabola, quick opening.
Wenzhou Longzhuindustry Valve Co., Ltd. (Longzhu) is located in Wenzhou Xiongxin Industrial Zone, next to Yaoxi Scenic Zone in the south, 5km away from Wenzhou Airport, 12km away from Wenzhou Railway Station and 3km away from Wenzhou Longwan Wan-ton Wharf, enjoying beautiful sceneries and convenient transportation. Founded in 1986, Longzhu has gone through thirty years of winds and rains and developed into one of Wenzhou's largest professional casting enterprises integrating the R&D, casting, machining and marketing of valve castings and machine parts. Moreover, the company has been awarded "Model Integrity Enterprise", "Honest Private Business", "Zhejiang AAA-grade Credit Enterprise", and "Enterprise with Harmonious Labor Relation in Longwan District", Wenzhou Well-known Trademark and Zhejiang Well-known Trade Name. Moreover, the company was rated as National High-tech Enterprise in 2015.
Most decisions about which steel to use are based on a combination of the following factors:
a. What welding will be carried out? - Austenitic steels are generally more weldable than the other types. Ferritic steels are weldable in thin sections. Duplex steels require more care than austenitic steels but are now regarded as fully weldable. Martensitic and PH grades are less weldable.
b. What product form is required? – Not all grades are available in all product forms and sizes, for example sheet, bar, tube. In general, the austenitic steels are available in all product forms over a wide range of dimensions. Ferritics are more likely to be in sheet form than bar. For martensitic steels, the reverse is true.
c. There may also be special requirements such as non-magnetic properties to take into account.