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
Often referred to as "low alloy steels", this family generally uses smaller amounts of common alloying agents carbon, chrome, manganese, silicon, and molybdenum to create a desired range of material properties. These grades may exhibit very high tensile and yield strengths, but lack some of the corrosion or heat resistant properties of the higher alloy stainless materials.
· SC 4140
Cast UNS: J14045
Cast Grade: SC 4140
Cast ASTM: A915, A732
Wrought UNS: G41400
Wrought Grade: AISI 4140
Military / AMS: AMS 5338
· SC 4340
Cast UNS: J24053
Cast Grade: SC 4340
Cast ASTM: A915, A732
Wrought UNS: G43400
Wrought Grade: AISI 4340
Military / AMS: 5331
Cast UNS: J13047
Cast Grade: A4
Cast ASTM: A217, WC1 (CENT, INVEST, SAND)
Cast UNS: J24054
Cast Grade: 10B
Cast ASTM: A217, WC6 (CENT, INVEST, SAND)
Cast UNS: J42045
Cast Grade: C5
Cast ASTM: A217, WC9 (CENT, INVEST, SAND)
Cast UNS: J13345
Cast Grade: 9B
Cast ASTM: A216, WCB (CENT, INVEST, SAND)
Cast Grade: 105-85
Cast ASTM: A216, WCC (CENT, INVEST, SAND)
Longzhu always sticks to the principle "Credit first,quality first" and has been cooperating with HuaZhong Science and Technolology Material college to exploit capacity for new processes. Currently, we have improved greatly by introducing new techniques and equipments. Moreover, we have made some improvements in producing of safety valve, low-temperature valve, duplex steel valve specified for undersea oil well, and hydrogenation installation valve for oil-refining factories. Longzhu is noted for its strong technical power, advanced testing equipments, good record of delivery and steady quality of products. Longzhu got verified in the DIN EN ISO9001 for the quality system certification in 1999. In 2002，Longzhu got verified of the European Directive CE (PED) that based on the reliable quality, passed the TS certification in 2010. Longzhu consistently adhere to the policy of "treating people with sincerity, enhancing quality for prosperity" and regard "Final satisfaction of the customer" as its ultimate goal.
Longzhu not only has world-class resin sand founding production lines, digital controlled lathes, machining centers and other advanced processing devices, but also boasts perfect process facilities, standardized manufacturing and division of labor based on specialization; and has formed a complete production and manufacturing process. Furthermore, Longzhu has invested a huge sum in technical transformation and has set up a special new product R&D center.